Key Features
- Analog input module: SIMATIC S7-300 analog input SM 331 with 2 AI.
- Signal support: Supports U/I/thermocouple/resistor input types.
- Isolation: Isolated analog input module with isolation tested with 500 V DC.
- Diagnostics and alarms: Includes alarm and diagnostics functions, with diagnostic information readable and diagnostic alarm available.
- Front connection: Required front connector: 20-pin.
- Active backplane bus handling: Removing and inserting with active backplane bus.
Applications
- Analog signal acquisition: For acquiring voltage, current, thermocouple, resistance thermometer, and resistance signals through the module's analog inputs.
Technical Summary
| Product function | Analog input SM 331 |
|---|---|
| Number of analog inputs | 2 |
| Supported input types | U/I/thermocouple/resistor |
| Isolation tested with | 500 V DC |
| Required front connector | 20-pin |
| Load voltage L+ rated value (DC) | 24 V |
| Input current from load voltage L+ (without load), max. | 30 mA |
| Input current from backplane bus 5 V DC, max. | 50 mA |
| Power loss, typ. | 1 W |
Frequently Asked Questions
What is Siemens 6ES7331-7KB02-0AB0?
It is a SIMATIC S7-300 analog input SM 331 module.
How many analog inputs does 6ES7331-7KB02-0AB0 have?
It has 2 analog inputs.
Which input signals are supported by 6ES7331-7KB02-0AB0?
It supports U/I/thermocouple/resistor signals.
What front connector does 6ES7331-7KB02-0AB0 require?
It requires a 20-pin front connector.
What are the main installation-related facts for 6ES7331-7KB02-0AB0?
The module allows removing and inserting with active backplane bus, and its dimensions are 40 mm wide, 125 mm high, and 120 mm deep.
