Product Overview
Applications
Supports monitoring the supply voltage.
Supports wire-break detection for the analog input configuration.
Technical Summary
| Product type | SM 1231, AI 8×13 bit |
|---|---|
| Analog inputs | 8; Current or voltage differential inputs |
| Input ranges | ±10 V, ±5 V, ±2.5 V, 0 to 20 mA, 4 to 20 mA |
| Rated supply voltage | 24 V DC |
| Resolution with overrange | 12 bit; + sign |
| Maximum cycle time | 625 μs (all channels) |
| Typical current consumption | 60 mA |
| Typical power loss | 1.5 W |
| Input resistance | ≥9 MOhm for voltage ranges; 280 Ω for current ranges |
| Protection | IP20 |
Key Features
Has 8 current or voltage differential inputs.
Supports ±10 V, ±5 V, ±2.5 V, 0 to 20 mA, and 4 to 20 mA ranges.
Provides 12 bit plus sign resolution and a maximum cycle time of 625 μs for all channels.
Rated supply voltage is 24 V DC.
Has alarms, diagnostic functions, diagnostic alarms, supply-voltage monitoring, wire-break detection, and input-status LEDs.
IP degree of protection: IP20.
Frequently Asked Questions
What is the exact product type of Siemens 6ES7231-4HF32-0XB0?
It has product type designation SM 1231, AI 8×13 bit.
Which signal ranges does this analog input module support?
It supports ±10 V, ±5 V, ±2.5 V, 0 to 20 mA, and 4 to 20 mA. Thermocouple, resistance thermometer, and resistance inputs are not supported.
What supply voltage and cycle time apply to the module?
The rated supply voltage is 24 V DC, and the maximum cycle time for all channels is 625 μs.
What project details should accompany a quotation request for this line item?
Include the required quantity, destination, schedule context, and any additional BOM lines.
