SNAP Isolated Analog Input
Modules
PAGE
1
DATA SHEET
Form 1182-161011
SNAP Isolated 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
© 2006–2016 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.
Features
Channel-to-channel isolation
Rugged packaging and convenient pluggable wiring.
Accepts 22 to 14 AWG wire.
Factory calibrated; no user adjustment necessary
Out-of-range indication
Operating temperature -20 °C to 70 °C
Description
SNAP I/O isolated analog input modules provide two or more
channels isolated from each other, thereby eliminating
problems caused by ground loop currents. These isolated
analog modules are part of Opto 22’s SNAP PAC System and
mount on SNAP PAC racks with an I/O processor (brain or on-
the-rack controller). SNAP isolated analog input modules are
compatible with all SNAP PAC brains and rack-mounted
controllers, including Wired+Wireless.
Since many SNAP analog input modules are software-
configurable and handle a wide variety of signal levels, a small
number of modules can support a wide range of input
requirements. Modules provide high resolution for precise
signal levels, and all SNAP analog modules are factory
calibrated. Part numbers ending in -FM are Factory Mutual
approved. Dimensional drawings start on page 14.
SNAP analog input modules have an on-board microprocessor
to provide module-level intelligence, making them an ideal
choice for original equipment manufacturers (OEMs). For more
information about standalone SNAP analog modules, see the
SNAP I/O Module Integration Guide (form 876).
SNAP racks have a retention rail locking system. Use two 4-40
by ½-inch standard machine screws to hold each module
securely in position on the SNAP rack (recommended torque:
4 inch pounds [0.45 Newton meters]).
Notes for legacy hardware: Most isolated analog input
modules can be used with SNAP Simple, SNAP Ethernet, SNAP
Ultimate, and SNAP mistic brains such as the serial B3000, and
with M-series or B-series mounting racks. For exceptions, see
individual module descriptions.
Isolation
All SNAP analog input modules are isolated from all other
modules and from the I/O processor. In addition, the modules
in this data sheet have all channels isolated from each other.
Channel-to-channel isolation gives you complete freedom
from ground-loop problems even on grounded devices
connected to channels on the same module.
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 provides protection for sensitive control
electronics from industrial field signals.
Part Numbers
Part Description Pg
SNAP-AIARMS-i
SNAP-AIARMS-i-FM*
Isolated two-channel 0 to 10 amp
RMS AC/DC input 2
SNAP-AIVRMS-i
SNAP-AIVRMS-i-FM*
Isolated two-channel 0 to 250 V
RMS AC/DC input 3
SNAP-AIMA-i Isolated two-channel analog cur-
rent input -20 mA to +20 mA 4
SNAP-AIMA-iSRC
SNAP-AIMA-iSRC-FM*
Isolated two-channel analog cur-
rent input -20 mA to +20 mA, with
loop sourcing
5
SNAP-AIMA2-i Isolated two-channel analog cur-
rent input -1 mA to +1 mA 6
SNAP-AIRATE-HFi
Isolated two-channel analog fre-
quency input, 2 Hz to 500 kHz or
20 Hz to 500 kHz
7
SNAP-AITM-i
Isolated two-channel analog type
E, J, or K thermocouple or
±150 mV or ±75 mV input
9
SNAP-AITM2-i
Isolated two-channel analog type
B, C, D, G, N, T, R, or S thermocou-
ple or ±50 mV or ±25 mV input
10
SNAP-AITM-4i
Isolated four-channel analog type
B, C, D, E, G, J, K, N, R, S, or T
thermocouple or ±150 mV, ±75 mV,
±50mV, or ±25mV input
11
SNAP-AIV-i Isolated two-channel analog volt-
age input ±10 VDC or ±5 VDC 12
SNAP-AIV2-i Isolated two-channel analog volt-
age input ±100 VDC or ±50 VDC 13
* Factory Mutual approved
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
2
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Description
The SNAP-AIARMS-i and SNAP-AIARMS-i-FM modules provide
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. These modules may also be used to
monitor AC current to greater than a 100-amp range, using a
current transformer of suitable ratio. The SNAP-AIARMS-i-FM
module is Factory Mutual approved.
