| SIMATIC S7-200, Analog input EM 231, only for S7-22X CPU, 8 AI, 0-10V DC, max 2 AI 0..20 mA 12/11-bit converter |
| Input current |
| from load voltage L+ (without load), max. | 60 mA |
| from backplane bus 5 V DC, max. | 20 mA |
| Power loss |
| Power loss, typ. | 2 W |
| Analog inputs |
| Number of analog inputs | 8; Difference |
| permissible input voltage for voltage input (destruction limit), max. | 30 V |
| permissible input current for current input (destruction limit), max. | 40 mA |
| Input ranges |
| Voltage | Yes |
| Current | Yes; for channels 6 and 7 only |
| Thermocouple | No |
| Resistance thermometer | No |
| Resistance | No |
| Input ranges (rated values), voltages |
| 0 to +5 V | Yes |
| Input resistance (0 to 5 V) | 10 MΩ |
| 0 to +10 V | Yes |
| Input resistance (0 to 10 V) | 10 MΩ |
| -2.5 V to +2.5 V | Yes |
| Input resistance (-2.5 V to +2.5 V) | 10 MΩ |
| -5 V to +5 V | Yes |
| Input resistance (-5 V to +5 V) | 10 MΩ |
| -80 mV to +80 mV | No |
| Input ranges (rated values), currents |
| 0 to 20 mA | Yes; for channels 6 and 7 only |
| Input resistance (0 to 20 mA) | 10 MΩ |
| Input ranges (rated values), thermocouples |
| Type E | No |
| Type J | No |
| Type K | No |
| Type N | No |
| Type R | No |
| Type S | No |
| Type T | No |
| Input ranges (rated values), resistance thermometer |
| Cu 10 | No |
| Ni 10 | No |
| Ni 1000 | No |
| Ni 120 | No |
| Pt 100 | No |
| Pt 1000 | No |
| Pt 10000 | No |
| Pt 200 | No |
| Pt 500 | No |
| Input ranges (rated values), resistors |
| 0 to 150 ohms | No |
| 0 to 300 ohms | No |
| 0 to 600 ohms | No |
| Thermocouple (TC) |
| Temperature compensation |
| — parameterizable | No |
| Cable length |
| shielded, max. | 100 m; to the sensor |
| Analog value generation for the inputs |
| Integration and conversion time/resolution per channel |
| Resolution with overrange (bit including sign), max. | 12 bit |
| Interference voltage suppression for interference frequency f1 in Hz | 40 dB, DC up to 60 V for interference frequency |
| Conversion time (per channel) | 250 µs |
| Displayable conversion value range |
| bipolar signals | -32 000 to +32 000 |
| unipolar signals | 0 to 32 000 |
| Errors/accuracies |
| Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency |
| Common mode voltage, max. | 12 V |
| Interrupts/diagnostics/status information |
| Diagnostics indication LED |
| external fault EXTF (red) | Yes |
| Potential separation |
| Potential separation analog inputs |
| Potential separation analog inputs | No |
| Connection method |
| Plug-in I/O terminals | No |
| Dimensions |
| Width | 71.2 mm |
| Height | 80 mm |
| Depth | 62 mm |
| Weights |
| Weight, approx. | 190 g |
| last modified: | 03/13/2019 |
