SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
1
DATA SHEET
Form 1065-150206
SNAP Analog Input Modules
Features
Resolution = 0.004% of nominal range
Two, 4, 8, or 32 single-ended inputs per module
Out-of-range indication
Factory calibrated; no user adjustment necessary
Description
SNAP I/O analog input modules are part of
Opto 22’s SNAP PAC System. All of these
modules mount on a SNAP PAC rack with a
SNAP PAC brain or R-series controller, either
a standard wired model or a
Wired+Wireless™ model.
A minimum number of SNAP module types
support a full range of analog input
requirements. These software-configurable
modules handle a wide variety of signal
levels. They provide high resolution (0.004%
of nominal range) for precise signal levels, as
well as multiple-channel packaging. All
SNAP analog modules are factory calibrated
and individually tested. Part numbers
ending in -FM are Factory Mutual approved.
SNAP analog input modules have an on-
board microprocessor to provide module-
level intelligence, which makes them an
ideal choice for Original Equipment
Manufacturers (OEMs). For additional
information about the standalone operation
of SNAP analog modules, see Opto 22 form
#0876, SNAP I/O Module Integration Guide.
Notes for legacy hardware: Some of these
modules also work with older Opto 22 I/O
processors (brains or on-the-rack
controllers) and M-series or B-series racks. To
check processor compatibility, see the table
on page 3.
Specifications begin on page 4. For
dimensional drawings, see pages 35–45.
IMPORTANT: Any system using analog
sensors and input modules should be
calibrated annually for analog signals. For
I/O units on a SNAP PAC System, use the PAC
Control™ commands “Calculate and Set
Offset” and “Calculate and Set Gain.” For
other Ethernet-based I/O units, you can also
SNAP Analog Input Modules
Part Number
Part Description See
page
SNAP-AIARMS 2-channel 0 to 10 amp RMS AC/DC input 4
SNAP-AIMA 2-channel analog current input, -20 to +20 mA 6
SNAP-AIMA-4 4-channel analog current input -20 to +20 mA 6
SNAP-AIMA-8 8-channel analog current input -20 to +20 mA 8
SNAP-AIMA-32
SNAP-AIMA-32-FM* 32-channel analog current input -20 to +20 mA 9
SNAP-AIRATE 2-channel 0–25,000 Hz analog rate input 11
SNAP-AIR40K-4 4-channel analog resistor/thermistor input, 40 K Ohms,
20 K Ohms, 10 K Ohms, or 5 K Ohms 13
SNAP-AIR400K-8
8-channel analog resistor/thermistor input, 400 K Ohms
14
SNAP-AIRTD-1K 2-channel 1000 ohm platinum RTD input 18
SNAP-AIRTD 2-channel 100 ohm platinum RTD input 18
SNAP-AIRTD-10 2-channel 10 ohm copper RTD input 18
SNAP-AICTD 2-channel analog temperature input, ICTD 20
SNAP-AICTD-4 4-channel analog temperature input, ICTD 20
SNAP-AICTD-8 8-channel analog temperature input, ICTD 22
SNAP-AITM 2-channel analog type E, J, or K thermocouple or -150
to +150 mV input or -75 to +75 mV input 23
SNAP-AITM-2 2-channel analog type B, C, D, G, N, T, R, or S thermo-
couple or -50 to +50 mV DC or -25 to +25 mV DC input 24
SNAP-AITM-8
SNAP-AITM-8-FM* 8-channel B, C, D, E, G, J, K, N, R, S, or T thermocou-
ple or -75 to +75 mV, -50 to +50 mV, or -25 to +25 mV
input 25
SNAP-AIVRMS 2-channel 0 to 250 V RMS AC/DC input 26
SNAP-AIV 2-channel analog voltage input -10 to +10 VDC or -5 to
+5 VDC 27
SNAP-AIV-4 4-channel analog voltage input -10 to +10 VDC or -5 to
+5 VDC 27
SNAP-AIV-8 8-channel analog voltage input -10 to +10 VDC or -5 to
+5 VDC 29
SNAP-AIV-32
SNAP-AIV-32-FM* 32-channel analog voltage input -10 to +10 VDC or -5
to +5 VDC 30
SNAP-AIMV2-4 4-channel -50 to +50 mV input or -25 to +25 mV input 32
SNAP-AIMV-4 4-channel -150 to +150 mV input or -75 to +75 mV
input 33
* Factory Mutual approved
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
2
DATA SHEET
Form 1065-150206
use PAC Manager™ software to calculate and set offset and
gain.
Isolation
All SNAP analog input modules are isolated from all other
modules and from the SNAP I/O processor. The modules in
this data sheet do not have channel-to-channel isolation,
however. (If you need isolated analog modules, see Opto 22
form #1182.)
Transformer isolation prevents ground loop currents from
flowing between field devices and causing noise that
produces erroneous readings. Ground loop currents are
caused when two grounded field devices share a connection,
and the ground potential at each device is different.
Isolation also protects sensitive control electronics from
industrial field signals.
IMPORTANT: Since these analog input modules provide
multiple single-ended input channels with a common
reference, the channels are not isolated from each other. (See
Opto 22 form #1182 for isolated modules.)
Bipolar and Unipolar Input Modules
Most SNAP analog input modules are considered to be
bipolar, which means the range extends equal amounts above
and below zero. An example of this is the SNAP-AIV module,
which has a range of -10 to +10 VDC.
Some modules are considered unipolar, which means the
range starts or ends at zero. For example, the SNAP-AIVRMS
module has a range of 0 to 250 VAC because AC current
cannot be negative.
Nominal Range and Over-range Limits
All SNAP analog input modules have a nominal range for the
field signal and most support a 10% over-range limit. The
nominal range is the normal range of the field signal for the
module or point configuration. The over-range limit is the
maximum valid field signal the module or point configuration
can read outside of the nominal range. For example, the over-
range limits for the SNAP-AIV are -11 and +11 VDC, and for the
SNAP-AIVRMS, the over-range limit is 275 VAC.
Some modules or point configurations do not support field
signals outside of the nominal range. For example, points
configured as temperature inputs (thermocouple, RTD, ICTD)
do not support over-range readings.
When the field signal is outside of the over-range limits of the
module, the brain will not be able to determine if the value is
too high or too low, so it will return an "out of range" value of -
32768.0
Over-range limits only apply to input modules. Output
modules are limited to their nominal ranges.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
3
Installation
Note module and processor compatibility in the following
table:
All modules can be used with SNAP PAC rac ks and can be
placed in any position on the rack. Two- and four-channel
modules (except the SNAP-AIRTD-10 and SNAP-AIRTD-1K) can
also be used with legacy SNAP M-series and B-series
mounting racks. (For more information on using legacy
hardware, see form #1688, the SNAP PAC System Migration
Technical Note.)
Modules snap securely into place in the row of connectors on
the mounting rack. Each module connector has a number.
Analog input modules and other types of SNAP I/O modules
are mounted on the module connectors starting at module
position zero.
Modules require a special tool (provided) for removal.
The following diagram shows part of a SNAP PAC mounting
rack.
1. Place the rack so that the module connector numbers
are right-side up, with zero on the left, as shown in the
diagram above. (If your rack has screw connectors, the
screw connectors will be at the bottom.)
2. Position the module over the module connector,
aligning the small slot at the base of the module with
the retention bar on the rack. When positioning modules
next to each other, be sure to align the male and female
module keys at the tops of the modules before snapping
a module into position.
3. With the module correctly aligned, push on the module
to snap it into place.
