Sun Yeh Electrical M Series, Operation Manual, Page: 57 / 75

【M Series】Multi-turn Electric Valve Actuator
54
2021.06
Torque Retries 8.7.5
Push Button Function
Back to previous level to quit.
Enter an incremental value for the parameter.
Not applicable.
Save the change.

The actuators provide jammed valve protection by torque sensing. If the actuator
stops because of overload during intermediate travel in closing the valve. A retry
sequence can be initiated by setting the parameter from 0 to 5 to achieve the number of
retries as per application requirements. Zero stands the retry is not implemented.

When the increase in torque occurs because of overload, a retry sequence will be initi-
ated by setting the parameters as following :

The parameter is set to 0. As soon as the increase in torque occurs because of
overload, the actuator stops and meanwhile alarms.

The parameter is set to 1, 2, 3, 4, or 5... When the increase in torque occurs
because of overload, the actuator moves back for 3% of the entire travel and then
move forth to attempt to fix the jammed valve repeatedly by 1, 2, 3, 4, or 5 tries.
If faulier to pass the block, actuator will operate to opposite direction about 3%
of stroke and stop running, then send a warning message.

Default : 0.
Note : If the operating time of moving back for 3% of the entire travel is less
than 3 seconds, the actuator will increase it to more than 3 seconds to
ensure effectiveness of the jammed valve protection.
No. Menu
Lowest
User Level
6.5.1 Close Middle User
6.5.2 Open Middle User
[Close Middle]