The two channels are isolated from each other; they do not share
any field connection. These modules are ideal for differential
current measurements.
Specifications
Part Number Description
SNAP-AIARMS-i
SNAP-AIARMS-i-FM
Isolated 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 µA
DC Reversal ±16 mA (0.16%)
Input Response Time
(Step Change)
63.2% (6.32 A) in 50 ms
99% (9.92 A) in 75 ms
Data Freshness (Max) 0.025 ms
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB at 60 Hz
Maximum Operating
Voltage Between Channels
Common Mode Voltage
250 V
250 V
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15 V) at 200 mA
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 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
FM (SNAP-AIARMS-FM only)
Warranty Lifetime
Isolated 0 to 10 Amp RMS AC/DC Input
Module
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 Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
3
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
© 2006–2016 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.
Description
The SNAP-AIVRMS-i and SNAP-AIVRMS-i -FM modules provide
an input range of 0 to 250 volts AC or DC. These modules may be
used to monitor 120/240-volt AC/DC and 12/24/48-volt AC/DC
system voltage. The SNAP-AIVRMS-i-FM module is Factory
Mutual approved.
The two channels are isolated from each other; they do not share
any field connection. These modules are ideal for differential
voltage measurements.
Specifications
Part Number Description
SNAP-AIVRMS-i
SNAP-AIVRMS-i-FM
Isolated 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 megohms
Accuracy ±0.2 V and ±0.2% reading
Resolution 10 mV
DC Reversal ± 0.2 V (0.08%)
Input Response Time
(Step Change)
63.2% (158 V) in 50 ms
99% (248 V) in 75 ms
Data Freshness 25 ms
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Operating
Voltage Between Channels
Common Mode Voltage
250 V
250 V
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15 V) at 200 mA
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 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
Isolated 0 to 250 Volt RMS AC/DC Input
Module
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 Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
4
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Specifications
Part Number Description
SNAP-AIMA-i Isolated two-channel analog current input
-20 mA to +20 mA
Input Range -20 mA to +20 mA
Maximum Over Range ± 10%
(= ± 27500 counts)
Resolution 0.8 µA
Input Response Time
(% of span/delta I/delta time) 99.9 %/19.9 µA/10 mS
Data Freshness 11 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 µA)
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
DRIFT: Gain Temperature Coef-
ficient 30 PPM/ °C
DRIFT: Offset Temperature
Coefficient 15 PPM/ °C
Power Requirements 5 VDC (±0.15 ) @ 200 mA
Input Resistance - Single Ended 200 ohms (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 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, FM, RoHS, DFARS
Warranty Lifetime
Isolated Current Input Module
-20 mA to +20 mA
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-AIMA-i module provides an input range of -20mA to
+20mA. The SNAP-AIMA-i has two channels that are isolated
from each other. This module DOES NOT supply loop excitation
current. See page 5 for a loop sourcing model.
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
5
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
© 2006–2016 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.
Description
The SNAP-AIMA-iSRC and SNAP-AIMA-iSRC-FM are similar to
the SNAP-AIMA-i module but include built-in loop sourcing
capability. With the connection of a single 24 V power
supply, these modules source 24 V for two 4–20 mA loops.
The two channels and their loop sources are isolated from
each other; they do not share any field connection. The
isolation allows you to independently wire one channel to a
loop with an external power supply and the other channel
to a loop powered through the module. In addition, each
loop sourced through the module is current limited so that
an external fault on one loop will not affect the other.
The SNAP-AIMA-iSRC-FM is Factory Mutual approved.
Part Number Description
SNAP-AIMA-iSRC
SNAP-AIMA-iSRC-FM
Isolated two-channel analog current
input -20 mA to +20 mA, with loop
sourcing
Isolated Current Input Module
-20mA to +20mA with Loop Sourcing
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.