4. (Optional) Use standard 4-40 x 1/4 truss-head Phillips
hold-down screws to secure both sides of each module.
CAUTION: Do not over-tighten screws.
5. Follow the wiring diagrams beginning on page 4 to
attach modules to the devices they monitor. Most
modules accept 22 to 14 AWG wire; the SNAP-AITM-8
accepts a maximum of two solid 18 AWG wires.
For faster, easier field wiring installation and maintenance,
use SNAP TEX cables and breakout boards. See Opto 22 form
#1756, the SNAP TEX Cables & Breakout Boards Data Sheet, for
compatibility and specifications.
Modules Compatible I/O Processors
32-channel inputs
8-channel inputs
SNAP-AIRTD-10
SNAP-AIRTD-1K
SNAP PAC R-series controllers and
SNAP PAC brains, including Wired+Wire-
less models
4-channel inputs
SNAP PAC R-series controllers and
SNAP PAC brains, including Wired+Wire-
less models
Also the following legacy brains:
SNAP Ethernet, SNAP Simple, SNAP
Ultimate; SNAP-DNP-ASDS; SNAP OEM
2-channel inputs
(except SNAP-
AIRTD-10 and
SNAP-AIRTD-1K)
SNAP PAC R-series controllers and
SNAP PAC brains, including Wired+Wire-
less models
Also the following legacy brains:
SNAP Ethernet, SNAP Simple, SNAP
Ultimate; SNAP-DNP-ASDS; SNAP OEM;
serial SNAP brains (B3000, Modbus, Pro-
fibus); B3000-HA; B6
Module
position zero
Module connectors
Processor
connector Retention bar
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
4
DATA SHEET
Form 1065-150206
0 to 10 Amp RMS AC/DC Input Module
Specifications
Description
The SNAP-AIARMS module provides an input range of 0 to 10
amps RMS AC/DC. An ideal input is the 5-amp secondary of a
standard current transformer used to monitor AC line current.
The SNAP-AIARMS module may be used to monitor AC
current to greater than a 100-amp range, using a current
transformer of suitable ratio.
If you need a module with channel-to-channel isolation, see
form #1182, the SNAP Isolated Analog Input Modules Data
Sheet.
Wiring diagrams are on the following page.
Part Number Description
SNAP-AIARMS Two-channel 0 to 10 amp RMS AC/DC input
Input Range 0 to 10 amp RMS AC/DC
Input Over-Range To 11 amps
Input Resistance 0.005 ohms
Maximum Input 11 amps AC/DC
Accuracy (AC) ±8 mA and ±0.2% reading
Resolution 400 microamps
DC Reversal ±16 mA (0.16%)
Input Response Time
(Step Change) 63.2% (158 V) in 50 mS
99% (248 V) in 75 mS
Data Freshness (Max) 32.3 ms
DC Common Mode Rejec-
tion >-120 dB
AC Common Mode Rejec-
tion >-120 dB at 60 Hz
Maximum Operating Com-
mon Mode Voltage 250 V
Isolation 1500 V
Power Requirements 5 VDC (±0.15 V) at 170 mA
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
5
0 to 10 Amp RMS AC/DC Input Module (continued)
SNAP-AIARMS Wiring Diagrams
Two possible wiring diagrams are shown below.
* Terminals 3, 4, 7, and 8 share a common
connection inside the module. Make sure
you observe polarity when connecting the
second channel. To avoid a potentially
hazardous short, double-check wiring before
turning on the current to be monitored.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
6
DATA SHEET
Form 1065-150206
Current Input Module, -20 mA to +20 mA, Two or Four Channels
Specifications
Description
The SNAP-AIMA and SNAP-AIMA-4 modules provide an input
range of -20mA to +20mA. The SNAP-AIMA has two channels,
and the SNAP-AIMA-4 has four. If you need a similar module
with more channels, see page 9. Check the table on page 3 for
I/O processor compatibility. These modules DO NOT supply
loop excitation current.
Since all inputs share a common
reference, the module must be
installed at the beginning or end
of a typical 4–20mA loop. If you
are using both standard and self-
sourcing transmitters, either put
the transmitters on different
modules or use different power
supplies. If you need channels
that are isolated from each other
on the same module, see
Opto 22 form #1182.
Input Range -20 mA to +20 mA
Resolution 0.8 microamps
Over-Range Limits From -22 to +22 mA
(+/-20 mA range)
Input Response Time
(% of span/ delta I/delta tme) 99.9% / 19.9 mA / 10 ms
Data Freshness (Max) SNAP-AIMA: 11.5 ms
SNAP-AIMA-4: 23 ms
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input 36 mA or 9 VDC
Maximum Operating Common
Mode Voltage 250 V
Accuracy 0.05% (10 microamps)
DRIFT: Gain Temperature
Coefficient 30 PPM/ °C
DRIFT: Offset Temperature
Coefficient 15 PPM/ °C
Power Requirements 5 VDC (±0.15 ) @ 170 mA
Input Resistance - Single
Ended 200 ohms (each channel)
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Wire size 22 to 14 AWG
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
Part Number Description
SNAP-AIMA Two-channel analog current input,
-20 mA to +20 mA
SNAP-AIMA-4 Four-channel analog current input,
-20 mA to +20 mA
SNAP-AIMA Wiring
(Two channels)
Wiring diagrams continue
on the following page.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
7
Current Input Module, -20 mA to +20 mA, Two or Four Channels (continued)
SNAP-AIMA-4 Wiring (Four channels)
SNAP-AIMA Wiring: Positive Common vs. Negative Common Connections
The following diagrams apply to SNAP-AIMA-2, SNAP-AIMA-4, and SNAP-AIMA-8 modules.
SNAP-AIMA
For transmitters sharing the minus side of the loop
supply. Note that input current will be read as a
negative current.
SNAP-AIMA
For transmitters sharing the plus side of the loop
supply. Note that input current will be read as a
positive current.
NOTE: Even-numbered terminals share a
common reference where applicable.
NOTE: Even-numbered terminals share a
common reference where applicable.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
8
DATA SHEET
Form 1065-150206
Current Input Module, -20 mA to +20 mA, Eight Channels
Specifications
SNAP-AIMA-8
4-20 self-powered (self-
sourcing) transmitters
Current Source
NOTE: Terminals 2, 4, 6, and 8 on both
connectors are connected internally.
NOTE: For transmitters sharing the plus side of the loop power
supply, the input current will be read as a positive current.
CH 2CH 1CH 0 CH 3
T
1
23 45 67 8
T TT
T
2345678
1
2345678
CH 4CH 5CH 6
CH 7
TTT
External loop
power supply
OR
See additional wiring diagrams on page 7.
Description
The SNAP-AIMA-8 module provides an input range of -20mA
to +20mA with eight channels of analog current input. (If you
need a similar module with 32 channels, see page 9.) The
SNAP-AIMA-8 can be used with SNAP PAC brains and rack-
mounted controllers only. These modules DO NOT supply
loop excitation current.
Since all inputs share a common reference, the module must
be installed at the beginning or end of a typical 4–20mA loop.
If you are using both standard and self-sourcing transmitters,
either put the transmitters on different modules or use
different power supplies. If you need channels that are
isolated from each other on the same module, see Opto 22
form #1182.
If you have multiple self-sourcing transmitters that share the
same positive common, do not use this module. Use the
SNAP-AIMA-i module instead. See Opto 22 form #1182.
