Technical specifications and configuration data for Siemens S7-200 analog expansion modules EM 231, EM 232, and EM 235.
This document provides technical specifications for the Siemens S7-200 Programmable Controller System, specifically focusing on analog expansion modules. It details the order numbers, dimensions, and electrical requirements for the EM 231 (Analog Input), EM 232 (Analog Output), and EM 235 (Analog Combination) modules.
| EM 231 Dimensions | 71.2 x 80 x 62 mm |
|---|---|
| EM 232 Dimensions | 46 x 80 x 62 mm |
| EM 235 Dimensions | 71.2 x 80 x 62 mm |
| EM 231 Input Filter Attenuation | -3 db at 3.1 Khz |
| EM 231 Common Mode Rejection | 40 dB, DCto 60 Hz |
| EM 232 Output Accuracy (Typical) | ±0.5% of full-scale |
| EM 232 Minimum Drive Impedance | 5000 Ω |
| EM 232 Maximum Drive Impedance | 500Ω |
| EM 232 Supply Voltage Range | 20.4 to 28.8 VDC |
| EM 235 Input Resolution (Unipolar) | 12 bits |
| EM 235 Input Resolution (Bipolar) | 11 bits plus sign bit |
The order numbers are 6ES7 231--0HC22--0XA0 for EM 231, 6ES7 232--0HB22--0XA0 for EM 232, and 6ES7 235--0KD22--0XA0 for EM 235.
No, the EM 231 and EM 235 expansion modules are not recommended for use with thermocouples.
The maximum input voltage for the EM 231 is 30 VDC.
You should allow the module to stabilize for 15 minutes before adjusting the potentiometers.