Safety guard switching unit
The safety controller to support maintenance mode and normal operation mode in a safe way.
- Two operation modes to support auto switching for applications where machine an worker co-operate and manual switching for applications with limitaions in operation like maintenance
- Clear LED diagnosis of all in- and outputs
- Applicable up to Category 4 acc. EN 954-1
Safety outputs 1
Auxiliary outputs 2
Worker is loading and unloading the machine manually. When loading is finished, robot cycle is started manually by the worker. When robots return to their home position, loading cycle is selected automatically.
Loading condition: Safety sensor B is not active, safety sensor A is active because the robots are not allowed to move to the loading area while the worker loads the machine. So the worker is safe because safety sensor A is active.
Robot work condition: Safety sensor B is active, safety sensor A is not active because the worker is not allowed to move to the loading area when the robots work. So the worker is safe because safety sensor B stops the machine if he moves to the loading area.
Worker has to do maintenance in this machine. While maintenance, it is necessary to move the machine in a limited way. The worker has to select automatic mode or manual mode manually by using the mode selector switch.
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