Part Number Description
SNAP-AIMA-8 Eight-channel analog current input,
-20 mA to +20 mA
Input Range -20 mA to +20 mA
Over-Range Limits From -22 to +22 mA
(+/-20 mA range)
Resolution 0.8 microamps
Data Freshness (Max) 0.28 seconds
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input 36 mA or 9 VDC
Maximum Operating Common
Mode Voltage 250 V
Accuracy 0.05% (10 microamps)
DRIFT: Gain Temperature
Coefficient 30 PPM/ °C
DRIFT: Offset Temperature
Coefficient 15 PPM/ °C
Isolation 1500 V
Power Requirements 5 VDC (±0.15 ) @ 170 mA
Input Resistance - Single
Ended 100 ohms (all channels share
the same reference point)
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 1.7 in-lb (0.19 N-m)
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
9
Current Input Module, -20 mA to +20 mA, 32 Channels
Specifications
Description
The SNAP-AIMA-32 and SNAP-
AIMA-32-FM modules provide 32
channels of input with an input
range of
-20mA to +20mA. The SNAP-AIMA-
32-FM is Factory Mutual approved.
Check the table on page 3 for I/O
processor compatibility.
Dimensional drawings are on page 39.
These modules DO NOT supply loop excitation current.
Channels are not isolated from each other. Since all inputs
share a common reference, the module must be installed at
the beginning or end of a typical 4–20 mA loop. If you use
both standard and self-sourcing transmitters, put the
transmitters on different modules or use different power
supplies. (If you need channels that are isolated from each
other on the same module, see Opto 22 form #1182.)
Wiring
SNAP TEX cables and a breakout rack are available separately
for wiring points to field devices (see form #1756, the SNAP
TEX Cables & Breakout Boards Data Sheet). The SNAP-HD-BF6
cable connects the module to the breakout rack, which can
then be wired to field devices. (NOTE: The SNAP-HD-CBF6
wiring harness with flying leads is not recommended for this
module.)
CAUTION: We strongly recommend that you use the breakout
rack with these modules. Miswiring of any point on the
module can cause severe out-of-warranty damage. The
breakout rack protects the module from many wiring errors.
if you are using the module with loop power (2-wire) negative
common devices, connect to the SNAP-AIMA-HDB (or -FM)
rack. If you are using the module with self-powered devices
(4-wire) or with devices that share a common positive
connection, do not use the SNAP-AIMA-HDB (or -FM) boards,
which have a current limiting diode. Instead, wire to the SNAP-
AIV-HDB or SNAP-AIV-HDB-FM.
Correcting for Inverted Scaling
Positive readings for these modules appear as negative values.
Therefore, in order to obtain meaningful readings, use the
scaling feature in PAC Control as follows:
1. In the Add or Edit Analog Point dialog box for each point,
choose the scalable version of the module.
2. Under Scaling, scale each point negatively as shown
below:
Input Range -20 mA to +20 mA
Over-Range Limits From -22 to +22 mA
(+/-20 mA range)
Resolution 0.8 microamps
Input Filtering -3 dB @ 31 Hz
Data Freshness (Max) 1.15 s
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input 36 mA or 9 VDC
Maximum Operating Common
Mode Voltage 250 V
Accuracy 0.1% (20 microamps)
DRIFT: Gain Temperature
Coefficient 30 PPM/ °C
DRIFT: Offset Temperature
Coefficient 15 PPM/ °C
Isolation 1500 V, field to logic
Power Requirements 5 VDC (±0.15 ) @ 150 mA
Input Resistance - Single
Ended 100 ohms (each channel)
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals SNAP-AIMA-32: UL, CE,
RoHS, DFARS.
SNAP-AIMA-32-FM: CE, FM,
RoHS, DFARS
Warranty Lifetime
Part Number Description
SNAP-AIMA-32
SNAP-AIMA-32-FM 32-channel analog current input,
-20mA to +20mA
SNAP-HD-BF6 Wiring harness for SNAP-AIMA-32
modules and breakout racks
SNAP-AIMA-HDB
SNAP-AIMA-HDB-FM Breakout racks for SNAP-AIMA-32
and SNAP-AIMA-32-FM
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
10
DATA SHEET
Form 1065-150206
Current Input Module, -20 mA to +20 mA, 32 Channels (continued)
Wiring diagram: SNAP-AIMA-HDB breakout rack to SNAP-AIMA-32 module
NOTE: This diagram also applies to the SNAP-AIMA-HDB-FM rack and the SNAP-AIMA-32-FM
module.
Use with loop power (2-wire) negative common devices only.
For self-powered (4-wire) devices, see page 31.
For positive common devices, see page 34.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
11
0 to 25,000 Hz Analog Rate Input Module
Specifications
Description
The SNAP-AIRATE module provides two channels of
frequency-to-digital conversion. The nominal input range is 0
to 25,000 Hz with an over-range capability to 27,500 Hz. Nine
volts through a 4.7 K ohm pull-up resistor are provided
internally for use with devices that have open collector
outputs. This feature eliminates the need for the user to
provide the pull-up voltage supply and associated wiring,
barrier strips, etc.
The module works with TTL, CMOS, and open collector
outputs. Truly a two-wire hookup, the SNAP-AIRATE module is
ideally suited for use with a tachometer.
Please note that this module does not provide channel-to-
channel isolation. If you need isolated channels, see the SNAP
Isolated Analog Input Modules Data Sheet, form 1182.
Nominal Input Range 0 to 25,000 Hz
Input Over-Range To 27,500 Hz
Resolution 1 Hz
Input Response Time(% of
span / delta Hz / delta time) 10.0% / 2,500 Hz / 0.1 sec
63.2% / 15.8 K Hz / 0.9 sec
99.0% / 24.75 K Hz / 4.2 sec
Data Freshness (Max) 126 ms
DC Common Mode Rejection > -120 dB
AC Common Mode Rejection > -120 dB at 60 Hz
Maximum Operating Common
Mode Voltage 250 V
Accuracy (% full scale) ±4 Hz or ±0.5% of the input fre-
quency (whichever is greater)
Drift: Gain Temperature Coeffi-
cient 200 ppm / °C
Drift: Offset Temperature Coef-
ficient 50 ppm / °C
Input Coupling Single-ended AC (capacitor
coupled)
Input Amplitude
Sine wave
Square wave 2.5 V to 24 V p-p
0.5 V to 24 V p-p
Minimum Pulse Width 18 microseconds
Input Impedance (Inputs share
the same reference point.)
Pull-up Voltage
Pull-up Resistor
50 K ohms AC coupled
(-input to +input)
6 to 9 V
4.7 K ohms
Isolation 1500 V
Power Requirements 5 VDC (±0.15 V) at 190 mA
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
Part Number Description
SNAP-AIRATE 0–25,000 Hz analog rate input
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
12
DATA SHEET
Form 1065-150206
0 to 25,000 Hz Analog Rate Input Module (continued)
SNAP-AIRATE Wiring Diagrams
NOTE: This module does not provide channel-to-channel isolation.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
13
Thermistor Input Module 0–40 K, 0–20 K, 0–10 K, or 0–5 K Ohm
Specifications
SNAP-AIR40K-4
IMPORTANT: The mounting rack connector has 24 pins; the module
connector has 20 pins. The extra pins on the mounting rack
connector prevent misalignment of the module during installation.
Description
The SNAP-AIR40K-4 module provides four channels of analog
to digital conversion, ideal for thermistors used in HVAC
applications or for reading the resistance of potentiometer
input. See the table on page 3 for I/O processor compatibility.
The default input range is 0 to 40 K Ohms. The module can
also be configured for 0 to 20 K, 0 to 10 K, or 0 to 5 K Ohms.
