Specifications are subject to change without notice SPT-90DS0303 1
Class 0.5 (current/voltage)
16-bit µP-based modular smart power transducer
Measurements of: W, Wavg, VA, VAr, PF, Wh, VAh, VArh,
Amax (among the phases), VL-Lavg, VL1-N, VL2-N,
VL3-N, Hz L1.
TRMS measurement of distorted waves (voltage/current)
All configuration functions selectable by an optional
removable key-pad or programming software SptSoft
Password protection of programming parameters
Optional independent alarm setpoint
Optional second analogue output (20 mADC/±20mADC
±10 mADC/±5 mADC/10 VDC/±5VDC/±1VDC)
Optional serial RS 422/485 or RS232 output
MODBUS, JBUS protocol.
Product Description
Model
Range code
System
Power supply
Auxiliary output
1st output/input
2nd output
Options
Ordering Key SPT-90AV51HX A1XXX
16-bit µP-based modular
smart power transducer with
an optional removable con-
figuration key-pad or pro-
gramming software. The
housing is for DIN-rail mount-
ing and ensures a degree of
protection (front) of IP 20.
Energy Management
Modular Smart Power Transducer
Type SPT-90
Type Selection
System
1: One phase, three-
phase system
(3 or 4 wires, balan-
ced load)
3: Three phase system
(3 or 4 wires, unba-
lanced load)
Range code
AV1: 100/3/100 VAC-1 AAC
(max. 130/3 (L-N)/
130 V (L-L) - 1.2 A) 1)
AV3: 100/3/100 VAC-5 AAC
(max. 130/3 (L-N)/
130 V (L-L) - 6 A) 1)
AV4: 250/433 VAC - 1 AAC
(max. 300 V (L-N)/
520 V (L-L) - 1.2 A) 1)
AV5: 250/433 VAC - 5 AAC
(max. 300 V (L-N)/
520 V (L-L) - 6 A)
(standard)
AV7: 400/690 VAC - 5 AAC
(max. 480 V (L-N)/
830 V (L-L) - 6 A) 1)
Power supply
L: 18 to 60 VAC/DC
H: 90 to 260VAC/DC
Auxiliary output
X: None (standard)
D: Single Alarm setpoint,
relay 1) (AO1058)
P: Single Pulse, open
collector, DC type 1)
(AO1059)
B Dual pulse output,the
second one is the
copy of the first one,
like “P” 1) (AO1036)
T Dual alarm output,
the second one is the
copy of the first one,
like “D” 1) (AO1035)
1st output/input
D1(*): 3 digital inputs
(managed only by
means of the serial
communication)
1)
A1:
Single analogue output,
20mADC (standard)
A2:
Single analogue output,
±5mADC 1)
A3:
Single analogue output,
±10mADC 1)
A4:
Single analogue output,
±20mADC 1)
B1:
Dual analogue output,
20mADC (standard)
B2: Dual analogue output,
±5mADC 1)
B3: Dual analogue output,
±10mADC 1)
B4: Dual analogue output,
±20mADC 1)
V1: Single analogue output,
10VDC (standard)
V2: Single analogue output,
±1VDC 1)
V3: Single analogue output,
±5VDC 1)
V4: Single analogue output,
±10VDC 1)
W1: Dual analogue output,
10VDC (standard)
W2: Dual analogue output,
±1VDC 1)
W3: Dual analogue output,
±5VDC 1)
W4: Dual analogue output,
±10VDC 1)
2nd output
XX: None (standard)
S1: Serial port, RS 485
multidrop bidirec-
tional 1)
A1: Analogue output,
20 mADC (standard)
A2: Analogue output,
±5 mA 1)
A3: Analogue output,
±10 mA 1)
A4: Analogue output,
±20 mA
V1: Analogue output,
10 VDC 1)
V2: Analogue output,
±1 VDC 1)
V3: Analogue output,
±5VDC 1)
V4: Analogue output,
±10VDC 1)
1) On request
Options
X: None
K:
Programming key-pad
S: RS232 port 2)
2) The programming software has the part number: Sptsoft
(*) The 3 digital inputs can’t work together with one or more analogue outputs in the same instrument.
