Sun Yeh Electrical OME Series User manual

SY07-C001F-EN

【OME Series】Explosion-proof Quarter-turn Valve Actuator
Contents
1 General Information...............................................................................................................................1
1.1 Safety Instructions.........................................................................................................................1
1.2 Installation Notices........................................................................................................................1
1.3 Working Conditions ......................................................................................................................3
1.4 Standards.......................................................................................................................................4
1.5 Inspection, Storage, Transport.......................................................................................................6
2 Product Overview..................................................................................................................................7
2.1 Features.........................................................................................................................................8
3 Product Mechanical Data.......................................................................................................................8
3.1 Parts Identification ........................................................................................................................8
3.2 Technical Information...................................................................................................................9
3.3 Mounting Base Details..................................................................................................................9
3.4 Actuator Selection.......................................................................................................................10
3.5 Sizing...........................................................................................................................................10
3.6 Duty Cycle ..................................................................................................................................11
3.7 Flamepath Joint...........................................................................................................................12
3.8 Nameplate Details.......................................................................................................................13
4 Mounting And Setup (OME-2 to OME-8)...........................................................................................14
4.1 Manual Device Installation.........................................................................................................14
4.2 Valve Mounting Instructions.......................................................................................................15
4.3 Wiring Instructions......................................................................................................................16
4.4 Actuator Set-up ...........................................................................................................................17
5 Torque Switch......................................................................................................................................23
5.1 Instructions..................................................................................................................................23
6 Modulating Control Board Adjustment...............................................................................................24
6.1 Modulating Control Board Surface.............................................................................................24
6.2 Procedure.....................................................................................................................................24
6.3 Dip Switch Setting (SW1)...........................................................................................................25
6.4 Sensitivity Switch Setting (SW2)................................................................................................28
6.5 Signal Setting for Open and Close Position................................................................................29
6.6 Troubleshooting of modulating controller ..................................................................................31
7 Troubleshooting...................................................................................................................................33
8 Warranty...............................................................................................................................................36
9 Disposal ...............................................................................................................................................36

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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1General Information
Failure to follow safety instructions may cause serious injury, equipment damage, or
voided warranty.
1.1 Safety Instructions
Installation, maintenance and repair works must be performed by trained personnel.
The handling shall follow the safety and warning instruction contained in this manual.
The user should read and follow instructions contained in this operation manual included
with the product. Failure to do this may result in damages and void warranty. Sun Yeh
will not be liable for damages due to operator negligence or misuse.
Local health and safety legislation shall be complied with.
In a few cases, the surface temperature may exceed 60°C (140 ℉). Please check the
surface temperature before operation, using an appropriate thermometer and wearing
protective gloves before operation.
1.2 Installation Notices
All setting of opening the cover must be made in the safe place, prevent the spark
from making the possibility of explosion.
Operating by handwheel: Do not use excessive force when operating the handwheel
as this can damage the actuator or valve.
General1.2.1
DO NOT install in ambient temperatures that exceed 70 °C (158 °F).
DO NOT, under any circumstances, remove the cover of the actuator while in a
hazardous location when the power is still live inside the actuator. This could cause
ignition of a hazardous atmosphere.
DO NOT, under any circumstances, use an explosion-proof electric actuator in a
hazardous location that does not meet the specification which the actuator was
designed for.
Mount, test, and calibrate actuators in non-hazardous location.
When removing the actuator, care must be taken not to scratch, scar or deform the
flame path of the cover or base of the actuator. That will negate the protection rating
of the enclosure in a hazardous location.
The explosion-proof electric actuator is shipped with mating surfces of the cover and
base. When assembling them, pay attention to the mating number (QA code) to
assure the protection rating in a hazardous location.

