Siemens Signal Board SB 1231, 1 AI - 6ES7231-4HA30-0XB0
SIMATIC S7-1200, Analog input, SB 1231, 1 AI, +/-10 V DC (12 bit resol.) or 0-20 mA...
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SIMATIC S7-1200, Analog input, SB 1231, 1 AI, +/-10 V DC (12 bit resol.) or 0-20 mA
| General information | |
| Product type designation | SB 1231, AI 1x12 bit |
| Supply voltage | |
| Rated value (DC) | 24 V |
| Input current | |
| from backplane bus 5 V DC, typ. | 55 mA |
| Power loss | |
| Power loss, typ. | 0.4 W |
| Analog inputs | |
| Number of analog inputs | 1; Current or voltage differential inputs |
| permissible input voltage for current input (destruction limit), max. | ±35 V |
| permissible input voltage for voltage input (destruction limit), max. | 35 V |
| permissible input current for voltage input (destruction limit), max. | 40 mA |
| permissible input current for current input (destruction limit), max. | 40 mA |
| Cycle time (all channels) max. | 156.25 µs; 400 Hz suppression |
| Input ranges | |
| ● Voltage | Yes; ±10V, ±5V, ±2.5V |
| ● Current | Yes; 0 to 20 mA |
| ● Thermocouple | No |
| ● Resistance thermometer | No |
| ● Resistance | No |
| Input ranges (rated values), voltages | |
| ● -10 V to +10 V | Yes |
| — Input resistance (-10 V to +10 V) | ≥9 MOhm |
| ● -2.5 V to +2.5 V | Yes |
| — Input resistance (-2.5 V to +2.5 V) | ≥9 MOhm |
| ● -5 V to +5 V | Yes |
| — Input resistance (-5 V to +5 V) | ≥9 MOhm |
| Input ranges (rated values), currents | |
| ● 0 to 20 mA | Yes |
| — Input resistance (0 to 20 mA) | ≥ 250 Ohm |
| Analog outputs | |
| Number of analog outputs | 0 |
| Cable length | |
| ● shielded, max. | 100 m; shielded, twisted pair |
| Analog value generation for the inputs | |
| Measurement principle | integrating |
| Integration and conversion time/resolution per channel | |
| ● Resolution with overrange (bit including sign), max. | 11 bit; + sign |
| ● Integration time, parameterizable | Yes |
| ● Interference voltage suppression for interference frequency f1 in Hz | 40 dB, DC to 60 Hz |
| Smoothing of measured values | |
| ● parameterizable | Yes |
| ● Step: None | Yes |
| ● Step: low | Yes |
| ● Step: Medium | Yes |
| ● Step: High | Yes |
| Errors/accuracies | |
| Temperature error (relative to input range), (+/-) | 25 °C ±0.3%, to 55 °C ±0.6% total measurement range |
| Interrupts/diagnostics/status information | |
| Alarms | Yes |
| Diagnostics function | Yes |
| Alarms | |
| ● Diagnostic alarm | Yes |
| Diagnoses | |
| ● Wire-break | No |
| Diagnostics indication LED | |
| ● for status of the inputs | Yes |
| ● for maintenance | Yes |
| Standards, approvals, certificates | |
| CE mark | Yes |
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | Yes |
| Ambient conditions | |
| Free fall | |
| ● Fall height, max. | 0.3 m; five times, in product package |
| Ambient temperature during operation | |
| ● min. | -20 °C |
| ● max. | 60 °C |
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