Overview
The Siemens SM 331 6ES7331-7KB02-0AB0 is a high-precision analog input module for the SIMATIC S7-300 automation platform. It features two isolated analog inputs and supports voltage, current, thermocouple, and resistor measurements. Designed for demanding industrial applications, the module offers diagnostics, alarm functions, and hot-swapping capabilities, ensuring minimal downtime during maintenance.
Its compact design and robust performance make it suitable for precise data acquisition in process control, manufacturing, and automated systems.
Key Features
- Module Type: Analog Input (SM 331)
- Number of Inputs: 2 isolated analog inputs (AI)
- Resolution: 9 / 12 / 14 bits for accurate signal conversion
- Supported Signals:
- Voltage (U)
- Current (I)
- Thermocouple
- Resistor
- Hot-Swapping: Module can be removed or inserted while the backplane bus is active
- Diagnostic Functions: Built-in alarms and diagnostic reporting for fault detection
- Connection: 20-pole interface for reliable integration
Technical Specifications
| Feature | Specification |
|---|---|
| Product Lifecycle | PM400 – Phase-out announced (since 01.10.2023) |
| Net Weight | 0.249 kg |
| Dimensions | 12.80 x 15.10 x 5.00 cm |
| Country of Origin | Germany |
| Regulatory Compliance | RoHS, WEEE, REACH |
| Export Control | AL: N / ECCN: 9N9999 |
Applications
- Industrial process control systems requiring accurate analog measurement
- Automation lines in manufacturing for voltage, current, or thermocouple signals
- Integration with SIMATIC S7-300 PLCs for flexible and reliable I/O expansion
Details
| Weight | 0.249 kg |
|---|---|
| Dimensions | 325 × 384 × 127 mm |
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