Quarter -Turn Electric Valve Actuator【OM Series】 Sun Yeh Ele. Ind. Co., Ltd. | 2021.11
4.4 Actuator Set-up
The power must be off during this procedure so as to avoid damage to the actuator.
Do not make adjustments to the mechanical end stops when actuator is in motion.
All steps below must be completed before normal operation.
The actuators have been set and calibrated at the factory. Most of products will not require
recalibration of these settings. However these are general settings. After valve and actuator are
bolted together, apply power to verify the end positions are correct. If an adjustment is required,
please follow steps below:
4.4.1 Instructions
The travel cams are set to control the open and closed position of the valve. See
below procedure for corresponding actuator model:
OM-1, OM-A and OM-AM：The position is set to stop the travel of the actuator
when the travel cams activate the limit switch.
OM-2 to OM-13, OM-F, OM-G and OM-H,OM-J：The position is set to stop the
travel of the actuator when the travel cams don’t activate the limit switch.
The standard is with two limit switches (LS1 & LS2) and cams (TC1 & TC2).
LS1 & LS2：LS1is for open and LS2 is for close. They limit the fully-open and
fully-closed travel range by disabling the electric motor.
LS3 & LS4 are optional. They allow external equipment to confirm that the valve
has reached the fully-open and fully-closed positions.
Dry contact sequence diagram (LS3 & LS4)
Solid line ( )：Dry contact in conductive state.
Dotted line ( )：Dry contact in non-conductive state.
【OM-2 to OM-13, OM-F, OM-G, OM-H】
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