Product Overview
Applications
Supports voltage measurement through the listed voltage input ranges.
Supports current measurement with 2-wire or 4-wire transducers through the listed current input ranges.
Supports resistance measurement using 2-wire, 3-wire, or 4-wire connections.
Technical Summary
| Product | 6ES7431-1KF20-0AB0 |
|---|---|
| Module | SIMATIC S7-400 SM 431 analog input |
| Analog inputs | 8 isolated AI |
| Resolution | 14 bit |
| Voltage ranges | 1 V to 5 V; -1 V to +1 V; -10 V to +10 V |
| Current ranges | -20 mA to +20 mA; 4 mA to 20 mA |
| Resistance range | 0 to 600 ohms |
| Load voltage | 24 V DC; only required for supplying 2-wire transmitters |
| Basic conversion time | 52 μs |
| Basic module execution time | 0.42 ms, all channels released |
| Product lifecycle | Announcement of product phase-out |
Key Features
8 isolated analog inputs; voltage and current measurement are supported on 8 inputs, while resistance measurement is supported on 4 inputs.
14 bit resolution with 52 μs basic conversion time and 0.42 ms basic module execution time when all channels are released.
Voltage: 1 V to 5 V, -1 V to +1 V, and -10 V to +10 V; current: -20 mA to +20 mA and 4 mA to 20 mA; resistance: 0 to 600 ohms.
Rated load voltage is 24 V DC, required only for supplying 2-wire transmitters; reverse polarity protection is provided.
Supports voltage measurement, 2-wire and 4-wire current measurement, and 2-wire, 3-wire, and 4-wire resistance measurement.
Product lifecycle: Announcement of product phase-out. Packaging dimensions are 29.60 x 23.10 x 3.80 cm and net weight is 0.813 kg.
Frequently Asked Questions
What is the exact Siemens line item?
The exact line item is Siemens 6ES7431-1KF20-0AB0, a SIMATIC S7-400 SM 431 analog input module.
How many analog inputs does the module have?
It has 8 isolated analog inputs. Voltage and current measurement use 8 inputs, while resistance measurement uses 4 inputs.
Which input ranges are supported?
Supported ranges are 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.
What supply is required for 2-wire transmitters?
A rated load voltage of 24 V DC is required only for supplying 2-wire transmitters.
What should be included in a quotation request?
Include the required quantity, destination, schedule context, and any additional BOM lines for the 6ES7431-1KF20-0AB0 request.