2Specifications are subject to change without notice SPT-90DS0303
SPT-90
Output Specifications
Number of inputs
Current 2 (system code: 1)
6 (system code: 3)
Voltage 2 (system code: 1)
4 (system code: 3)
Digital 4, for 3 free of voltage con-
tacts (inputs managed only
by the serial communica-
tion)
Reading voltage/current:
17.5 to 25VDC/<8mA
Accuracy (basic unit)
Voltage/current ±0.5% f.s. includes also:
frequency, power supply
and output load influences
Frequency ±0.5% f.s. (45 to 500 Hz)
Active power
(@ 25°C ± 5°C, R.H. 60%) ±0.5% f.s. (PF 0.7 L/C,
0.6 to 1 In, 0.9 to 1.1 Un)
±1% f.s. (PF 0.3 L/C,
0.2 to 1.2 In, 0.7 to 1.2 Un)
Reactive power
(@ 25°C ± 5°C, R.H. 60%) ±0.5% f.s. (PF 0.7 L/C,
0.6 to 1 In, 0.9 to 1.1 Un)
±1% f.s. (PF 0.3 L/C,
0.2 to 1.2 In, 0.7 to 1.2 Un)
Apparent power
(@ 25°C ± 5°C, R.H. 60%) ±0.5% f.s.,
(0.6 to 1 In, 0.9 to 1.1 Un)
±1% f.s.,
(0.2 to 1.2 In, 0.7 to 1.2 Un)
Additional errors
Humidity
0.3% f.s., 60% to 90% R.H.
Input frequency 0.4% f.s., 62 to 400 Hz
Magnetic field 0.5% f.s. @ 400 A/m
Ripple
1% according to IEC 60688-1
and EN60688-1
Sampling rate 1900 Hz
Display (programming unit) 7-segment, LED, h 9 mm
Max. and min. indication Max. 999, min. -999
Measurements W, Wavg, VA, VAr, PF, Wh,
VAh, VArh, Amax (among the
phases), VL-L avg, VL1-N,
VL2-N, VL3-N, Hz L1.
TRMS measurement of a dis-
torted wave voltage/current
Coupling type : Direct
Crest factor: 3
Ranges (impedances)
AV1 (Un/In): 100 V /3/100 V (>250k) -
1 AAC (0.3 VA)
AV3 (Un/In): 100 V /3/100 V (>250k) -
5 AAC (0.3 VA)
AV4 (Un/In): 250 V/433 V (>450k) -
1 AAC (0.3 VA)
AV5 (Un/In): 250 V/433 V (>450k) -
5 AAC (0.3 VA)
AV7 (Un/In): 400 V/690 V (>1M) -
5 AAC (0.3 VA)
Frequency range 48 to 62 Hz
Over-load protection
Continuous: voltage/current 1.2 Un/In
For 1 s
Voltage: 2 Un
Current: 20 In
Programming keypad Removable type
(on request) 3 keys: ”S” for enter pro-
gramming phase and
password confirmation,
”UP” and “DOWN” for
value programming/function
selection
Programming software SptSoft Programming soft
ware (on request) for
windows 95/98 combined
with an RS232 serial
communication module.
Input Specifications
±20mA output 550
±10 mA output 1100
±5 mA output 2200
10 V output 10 k
±10 V output 10 k
± 5 V output 10 k
± 1 V output 10 k
Insulation By means of optocouplers,
4000 Vrms output to
measuring input
4000 Vrms output to
supply input
Serial port (on request)
Type RS422/RS485, multidrop
bidirectional (static and
dynamic variables)
Connections 4-wire, termination
directly on the module
Addresses 255, selectable by key-pad
Protocol MODBUS/JBUS
Analogue outputs
Number of outputs 1 (standard) + 1 (on request)
Accuracy ±0.2% f.s. (@ 25°C±5°C,
R.H. 60%)
Range 0 to 20 mADC,
±5mADC, ±10mADC,
±20mADC, 10VDC, ±1VDC,
±5VDC, ±10VDC.
Scaling factor Programmable within the
whole range of retransmis-
sion; it allows the retrans-
mission management of all
values from: 0 to 20 mADC,
±5mADC, ±10mADC,
±20mADC, 0 to10VDC,
±1VDC, ±5VDC, ±10VDC.