Specifications
Input Range 0 to +20 mA with loop sourcing
-20 mA to +20 mA
Maximum Over Range ± 10%
(= ± 27500 counts)
Resolution 0.8 µA
Input Response Time
(% of span/delta I/delta time) 99.9 %/19.9 mA/10 ms
Data Freshness 11 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 µA)
DRIFT: Gain Temperature
Coefficient 30 PPM/ °C
DRIFT: Offset Temperature
Coefficient 15 PPM/ °C
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15) @ 200 mA
Power Requirements -
Loop Power (Input)
From separate field connector:
24 VDC nominal (70 mA max @ 24 V
input, both loops @ 20 mA),
30 VDC maximum
Loop Power (Output)
24 VDC (± 1.5 V) @ 20 mA
Open loop: 30 V maximum
Shorted loop: 24 mA nominal
LED on top of module Indicates that there is power to the
24v source supply 2-pin connector
Input Resistance 200 ohms (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 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
FM (SNAP-AIMA-iSRC-FM only)
Warranty Lifetime
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
6
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Description
The SNAP-AIMA2-i module provides an input range of -1 mA
to +1 mA. The SNAP-AIMA2-i has two channels that are
isolated from each other. This module DOES NOT supply
loop excitation current.
Specifications
Part Number Description
SNAP-AIMA2-i Isolated two-channel analog current input
-1 mA to +1 mA
Input Range -1 mA to +1mA
Maximum Over Range ± 10%
(= ± 27500 counts)
Resolution 0.04 µA
Input Response Time
(% of span/delta I/delta time) 99.9 %/19.9 µA/10 ms
Data Freshness 11 ms
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input 11 mA or 28 VDC
Maximum Operating
Common Mode Voltage 250 V
Accuracy 0.05% (0.05 µA)
DRIFT: Gain Temperature
Coefficient 30 PPM/ °C
DRIFT: Offset Temperature
Coefficient 15 PPM/ °C
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15 ) @ 200 mA
Input Resistance 5 K ohms (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 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
Isolated Current Input Module
-1 mA to +1 mA
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 Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
7
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
© 2006–2016 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.
Part Number Description
SNAP-AIRATE-HFi Isolated two-channel analog frequency input,
2 Hz–500 kHz or 20 Hz–500 kHz
Isolated Frequency Input Module
Description
The SNAP-AIRATE-HFi module provides frequency to digital
conversion. Each channel can be configured for a 0.1-second
measurement interval, providing an input range of 20 Hz to
500 kHz, or a 1-second measurement interval, providing an
input range of 2 Hz to 500 kHz. Data freshness is dependent
upon and directly related to the measurement interval.
Nine volts through a 3.6 kOhm pull-up resistor is provided
internally for each channel for use with devices that have
open-collector outputs. This feature eliminates the need for
you to provide the pull-up voltage supply and associated
wiring, barrier strips, and so on. The module works with TTL,
CMOS, and open-collector outputs.
The two channels on the module are isolated from each
other. Since these channels do not share any common
connections, grounded sensors and field devices may be
used with them.
This module requires a SNAP PAC controller or brain with
SNAP PAC firmware version 9.3e or higher. It cannot be used
with legacy controllers or brains.
See wiring diagrams on the following page.
Specifications
Input Range
2 Hz - 500 kHz at 1.0 s Data
Freshness
20 Hz - 500 kHz at 0.1 s Data
Freshness
Input Voltage Range
Sine wave >= 2000 Hz
Sine wave at 200 Hz
Sine wave at 20 Hz
Sine wave at 2 Hz
Square wave
Maximum survivable
3.0 V to 48 V
p-p
4.0 V to 48 V
p-p
5.0 V to 48 V
p-p
17 V to 48 V
p-p
3.0 V to 48 V
p-p
110 V
p-p
Input Impedance 55 kOhms
Input Coupling Single-ended AC
Pull-up Voltage 6 to 9 VDC
Pull-up Resistor 3.6 kOhm
Minimum Pulse Width 1 microsecond
Data Freshness* 100 ms at 20 Hz - 500 kHz
1.0 s at 2 Hz to 500 kHz
Resolution (Hz) f / (48,000,000 * Data Freshness),
where f is the current frequency
measurement
Accuracy
(at 1.0 s Data Freshness)
+- 0.005% of input for input greater
than 500 Hz
+- 0.005% of input plus an addi-
tional +- 0.006 Hz for input less
than 500 Hz
Maximum Operating Common
Mode Voltage
250 V Continuous
1500 V Transient
DC Common Mode Rejection > -120 dB
AC Common Mode Rejection > -120 dB at 60 Hz
Isolation: Channel to Channel 250 V Continuous
1500 V Transient
Power Consumption 1.05 W (210 mA @ 5 V)
Ambient Temperature
Operating
Storage
-20 to 70 °C
-40 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 range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
* User selectable. Default is 0.1 seconds.