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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Please read operation manual and wiring diagram carefully before installation.
Verify that supply voltage is in accordance with the data on nameplate to prevent
short circuit or electrical/electronic parts damage caused by incorrect power input.
Turn power off before wiring or maintenance.
There are grounding devices both inside and outside of the actuator and the ground
wires should be connected properly.
The metal plugs in conduit entries are for transit only. For long term protection fit
suitable flameproof cable gland and power cable should be with a minimum
withstand temperature105 °C (221°F). Please refer to 1.2.3 (P.3).
To avoid functional failure caused by static, do not touch any components on the
PCB with metal tools or bare hands.
Do not parallel wire multiple actuators together without using an extra relay.
Use suitable explosion-proof and water-proof cable glands to ensure it fits the
conduit entry size, diameter of the cable and the enclosure protection of the actuator
when wiring. The explosion-proof and water-proof cable glands must be tightened
and flattened to the cable after wiring procedure. Do not remove the
explosion-proof and water-proof metal plugs from unused conduit entry, be sure to
fasten the top cover of the actuator to reach explosion-proof and water-proof
function.
Actuator should be installed in an upright or horizontal position. Do not mount
upside down or below a horizontal position.
Periodically inspect actuator enclosure to prevent dust from accumulating.
Perform below inspections prior to installation. Not allowed to adopt if any item is
unqualified.
Check the marking and certificate number to see if it conforms to the indicated
application.
All the parts of the housing are assembled in the right manner and fastened.
USE FASTENERS WITH YIELD STRESS ≥ 700MPa.
All the explosion-proof parts should be made without cracks or functional
defects.

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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CSA Certification Considerations1.2.2
KEEP COVER TIGHT WHILE CIRCUITS ARE ALIVE.
AFTER DE-ENERGIZING, DELAY 10 MINUTES BEFORE OPENING
THE COVER.
SEAL REQUIRED WITHIN 18 INCHES (450 mm) OF ENCLOSURE (for
Divisions only).
SEAL REQUIRED WITHIN 2 INCHES (50 mm) OF ENCLOSURE (for Zones
only).
Cable Glands1.2.3 Please select the relatively explosion-proof cable connector according to the
product specifications and Loctite 577 sealant is recommended for NPT cable
glands to achieve IPrating.
ATEX / UKCA / IECEx / TIIS / TS Certification：
The actuator is delivered with two conduit entries plugged by metal
plugs. Use cable glands with ATEX / UKCA / IECEx / TIIS / TS
certification and in accordance with the technical characteristics
required by Ex db IIB Gb, Ex tb IIIC Db. The electrical supply cable
must be suitable for power rating and with a minimum withstand
temperature 105 °C (221 °F).
CNEx / CCC Certification：
The actuator is delivered with two conduit entries plugged by metal
plugs. Use cable glands with CNEx certification and in accordance
with the technical characteristics required by CNEx Ex db IIB
Gb, Ex tD A21 IP68. The electrical supply cable must be suitable
for power rating and with a minimum withstand temperature 105 °C
(221 °F).
CSACertification：
The actuator is delivered with two conduit entries plugged by metal
plugs. Use cable glands with CSA certification. The electrical
supply cable must be suitable for power rating and with a minimum
withstand temperature 105 °C (221 °F).
1.3 Working Conditions
ATEX / UKCA / IECEx / TIIS / CNEx / CCC / TS Certification：
Atmospheric pressure：80 - 110 kPa.
Ambient temperature：- 30 °C to + 70 °C (- 22 °F to + 158 °F).
Relative humidity：Not more than 95 % (+ 25 °C / 77 °F).
The actuator can operate normally within tolerated variation of ± 10% of rated supply.
voltage or ± 1% of rated frequency.

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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CSACertification：
Atmospheric pressure：80 - 106 kPa.
Ambient temperature：-30 °C to +70 °C (-22 °F to +158 °F).
Air with normal oxygen content：21 % (Volume).
1.4 Standards
ATEX European Hazardous Area：EN60079-0, EN60079-1, EN60079-31
Directive
Group
Ambient Temperature
ATEX II 2 GD
Ex db IIB T4 Gb
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
ATEX II 2 GD
Ex tb IIIC T130 °C Db
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
UKCA Great Britain Hazardous Area ：EN60079-0, EN60079-1, EN60079-31
Directive
Group
Ambient Temperature
UKCA II 2 GD
Ex db IIB T4 Gb
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
UKCA II 2 GD
Ex tb IIIC T130 °C Db
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
IECEx International Hazardous Area：IEC 60079-0, IEC 60079-1, IEC60079-31
Group
Ambient Temperature
Ex db IIB T4 Gb
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
Ex tb IIIC T130 °C Db
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
CSA North American Hazardous Area：
Zone System：
CAN/CSA-C22.2 No. 0-20, CAN/CSA-C22.2 No. 60079-0, CAN/CSA-C22.2 No.
60079-1, CAN/CSA-C22.2 No. 60079-31, UL 60079-0, UL 60079-1, UL 60079-31
Code
Hazard
Class
Permitted
Zone
Type of
Protection
Groups
Temp
Classification
Ambient Temperature
AEx / Ex
I
1
db
IIB, IIA
T4
- 30 °C to + 70 °C
( - 22 °F to + 158 °F )
AEx / Ex
II
21
tb
IIIC, IIIB,
IIIA
T130°C
- 30 °C to + 70 °C
( - 22 °F to + 158 °F )