Response time 250 ms typical
(filter excluded)
Temperature drift 300 ppm/°C
Load: 20 mA output 600
Specifications are subject to change without notice SPT-90DS0303 3
SPT-90
Password Numeric code of max. 3 di-
gits; 2 protection levels of
the programming data
1st level Password “0”, no protection
2nd level Password from 1 to 499, all
data are protected
Measurement selection System’s active power (W),
system’s apparent power
(VA), system’s reactive
power (VAr), average active
power (Wavg), integration
time programmable from 1
to 30 minutes, system’s
power factor (cosϕ), maxi-
mum current (A max), avera-
ge phase-phase voltage,
phase-neutral voltage-
phase 1, phase-neutral vol-
tage-phase 2, phase-neutral
voltage-phase 3, frequency-
phase 1.
System’s (+) active energy,
system’s apparent energy,
Measurement selection (cont.) system’s reactive energy,
system’s (+/-) active energy
Transformer ratio For CT up to 5000 A,
For VT up to 100 kV (1MV)
Scaling factor
Operating mode Electrical scale: compression/
expansion of the input scale
to be connected to 1 or 2 ana-
logue outputs and to the alarm
output.
Electrical range Programmable within the
whole measuring range
Filter
Filter operating range 0 to 99.9% of the
input electrical scale
Filtering coefficient 1 to 255
Filter action Both analogue and serial
outputs (fundamental vari-
ables: V, A, W and their
derived ones)
Software Functions
Serial port (cont.)
Data (bidirectional)
Dynamic (reading only) System variables:
P, P AVG, S, Q, PF, VL-L, f,
energy and status of digital
inputs, setpoint output and
status of the energy over-
flow bit,
Single phase variables:
PL1, SL1, QL1, PFL1, VL1-N, AL1,
PL2, SL2, QL2, PFL2, VL2-N, AL2,
PL3, SL3, QL3, PFL3, VL3-N, AL3
Static (writing only) All programming data, reset
of energy, reset of energy
overflow bit, activation of
static output.
Stored energy (EEPROM)
250,000.000 kWh
Data format 1-start bit, 8-data bit, no
parity/even parity, 1 stop bit
Baud-rate 1200, 2400, 4800 and 9600
selectable bauds
Insulation By means of optocouplers,
4000 Vrms output to
measuring inputs
4000 Vrms output to
supply input
Temperature drift 200 ppm/ºC
RS 232 port (on request) bidirectional (static and
dynamic variables)
3 wires, max. distance 15m
Data format 1-start bit, 8-data bit,
no parity, 1 stop bit
Baud-rate 9600 bauds
Protocol MODBUS (JBUS)
Other data as for RS422/485
Pulse output (on request)
Number of outputs 1, independent
Type From 1 to 999 programmable
pulses for kWh, KVAh,
KVArh, MWh, MVAh,
MVArh,
open collector (NPN transistor)
VON 1.2 VDC/ max. 100mA
VOFF 30 VDC max.
according to DIN43864
Pulse duration 20 ms (ON), 20 ms (OFF)
Insulation By means of optocouplers,
4000 Vrms output to
measuring input,
4000 Vrms output to
supply input.
Alarms (on request)
Number of setpoints 1, independent
Alarm type Up alarm, down alarm
Setpoint adjustment 0 to 100% of the electrical
scale
Hysteresis 0 to 100% of the electrical
scale
On-time delay 0 to 255 s
Relay status Normally de-energized
Output type Relay, SPDT
AC 1 - 8A @ 250VAC
DC 12 - 5A @ 24VDC
AC 15 - 2.5 @ 250VAC
DC 13 - 2.5 @ 24VDC
Response time typ. 250 ms, filter excluded,
setpoint on-time delay: ”0”
Insulation 4000 Vrms output to
measuring input,
4000 Vrms output to
supply input
Output Specifications (cont.)
4Specifications are subject to change without notice SPT-90DS0303
SPT-90
Function Description
Figure A
The sign of measured quant-
ity and output quantity re-
mains the same. The output
quantity is proportional to the
measured quantity.
Input and output scaling capability
Working of the analogue outputs (y) versus input variables (x)
Figure B
The sign of measured quant-
ity and output quantity
changes simultaneously. The
output quantity is proportion-
al to the measured quantity.
Figure C
The sign of measured quant-
ity and output quantity re-
mains the same. On the
range X0...X1, the output
quantity is zero. The range
X1...X2 is delineated on the
entire output range Y0 =
Y1...Y2 and thus presented in
strongly expanded form.
