MS5 – Control Unit Limit/Torque Switch
- Product No. 70
- Model: MS5 Control Unit
- Type: Mechanical Limit & Torque Switch Assembly
- Function:
- 2 × Limit switches (OPEN / CLOSE end positions)
- 2 × Torque switches (OPEN / CLOSE overload protection)
- Application: AUMA multi-turn actuators (SA / SAR series)
- Operating Principle: Cam-driven mechanical switching linked to output shaft rotation
- Switch Contacts: Potential-free micro switches (NO/NC configuration)
- Control Function:
- Stops motor at valve end positions
- Trips motor under overload torque conditions
- Provides status feedback to control system
Description
The MS5 Control Unit is a mechanical switch assembly used in AUMA actuators to provide end position (OPEN/CLOSE) and overload protection. It combines limit switches and torque switches in one compact unit, ensuring safe and reliable shutdown of the actuator when the valve reaches its end position or when excessive torque is detected.
It is a purely mechanical feedback system widely used in classic AUMA actuator configurations for robust and fail-safe operation.