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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Division System：
CAN/CSA-C22.2 No. 0-20, CSA C22.2 No. 30-M1986, CSA C22.2 No. 25-17,
FM 3600, FM 3615, FM 3616
Hazard
Class
Permitted
Division
Groups
Temp
Classification
Ambient Temperature
I
1
C,D
T4
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
II
1
E,F,G
T130°C
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
CNEx / CCC Certification：GB3836.1, GB3836.2, GB12476.1, GB12476.5
Group
Ambient Temperature
Ex d IIB T4 Gb
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
Ex tD A21 IP68 T130°C
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
TS Certification：CNS3376-0, CNS3376-1, IEC 60079-0, IEC 60079-1, IEC60079-31
Group
Ambient Temperature
Ex db IIB T4 Gb
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
Ex tb IIIC T130°C Db
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
TIIS Japanese HazardousArea：JNIOSH-TR-46-1,JNIOSH-TR-46-2,JNIOSH-TR-46-9
Group
Ambient Temperature
Ex db IIB T4 Gb
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )
Ex tb IIIC T130°C Db
- 30 °C to + 70 °C ( - 22 °F to + 158 °F )

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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1.5 Inspection, Storage, Transport
Receiving / Inspection1.5.1
Carefully inspect the package for any damages resulting from shipping and report
all damages to the freight carrier and seller.
After unpacking the product and information packet, please keep the cartons
and any packing materials in case of product return or replacement. Verify that
the items listed in packing slip or in bill of lading are the same as what were
ordered. If there is any discrepancy, please contact the seller.
Verify that the technical data on nameplate is in accordance with what was
ordered.
Storage1.5.2
The actuator should be stored in a dry area with relative humidity of less than 90
%（20 ± 5 °C）and at temperature between -20 °C to + 40 °C (-4 °F to + 104 °F).
The product shall be stored with suitable protection from corrosive substance that
can damage the metal and insulating parts.
The metal plugs for temporary protection should not be removed until the
actuator is ready to be cabled. Use suitable flameproof cable glands to ensure IP
rated protection when installing. Please refer to 1.2.3 (P.3).
Transport1.5.3
Attach ropes or hooks for the purpose of lifting by hoist only to housing and not to
handwheel.
Actuators packaged in cartons can stand up to land, sea, or air transportation.
Packaged actuators shall avoid of violent impact and strong vibrations and be
protected from rain or snow.
Lubrication1.5.4
The gear train has been sufficiently lubricated at the factory. No additional
lubrication is required.

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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2Product Overview
OME series explosion-proof quarter-turn electric actuators are structured as flame-proof and
combustible dust-proof and offer torque ranges from 35 Nm to 1,500 Nm ( 310 in.lb to 13,280
in.lb). Product design is based on a self-locking worm drive principal, which provides for a smooth
running, dependable, robust drive system. All models are ISO 5211 compliant, have a visual position
indicator on top of actuator cover and manual override except OME-A. The manual operation is
non-clutch design that can be operated without any lever, clutch or brake upon power outage.
ATEX / UKCA / IECEx / TIIS / CNEx / TS Explosion-proof instructions：
OME series Explosion-proof Quarter-turn Electric Valve Actuator (referred as "actuator")
is a control device for valves and can be used in the places, where is classified as Zone 1 or
Zone 2, contained GroupⅡA and GroupⅡB gases, Zone 21 or Zone 22, contained the
combustible dust atmosphere or the mixture circumstance with the explosive gas
atmospheres and the combustible dust atmospheres. Temperature group T1-T4.
Certificate Number：
Sira17ATEX1243X
IECEx SIR17.0062X
CNEx17.2492X (CCC: 2020312307000188)
(ITIR) 2018 No.07-00013X
CSAE 21UKEX1207X
CSAUK 21JPN036X (TIIS - Gas)
CSAUK21JPN037 (TIIS - Dust)
CSA explosion-proof instructions：
Division System where is classified as North American Division 1 or Division 2 of
hazardous location, contains Group C and Group D gases and temperature group T1 - T4;
or contains one or several flammable dusts with minimum flaming point over 130 °C; or
include both above flammable gases and dusts.
Zone System where is classified as North American Zone 1 or Zone 2 of hazardous
location, contains Group ⅡA and Group ⅡB gases and temperature group T1 - T4; or in
Zone 21 or Zone 22, contained one or several flammable dusts with the minimum flaming
point over 130 °C; or include both above flammable gases and dusts.
Certificate Number：
70156877

