Key Features
- Analog input function: SB 1231 analog input module with 1 AI.
- Input signal options: +/-10 V DC (12 bit resol.) or 0-20 mA.
- Supply voltage: 24 V DC rated value.
- Diagnostics: Alarms, diagnostics function, and diagnostic alarm.
- Installation feedback: Diagnostics indication LED for status of the inputs and for maintenance.
Applications
- Analog signal acquisition: Reads one analog input as current or voltage differential input.
- Voltage input integration: Connects -10 V to +10 V, -5 V to +5 V, or -2.5 V to +2.5 V voltage signals for measurement.
- Current input integration: Connects 0 to 20 mA current signals for measurement.
Technical Summary
| Product type designation | SB 1231, AI 1×12 bit |
|---|---|
| Number of analog inputs | 1; Current or voltage differential inputs |
| Input ranges | Voltage; Yes; ±10V, ±5V, ±2.5V |
| Input ranges (rated values), currents | 0 to 20 mA; Yes |
| Supply voltage, rated value (DC) | 24 V |
| Input current from backplane bus 5 V DC, typ. | 55 mA |
| Power loss, typ. | 0.4 W |
| Cycle time (all channels) max. | 156.25 μs; 400 Hz suppression |
| Input resistance (-10 V to +10 V) | ≥9 MOhm |
| Input resistance (0 to 20 mA) | ≥ 250 Ohm |
| Temperature error | 25 °C ±0.3%, to 55 °C ±0.6% total measurement range |
| Diagnostics | Alarms; Yes |
Frequently Asked Questions
What is Siemens 6ES7231-4HA30-0XB0?
It is an SIMATIC S7-1200 SB 1231 analog input module with 1 AI.
Which input signals does this SB 1231 support?
It supports +/-10 V DC (12 bit resol.) and 0-20 mA input signals.
What is the rated supply voltage for 6ES7231-4HA30-0XB0?
The rated supply voltage is 24 V DC.
How many analog inputs does the module provide?
It provides 1 analog input.
What diagnostics are available on this module?
It includes alarms, a diagnostics function, and a diagnostic alarm, plus diagnostics indication LEDs for input status and maintenance.