NOTE: Resistance probes must be isolated from each other.
Part Number Description
SNAP-AIR40K-4 Four-channel analog resistor/thermistor
input, 40 K Ohms, 20 K Ohms, 10 K Ohms,
or 5 K Ohms
Input Range 0 to 40,000 Ohms
0 to 20,000 Ohms
0 to 10,000 Ohms
0 to 5,000 Ohms
Maximum Over-Range 44 K (40 K Ohms range)
22 K (20 K Ohms range)
11 K (10 K Ohms range)
5.5 K (5 K Ohms range)
Resolution 1.6 Ohm @ 40 K Ohms
0.8 Ohm @ 20 K Ohms
0.4 Ohm @ 10 K Ohms
0.2 Ohm @ 5 K Ohms
Input Filtering -3 dB @ 3.2 Hz
Data Freshness (Max) 100 (40 K Ohms)
200 (20 K Ohms)
400 (10 K Ohms)
800 (5 K Ohms)
DC Common Mode Rejec-
tion >-120 dB
AC Common Mode Rejec-
tion >-120 dB @ 60 Hz
Maximum Operating Com-
mon Mode Voltage 250 V
Accuracy 0.1% ± 40 Ohms @ 40 K Ohms
0.1% ± 20 Ohms @ 20 K Ohms
0.1% ± 10 Ohms @ 10 K Ohms
0.1% ± 5 Ohms @ 5 K Ohms
DRIFT: Gain Temperature
Coefficient 30 PPM/ °C
DRIFT: Offset Tempera-
ture Coefficient 15 PPM/ °C
Isolation 1500 V
Power Requirements 5 VDC (±0.15 ) @ 190 mA
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
14
DATA SHEET
Form 1065-150206
Thermistor Input Module 0–400 K, 0–200 K,
0–100 K, 0–50 K, 0–40 K, 0–20 K, 0–10 K,
0–5 K, 0–4 K, 0–2 K, 0–1 K, 0–500 Ohm
SNAP-AIR400K-8
IMPORTANT: The mounting rack connector has 24 pins; the module
connector has 20 pins. The extra pins on the mounting rack
connector prevent misalignment of the module during installation.
Description
The SNAP-AIR400K-8 module has eight channels of analog to
digital conversion that convert resistance to temperature or to
Ohms. The module is ideal for NTC thermisters commonly used
in HVAC, refrigeration, and process control applications. It may
also be used with PTC thermisters in resistance sensing
applications. See the table on
page 3
for I/O processor
compatibility.
NTC thermistor
Variable resistance device
Part Number Description
SNAP-AIR400K-8
Eight channel analog resistor/thermistor
input, 400 K Ohms, 200 K Ohm s,
100 K Ohms, 50 K Ohms, 40 K Ohms,
20 K Ohms , 10 K Ohms, 5 K Ohms,
4 K Ohms, 2 K Ohms, 1 K Ohms, 500 Oh m s
The SNAP-AIR400K-8 reads variable resistance type
transducers, and it has 12 resistance input ranges from 500
Ohms to 400 K Ohms, plus Autorange. Range dependent
resolution is from 20 milliOhms to 16 Ohms.
SNAP PAC brains and PAC Control provide direct temperature
readings for four popular thermistors using the Steinhart-Hart
equation (see page 16). You may also enter custom
coefficients for unsupported thermistor curves.
The simple two-wire connections are made to the pluggable
terminal strip on top of the module.
NOTE: The eight input channels must be electrically isolated from
each other and earth ground. The transducer resistor element
must be isolated from any electrically conducting probe tube
housing.
See page 15 for module specifications.
Wiring Information
Unshielded 24 AWG wire (minimum) is recommended.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
15
Thermistor Input Module 0–400 K (continued)
Specifications
Input Ranges 400 K, 200 K, 100 K, 50 K, 40 K, 20 K, 10 K, 5 K , 4 K, 2 K, 1 K, 500 Ohms, and Autorange
Resolution Resolution
16 Ohm
8 Ohm
4 Ohm
2 Ohm
Range
0 to 400 kOhms
0 to 200 kOhms
0 to 100 kOhms
0 to 50 kOhms
Resolution
1.6 Ohm
0.8 Ohm
0.4 Ohm
0.2 Ohm
Range
0 to 40 kOhms
0 to 20 kOhms
0 to 10 kOhms
0to5 kOhms
Resolution
0.16 Ohm
0.08 Ohm
0.04 Ohm
0.02 Ohm
Range
0 to 4 kOhms
0 to 2 kOhms
0 to 1 kOhms
0 to 500 Ohms
Accuracy
(Ohms @ Range)
0.1% Reading
+ 2x Range Resolution
+ 1 Ohm
400 Ohms @ 400 K
200 Ohms @ 200 K
100 Ohms @ 100 K
0 Ohms @ 50 K
40 Ohms @ 40 K
20 Ohms @ 20 K
10 Ohms @ 10 K
5 Ohms @ 5 K
4 Ohms @ 4 K
2 Ohms @ 2 K
1 Ohms @ 1 K
0.5 Ohms @ 500
Data Freshness 1.61 seconds maximum
DSP Notch Filter 20 Hz (- 3DB = 5.24 Hz)
Excitation Current Nomi-
nal (Range & Load Watt s
Dissipation)
9uA (50 K–4.1 uW), (100 K–8.1 uW), (200 K–16 uW), (400 K–32 uW)
90uA (5 K–40 uW), (10 K–81 uW), (20 K–160 uW), (40 K–320 uW)
200uA (500 K–20 uW), (1 K–40 uW), (2 K–80 uW), (4 K–160 uW)
Autorange Step Time 1.6 seconds to next higher or lower range
>= 10 seconds for a 500 Ohms to 400 K Ohms step change
Autorange Ohms Hyster-
esis
Ranges
Ohms Open > 440K
20K between 200K & 400K
10K between 100K & 200K
5K between 50K & 100K
19K between 40K & 50K
2K between 20K & 40K
1K between 10K & 20K
500 between 5K & 10K
1.9K between 4K & 5K
200 between 2K & 4K
100 between 1K & 2K
50 between 500 & 1K
DC Common Mode Rejec-
tion
>-120 dB
AC Common Mode Rejec-
tion
>-120 dB @ 60 Hz
Open Resistor Indicator Channel resistance = 999,999.999 Ohms
PAC Control Reads temperature reading or -32768 Ohms if over or under range
Maximum Operating
Common Mode Voltage
(Field Term to Logic Con-
nector) 500 VDC or peak VAC
Drift
Gain Tempco
Offset Tempco 30 PPM / °C
15 PPM / °C
Power Requirements 5 VDC (±0.15 ) @ 190 mA
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Torque, hold-down
screws 4 in-lb (0.45 N-m)
Torque, connector
screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL (pending), CE (pending)
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
16
DATA SHEET
Form 1065-150206
Thermistor Input Module 0–400 K (continued)
Auto-range Curves
The following table shows temperatures in °C and °F that
correlate with resistance values in Ohms for the generic curve
types for four popular thermistors using the Steinhart-Hart
equation. Choose the curve type for your application in
PAC Control or PAC Manager when you configure a SNAP-
AIR400K-8 module.
Choose a 2-wire thermistor value with a resistance over the
target temperature range that is much larger than the lead
resistance for your application
Lower value curves (2252 or 3K) work best at cooler
temperatures (< 25 °C or 77 °F) because long lead wire
resistance can add significant errors to the measurement.
