HKC HQ Series Instruction manual

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 1 / 26 Valve Automation Leader, HKC
HQ Series Quarter-turn Electric Actuator
Installation, Operation & Maintenance Manual
Address : 26, Emtibeui 28-ro, Siheung-si, Gyeonggi-do, (15119) Republic of Korea
Tel : [phone], Fax : [phone], Home page : www.hkcon.co.kr, email : [email protected]

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 2 / 26 Valve Automation Leader, HKC
Contents
1. Introduction .............................................................................................................................................. 3
1.1. Purpose................................................................................................................................................................... 3
1.2. Safety Notices ....................................................................................................................................................... 3
2. Product Identification .............................................................................................................................. 3
2.1. Product Identification .......................................................................................................................................... 3
2.2. Initial Inspection ................................................................................................................................................... 4
2.3. Storage ................................................................................................................................................................... 4
3. General Information and Features ........................................................................................................ 5
3.1. General information ............................................................................................................................................. 5
3.2. External Parts for Standard Models .................................................................................................................. 7
3.3. Internal parts for standard model ..................................................................................................................... 7
4. Installation ................................................................................................................................................ 7
4.1. Pre-installation ...................................................................................................................................................... 7
4.2. Actuator Mounting ............................................................................................................................................... 8
4.3. Limit Switch Setting ............................................................................................................................................. 9
4.4. Torque Switch Setting ......................................................................................................................................... 9
4.5. Counter-Clockwise to Close Setting .................................................................................................................. 9
4.6. Mechanical Travel Stop Adjustment ................................................................................................................. 9
4.7. Setting Potentiometer (Replacement and Setting) ..................................................................................... 10
4.8. Current Position Transmitter – CPT (Optional) ............................................................................................ 10
4.9. Proportional Control Unit ................................................................................................................................ 11
4.10. [ac/dc Multi-board --- 16 Rev1] ..................................................................................................................... 17
5. [Apply for optional communication protocol ...................................................................................... 17
5.1. ProfiBus Controller (PBC) ................................................................................................................................. 17
5.2. ModBus Controller ............................................................................................................................................ 18
6. Wiring ...................................................................................................................................................... 19
6.1. Electrical Connections and Preliminary Test ................................................................................................. 19
7. Maintenance ........................................................................................................................................... 20
7.1. Maintenance ....................................................................................................................................................... 20
7.2. Tools .................................................................................................................................................................... 20
8. Trouble Shooting ................................................................................................................................... 20
8.1. The actuator does not respond ...................................................................................................................... 20
8.2. The actuator is supplied with power but does not operate ...................................................................... 20
8.3. Actuator runs erratically ................................................................................................................................... 21
8.4. Optional Equipment(s) ...................................................................................................................................... 21
9. Installation and Maintenance Tips ....................................................................................................... 21
Appendix I: HQ series Coding System ........................................................................................................ 22
Appendix II: Wiring Diagram......................................................................................................................... 23
Appendix III: Grounding ................................................................................................................................ 26

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 3 / 26 Valve Automation Leader, HKC
1. Introduction
1.1. Purpose
The purpose of this manual is to introduce and explain the installation, operation and maintenance of
HQ-series electric actuators. This IOM Manual is distributed as a hard copy when delivered the ordered
products to customer.
1.2. Safety Notices
Safety notices in this manual outline precaution the user must take to reduce the risk of personal injury
and damage to the equipment. The user(s) must read these instructions before the installation, operation
or maintenance of HQ-series electric actuators.
DANGER: Refers to personal safety and alerts the user to danger or harm.
The hazard or unsafe practice will result in severe injury or death.
WARNING: Refers to personal safety. Alerts the user to potential danger.
Failure to follow warning notices could result in personal injury or death.
CAUTION: Directs the user’s attention to general precautions that, if not followed, could result in
personal injury and/or equipment damage.
Notes: Highlighted information is critical to the user’s understanding of the actuator’s installation
and operation.
2. Product Identification
2.1. Product Identification
[The actuator name sticker is located on the opposite side of the cable entry. Stainless steel name plate
for explosion proof types are attached on top of the cover. The name plate contains the following: -21 r0]
2.1.1. Marking
① [General
HQ logo (trade mark),
Model, Electrical power
supply, Type, Rated
current, Torque,
Serial No., Operating time
(seconds) and Option. ---
-- 20 Rev0]
② [Flameproof for CSA, Flameproof & Dust Ignition Proof for IECEx/ATEX, KCs, CCC --- 21 rev2]
③ [Flameproof for CSA, and EAC ------ 18 Rev0]