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
8
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Isolated Frequency Input Module (cont’d)
SNAP-AIRATE-HFi Wiring Diagrams
The two channels on the module are isolated from each other. Since
these channels do not share any common connections, grounded
sensors and field devices may be used with them.
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
9
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
© 2006–2016 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.
Description
The SNAP-AITM-i 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. The two channels are isolated from each other.
Since these channels do not share any common
connections, grounded sensors and field devices may be
used with them.
Part Number Description
SNAP-AITM-i
Isolated two-channel analog type E, J, or K
thermocouple or -150 mV to +150 mV input
or -75 mV to +75 mV input
Isolated Thermocouple/
Millivolt Input Module
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.
Specifications
Input Range From -150 mV to +150 mV
From -75 mV to +75 mV
Maximum Over Range ± 10%
(= ± 27500 counts)
Resolution 6 µV from -150 mV to +150 mV
3 µV from -75 mV to +75 mV
Cold Junction Temperature
Compensation Automatic when used with SNAP brains
Input Filtering -3 dB @ 7 Hz
Input Response Time
(% of span/delta V/delta time) 63.2%/95 mV/23 mS
Data Freshness
65 ms for +/- 150 mV
130 ms for +/- 75 mV
130 ms for E-, J-, and K-type thermo-
couples
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 0.06% (90 µV) @ 150 mV (full scale)
0.1% (75 µV) @ 75 mV (full scale)
Drift: Gain Temperature
Coefficient 5 µV / °C
Drift: Offset Temperature Coef-
ficient 2 µV / °C
Thermocouple Accuracy [°C]
From factory
After user gain and offset
commands
± 2.0 (E, J, and K)
± 0.8
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15) @ 200 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)
Wire size range 22 to 14 AWG
Agency Approvals CE, FM, RoHS, DFARS
Warranty Lifetime
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 Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
10
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Specifications
Part Number Description
SNAP-AITM2-i
Isolated 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
Maximum Over Range ± 10% (= ± 27500 counts)
Resolution 2 µV from -50 mV to +50 mV
1 µV 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
65 ms for +/- 50 mV
130 ms for +/- 25 mV
130 ms for B-, R-, S-, and T-type
thermocouples
65 ms for C-, D-, G-, and N-type
thermocouples
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 0.1% (50 µV) @ 50 mV (full scale)
0.2% (50 µV) @ 25 mV (full scale)
Drift: Gain Temperature
Coefficient 5 µV / °C
Drift: Offset Temperature Coeffi-
cient 2 µV / °C
Thermocouple Accuracy [°C]
From factory
After user gain and offset com-
mands
B, R, S C, D, G T, N
±5 ±4 ±3
±3 ±2 ±2
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15 ) @ 200 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)
Wire size range 22 to 14 AWG
Agency Approvals CE, FM, RoHS, DFARS
Warranty Lifetime
Isolated Thermocouple/
Millivolt Input Module
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
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-AITM2-i module provides an input range of ±50
mV, ±25 mV, or Type B, C, D, G, N, T, R, or S thermocouple.
The two channels on the module are isolated from each
other. Since these channels do not share any common
connections, grounded sensors and field devices may be
used with them.
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
11
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
© 2006–2016 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.