Figure F
The sign of the measured
quantity remains the same,
that of the output quantity
changes as the measured
quantity leaves range X0...X1
and passes to range X1...X2
and vice versa.
Figure E
The sign of the measured
quantity changes but that of
the output quantity remains
the same. The output quant-
ity steadily increases from
value X1 to value X2 of the
measured quantity.
Figure D
The sign of measured quant-
ity and output quantity re-
mains the same. With the
measured quantity being
zero, the output quantity
already has the value
Y1 = 0.2 Y2.
Live zero output.
0 50 A 100 A
0 10 mA 20 mA
-100 kW 0 100 kW
-1 kW 0 1 kW
80 V 100 V 120 V
0 5 mA 10 mA
0 50 A 100 A
4 12 mA 20 mA
-100 kW 0 100 kW
0 10 mA 20 mA
0 50 A 100 A
-1 V 0 1 V
Operating temperature 0 to +5C (32 to 122°F)
(R.H. < 90% non-condensing)
Storage temperature -10 to +60°C (14 to 140°F)
(R.H. < 90% non-condensing)
Insulation reference voltage 300 Vrms to ground
Insulation 4000 Vrms between all inputs/
outputs to ground
Dielectric strength 4000 Vrms for 1 minute
Noise rejection
CMRR 100 dB, 48 to 62 Hz
EMC EN 50081-2, EN 50082-2
Other standards
Safety requirements: IEC 61010-1, EN 61010-1
Product requirements: IEC 60688-1, EN 60688-1
Pulse output: DIN 43864
Approvals CE
UL, CSA
Connector Screw-type,
max. 2.5 mm2wires x 2
Housing
Dimensions 90 x 90 x 140 mm
Material ABS,
self-extinguishing: UL 94 V-0
Degree of protection IP20
Weight Approx. 550 g
(packing included)
General Specifications
AC voltage
90 to 260 VAC/DC (standard),
50/60 Hz
18 to 60VAC/DC, 50/60Hz
(on request),
Power consumption 30 VA / 20W (90 to 260V)
20VA / 20W (18 to 60V)
Supply Specifications
Specifications are subject to change without notice SPT-90DS0303 5
SPT-90
Slot A B C D E
Basic unit Out 1 Out 2 Out 3 Out 4 PU
Single analogue output (2)
Dual analogue output (2)
RS485 port (1)
Single relay output (alarm)
Single open coll. output (pulse)
Dual relay output (alarm)
Dual open coll. output (pulse)
3 digital inputs (2) (*)
RS232 port (1)
Programming unit
Type N. of channels Ordering code Note
SPT-90 base + AV1.1 input AA1000
SPT-90 base + AV3.1 input AA1001
SPT-90 base + AV4.1 input AA1002
SPT-90 base + AV5.1 input AA1003
SPT-90 base + AV7.1 input AA1004
SPT-90 base + AV1.3 input AA1006
SPT-90 base + AV3.3 input AA1007
SPT-90 base + AV4.3 input AA1008
SPT-90 base + AV5.3 input AA1009
SPT-90 base + AV7.3 input AA1010
18-60VAC/DC power supply AP1021
90-260VAC/DC power supply AP1020
Programming unit AR1017 The same unit can be used in several SPT’s
20mADC analogue output 1 AO1050
10VDC analogue output 1 AO1051
±5mADC analogue output 1 AO1052
±10mADC analogue output 1 AO1053
±20mADC analogue output 1 AO1054
±1VDC analogue output 1 AO1055
±5VDC analogue output 1 AO1056
±10VDC analogue output 1 AO1057
20mADC analogue output 2 AO1026 SPT can be equipped also with 2 dual analogue
10VDC analogue output 2 AO1027 outputs, in this case the third or fourth output can
±5mADC analogue output 2 AO1028 be used as a redundant output of the second one
±10mADC analogue output 2 AO1029
±20mADC analogue output 2 AO1030
±1VDC analogue output 2 AO1031
±5VDC analogue output 2 AO1032
±10VDC analogue output 2 AO1033
RS485 port 1 AR1034
Relay output 1 AO1058
Relay output 2 AO1035
The second output can be used as redundant output
Open collector output 1 AO1059
Open collector output 2 AO1036
The second output can be used as redundant output
Digital inputs 3 AQ1038
RS232 port + RTC 1 AR1039 The RS232 module works as alternative of the
RS485 module. The RTC (real time clock) function
is not available in the SPT
The available modules
The possible combinations
Notes:
PU is the programming unit
(1) The RS232 module works as alternative
of the RS485 module.