SNAP-AIR400K-8 Auto-range Curves Table
2252 curve 3K curve 10K type 3 curve 10K type 2 curve
Temp °C Temp °F Resistance (Ohms)
-40 -40 75,769.0 100,935.0 239,686.0 336,450.0
-35 -31 54,647.0 72,798.0 179,200.0 242,660.0
-30 -22 39,851.0 53,088.0 135,185.0 176,960.0
-25 -13 29,368.0 39,123.0 102,861.0 130,410.0
-20 -4 21,861.0 29,122.0 78,913.0 97,072.0
-15 5 16,429.0 21,885.0 61,020.0 72,951.0
-10 14 12,459.0 16,598.0 47,543.0 55,326.0
-5 23 9,532.0 12,698.0 37,313.0 42,326.0
0 32 7,353.0 9,795.0 29,490.0 32,650.0
5 41 5,718.0 7,617.0 23,457.0 25,391.0
10 50 4,481.0 5,970.0 18,780.0 19,899.0
15 59 3,538.0 4,713.0 15,130.0 15,711.0
20 68 2,813.0 3,748.0 12,263.0 12,492.0
25 77 2,252.0 3,000.0 10,000.0 10,000.0
30 86 1,814.0 2,417.0 8,194.0 8,057.0
35 95 1,471.0 1,959.0 6,752.0 6,531.0
40 104 1,200.0 1,598.0 5,592.0 5,326.0
45 113 983.8 1,311.0 4,655.0 4,368.0
50 122 811.2 1,081.0 3,893.0 3,602.0
55 131 672.5 895.8 3,271.0 2,986.0
60 140 560.3 746.3 2,760.0 2,488.0
65 149 469.0 624.8 2,339.0 2,083.0
70 158 394.5 525.5 1,990.0 1,752.0
75 167 333.1 443.8 1,700.0 1,479.0
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
17
80 176 282.7 376.6 1,458.0 1,255.0
85 185 240.9 320.9 1,255.0 1,070.0
90 194 206.2 274.6 1,084.0 915.4
95 203 177.1 236.0 939.3 786.6
100 212 152.8 203.6 816.8 678.6
105 221 132.3 176.3 712.6 587.6
110 230 115.0 153.2 623.6 510.6
115 239 100.3 133.6 547.3 445.2
120 248 87.7 116.9 481.8 389.6
125 257 77.0 102.6 425.3 341.9
130 266 67.8 90.3 376.4 301.0
135 275 59.9 79.7 334.0 265.8
140 284 53.0 70.6 297.2 235.4
145 293 47.1 62.7 265.1 209.0
150 302 41.9 55.8 237.0 186.1
The information in this table is provided by Automation Components, Inc.
SNAP-AIR400K-8 Auto-range Curves Table (continued)
2252 curve 3K curve 10K type 3 curve 10K type 2 curve
Temp °C Temp °F Resistance (Ohms)
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
18
DATA SHEET
Form 1065-150206
RTD Input Modules
Wiring
RTD input modules are designed for three-wire connections,
shown in the diagram below.
If you use a four-
wire connection
(shown at the
bottom right),
DO NOT connect
the fourth wire,
as it will cause
errors in the
readings.
Two-wire
connections
are not
recommended,
as they will
degrade
accuracy and
stability.
Part Number Description
SNAP-AIRTD-1K Two-channel 1000 ohm platinum RTD input
SNAP-AIRTD Two-channel 100 ohm platinum RTD input
SNAP-AIRTD-10 Two-channel 10 ohm copper RTD input
SNAP-AIRTD, SNAP-AIRTD-1K, and SNAP-AIRTD-10
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
Description
The SNAP-AIRTD and SNAP-AIRTD-1K platinum and the
SNAP-AIRTD-10 copper modules are usually used for
temperature inputs. They can also be used to make high-
resolution resistance measurements.
On all three modules, the two inputs share the same
reference terminal. Make sure you use isolated RTD probes.
The SNAP-AIRTD-10 and SNAP-AIRTD-1K require a SNAP
PAC brain or R-series controller.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
19
RTD Input Modules (continued)
Specifications
SNAP-AIRTD-1K SNAP-AIRTD SNAP-AIRTD-10
3-wire RTD input
1000 ohm platinum @ 0 °C
α= 0.00385
1000 ohm nickel @ 0 °C
α= 0.00618
1000 ohm nickel @ 70 °C
α= 0.00637
100 ohm platinum; α= 0.00385
100 ohm nickel, -60 to 250 °C
120 ohm nickel, -80 to 260 °C 10 ohm copper; α= 0.00428
Input Temperature Range -200 °C to 850 °C
(-328° to +1,582° F) -200 °C to 850 °C
(-328° to +1,582° F) -180 °C to 260 °C
(-292° to +500° F)
Input Range 0 to 4000 ohms 0 to 400 ohms 0 to 25 ohms
Over-Range Limit to 4400 ohms to 440 ohms to 27.5 ohms
Resolution (average) 0.042 °C (0.16 ohms) 0.042 °C (0.016 ohms) 0.026 °C (0.001 ohms)
Input Filtering -3 dB @ 0.1 Hz -3 dB @ 0.1 Hz -3 dB @ 100 Hz
Data Freshness (Max) 100 ms 100 ms 168 ms
Lead Compensation Automatic when used with
SNAP brains Automatic when used with
SNAP brains Automatic when used with
SNAP PAC brains
DC Common Mode Rejection >-120 dB >-120 dB >-120 dB
AC Common Mode Rejection >-120 dB at 60 Hz >-120 dB at 60 Hz >-120 dB at 60 Hz
Excitation (typical) 0.256 mA constant current 1.25 mA constant current 5.4 mA constant current
Maximum Lead Resistance >40 ohms single wire (all
leads to be equal resistance) >40 ohms single wire (all leads
to be equal resistance) >15 ohms single wire (all
leads to be equal resistance)
Maximum Fault Voltage at Input
(between any 2 field wires) ±15 V ±15 V ±15 V
Maximum Operating Common
Mode Voltage 250 V 250 V 250 V
Accuracy
From factory
After setting gain and offset 0.8 °C
0.6 °C 0.8 °C
0.6 °C 0.6 °C
0.5 °C
Isolation 1500 V 1500 V 1500 V
Power Requirements 5 VDC (±0.15) @ 190 mA 5 VDC (±0.15) @ 190 mA 5 VDC (±0.15) @ 190 mA
Operating Temperature -20 °C to 70 °C -20 °C to 70 °C -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C -40 °C to 85 °C -40 °C to 85 °C
Wire size 22 to 14 AWG 22 to 14 AWG 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m) 4 in-lb (0.45 N-m) 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m) 5.26 in-lb (0.6 N-m) 5.26 in-lb (0.6 N-m)
Agency Approvals CE, RoHS, DFARS UL, FM, CE, RoHS, DFARS CE, RoHS, DFARS
Warranty Lifetime Lifetime Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
20
DATA SHEET
Form 1065-150206
ICTD Temperature Input Module, Two or Four Channels
Description
SNAP-AICTD and SNAP-AICTD-4 modules provide
temperature input data from any industry-standard Integrated
Circuit Temperature Device (ICTD). The SNAP-AICTD has two
channels, and the SNAP-AICTD-4 has four channels. See the
table on page 3 for I/O processor compatibility.
The simple two-wire connections are made to the pluggable
terminal strip on top of the module. Up to 2,000 feet of
ordinary hook-up wire is used to connect the sensor to the
input terminal strip.
Both modules are compatible with all industry-standard ICTD
probes, including the AD-590 family from Analog Devices and
Opto 22’s part number ICTD.
