Siemens SIMATIC S7-200 - Specifications for the EM 231, EM 232, and EM 235 Analog Input, Output, and Combination Modules

S7-200 Specifications
A-39
S7-200 Programmable Controller System Manual
A5E00066097-02
A.11 Specifications for the EM 231, EM 232, and EM 235 Analog
Input, Output, and Combination Modules
Table A-11 Specifications for EM 231, EM 232, EM 235 Analog Input, Output, and Combination Modules
Description
Order Number
EM 231 AI4 x 12 Bit
6ES7 231-0HC20-0XA0
EM 232 AQ2 x 12 Bit
6ES7 232-0HB20-0XA0
EM 235 AI4/AQ1 x 12 Bit
6ES7 235-0KD20-0XA0
Input Specifications Output Specifications Input Specifications Output Spec.
General Specifications
Dimensions (W x H x D)
Weight
Power loss (dissipation)
71.2 mm x 80 mm x 62 mm
183 g
2 W
46 mm x 80 mm x 62 mm
148 g
2 W
71.2 mm x 80 mm x 62 mm
186 g
2 W
Number of physical I/O 4 analog input points 2 analog output points 4 analog input points, 1 analog output point
Power Consumption
From +5 VDC (from I/O
bus)
From L+
L+ voltage range,
Class
2 or DC sensor supply
20 mA
60 mA
20.4 to 28.8
20 mA
70 mA (with both outputs at 20
mA)
20.4 to 28.8
30 mA
60 mA (with output at 20 mA)
20.4 to 28.8
LED indicator 24 VDC Power Supply
Good
ON = no fault,
OFF = no 24 VDC power
24 VDC Power Supply Good,
ON = no fault,
OFF = no 24 VDC power
24 VDC Power Supply Good,
ON = no fault,
OFF = no 24 VDC power
Analog Input Specifications
Data word format
Bipolar, full-scale range
Unipolar,full-scale
range
(see Figure A-21)
-32000 to +32000
0 to 32000
(see Figure A-21)
-32000 to +32000
0 to 32000
Input impedance ≥10 MΩ ≥ 10 MΩ
Input filter attenuation -3 db @ 3.1 Khz -3 db @ 3.1 Khz
Maximum input voltage 30 VDC 30 VDC
Maximum input current 32 mA 32 mA
Resolution 12 bit A/D converter 12 bit A/D converter
No. of Analog Input Points 4 4
Isolation (Field side to
logic circuit)
None None
Input type Differential Differential
Input ranges
Voltage (unipolar)
Voltage (bipolar)
Current
0 to 10 V, 0 to 5 V
±5 V, ± 2.5 V
0 to 20 mA
0 to 10 V, 0 to 5 V,
0 to 1 V, 0 to 500 mV,
0 to 100 mV, 0 to 50 mV
± 10 V, ± 5 V, ± 2.5 V,
± 1 V, ± 500 mV,
± 250 mV, ± 100 mV,
± 50 mV, ± 25 mV
0 to 20 mA
Input Resolution
Voltage (unipolar)
Voltage (bipolar)
Current
see Table A-5 see Table A-13
Analog to digital
conversion time
< 250 µs < 250 µs
Analog input step
response
1.5 ms to 95% 1.5 ms to 95%
Common mode rejection 40 dB, DC to 60 Hz 40 dB, DC to 60 Hz
Common mode voltage Signal voltage plus
common mode voltage
(must be ≤ 12 V)
Signal voltage plus
common mode voltage
(must be ≤ 12 V)