Motor Operation - AUMA SAEx 07.2 Operation Instructions Manual

Operation
Overload protection for
manual operation

7.2 Motor operation

NOTICE
How to proceed 1. Switch on the power supply.
34
To protect the valve, an overload protection is available as option for manual opera-
tion. If the torque applied at the handwheel exceeds a certain value (refer to order-re-
lated technical data sheet), the shear pins will rupture and thus protect the valve from
damage. The handwheel can no longer transmit the torque (= handwheel is spinning).
Motor operation is still possible. In case of shear pin rupture due to overload, imperat-
ively replace the safety hub.
Figure 34: Handwheel without/with overload protection
[1]
[1] Handwheel without overload protection
(standard)
Valve damage due to incorrect setting!
à Perform all commissioning settings and the test run prior to motor operation.
Actuator controls are required to operate an actuator during motor operation. An addi-
tional local control unit must be provided if local actuator operation is required.
2. To close the valve, switch on motor operation in direction CLOSE.
ð Valve shaft turns counterclockwise in direction CLOSE.
[2] Handwheel with overload protection/
safety hub (option)
[2]