Specifications
SNAP-AICTD (Two channels)
Four-channel module wiring is shown on the next page.
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
Part Number Description
SNAP-AICTD Two-channel analog temperature input,
ICTD
SNAP-AICTD-4 Four-channel analog temperature input,
ICTD
Input Range with ICTD
Probe -40 °C to +100 °C
Module Input Range
Zero Scale
Full Scale -273 °C
+150 °C
Resolution 0.017 °C
Accuracy with ICTD Probe ±0.8 °C
Sensitivity 1.0 microamps/ °C
Data Freshness (Max) 167 ms (2-channel module)
355 ms (4-channel module)
DC Common Mode Rejec-
tion >-120 dB
AC Common Mode Rejec-
tion >-120 dB @ 60 Hz
Maximum Operating Com-
mon Mode Voltage 250 V
Isolation 1500 V
Power Requirements 5 VDC (± .015 ) @ 150 mA
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
21
ICTD Temperature Input Module (continued)
SNAP-AICTD-4 (Four channels)
Two-channel module wiring is shown on the previous page.
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
22
DATA SHEET
Form 1065-150206
ICTD Temperature Input Module, Eight Channels
Description
The SNAP-AICTD-8 module provides temperature input data
from any industry-standard Integrated Circuit Temperature
Device (ICTD). It has eight channels of input. The SNAP-AICTD-
8 can be used only with SNAP PAC brains and rack-mounted
controllers (standard wired and Wired+Wireless models).
The simple two-wire connections are made to the terminal
strip on top of the module. Up to 2,000 feet of ordinary hook-
up wire is used to connect the sensor to the input terminal
strip.
The module is compatible with all industry-standard ICTD
probes, including the AD-590 family from Analog Devices and
Opto 22’s part number ICTD.
Specifications
SNAP-AICTD-8
CH 2CH 1CH 0 CH 3
12345678
WHT
BLK
CH 6CH 5CH 4 CH 7
12345678
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
ICTD Source
NOTE: Terminals 2, 4, 6, and 8 on both
connectors are connected internally.
1
2345678
1
2345678
Part Number Description
SNAP-AICTD-8 Eight-channel analog temperature input,
ICTD
Input Range with ICTD Probe -40 °C to +100 °C
Module Input Range
Zero Scale
Full Scale -273 °C
+150 °C
Data Freshness (Max) 0.28 seconds
Resolution 0.017 °C
Accuracy with ICTD Probe ±0.8 °C
Sensitivity 1.0 mA/ °C
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection > -120 dB @ 60 Hz
Maximum Operating Common
Mode Voltage 250 V
Isolation 1500 V
Power Requirements 5 VDC (± .015 ) @ 170 mA
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 1.7 in-lb (0.19 N-m)
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
23
Thermocouple/Millivolt Input Module
Thermocouple Polarity and Range
Type - + Range
E Red Purple -270°C to +1,000 °C
J Red White -210°C to +1,200 °C
K Red Yellow -270°C to +1,372 °C
SNAP-AITM
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
Description
The SNAP-AITM module provides two channels of analog
to digital conversion. Each channel on the module can be
configured for -150 mV DC to +150 mV DC or -75 mV DC to
+75 mV DC, or for type E, J, or K thermocouple operation.
Since both inputs share the same reference terminal, use
isolated probes for thermocouple inputs. If you need
isolated channels on the same module, see Opto 22 form
#1182.
Specifications
Part Number Description
SNAP-AITM Two-channel analog type E, J, or K thermo-
couple or -150 mV to +150 mV input or -75
mV to +75 mV input
Input Range From -150 mV to +150 mV
From -75 mV to +75 mV
Over-Range Limits From -165 to +165 mV
(+/-150 mV range)
From -82.5 to +82.5 mV
(+/-75 mV range)
Resolution 6 microvolts from -150 to +150 mV
3 microvolts from -75 to +75 mV
Cold Junction Temperature
Compensation Automatic when used with
SNAP I/O processors
Input Filtering -3 dB @ 7 Hz
Input Response Time
(% of span/delta V/delta time) 63.2%/95 mV/23 mS
Data Freshness (Max) 167 ms (+/-150 mV)
334 ms (+/-75 mV)
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input ±15 volts
Maximum Operating Com-
mon Mode Voltage 250 V
Accuracy at Full Scale 0.06% (90 microvolts) @ 150 mV
0.1% (75 microvolts) @ 75 mV
Drift: Gain Temperature
Coefficient 5 microvolts / °C
Drift: Offset Temperature
Coefficient 2 microvolts / °C
Thermocouple Accuracy [°C]
From factory
After user gain and offset
commands
± 2.0 (E, J, and K)
± 0.8
Isolation 1500 V
Power Requirements 5 VDC (±0.15) @ 170 mA
Input Resistance 100 Megohms (each channel)
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 3 in-lb (0.34 N-m)
Agency Approvals FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
24
DATA SHEET
Form 1065-150206
Thermocouple/Millivolt Input Module
Specifications
Part Number Description
SNAP-AITM-2 Two-channel analog type B, C, D, G, N, T, R, or S
thermocouple or -50 mV to +50 mVDC input
or -25 mV to +25 mVDC input
Input Range From -50 mV to +50 mVDC
From -25 mV to +25 mVDC
Over-range Limits From -55 to +55 mV
(+/-50 mV range)
From -27.5 to +27.5 mV
(+/-25 mV range)
Resolution 2 microvolts from -50 mV to +50 mV
1 microvolts from -25 mV to +25 mV
Cold Junction Temperature
Compensation Automatic when used with SNAP
brains
Input Filtering -3 dB @ 2.4 Hz
Input Response Time
(% of span/delta V/delta
time) 63.2%/31.5 mV/66 ms
Data Freshness (Max) 167 ms (+/- 50 mV)
334 ms (+/- 25 mV)
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input ±15 volts
Maximum Operating Com-
mon Mode Voltage 250 V
Accuracy at Full Scale 0.1% (50 microvolts) @ 50 mV
0.2% (50 microvolts) @ 25 mV
Drift: Gain Temperature
Coefficient 5 microvolts / °C
Drift: Offset Temperature
Coefficient 2 microvolts / °C
Thermocouple Accuracy [°C] B, R, S C, D, G T, N
From factory ±5 ±4 ±3
After user gain and offset
commands ±3 ±2 ±2
Isolation 1500 V
Power Requirements 5 VDC (±0.15 ) @ 170 mA
Input Resistance 100 Megohms (each channel)
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Agency Approvals FM, CE, RoHS, DFARS
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 3 in-lb (0.34 N-m)
Warranty Lifetime
Thermocouple Polarity and Range
Type - + Range
B RED GRAY +42° C to +1,820 °C
C, D, G RED WHITE 0° C to +2,320 °C
N RED ORANGE -270° C to +1,300 °C
R, S RED BLACK -50° C to +1,768 °C
T RED BLUE -270° C to +400 °C
SNAP-AITM-2
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
Description
The SNAP-AITM-2 module provides an input range of ±50
mV, ±25 mV, or Type B, C, D, G, N, T, R, or S thermocouple.
Since both inputs share the same reference terminal, use
isolated probes for thermocouple inputs. If you need
isolated channels on the same module, see Opto 22 form
#1182.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
25
Thermocouple/Millivolt Input Module
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
26
DATA SHEET
Form 1065-150206
0 to 250 Volt RMS AC/DC Input Module
Description
The SNAP-AIVRMS module provides an input range of 0 to 250
volts AC or DC. The SNAP-AIVRMS module may be used to
monitor 120/240-volt AC/DC and 12/24/48-volt AC/DC
system voltage.
