Product Description
Key Features
- SIMATIC S7-400 analog input: SM 431 with 8 analog inputs and 16-bit resolution for voltage, current, and thermocouple measurement.
- Input ranges: Rated voltage ranges include 1 V to 5 V, -1 V to +1 V, -10 V to +10 V, -100 mV to +100 mV, -2.5 V to +2.5 V, -20 mV to +20 mV, -250 mV to +250 mV, -5 V to +5 V, -50 mV to +50 mV, -500 mV to +500 mV, and -80 mV to +80 mV. Rated current ranges include 0 to 20 mA, -10 mA to +10 mA, -20 mA to +20 mA, -3.2 mA to +3.2 mA, 4 mA to 20 mA, and -5 mA to +5 mA.
- Thermocouple support: Supports Type B, E, J, K, L, N, R, S, T, and U thermocouples, with parameterizable characteristic linearization and internal or external temperature compensation.
- Diagnostics and alarms: Has parameterizable diagnostics, diagnostic alarms, parameterizable hardware interrupts, limit value alarms, and readable diagnostic information.
- Isolation and connections: Analog inputs are isolated internally and externally, between channels and between channels and the backplane bus. Isolation is tested with 1 500 V DC.
- Lifecycle and physical data: Product lifecycle: Announcement of product phase-out. Dimensions: 25 mm width, 290 mm height, and 210 mm depth; weight, approx. 650 g.
Applications
- Voltage measurement: Supports voltage measurement through the analog inputs.
- Current measurement: Supports current measurement, including 4-wire transducer connection.
- Thermocouple measurement: Supports thermocouple measurement with parameterizable linearization and temperature compensation.
Technical Summary
| Product | Siemens 6ES7431-7KF00-0AB0 |
|---|---|
| Family | SIMATIC S7-400, analog input SM 431 |
| Analog inputs | 8 |
| Resolution | 16 bit |
| Input types | Voltage, current, thermocouple |
| Conversion time | 20 ms |
| Thermocouple types | B, E, J, K, L, N, R, S, T, U |
| Isolation test | 1 500 V DC |
| Product lifecycle | Announcement of product phase-out |
Frequently Asked Questions
What order number should be confirmed for this SIMATIC S7-400 analog input?
Confirm the complete order number 6ES7431-7KF00-0AB0 on the installed part or nameplate.
How many analog inputs does the 6ES7431-7KF00-0AB0 have?
It has 8 analog inputs with 16 bit resolution.
Which input signals does this module support?
It supports voltage, current, and thermocouple measurement; resistance thermometer and resistance inputs are not supported.
What lifecycle information is supplied for this configuration?
Product lifecycle: Announcement of product phase-out.