Isolated Thermocouple/
Millivolt Input Module
Specifications
Input Range
From -150 mV to +150 mVDC
From -75 mV to +75 mVDC
From -50 mV to +50 mVDC
From -25 mV to +25 mVDC
Maximum Over Range ± 10%
(= ± 27500 counts)
Resolution
6 µV from -150 mV to +150 mV
3 µV from -75 mV to +75 mV
2 µV from -50 mV to +50 mV
1 µV from -25 mV to +25 mV
Cold Junction Temperature
Compensation
Automatic when used with SNAP PAC
brains
Input Filtering -3 dB @ 5 Hz
Data Freshness mV input: 75 ms
Thermocouple input: 140 ms
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
0.06% (90 µV) @ 150 mV (full scale)
0.1% (75 µV) @ 75 mV (full scale)
0.1% (50 µV) @ 50 mV (full scale)
0.2% (50 µV) @ 25 mV (full scale)
Drift: Gain Temperature
Coefficient 5 µV / °C
Drift: Offset Temperature Coeffi-
cient 2 µV / °C
Thermocouple Accuracy [°C] B,R,S C,D,G E,J,K N,T
From factory ±5.0 ±4.0 ± 2.0 ±3.0
After user gain and offset com-
mands ±3.0 ±2.0 ± 0.8 ±2.0
Isolation: Transformer 1500 V
Isolation: Channel to Channel 250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15 ) @ 150 mA
Input Resistance 100 megohms (each channel)
Ambient Temperature:
Operating
Storage
-20 °C to 70 °C
-40 °C to 85 °C
Torque, connector screws 3 in-lb (0.34 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
+
CH0
+
CH1
+
CH2
+
CH3
Part Number Description
SNAP-AITM-4i
Isolated four-channel analog type B, C, D, E,
G, J, K, N, R, S, or T thermocouple or ±150
mV, ±75 mV, ±50 mV, or ±25 mV input
Type - + Range
BRedGray
+42 °C to +1,820 °C
C, D, G Red White 0 °C to +2,320 °C
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
N Red Orange -270 °C to +1,300 °C
R, S Red Black -50 °C to +1,768 °C
TRedBlue
-270 °C to +400 °C
Description
The SNAP-AITM-4i module provides an input range of
±150 mV, ±75 mV, ±50 mV, ±25 mV, or Type B, C, D, E, G, J,
K, N, R, S, or T thermocouple.
The four channels on the module are isolated from each
other. Since these channels do not share any common
connections, grounded sensors and field devices may be
used with them.
SNAP-AITM-4i requires a SNAP PAC rack, a SNAP PAC brain
or R-series controller with firmware 9.1 or newer, and PAC
Project 9.1 or newer.
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
12
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Specifications
Part Number Description
SNAP-AIV-i Isolated two-channel analog voltage input
-10 VDC to +10 VDC or -5 VDC to +5 VDC
Input Range From -10 volts to +10 volts
From -5 volts to +5 volts
Maximum Over Range ± 10%
(= ± 27500 counts)
Resolution
0.4 mV when configured
-10 volts to +10 volts
0.2 mV when configured
-5 volts to +5 volts
Input Filtering -3 dB @ 64 Hz
Input Response Time
(% of span/ DV / Dt) 63.2% / 6.7 V / 10 mS
Data Freshness 11 ms for +/- 10 V
18 ms for +/- 5 V
DC Common Mode Rejec-
tion >-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
Coefficient 15 PPM/ °C
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to Chan-
nel
250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15) @ 200 mA
Input Resistance 1 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 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals UL, CE, FM, RoHS, DFARS
Warranty Lifetime
Isolated Voltage Input Module
-10 VDC to +10 VDC or
-5 VDC to +5 VDC
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-i module can be configured for either -10 VDC to
+10 VDC or -5 VDC to +5 VDC operation on each channel. The
SNAP-AIV-i provides two channels that are isolated from each
other. Since these channels do not share any common
connections, grounded sensors and field devices may be used
with them.
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
13
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
© 2006–2016 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.