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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2.1 Features
Enclosure conforms to the following standard:
ATEX / UKCA / TS / CNEx / CSA / TIIS: IP68 (7 m / 72 hrs)
IECEx: IP66 (available for OME-1, OME-A and OME-AM)
IP68 (7 m / 72 hrs)
Self-locking gear system.
ISO 5211 mounting flange.
Flatted position indication.
Mechanical stops (except OME-1 / A / AM).
Clutch-less manual override.
Built-in thermal protection.
3Product Mechanical Data
3.1 Parts Identification
Actuator Top Cover
Top Cover Screw
Position Indicator
Casting End Cap
Handwheel
Nameplate
Mechanical End Stops
Conduit Entries Flamepath Joint

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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3.2 Technical Information
Model
Torque
Weight
Moto Power
Manual Override
Flange Type
Nm
inlb
kg
lb
Watt
ISO 5211
OME-1
35
310
2
4
10
Lever
F03 / F05
OME-AM
50
445
3
7
10
F07
OME-A
50
445
3
7
10
N/A
F07
OME-2
90
800
18
40
40
Handwheel
F07
OME-3
150
1330
18
40
40
F07
OME-4
400
3540
32
71
80
F10
OME-5
500
4430
32
71
80
F10
OME-6
650
5755
32
71
80
F10
OME-7
1000
8855
46
101
120
F12 or F14
OME-8
1500
13280
46
101
120
F12 or F14
3.3 Mounting Base Details
Model
Flange Type
Shaft (A)
Depth of Shaft (B)
ISO 5211
mm
inch
mm
inch
OME-1
F03 / F05
14
0.551
17
0.669
OME-A
F07
17
0.669
20
0.787
OME-AM
F07
17
0.669
20
0.787
OME-2 to OME-3
F07
22
0.866
30
1.181
OME-4 to OME-6
F10
36
1.417
48
1.889
OME-7 to OME-8
F12 or F14
36
1.417
50
1.968

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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3.4 Actuator Selection
OME- ❶-❷-❸-❹
3.5 Sizing
a. The actuator shall be sized to ensure that its torque output meets the load requirements of
valve and its ability to overcome the required duty cycle of application (As a MINIMUM,
a 30% safety factor is suggested for the calculation of torque requirement).
If the maximum torque of 5” valve is 80 Nm 80 × 1.3 (safety factor) = 104 Nm
104 Nm < 150 Nm (OME-3) OK!
104 Nm > 90 Nm (OME-2) Not OK!
b. In cases where the actuator does not fit directly onto the valve, a mounting kit is required.
Please ensure the bracket and coupling are properly designed and manufactured to
with stand the torque output of the actuator.
❶Type
A
AM
1
2
3
4
5
6
7
8
❷Voltage
D12 : 12 V DC
24 : 24 VAC
D24 : 24 V DC
120 : 110 - 120 VAC 1PH
220 : 220 - 240 VAC 1PH
❸Control Mode
F：Floating
M：Modulating
❹Duty cycle
30：30 %
75：75 %

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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3.6 Duty Cycle
The standard duty cycle for OME series is 30% or 75% is for option. The duty cycle is
the relationship between the running time and resting time. It is calculated as below:
Duty Cycle = x100 %
Rest Time (Sec)=
If the running time for OME-2 is 15 sec, 30% duty cycle, the rest (off) time shall be
calculated as below:
15 × [ ( 1–30%) / 30% ] = 35 The rest time will be 35 sec.
If the running time for OME-2 is 15 sec, 75% duty cycle, the rest (off) time shall be
calculated as below:
15 × [ ( 1–75%) / 75% ] = 5 The rest time will be 5 sec.
Note: For higher duty cycles, choose the 75% duty cycle.
One cycle consists of open-rest-close-rest.
Running Time (Sec)
Running Time (Sec) +Rest Time (Sec)
Running Time (Sec) x (1- Duty Cycle)
Duty Cycle

