Product Overview
Technical Summary
| Product | 6ES7431-1KF20-0AB0 |
|---|---|
| Family | SIMATIC S7-400, analog input SM 431 |
| Analog inputs | 8 isolated AI |
| Resolution | 14 bit |
| Supported measurements | Voltage, current, and resistance |
| 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 |
| Rated load voltage | 24 V DC; only required for supplying 2-wire transmitters |
| Basic execution time | 0.42 ms with all channels released |
| Product lifecycle | Announcement of product phase-out |
Key Features
- Product designation: SIMATIC S7-400, analog input SM 431; 8 isolated analog inputs with 14-bit resolution.
- Measurement modes: Supports voltage, current, and resistance measurement; thermocouple and resistance thermometer inputs are not supported.
- Input ranges: 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.
- Supply and protection: Rated load voltage L+: 24 V DC, only required for supplying 2-wire transmitters; reverse polarity protection: Yes.
- Conversion performance: Resolution with overrange: 14 bit; basic conversion time: 52 μs; basic execution time with all channels released: 0.42 ms.
- Signal encoder connections: Supports voltage measurement, 2-wire and 4-wire current measurement, and 2-wire, 3-wire, and 4-wire resistance measurement.
Applications
- Voltage measurement: Supports voltage measurement through the listed voltage input ranges.
- Current measurement: Supports current measurement with 2-wire or 4-wire transducers through the listed current input ranges.
- Resistance measurement: Supports resistance measurement with 2-wire, 3-wire, or 4-wire connections.
Frequently Asked Questions
What specifications distinguish 6ES7431-1KF20-0AB0?
Check that it is a SIMATIC S7-400 SM 431 analog input module with 8 isolated analog inputs, 14-bit resolution, and voltage, current, and resistance measurement.
Which input ranges should be checked for this code?
Check 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.
What code and nameplate details should be checked before inquiry?
Check the complete order number 6ES7431-1KF20-0AB0 and the nameplate designation SIMATIC S7-400, analog input SM 431.
What quantity and destination are needed for a quotation?
Provide the required quantity and destination together with the complete order number.