Terminals 3, 4, 7, and 8 share a common connection inside the
module. Make sure you observe polarity when connecting the
second channel. To avoid a potentially hazardous short,
double-check wiring before turning on the voltage to be
monitored.
If you need a module with channel-to-channel isolation, see
form #1182, the SNAP Isolated Analog Input Modules Data
Sheet.
Specifications
SNAP-AIVRMS
Part Number Description
SNAP-AIVRMS Two-channel 0 to 250 V RMS AC/DC input
Input Range 0 to 250 V RMS AC/DC
Input Over-Range To 275 V
Input Resistance 1 M ohms
Accuracy ±0.2 V and ±0.2% reading
Resolution 10 mV
DC Reversal ± 0.4 V (.16%)
Input Response Time
(Step Change) 5% (12.5 V) in 100 mS
63.2% (158 V) in 200 mS
99% (248 V) in 1200 mS
Data Freshness (Max) 32.3 ms
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating
Common Mode Voltage 250 V
Isolation 1500 V
Power Requirements 5 VDC (±0.15 V) at 170 mA
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
27
Voltage Input Module, -10 VDC to +10 VDC or -5 VDC to +5 VDC,
Two or Four Channels
Specifications
Part Number Description
SNAP-AIV Two-channel analog voltage input -10 to +10 VDC
SNAP-AIV-4 Four-channel analog voltage input -10 to +10 VDC
Input Range From -10 volts to +10 volts
From -5 volts to +5 volts
Over-Range Limits From -11 to +11 volts (+/-10 V range)
From -5.5 to +5.5 volts (+/-5 V range)
Resolution 0.4 mV when configured -10 to +10 volts
0.2 mV when configured -5 to +5 volts
Input Filtering -3 dB @ 64 Hz
Input Response Time
(% of span/ delta V / delta t) 63.2% / 6.7 V / 10 ms
Data Freshness (Max) 11.5 ms (2-channel, +/- 10 VDC)
23 ms (2-channel, +/- 5 VDC
23 ms (4-channel, +/- 10 VDC)
46 ms (4-channel, +/- 5 VDC
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input 220 VAC or 300 VDC
Maximum Operating Com-
mon Mode Voltage 250 V
Accuracy 0.05%, 5 mV @ 10 VDC
2.5 mV @ 5 VDC
Gain Temperature Coefficient 30 PPM/ °C
Offset Temperature Coeffi-
cient 15 PPM/ °C
Isolation 1500 V
Power Requirements 5 VDC (±0.15) @ 170 mA
Input Resistance 1 M ohms (each channel; both channels
share the same reference point)
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP-AIV (Two channels)
Four-channel module wiring is shown on page 28.
IMPORTANT: The mounting rack connector has 24 pins;
the module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
Description
The SNAP-AIV and SNAP-AIV-4 modules can be
configured for either -10 VDC to +10 VDC or -5 VDC to +5
VDC operation on each channel. The SNAP-AIV provides
two channels, and the SNAP-AIV-4 four. If you need a
module with more channels, see page 29. See the table
on page 3 for I/O processor compatibility.
Note that all channels share a common reference
terminal. If you need two isolated channels on the same
module, see Opto22 form #1182.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
28
DATA SHEET
Form 1065-150206
Voltage Input Module, -10 VDC to +10 VDC or -5 VDC to +5 VDC,
Four Channels (continued)
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
29
Voltage Input Module, -10 VDC to +10 VDC or -5 VDC to +5 VDC,
Eight Channels
Note that all channels share a common reference terminal. If you need
two isolated channels on the same module, see Opto22 form #1182.
Specifications
Part Number Description
SNAP-AIV-8 Eight-channel analog voltage input -10 to +10 VDC
Input Range F rom -10 volts to +10 volts
From -5 volts to +5 volts
Over-Range Limits From -11 to +11 volts (+/-10 V range)
From -5.5 to +5.5 volts (+/-5 V range)
Resolution 0.4 mV when configured -10 to +10 volts
0.2 mV when configured -5 to +5 volts
Input Filtering -3 dB @ 64 Hz
Data Freshness (Max) 0.28 seconds
DC Common Mode
Rejection >-120 dB
AC Common Mode
Rejection >-120 dB @ 60 Hz
Maximum Survivable
Input 220 VAC or 300 VDC
Maximum Operating
Common Mode Voltage 250 V
Accuracy 0.05%, 5 mV @ 10 VDC
2.5 mV @ 5 VDC
Gain Temperature Coeffi-
cient 30 PPM/ °C
Offset Temperature Coef-
ficient 15 PPM/ °C
Isolation 1500 V
Power Requirements 5 VDC (±0.15) @ 170 mA
Input Resistance 1 M ohms (all channels share the same
reference point)
Ambient Temperature:
Operating
Storage -20 °C to 70 °C
-40 °C to 85 °C
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 1.7 in-lb (0.19 N-m)
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
SNAP-AIV-8
Voltage Source
NOTE: Terminals 2, 4, 6, and 8 on both
connectors are connected internally.
CH 2CH 1CH 0 CH 3
1
2345678
1
2345678
CH 6CH 5CH 4 CH 7
Description
The SNAP-AIV-8 module can be configured for either -
10 VDC to +10 VDC or -5 VDC to +5 VDC operation on
each of its eight input channels. (If you need a module
with more channels, see page 30.) The SNAP-AIV-8 can
be used only with SNAP PAC brains and rack-mounted
controllers (standard wired and Wired+Wireless
models).
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
30
DATA SHEET
Form 1065-150206
Voltage Input Module, -10 VDC to +10 VDC or -5 VDC to +5 VDC,
32 Channels
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
31
Voltage Input Module -10 VDC to +10 VDC or -5 VDC to +5 VDC (continued)
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
32
DATA SHEET
Form 1065-150206
Millivolt Input Module
Specifications
Part Number Description
SNAP-AIMV2-4 Four-channel -50 to +50 mV input or
-25 mV to +25 mV input
Input Range From -50 mV to +50 mV
From -25 mV to +25m V
Over-Range Limits From -55 to +55 mV
(+/-50 mV range)
From -27.5 to +27.5 mV
(+/-25 mV range)
Resolution 2 microvolts (-50 mV to +50 mV)
1 microvolt (-25 mV to +25 m V)
Input Filtering -3 dB @ 2.4Hz
Input Response Time
(% of span/delt a V/delta time) 63.2%/31.5 mV/66 ms
Data Freshness (Max) 335 ms (+/- 50 mV)
668 ms (+/- 25 mV)
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input ±15 volts
Maximum Operating Com-
mon Mode Voltage 250 V
Accuracy at Full Scale 0.1% (50 microvolts) @ 50m V
0.2% (50 microvolts) @ 25 mV
Drift: Gain Temperature Coef-
ficient 3 microvolts / °C
Drift: Offset Temperature
Coefficient 2 microvolts / °C
Isolation 1500 V
Power Requirements 5 VDC (±0.15 ) @ 170 mA
Input Resistance - Single
Ended 100 Megohms (each channel)
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP-AIMV2-4
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
Description
The SNAP-AIMV2-4 module provides four channels of
analog to digital conversion. See the table on page 3 for I/O
processor compatibility.
Each channel on the module can be configured for -50 mV
DC to +50 mV DC or -25 mV DC to +25 mV DC.
Note that all inputs share the same reference terminal.
