EM 231 CN Siemens 6ES7 231 7PB22 0XA8
EM 231 CN Siemens 6ES7 231 7PB22 0XA8 , only for S7-22X CPU, 2 AI, Pt100/200/500/1000/10000, NI100/120/1000, CU10, Resistance 150/300/600 ohm, 15 bit+sign this S7-200 CN product only has CE approval.
Analog Expansion Modules Input Specifications
General | EM 231 CN Siemens 6ES7 231 7PB22 0XA8 | |
Data word format Bipolar, full-scale range Unipolar, full-scale range |
(See Figure A-14) –32000 to +32000 0 to 32000 |
|
DC Input impedance | ≥10 MΩ voltage input 250 Ω current input |
|
Input filter attenuation | –3 db at 3.1 Khz | |
Maximum input voltage | 30 VDC | |
Maximum input current | 32 mA | |
Resolution Bipolar Unipolar |
11 bits plus 1 sign bit 12 bits |
|
Isolation (field to logic) | None | |
Input type | Differential | |
Input ranges Voltage Current |
Selectable, see Table A-20 for available ranges 0 to 20 mA |
|
Input resolution | See Table A-20 | |
Analog to digital conversion time | < 250 µs | |
Analog input step response | 1.5 ms to 95% | |
Common mode rejection | 40 dB, DC to 60 Hz | |
Common mode voltage | Signal voltage plus common mode voltage must be ≤ ±12 V |
|
24 VDC supply voltage range | 20.4 to 28.8 VDC (Class 2, Limited Power, or sensor power from PLC) |
Configuration for EM 231 CN Siemens 6ES7 231 7PB22 0XA8
Table A-20 shows how to configure the EM 231 module using the configuration DIP switches.
Switches 1, 2, and 3 select the analog input range. All inputs are set to the same analog input
range. In this table, ON is closed, and OFF is open. The switch settings are read only when the
power is turned on.
Table A-20 EM 231 Configuration Switch Table to Select Analog Input Range
Unipolar | Full Scale Input -Scale Input |
Resolution | ||
SW1 | SW2 | SW3 | ||
OFF | ON | 0 to 10 V | 2.5 mV | ON |
ON | OFF | 0 to 5 V | 1.25 mV | |
0 to 20 mA | 5 µA | |||
Bipolar | Full Scale Input -Scale Input |
Resolution | ||
SW1 | SW2 | SW3 | ||
OFF | OFF | ON | ±5 V | 2.5 mV |
ON | OFF | ± 2.5 V | 1.25 mV |