Product information
Overview
Key Features
- 8 analog inputs: Has 8 current or voltage differential inputs with 14-bit ADC.
- Selectable input ranges: Supports ±10 V, ±5 V, ±2.5 V, 0 to 20 mA and 4 to 20 mA.
- 24 V DC supply: Rated supply value is 24 V DC, with a permissible range of 20.4 V to 28.8 V.
- Configurable signal processing: Has parameterizable integration time and measured-value smoothing with None, low, Medium and High steps.
- Diagnostics and protection: Provides diagnostics, diagnostic alarm, supply-voltage monitoring, wire-break detection, DIAG LED indication and IP20 protection.
Technical Summary
| Product type | SM 1231, AI 8x 14 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 |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Cycle time | 1.25 ms max.; at 400 Hz rejection |
| Resolution with overrange | 13 bit; + sign |
| Input resistance | ≥1 MOhm for voltage ranges; < 290 Ω, > 270 Ω for current ranges |
| Basic error limit | Voltage and current: ±0.1% relative to input range |
| Common mode voltage | 12 V max. |
| IP degree of protection | IP20 |
Frequently Asked Questions
What is the exact product type of Siemens 6ES7231-4HF50-0XB0?
It is an SM 1231 analog input module with 8 analog inputs and 14-bit ADC.
Which signal ranges does this 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 does the module require?
The rated supply value is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
How can I request a quotation for this exact module?
Send the required quantity, destination and project-list context for a model-specific quotation.
