Key Features
- SIMATIC S7-300 analog input module: Analog input SM 331 for the SIMATIC S7-300.
- 8 isolated analog inputs: Provides 8 AI with isolation between the channels and the backplane bus.
- 13 bit resolution: Resolution with overrange is 13 bit including sign.
- Multiple signal types: Supports voltage, current, resistance thermometer, and resistance inputs.
- 40-pole front connector: Uses a required front connector with 40 pins.
Applications
- Voltage signal acquisition: For voltage measurement on the analog inputs.
- Current signal acquisition: For current measurement, including 2-wire transducer and 4-wire transducer connection.
- Resistance thermometer input: For resistance thermometer measurement with Pt 100, Ni 100, Ni 1000, and LG-Ni1000.
- Resistance measurement: For resistance measurement with two-wire, three-wire, and four-wire connections.
Technical Summary
| Product function | Analog input SM 331 |
|---|---|
| Number of analog inputs | 8 |
| Resolution with overrange | 13 bit |
| Basic conversion time | 66 / 55 ms |
| Integration time, parameterizable | Yes; 60 / 50 ms |
| Supported input ranges | Voltage; Current; Resistance thermometer; Resistance |
| Front connector | 40-pin |
| Power loss, typ. | 0.4 W |
| Input current from backplane bus 5 V DC, max. | 90 mA |
| Potential separation | between the channels and backplane bus: Yes |
| Isolation tested with | 500 V DC |
Frequently Asked Questions
What does Siemens 6ES7331-1KF02-0AB0 do?
It is a SIMATIC S7-300 analog input SM 331 module with 8 AI.
Which signal types does this 8 AI module support?
It supports voltage, current, resistance thermometer, and resistance inputs.
What are the key conversion and resolution values?
Resolution with overrange is 13 bit including sign, and basic conversion time is 66 / 55 ms.
What front connection is required for 6ES7331-1KF02-0AB0?
The module uses a required 40-pin front connector.
