Product information
Overview
Key Features
- 8 isolated analog inputs: Has 8 analog inputs for voltage and current measurement, plus 4 inputs for resistance measurement.
- 14-bit resolution: Provides 14-bit resolution with overrange, including sign.
- Supported input ranges: 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.
- 24 V supply for 2-wire transmitters: Load voltage L+ is rated at 24 V DC and is required only for supplying 2-wire transmitters.
- Isolated design: Analog inputs are electrically isolated from the backplane bus and load voltage L+, but not between channels.
- Product lifecycle: Product lifecycle: Announcement of product phase-out.
Technical Summary
| Product | 6ES7431-1KF20-0AB0 |
|---|---|
| Product type | SIMATIC S7-400 SM 431 analog input module |
| Analog inputs | 8 |
| Resolution | 14 bit with overrange, including sign |
| Measurement | Voltage, current and resistance |
| Input ranges | 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; 0 to 600 ohms |
| Load voltage L+ | 24 V DC, only required for supplying 2-wire transmitters |
| Product lifecycle | Announcement of product phase-out |
Frequently Asked Questions
What is Siemens 6ES7431-1KF20-0AB0?
It is a SIMATIC S7-400 SM 431 analog input module with 8 isolated analog inputs and 14-bit resolution.
Which signals can this module measure?
It supports voltage, current and resistance measurement. Supported ranges include 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.
Is the module suitable for 2-wire transmitters?
Yes. Load voltage L+ is rated at 24 V DC and is required only for supplying 2-wire transmitters.
Are the analog inputs isolated from one another?
No. The channels are not isolated from one another, while the analog inputs are isolated from the backplane bus and load voltage L+.
What details should I include in a quotation request?
Please provide the required quantity, destination and project-list context so the exact product requirement can be reviewed.
