Key Features
- 8 analog inputs: Provides 8 analog inputs.
- 14 bit resolution: Resolution is 14 bit.
- Voltage, current, and resistance signals: Supports voltage, current, and resistance measurement.
- Isolated analog inputs: Analog inputs are isolated, with internal/external separation.
- 0.416 ms cycle time: Cycle time is 0.416 ms.
Applications
- Analog signal acquisition for voltage, current, and resistance inputs: Acquires voltage, current, and resistance signals through the 8 analog inputs.
- Connection of 2-wire and 4-wire current transmitters: Supports current measurement as 2-wire transducer and 4-wire transducer connections.
- Resistance measurement with 2-wire, 3-wire, or 4-wire connection: Supports resistance measurement with two-wire, three-wire, and four-wire connections.
Technical Summary
| Number of analog inputs | 8 |
|---|---|
| Resolution | 14 bit |
| Basic execution time of the module | 0.42 ms |
| Cycle time | 0.416 ms |
| Input ranges | Voltage; Current; Resistance |
| 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 |
| Resistance input range | 0 to 600 ohms |
| Load voltage L+ rated value (DC) | 24 V; Only required for supplying 2-wire transmitters |
| Reverse polarity protection | Yes |
| Potential separation analog inputs | Yes; internal/external |
| Potential separation between the channels and backplane bus | Yes |
Frequently Asked Questions
What is Siemens 6ES7431-1KF20-0AB0 used for?
It is a SIMATIC S7-400 analog input SM 431 module with 8 analog inputs.
What resolution does the SM 431 analog input module provide?
The resolution is 14 bit.
Which signal types does 6ES7431-1KF20-0AB0 support?
It supports voltage, current, and resistance measurement.
What voltage and current input ranges are available?
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.
What should be checked for installation power and connection details?
The module uses 24 V DC load voltage L+ only for supplying 2-wire transmitters, and reverse polarity protection is Yes.
