Product Description
Key Features
- Product identity: SIMATIC S7-1200 G2 SM 1231 analog input module, product type designation SM 1231, AI 8x 14 bit.
- Analog input capacity: 8 analog inputs with current or voltage differential inputs.
- Input ranges: Voltage: ±10 V, ±5 V and ±2.5 V; current: 0 to 20 mA and 4 to 20 mA.
- Supply and consumption: Rated supply: 24 V DC; permissible range: 20.4 V to 28.8 V DC; typical current consumption: 45 mA.
- Installation and protection: Maximum shielded cable length: 100 m with shielded, twisted pair; IP degree of protection: IP20.
- Lifecycle and physical data: Lifecycle: Active Product. Packaging dimensions: 150.00 x 47.00 x 110.00 mm; net weight: 0.175 kg.
Technical Summary
| Product type designation | SM 1231, AI 8x 14 bit |
|---|---|
| Analog inputs | 8; Current or voltage differential inputs |
| Input ranges | Voltage: ±10 V, ±5 V, ±2.5 V; current: 4 to 20 mA, 0 to 20 mA |
| Supply voltage, rated value (DC) | 24 V |
| Permissible supply voltage range (DC) | 20.4 V to 28.8 V |
| Cycle time, all channels, max. | 1.25 ms; at 400 Hz rejection |
| Resolution with overrange, max. | 13 bit; + sign |
| IP degree of protection | IP20 |
| Product lifecycle | Active Product |
Frequently Asked Questions
What order number should be confirmed for this analog input module?
Confirm Siemens order number 6ES7231-4HF50-0XB0 and product type SM 1231, AI 8x 14 bit.
Which input signals does 6ES7231-4HF50-0XB0 support?
It supports voltage ranges ±10 V, ±5 V and ±2.5 V, plus current ranges 0 to 20 mA and 4 to 20 mA.
What supply voltage does the module require?
The rated supply voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
What cable and protection details should be checked?
The maximum shielded cable length is 100 m with shielded, twisted pair, and the protection rating is IP20.
