Product information
Overview
Key Features
- 8 isolated analog inputs: The SM 431 module has 8 analog inputs; 8 support voltage/current measurement and 4 support resistance measurement.
- 13 bit resolution: Resolution with overrange, including sign, is 13 bit.
- Supported input ranges: The module supports 1 V to 5 V, -1 V to +1 V, -10 V to +10 V, -20 mA to +20 mA, 4 mA to 20 mA, and 0 to 600 ohms.
- Input protection limits: The permissible input voltage for voltage input is 50 V maximum. The permissible input current for current input is 50 mA maximum, with 40 mA continuous.
- Signal encoder connections: Supported connections include voltage measurement, current measurement with 2-wire or 4-wire transducers, and resistance measurement with 2-wire, 3-wire, or 4-wire connections.
- Electrical isolation: The analog inputs are isolated from the backplane bus, but not between channels. Isolation is tested with 2 120 V DC between the bus and analog part.
Technical Summary
| Product | 6ES7431-1KF00-0AB0 |
|---|---|
| Module | SIMATIC S7-400, analog input SM 431 |
| Analog inputs | 8 isolated AI |
| Resolution | 13 bit |
| Voltage measurement | 1 V to 5 V; -1 V to +1 V; -10 V to +10 V |
| Current measurement | -20 mA to +20 mA; 4 mA to 20 mA |
| Resistance measurement | 0 to 600 ohms; usable up to 500 ohms |
| Input current | 350 mA maximum from backplane bus 5 V DC |
| Power loss | 1.8 W typical |
| Basic conversion time | 23 / 25 ms |
| Product lifecycle | Announcement of product phase-out |
Frequently Asked Questions
What is the exact Siemens module configuration?
It is the 6ES7431-1KF00-0AB0 SIMATIC S7-400 analog input SM 431 module with 8 isolated analog inputs and 13 bit resolution.
Which signal ranges does the module support?
It supports voltage ranges of 1 V to 5 V, -1 V to +1 V, and -10 V to +10 V; current ranges of -20 mA to +20 mA and 4 mA to 20 mA; and resistance from 0 to 600 ohms, usable up to 500 ohms.
Are the analog inputs isolated from one another?
No. The analog inputs are not isolated between channels, but they are isolated from the backplane bus.
What information should I provide for a quotation?
Provide the required quantity and destination for this exact 6ES7431-1KF00-0AB0 module.