(2) (*) Digital inputs and analogue outputs can’t
work together in the same instrument.
6Specifications are subject to change without notice SPT-90DS0303
SPT-90
Mode of Operation
Accuracy class of the meter
as a relation of PI/PNand cos ϕ (power factor)
Trends of the ”E” error depending on the SRscale ratio
* V = 0.9 to 1.1, Un,
I = 0.6 to 1 In,
f = 48 to 62 Hz
** V = 0.7 to 1.2 Un,
I = 0.2 to 1.2 In,
f = 48 to 100 Hz
80º 70º 60º 50º 40º 30º 20º 10º
0.34º 0.64º 0.86º 0.98º
0.17º 0.5º 0.76º 0.94º
E %
SR
COS ϕ
PI/PN
Input Star Delta Current
voltage voltage
AV1 Un: 100 V/3 Un: 100 V In: 1 A
AV3 Un: 100 V/3 Un: 100 V In: 5 A
AV4 Un: 250 V Un: 430 V In: 1 A
AV5 Un: 250 V Un: 430 V In: 5 A
PI: (installation power)
One phase system:
PI= UI· II· cos ϕ
Three phase, 3-wire system:
PI= 3 · UI· II· cos ϕ
Three phase, 4-wire system:
PI= 3 · UI· II· cos ϕ
where:
UI=the real star voltage of
the electrical system being
measured.
II=the maximum phase cur-
rent of the electrical system
being measured.
Cos ϕ= the average cos ϕof
the electrical system being
measured.
Pn: (rated power of transducer)
One phase system:
Pn= Un· In· VT(ratio) · CT(ratio)
Three phase, 3-wire system:
Pn= 3 · Un· In· VT(ratio) · CT(ratio)
Three phase, 4-wire system:
Pn= 3 · Un· In· VT(ratio) · CT(ratio)
where:
Un=the rated input voltage of
SPT-90 depending on the
model, see table above.
In=the rated input current of
SPT-90 depending on the
model, see table above.
VT (ratio) = the value of the
voltage transformer ratio.
CT (ratio) = the value of the
current transformer ratio.
Example 1:
Model AV3.3 (3-wire system).
UI=6 kV (delta voltage)
II= 265 A (single phase cur-
rent)
Cos ϕ= 0.85 (system power
factor)
Un= 100 V
In= 5 A
VT (ratio) = 6 kV = 60
100
CT (ratio) = 300 = 60
5
PI= 3 · UI· II· cos ϕ
= 3 · 6000 · 265 · 0.85
= 2.33 MW
Pn=3 · Un· In· VT(ratio) · CT(ratio)
= 3 · 100 · 5 · 60 · 60
= 3.12 MW
PI= 2.33 = 0.75
Pn3.12
Example 2:
Model AV3.3 (4-wire system).
UI=6 kV / 3
II= 265 A
Cos ϕ= 0.85
Un= 100 V / 3
In= 5 A
VT (ratio) = 6 kV / 3= 60
100 / 3
CT (ratio) = 300 A= 60
5 A
PI= 3 · UI· II· cos ϕ
= 3 · 6000 / 3 · 265 · 0.85
= 2.33 MW
Pn= 3 · Un· In· VT(ratio) · CT(ratio)
= 3 · 100 / 3 · 5 · 60 · 60
= 3.12 MW
PI= 2.33 = 0.75
Pn3.12
In both examples the accura-
cy of the measurement is
0.5% f.s. when considering
the changing of the measur-
ed voltage from 0.9 Un to 1.1
Un and the measured cur-
rent from 0.6 In to 1 In with a
cos ϕof 0.85. The accuracy
of the output is connected to
the accuracy of the measure-
ment plus the scale ratio of
both input (Hi.E - Lo.E) and
output (Hi.A - Lo.A) as shown
in the graph above (E% ver-
sus SR).
Regarding SR:
SR= AFS · (Hi.A - Lo.A) 1.25
100 · (Hi.E - Lo.E)
AFS = automatic electrical full
scale calculated value.
SR = scale ratio.
There is not any additional
error on the output signal if
SR1.25.
