Sun Yeh Electrical OM Series - Page 2

2
2020.01
SY01-B002C-EN
OM Series Quarter-turn Electric Valve Actuator - Modulating Control
CAUTION:
 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.
Actuator Set-up
a. Turn power off.
b. Loosen the locknut and unwind
both Open and Close Mechanical
end stop screws for 7 turns.
c. Loosen the M5 set screw on the
sector gear or round gear.
【Open】
【
Close
】
e. Supply power to the fully-open position. Screw in the Open
(left) Mechanical end stop screw until it bottoms out, and then
turn back for 3/4-1 turn based on the actuator model listed below.
 OM-2 to OM-6, OM-F, OM-G and OM-H：1 turn.
 OM-7 to OM-8：3/4 turn.
 OM-9 to OM-13：1/2 turn.
f. Tighten the locknut.
g. Supply power to the fully-closed position. Screw in the Close
(right) Mechanical end stop screw until it bottoms out, and then
turn back for 3/4-1 turn based on the actuator model listed below.
 OM-2 to OM-6, OM-F, OM-G and OM-H：1turn.
 OM-7 to OM-8：3/4 turn.
 OM-9 to OM-13：1/2 turn.
h. Tighten the locknut of mechanical end stops.
i. Supply the power to confirm that the limit switches achieve the
fully open-close stroke.
j. Supply power to run the actuator to the fully-closed position.
Adjust the gear and the set screws based on the actuator model
listed below.
 OM-A and OM-AM：Rotate the round gear counter-clockwise
to the end and tighten the M5 set screw.
 OM-1：Rotate the round gear clockwise to the end and tighten
the M5 set screw.
 OM-2 to OM-13, OM-F, OM-G and OM-H：Rotate the sector
gear clockwise to the end and tighten the M5 set screw.
k. The setting procedure is now completed.
【OM-A and OM-AM】
TC2”CLOSE”
TC4 (Optional Item)
TC1”OPEN”
TC3 (Optional Item)
Clockwise
：increase closing degree.
Counter-clockwise：decrease closing degree.
Clockwise：decrease opening degree.
Counter-clockwise：increase opening degree.
Tool：2.5 mm Allen Key
【OM-1】
TC2”CLOSE”
TC4 (Optional Item)
TC1”OPEN”
TC3 (Optional Item)
Clockwise：decrease closing degree.
Counter-clockwise：increase closing degree.
Clockwise：increase opening degree.
Counter-clockwise：decrease opening degree.
Tool：2.5 mm Allen Key
【OM-2 to OM-13, OM-F, OM-G and OM-H】
TC2”CLOSE”
TC4 (Optional Item)
TC1”OPEN”
TC3 (Optional Item)
Clockwise：decrease closing degree.
Counter-clockwise：increase closing degree.
Clockwise：increase opening degree.
Counter-clockwise：decrease opening degree.
Tool：2.5 mm Allen Key
Round Gear
Set Screw M5
【OM-1, OM-A and OM-AM】
Sector Gear
Set Screw M5
【OM-2 to OM-13, OM-F, OM-G and OM-H】
 OM-A, OM-AM & OM-1 (The layout is based on 110 /
220V.)
Modulating Control Board Adjustment
▲Turn power off before adjusting below settings.
❹
VR52
❷
Sensitivity Switch
❸
VR51
❶ Dip-Switch
Mechanical End Stops
d. Refer to below illustrations to adjust the TC1 - TC4 to set
the fully-open and fully-closed position.
❾LDR
❿LDG
❻ VR2
❺VR1