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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3.7 Flamepath Joint
During cover removal and conduit entry removal, ensure that surfaces are free from
scratches or scrapes.
Actuator installation and maintenance must be performed by trained personnel.
Cover Removal
Remove the conduit entry metal plugs to relieve the pressure inside the actuator for the ease
of the top cover removal and gently remove the cover. DO NOT attempt to remove the top
cover with a screwdriver as it will damage the surfaces.
Cover Installation
Please ensure that the O-ring seal is in good condition prior to cover installation.
Slowly re-install the cover while being careful not to pinch the O-ring seal.
The explosion-proof enclosures are labeled with a QAcode on both of the middle
plate and the cover, please verify the QA code inside the cover is the same as the one
on middle plate when installation. The cover is not interchangeable.
Please follow this table to tighten the cover screw:
Model
Screw
Allen Key
Torque
mm
Nm
OME-A, OME-AM & OME-1
M6
5
8
OME-2 to OME-3
M10
8
43
OME-4 to OME-8
M12
10
75
Top Cover
Flamepath Joint
Main Housing
Flamepath Joints
Conduit Entries
Flamepath Joint
O-ring
Explosion-proof
Metal Plug
Top Cover Screw

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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3.8 Nameplate Details
Please make sure the explosion-proof specification for the product is consistent with
nameplate and instruction.
Nameplate Indication
❶Model No.
❷Running Time
❸Torque
❹Enclosure Rating
❺Motor Power
❻Supply Voltage
❼Rated Current
❽Serial No.
❾Date of Manufacture
❿Ambient Temp.
⓫Warning
ATEX、UKCA and IECEx
TS
❶
❷
❸
❹
❺
❻
❼
❽
❾
⓫
CSA
❶
❷
❸
❹
❺
❻
❼
❿
❽
❾
⓫
❶
❷
❸
❹
❺
❻
❼
❽
❾
⓫
CNEx and CCC
❶
❷
❸
❹
❺
❻
❼
❽
❾
⓫
TIIS - Gas
TIIS - Dust
❶
❷
❸
❹
❺
❻
❼
❽
❾
⓫
⓫
❶
❷
❸
❹
❺
❻
❼
❽
❾

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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4Mounting And Setup (OME-2 to OME-8)
4.1 Manual Device Installation
a. Pass the screw through the handle and tighten the nut onto handwheel.
Do not overtighten.
b. Secure the handle to the wheel with the slotted screw and tighten the locknut all the way
down to the wheel. Ensure that the locknut is locked between the wheel and the handle.
Leave a 2 mm gap between the locknut and the handle as the figure below to allow
the handle free to rotate and then to have a smooth manual operation.
c. Slide fixing screw through washers and handwheel and secure them to override shaft as
shown in the figure below.
Turn off power when installing handwheel.
d. Assembly completed as shown in the
figure below.
Min. 2mm

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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Handwheel
Actuator Driver
4.2 Valve Mounting Instructions
a. Make sure both the valve and actuator are in the same position before mounting, either
fully-open or fully-closed. If not, use the manual override to correct this.
b. Once mounted together, either directly or with a mounting kit, ensure that they are
properly secured together and all fasteners are tightened.
Remove all of valve handle parts, for example, the handle or open/close
mechanical stops so as to not interfere with the actuator.
c. Check again that the valve and actuator are in the same position.
d. Remove the conduit entry plug to relieve the pressure inside the actuator for the ease of the
top cover removal and gently remove the cover, please refer to 3.7 (P.11) for cover
installation.
The power must be off before removing the cover.
AFTER DE-ENERGIZING, DELAY 10 MINUTES BEFORE OPENING THE
COVER.
e. Refer to section 4.3 (P.16) for wiring notices and connect the wires according to the wiring
diagram labeled inside the cover of actuator.
f. Supply power to actuator.
Care must be taken at all times as there are live circuits present that may cause
electrical shock.
g. Re-calibration may be required for the end positions, refer to 4.4 (P. 17)
for further instructions.
h. For modulating units, refer to section 6 (P.24 - P.32) for setting
instructions.
Use the insulated wires and length should be less than 30 m.
A minimum of 18 AWG wire is recommended for all field
wiring.
Turn power off before changing any settings.
i. Assemble the cover and secure cover screws firmly after setting.
Refer to 3.7 (P.11) for installation and check if there is any foreign object
between top cover flamepath joint and base.
Please ensure that the O-ring seal is in good condition prior to cover installation.
The explosion-proof enclosures are labeled with a QAcode on both of the middle
plate and the cover, please verify the QA code inside the cover is the same as the
one on middle plate when installation. The cover is not interchangeable.