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
33
Millivolt Input Module
Specifications
SNAP-AIMV-4
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
Description
The SNAP-AIMV-4 module provides four channels of analog to
digital conversion. See the table on page 3 for I/O processor
compatibility.
Each channel on the module can be configured for -150 mV
DC to +150 mV DC or -75 mV DC to +75 mV DC.
Note that all inputs share the same reference terminal.
Part Number Description
SNAP-AIMV-4 Four-channel -150 to +150 mV or
-75 to +75 mV input
Input Range From -150 mV to +150 mV
From -75 mV to +75m V
Over-Range Limits From -165 to +165 mV
(+/-150 mV range)
From -82.5 to +82.5 mV
(+/-75 mV range)
Resolution 6 microvolts (-150 mV to +150 mV)
3 microvolts (-75 mV to +75 mV)
Input Filtering -3 dB @ 7 Hz
Input Response Time (%
of span/delta V/delta time) 63.2%/95 mV/23 ms
Data Freshness (Max) 335 ms (+/- 150 mV)
668 ms (+/- 75 mV)
DC Common Mode
Rejection >-120 dB
AC Common Mode
Rejection >-120 dB @ 60 Hz
Maximum Survivable
Input ±15 volts
Maximum Operating
Common Mode Voltage 250 V
Accuracy at Full Scale 0.06% (90 microvolts) @ 150 mV
0.1% (75 microvolts) @ 75 mV
Drift: Gain Temperature
Coefficient 3 microvolts / °C
Drift: Offset Temperature
Coefficient 2 microvolts / °C
Isolation 1500 V
Power Requirements 5 VDC (±0.15 ) @ 170 mA
Input Resistance - Single
Ended 100 Megohms (each channel)
Operating Temperature -20 °C to 70 °C
Storage Temperature -40 °C to 85 °C
Wire size 22 to 14 AWG
Torque, hold-down screws 4 in-lb (0.45 N-m)
Torque, connector screws 5.26 in-lb (0.6 N-m)
Agency Approvals UL, FM, CE, RoHS, DFARS
Warranty Lifetime
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
34
DATA SHEET
Form 1065-150206
Alternate Wiring Diagram
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
35
Dimensional Drawing
All Two- and Four-channel Modules, except SNAP-AITM-2
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
36
DATA SHEET
Form 1065-150206
Dimensional Drawing
SNAP-AITM-2 Modules
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
37
Dimensional Drawing
SNAP-AITM-8 and SNAP-AITM-8-FM Modules
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
38
DATA SHEET
Form 1065-150206
Dimensional Drawing
SNAP-AICTD-8, SNAP-AIMA-8, SNAP-AIV-8, and SNAP-AIR400K-8 Modules
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
39
Dimensional Drawing
All 32-Channel Modules
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
40
DATA SHEET
Form 1065-150206
Dimensional Drawing
IMPORTANT: The mounting rack connector has 24 pins; the
module connector has 20 pins. The extra pins on the
mounting rack connector prevent misalignment of the
module during installation.
All Modules
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
41
Dimensional Drawing
Height on Rack: All Two- and Four-channel Modules, except SNAP-AITM-2
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
42
DATA SHEET
Form 1065-150206
Dimensional Drawing
Height on Rack: 32-Channel Modules
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
43
Dimensional Drawinge
Height on Rack: SNAP-AITM-2 Module
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules
PAGE
44
DATA SHEET
Form 1065-150206
Dimensional Drawing
Height on Rack: SNAP-AITM-8 and SNAP-AITM-8-FM Modules
SNAP Analog Input Modules
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2001–2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP Analog Input Modules DATA SHEET
Form 1065-150206
PAGE
45
Dimensional Drawing
Height on Rack: SNAP-AICTD-8, SNAP-AIMA-8, and SNAP-AIV-8
More About Opto 22
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-131203
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2014 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Products
Opto 22 develops and manufactures reliable, flexible, easy-to-use
hardware and software products for industrial automation,
energy management, remote monitoring, and data acquisition
applications.
groov
groov
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monitor and control systems from Allen-Bradley, Siemens,
Schneider Electric, Modicon, and many more. Web-based
groov
puts mobile-ready gadgets at your fingertips. Tag them from your
existing tag database, and they automatically scale for use on any
device with a modern web browser. See
groov.com
for more
information and your free trial.
SNAP PAC System
Designed to simplify the typically complex
process of selecting and applying an
automation system, the SNAP PAC
System consists of four integrated
components:
•SNAP PAC controllers
•PAC Project™ Software Suite
•SNAP PAC brains
•SNAP I/O™
SNAP PAC Controllers
Programmable automation controllers
(PACs) are multifunctional, modular controllers based on open
standards.
Opto 22 has been manufacturing PACs for over two decades. The
standalone SNAP PAC S-series, the rack-mounted SNAP PAC R-
series, and the software-based SoftPAC™ all handle a wide range
of digital, analog, and serial functions for data collection, remote
monitoring, process control, and discrete and hybrid
manufacturing.
SNAP PACs are based on open Ethernet and Internet Protocol (IP)
standards, so you can build or extend a system easily, without the
expense and limitations of proprietary networks and protocols.
Wired+Wireless™ models are also available.
PAC Project Software Suite
Opto 22’s PAC Project Software Suite provides full-featured, cost-
effective control programming, HMI (human machine interface)
development and runtime, OPC server, and database connectivity
software for your SNAP PAC System.
Control programming includes both easy-to-learn flowcharts and
optional scripting. Commands are in plain English; variables and I/
O point names are fully descriptive.
PAC Project Basic offers control and HMI tools and is free for
download on our website,
www.opto22.com
. PAC Project
Professional, available for separate purchase, adds one SoftPAC,
OptoOPCServer, OptoDataLink, options for controller redundancy
or segmented networking, and support for legacy Opto 22 serial
mistic™
I/O units.
SNAP PAC Brains
While SNAP PAC controllers provide central control and data
distribution, SNAP PAC brains provide distributed intelligence for
I/O processing and communications. Brains offer analog, digital,
and serial functions, including thermocouple linearization; PID
loop control; and optional high-speed digital counting (up to 20
kHz), quadrature counting, TPO, and pulse generation and
measurement.
SNAP I/O
I/O provides the local connection to sensors and equipment.
Opto 22 SNAP I/O offers 1 to 32 points of reliable I/O per module,
depending on the type of module and your
needs. Analog, digital, and serial modules are
all mixed on the same mounting rack and
controlled by the same processor (SNAP PAC
brain or rack-mounted controller).
Quality
Founded in 1974, Opto 22 has established a
worldwide reputation for high-quality products.
All are made in the U.S.A. at our manufacturing
facility in Temecula, California. Because we
test each product twice before it leaves our
factory, rather than only testing a sample
of each batch, we can guarantee most
solid-state relays and optically isolated I/O
modules for life.
Free Product Support
Opto 22’s California-based Product Support Group offers free,
comprehensive technical support for Opto 22 products. Our staff
of support engineers represents decades of training and
experience. Support is available in English and Spanish by phone
or email, Monday–Friday, 7 a.m. to 5 p.m. PST.
Additional support is always available on our website: how-to
videos, OptoKnowledgeBase, self-training guide, troubleshooting
and user’s guides, and OptoForums.
In addition, hands-on training is available for free at our Temecula,
California headquarters, and you can
register online
.
Purchasing Opto 22 Products
Opto 22 products are sold directly and through a worldwide
network of distributors, partners, and system integrators. For
more information, contact Opto 22 headquarters at 800-321-
6786 or 951-695-3000, or visit our website at
www.opto22.com
.
www.opto22.com