Specifications
Part Number Description
SNAP-AIV2-i Isolated two-channel analog voltage input
-100 VDC to +100 VDC or -50 VDC to +50 VDC
Input Range From -100 volts to +100 volts
From -50 volts to +50 volts
Maximum Over Range ± 10%
(= ± 27500 counts)
Resolution
4.0 mV when configured -100 volts to
+100 volts
2.0 mV when configured -50 volts to
+50 volts
Input Filtering -3 dB @ 64 Hz
Input Response Time
(% of span/ DV / Dt) 63.2% / 6.7 V / 10 mS
Data Freshness 11 ms for +/- 100 V
18 ms for +/- 50 V
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%, 50 mV @ 100 VDC
25 mV @ 50 VDC
Gain Temperature Coeffi-
cient 30 PPM/ °C
Offset Temperature Coef-
ficient 15 PPM/ °C
Isolation: Optical 4000 V
Isolation: Transformer 1500 V
Isolation: Channel to
Channel
250 V continuous
(1500 V transient)
Power Requirements 5 VDC (±0.15) @ 200 mA
Input Resistance 1 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 5.26 in-lb (0.6 N-m)
Wire size range 22 to 14 AWG
Agency Approvals CE, RoHS, DFARS
Warranty Lifetime
Isolated Voltage Input Module
-100 VDC to +100 VDC or
-50 VDC to +50 VDC
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-AIV2-i module can be configured for either -100
VDC to +100 VDC or -50 VDC to +50 VDC operation on each
channel. The SNAP-AIV2-i provides two channels that are
isolated from each other. Since these channels do not share
any common connections, grounded sensors and field
devices may be used with them.
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
14
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Dimensional Drawing
All Modules Except SNAP-AITM-i, SNAP-AITM2-i, SNAP-AITM-4i, SNAP-AIMA-iSRC, and SNAP-AIMA-iSRC-FM
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
15
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
© 2006–2016 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.
Dimensional Drawing
SNAP-AITM-i and SNAP-AITM2-i Modules
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
16
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Dimensional Drawing
SNAP-AITM-4i Module
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
17
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
© 2006–2016 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.
Dimensional Drawing
SNAP-AIMA-iSRC and SNAP-AIMA-iSRC-FM Modules
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
18
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
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 Isolated Analog Input Modules
SNAP Isolated Analog Input Modules DATA SHEET
Form 1182-161011
PAGE
19
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
© 2006–2016 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.
Dimensional Drawing
SNAP Isolated Analog Input Modules
SNAP Isolated Analog Input Modules
PAGE
20
DATA SHEET
Form 1182-161011
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
© 2006–2016 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.
Dimensional Drawing
Height on Rack: SNAP-AITMi and SNAP-AITM2-i Modules
More About Opto 22
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-160810
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
© 2013–2016 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, easy-to-use, open
standards-based hardware and software products deployed
worldwide.
Industrial automation, process control, building automation,
industrial refrigeration, remote monitoring, data acquisition,
Industrial Internet of Things (IIoT), and information technology
applications all rely on Opto 22.
groov
Monitor and control your
equipment from anywhere
using your smartphone or
tablet with groov. Build your
own mobile app easily—just
drag, drop, and tag. No
programming or coding. Visit
groov.com
for more
information and your free trial.
SNAP PAC System
Developer- and IIoT-ready, the SNAP PAC System connects
physical assets to databases and applications using open
standards. 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
SNAP PAC programmable
automation controllers handle a
wide range of digital, analog, and
serial functions for data collection,
remote monitoring, process control,
and discrete and hybrid manufacturing.
For IIoT applications and easier integration with company
systems, standalone and rack-mounted SNAP PACs include a
built-in HTTP/HTTPS server and
RESTful API
(application
program interface). The REST API gives you secure, direct access
to I/O and variable data using your choice of programming
languages. No middleware, protocol converters, drivers, or
gateways needed.
Based on open Ethernet and Internet Protocol (IP) standards,
SNAP PACs make it easier to build or extend a system without the
expense and limitations of proprietary networks and protocols.
PAC Project Software Suite
Opto 22’s PAC Project Software Suite offers full-featured, cost-
effective control programming, HMI (human machine interface),
OPC server, and database connectivity software.
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
software-based controller, 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, local
PID loop control, watchdog, totalizing, and much more.
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.
Analog, digital, and serial modules are mixed on one mounting
rack and controlled by a SNAP PAC brain or rack-mounted PAC.
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 from engineers with 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 (toll-free in the U.S. and Canada) or 951-695-3000,
or visit our website at
www.opto22.com
.
www.opto22.com