Technical Summary
| Product designation | 6ES7431-1KF20-0AB0 |
|---|---|
| Module type | SIMATIC S7-400, analog input SM 431 |
| Analog inputs | 8 |
| Resolution | 14 bit |
| Cycle time | 0.416 ms |
| Input ranges | Voltage; Current; Resistance |
| Current measurement connections | for current measurement as 2-wire transducer; for current measurement as 4-wire transducer |
| Resistance measurement connections | for resistance measurement with two-wire connection; for resistance measurement with three-wire connection; for resistance measurement with four-wire connection |
| Load voltage L+ | 24 V; Only required for supplying 2-wire transmitters |
| Reverse polarity protection | Yes |
| Power loss, typ. | 4.9 W |
| Isolation tested with | 2 120 V DC between bus and analog section; 500 V DC between bus and local ground; 500 V DC between analog part and L+/M; 2 120 V DC between analog part and local ground; 2 120 V DC between L+/M and local ground |
Key Features
SIMATIC S7-400 SM 431 analog input module
Analog input module for the SIMATIC S7-400 series.
Analog input module for the SIMATIC S7-400 series.
8 isolated analog inputs
Provides 8 AI with potential separation between the channels and backplane bus.
Provides 8 AI with potential separation between the channels and backplane bus.
14 bit resolution
Resolution is 14 bit, with 14 bit including sign for overrange.
Resolution is 14 bit, with 14 bit including sign for overrange.
Voltage, current, and resistance measurement
Supports voltage, current, and resistance input ranges.
Supports voltage, current, and resistance input ranges.
0.416 ms cycle time
Cycle time is 0.416 ms.
Cycle time is 0.416 ms.
Applications
Voltage measurement input
For voltage measurement with the analog inputs.
For voltage measurement with the analog inputs.
Current measurement input
For current measurement, including 2-wire transmitter and 4-wire transmitter connections.
For current measurement, including 2-wire transmitter and 4-wire transmitter connections.
Resistance measurement input
For resistance measurement, including two-wire, three-wire, and four-wire connections.
For resistance measurement, including two-wire, three-wire, and four-wire connections.
Frequently Asked Questions
What is 6ES7431-1KF20-0AB0 in the SIMATIC S7-400 series?
It is a SIMATIC S7-400 analog input SM 431 module.
How many analog inputs does 6ES7431-1KF20-0AB0 have?
It has 8 analog inputs.
What measurement types does 6ES7431-1KF20-0AB0 support?
It supports voltage, current, and resistance measurement.
What is the resolution and cycle time of 6ES7431-1KF20-0AB0?
The resolution is 14 bit and the cycle time is 0.416 ms.
What supply value is listed for load voltage L+ on 6ES7431-1KF20-0AB0?
Rated value (DC) is 24 V; only required for supplying 2-wire transmitters.
