6ES7231-7PB22-0XA0 EM231 Analog Input module
Description
6ES7231-7PB22-0XA0 EM231 Analog Input module is an Analog RTD/Resistance Input Module of SIMATIC S7-200 series PLC, The Analog input EM 231 is used to only for S7-22X CPU, this module has 2 AI (Analog Input), Pt100/200/500/1000/10000, NI100/120/1000, CU10, Resistance 150/300/600 ohm, 15 bit +sign.
Specification of 6ES7231-7PB22-0XA0 EM231 Analog Input module
| Brand | SIEMENS |
| Model | 6ES7231-7PB22-0XA0 |
| Product series | EM231 Module |
| Input current | |
| from load voltage L+ (without load), max. | 60 mA |
| from backplane bus 5 V DC, max. | 87 mA |
| Power loss | |
| Power loss, typ. | 1.8 W; Sensor: 1 mW |
| Analog inputs | |
| Number of analog inputs | 2 |
| permissible input voltage for voltage input (destruction limit), | 30 V; 30 V DC (probe), 5 V DC (source) |
| max. | |
| Loop resistance cable | 20 Ω; max. 2.7 Ohm for Cu |
| Updating time (all channels) | 405 ms; 700 ms with Pt10000 |
| Input ranges | |
| ● Voltage | No |
| ● Current | No |
| ● Thermocouple | No |
| ● Resistance thermometer | Yes |
| ● Resistance | Yes |
| Input ranges (rated values), resistance thermometer | |
| ● Cu 10 | Yes |
| — Input resistance (Cu 10) | 10 MΩ |
| ● Ni 10 | Yes |
| — Input resistance (Ni 10) | 10 MΩ |
| ● Ni 1000 | Yes |
| — Input resistance (Ni 1000) | 10 MΩ |
| ● Ni 120 | Yes |
| — Input resistance (Ni 120) | 10 MΩ |
| ● Pt 100 | Yes |
| — Input resistance (Pt 100) | 10 MΩ |
| ● Pt 1000 | Yes |
| — Input resistance (Pt 1000) | 10 MΩ |
| ● Pt 10000 | Yes |
| — Input resistance (Pt 10000) | 10 MΩ |
| ● Pt 200 | Yes |
| — Input resistance (Pt 200) | 10 MΩ |
| ● Pt 500 | Yes |
| — Input resistance (Pt 500) | 10 MΩ |
| Input ranges (rated values), resistors | |
| ● 0 to 150 ohms | Yes 10 MΩ |
| — Input resistance (0 to 150 ohms) | |
| ● 0 to 300 ohms | Yes 10 MΩ |
| — Input resistance (0 to 300 ohms) | Yes |
| ● 0 to 600 ohms | 10 MΩ |
| — Input resistance (0 to 600 ohms) | |
| Cable length | |
| ● shielded, max. | 100 m; to the sensor |
| Analog value generation for the inputs | |
| Measurement principle | Sigma Delta |
| Integration and conversion time/resolution per channel | |
| ● Resolution with overrange (bit including sign), max. | 16 bit; Temperature 0.1 °C / 0.1 °F |
| ● Interference voltage suppression for interference frequency f1 in Hz | 85 dB at 50 / 60 / 400 Hz |
| Displayable conversion value range | |
| ● bipolar signals | -27 648 to +27 648 |
| Errors/accuracies | |
| Repeat accuracy in steady state at 25 °C (relative to input range), (+/-) | 0.05% |
| Operational error limit in overall temperature range | |
| ● Voltage, relative to input range, (+/-) | 0.10% |
| Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency | |
| ● common mode voltage / with interference voltage suppression / maximum | 0 V |
| ● Common mode interference, min. | |
| 120 dB; At 120 V AC | |
| Interrupts/diagnostics/status information | |
| Diagnostics indication LED | |
| ● external fault EXTF (red) | Yes |
| ● Group error SF (red) | Yes |
| Potential separation | |
| Potential separation analog inputs | |
| ● Potential separation analog inputs | Yes |
| Permissible potential difference | |
| Between the inputs and MANA (UCM) | 500 V AC |
| between M internally and the inputs | 500 V AC |
| connection method | |
| Plug-in I/O terminals | No |
| Dimensions | |
| Width | 71.2 mm |
| Height | 80 mm |
| Depth | 62 mm |
| Weights | |
| Weight, approx. | 210 g |
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