Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Module type | SIMATIC S7-400 analog input SM 431 |
| Analog input channels | 16 non-isolated inputs |
| Resolution with overrange | 13 bit including sign |
| Voltage input ranges | 1 V to 5 V; -1 V to +1 V; -10 V to +10 V |
| Current input ranges | -20 mA to +20 mA; 4 mA to 20 mA |
| Load voltage L+ | 24 V DC; only required for supplying 2-wire transmitters |
| Basic conversion time | 55 / 65 ms |
| Diagnostics function | No |
Applications
- Voltage measurement: Measures voltage signals using supported voltage input ranges.
- Current measurement: Measures current signals, including current measurement as a 4-wire transducer.
Key Features
- Analog input channels: 16 non-isolated analog inputs, all for voltage/current measurement.
- Signal ranges: Voltage ranges include 1 V to 5 V, -1 V to +1 V, and -10 V to +10 V; current ranges include -20 mA to +20 mA and 4 mA to 20 mA.
- Resolution and timing: Resolution with overrange: 13 bit including sign. Integration time is parameterizable; basic conversion time is 55 / 65 ms.
- Supply and protection: 24 V DC load voltage L+ is required only for supplying 2-wire transmitters. Reverse polarity protection is provided.
- Signal connections: Voltage measurement and current measurement as a 4-wire transducer are supported. Maximum shielded cable length is 200 m.
- Isolation and diagnostics: The analog inputs are not electrically isolated from each other, the backplane bus, or load voltage L+. Diagnostics function: No.
Frequently Asked Questions
1. How many analog inputs does the 6ES7431-0HH00-0AB0 have?
It has 16 non-isolated analog inputs for voltage/current measurement.
2. Which voltage and current ranges does it support?
Voltage ranges are 1 V to 5 V, -1 V to +1 V, and -10 V to +10 V. Current ranges are -20 mA to +20 mA and 4 mA to 20 mA.
3. What resolution and conversion time does it have?
Resolution with overrange is 13 bit including sign. Basic conversion time is 55 / 65 ms, and integration time is parameterizable.
4. Is load voltage required?
24 V DC load voltage L+ is required only for supplying 2-wire transmitters.
5. Does it provide diagnostics or electrical isolation?
Diagnostics function: No. The analog inputs are not isolated from each other, the backplane bus, or load voltage L+.