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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4.3 Wiring Instructions
Turn power off before making the electrical connection!
There are grounding devices both inside and outside of the actuator (green screw) and the
ground wires should be connected properly.
The conduit entries are attached two conduit entries plugged by metal plugs, and the
specification as below. Each actuator is attached with two metal plugs to conduit entries.
OME-A, OME-AM and OME-1: 1/2”NPT, M20.
OME-2 to OME-8: 3/4”NPT, 1/2”NPT, M20, M25.
Use correct size of fittings so as to not damage the threads.
Verify the supply power is in accordance with the data on the nameplate to prevent a
short circuit and an electrical shock.
Do not apply power to actuator before wiring, otherwise it can cause an
electrical shock or damage components of the actuator.
After wiring, please tighten the conduit entries with suitable cable glands and cover
properly. Unused conduit entries have to be sealed with metal plugs to reach explosion-
proof function. Please refer to 1.2.3 (P.3).
Relating to OME series with TIIS explosion-proof certification, it is mandatory
to select the cable gland of A2F series made by CMPProducts Ltd to meet TIIS
explosion-proof standards.
Loctite 577 sealant is recommended for NPT metal plugs or cable glands to
achieve IPrating.

【OME Series】Explosion-proof Quarter-turn Valve Actuator
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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:
Instructions4.4.1
The travel cams are set to control the open and closed position of the valve. See
below procedure for corresponding actuator model:
OME-1, OME-A and OME-AM：The position is set to stop the travel of the actuator
when the travel cams activate the limit switch.
OME-2 to OME-8：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).
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.
【OME-1, OME-A, OME-AM】
【OME-2 ~ OME-8】

【OME Series】Explosion-proof Quarter-turn Valve Actuator
18
Adjustment Steps4.4.2
a. Turn power off.
b. Loosen the locknut and unwind both Open and
Close Mechanical end stop screws based on the
actuator model listed below.
OME-2 to OME-6: 25 turns
OME-7 to OME-8: Remove the mechanical end
stop screws completely.
c. For modulating units, loosen the M5 set screw on the sector gear or round gear.
d. Adjust the fully-open position
OME-A is not available for the manual device setting.
1. Use the manual override to turn the valve to the fully-open position.
2. Remove the cover.
OME-1, OME-A and OME-AM: Loosen the M5 set screw of cam TC1 with
a 2.5 mm Allen Key.
OME-2 to OME-8: Loosen the M3 set screw of cam TC1 with a 2.5 mm
Allen Key.
3. Adjust the travel cam based on the corresponding actuator model below:
OME-A and OME-AM
Rotate the cam TC1 clockwise to contact the switch arm.
Slowly rotate the cam TC1 clockwise until a light click is heard.
OME-1
Rotate the cam TC1 counter-clockwise to contact the switch arm.
Slowly rotate the cam TC1 counter-clockwise until a light click is heard.
OME-2 to OME-8
Rotate the cam TC1 counter-clockwise to contact the switch arm.
Slowly rotate the cam TC1 counter-clockwise until a light click is heard.
4. Securely tighten the M5 / M3 set screw and apply power to check if the
fully-open position is correct. If it is not correct, please repeat steps 1 to 3.
Do not remove the cover to supply power if the actuator is located in a
hazardous environment. If so, please operate the unit manually.
5. Use the same method to reset the cam TC3.
Adjust cam TC3 so it trips just before cam TC1 does.
Sector Gear
Set Screw M5
Round Gear
Set Screw M5
【OME-1, OME-Aand OME-AM】
【OME-2 to OME-8】
【Close】
【Open】
Mechanical End Stop