Example 3:
AFS = 3.30 MW
Lo.E = 0 MW
Hi.E = 3.30 MW
Lo.A = 20%
Hi.A =99.9%
SR= 3.30 (99.9-20) = 0.8
100 (3.30-0)
0.8 1.25 no additonal errors
Example 4:
AFS =3.30 MW
Lo.E = 1.00 MW
Hi.E = 3.30 MW
Lo.A = 20%
Hi.A = 99.9%
SR= 3.30 (99.9-20) = 1.32
100 (3-1)
1.32 1.25 means that there
is an additional error of 0.2%
f.s. according to the graph at
the previous page.
Specifications are subject to change without notice SPT-90DS0303 7
SPT-90
Wiring Diagrams
Single phase input connections
L1
N
L1 NL3
L2 U
13 5
24 6
I
L1 L2 L3
8 7 10
9
L1
N
L1 NL3
L2 U
13 5
24 6
I
L1 L2 L3
8 7 10
9
CT connectionDirect connection CT and VT connection
Three-phase, 3-wire input connections - Balanced loads
CT connection (3-wire system)Direct connection (3-wire system) CT and VT connection (3-wire system)
Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5 Fig. 6
Waveform of the signals that can be measured
Figure G
Sine wave, undistorted
Fundamental content 100%
Harmonic content 0%
Arms = 1.1107 | A |
Figure H
Sine wave, indented
Fundamental content 10...100%
Harmonic content 0...90%
Frequency spectrum 3rd to 16th harmonic
Required result: additional error < 1%
Figure I
Sine wave, distorted
Fundamental content 70...90%
Harmonic content 10...30%
Frequency spectrum 3rd to 15th harmonic
Required result: additional error < 0.5%
Mode of Operation (cont.)
L1
N
L1 NL3
L2 U
13 5
24 6
I
L1 L2 L3
8 7 10
9
8Specifications are subject to change without notice SPT-90DS0303
SPT-90
CT connection (4-wire system)Direct connection (4-wire system) CT and VT connection (4-wire system)
Wiring Diagrams (cont.)
Fig. 7 Fig. 8 Fig. 9
Three-phase, 3-wire input connections - Balanced loads
Three-phase three-wire input connections - Unbalanced load
CT connection (3-wire system) ARON
CT and VT connection (3-wire system) ARON
Three-phase four-wire input connections - Unbalanced load
CT and VT connection (3-wire system) CT connection (4-wire system) CT and VT connection (4-wire system)
Fig. 10 Fig. 11
Fig. 13 Fig. 14 Fig. 15
CT and VT connection (3-wire system)
Fig. 12
Three-phase three-wire input connections
Unbalanced load
Specifications are subject to change without notice SPT-90DS0303 9
SPT-90
Dimensions
Front Panel Description
“S”
- Selection key to select programming function (transducer
configuration) and alarm detection.
” ” and ” ”
- Up and down keys for increasing or decreasing program-
ming values.
- Selecting programming functions and transducer
configuration together with the ”S” key.
2. Display
3 -digit (maximum read-out 999).
Alphanumeric indication by means of 7-segment display
for:
- Displaying only the configuration parameters
1. Key-pad
Set-up and programming procedures are easily controlled
by the 3 pushbuttons.
21
21
10 Specifications are subject to change without notice SPT-90DS0303
SPT-90
Terminal boards
AP1021
18-60VAC/DC power supply
AP1020
90-260 VAC/DC power supply
AO1050 (20mADC)
AO1051 (10VDC)
AO1052 (±5mADC)
AO1053 (±10mADC)
AO1054 (±20mADC)
AO1055 (±1VDC)
AO1056 (±5VDC)
AO1057 (±10VDC)
AO1026 (20mADC)
AO1027 (10VDC)
AO1028 (±5mADC)
AO1029 (±10mADC)
AO1030 (±20mADC)
AO1031 (±1VDC)
AO1032 (±5VDC)
AO1033 (±10VDC)
AR1034
RS485 port
AO1035
Dual relay port
AO1059
Single open collector
output
AO1036
Dual open collector
output
AO1058
Single relay output
AQ1038
3 Digital inputs
AR1039
RS232 port
AR1017
Programming Unit
Single analogue output modules Dual analogue output modules
Digital output modules
Other input/output modules
Power supply modules