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 4 / 26 Valve Automation Leader, HKC
2.1.2. Applied Standard
① [IEC60079-0:2011(Ed.6 +IS01, EN60079-0:2012 +A11
② IEC60079-1:2014-06 (Ed.7), EN60079-1:2014
③ IEC60079-31:2013(Ed.2), EN60079-31:2014 ----- 17 Rev0]
2.1.3. Certification
① [IECEx: for HQ-008 ~ HQ-300 with LCU, IECEx DEK 16.0042X
Ex db IIB T4 Gb, Ta -20℃ to +60℃, Ex tb IIIC 135℃ Db
② ATEX: for HQ-008 ~ HQ-300 with LCU, DEKRA 16ATEX0083 X, CE 0344
II 2 G Ex db IIB T4 Gb, Ta -20℃ to +60℃, II 2 D Ex tb IIIC 135℃ Db ----- 18 Rev0]
③ [KCs Ex d IIB T4, -20℃ ~ +60℃:
for HQ-008/010, 제 2020-BO-0016 호, for HQ-015/020, 제 2020-BO-0017 호,
for HQ-030~060, 제 2020-BO-0018 호, for HQ-080~300, 제 2020-BO-0019 호
KCs Ex tD A21 IP6X T135℃, -20℃ ~ +60℃:
for HQ-008/010, 제 2020-BO-0012 호, for HQ-015/020, 제 2020-BO-0013 호,
for HQ-030~060, 제 2020-BO-0014 호, for HQ-080~300, 제 2020-BO-0015 호 – 20 Rev0]
④ CCC: for HQ-008 ~ HQ-300 with LCU, CNEX 2021 3123 0700 0205
Ex d IIB T4 Gb, Ta -20℃ to +60℃, Ex tD A21 IP6X T135℃ ----- 21 Rev2]
[Notes :
Sealing devices must be used and shall be fitted directly at enclosure wall when using conduit.
[Cable glands shall be suitable for the environment and shall be certified as flameproof (Ex db)
and/or dust ignition proof (Ex tb) if used in Zone 1 or Zone 21 application. --- 17 rev 1]
Cable glands and conduit to be installed minimum 6 full threads and the length of thread is
minimum 8mm.
Temperature of cable entry is maximum 100℃. Heat resistance wire is recommended when you
install for flame proof and/or dust ignition proof.
Ex db flame proof and/or dust ignition proof Ex tb certified cable gland shall be used with 100’C
application. --- 17 rev1]
[All information about the material and the allowance of LCU fasteners
 Fasteners with yield strength ≥ 210MPa (stainless steel)
 Bolts type : M5*0.8, M6*1, M8*1.25, M10*1.5, M12*1.75 (Tolerance Fit 6g) ---17 rev0]
Cable connection : Refers to the Appendix Ⅱ (Wiring Diagram)
For cable entries or conduit entries that are not used, user or installer shall close by certified blanking
elements(stopping plugs) so that the flameproof or dust ignition proof properties of the enclosure
are maintained.
Always ground the enclosure in accordance with local electric codes. The most effective enclosure
grounding method is a direct connection to earth ground with minimal impedance. Methods for
grounding the enclosure include:
Internal ground connection : The internal ground is located in the terminal block #1. Refer to the
enclosed wiring diagram.
External ground connection : The ground lug is located on the center of cable entries.
▶For more information, refer to the Appendix Ⅲ (Grounding) ------- 15 Rev1]
[Stainless steel name plate for the flame proof and dust ignition proof type shall be permanently
attached by rivets or screw on the cover, EAC certified products shall be attached on side of body
using rivets.----- 20 Rev0]
2.2. Initial Inspection
Upon on the receipt of the actuator, the user should inspect the condition of the product and ensure
that product specification stated in the name plate matches with the order sheet.
2.2.1. Remove the packing wrap or wooden box carefully. Inspect the product for any physical damage
that may have occurred during shipment.
2.2.2. Check the product specification with product ordered. If a wrong product has been shipped,
immediately report to our coordinator.
2.3. Storage
Actuators must be stored in a clean, cool and dray area. The unit should be stored with the cover
installed and the cable entry openings sealed. Storage must be off the floor, covered with a sealed dust
protector. When actuators are to be stored outdoor, they must be stored off the ground, high enough to
prevent from being immersed in water or buried in snow.

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 5 / 26 Valve Automation Leader, HKC
3. General Information and Features
3.1. General information
HKC HQ-series electric actuators are designed for the operation of industrial valves; e.g. butterfly valves
and ball valves. The actuator torque outputs range from 40 Nm to 8,830 Nm (350 In-Lbs to 78,120 in-
Lbs). Currently 19 models are available. [In case of explosion proof or dust ignition proof type, the rated
current may be different due to the difference in the approved data, so please contact HKC. –--21 r0]
3.1.1. Standard technical data
HQ
(Model)
Max.
output
torque
Operating
time(sec)
50/60Hz
Max
bore
size
Rated current (A, tolerance ±10%), (50/60 Hz) Duty
rate
No. of
handle
turn
Weight
DC AC, 1 phase, 50/60 Hz AC, 3 phase, 50/60 Hz
kgf.m 90° Ømm 24 100 110 200 220 240 50Hz 380 440 460 S4(%) n kg
HQ-004 4 12 / 12 11 0.5 0.2 / 0.2 0.1 / 0.1 0.2 / 0.2 0.1 / 0.1 - NA NA4 NA5 70 8 1
HQ-005 5 11 / 11 14 1 - 0.1 / 0.1 - 0.1 / 0.1 - - - - 70 10 3
HQ-006 6 14 / 12 14 1.7 0.5 / 0.5 0.4 / 0.4 0.3 / 0.3 0.2 / 0.2 0.2 NA NA NA 35 8 3
HQ-008 8 16 / 13 20 3.7 1.3 / 1.3 1.2 / 1.1 0.7 / 0.6 0.6 / 0.6 0.7 0.2 / 0.3 0.6 / 0.4 NA 70 10 7
HQ-010 10 20 / 17 20 4 1.3 / 1.3 1.2 / 1.1 0.7 / 0.7 0.7 / 0.6 0.7 0.2 / 0.3 0.6 / 0.4 NA 70 10 7
HQ-015 15 25 / 21 22 5.3 2.4 / 2.2 2.1 / 2.0 1.1 / 1.1 1.0 / 1.0 1 0.6 / 0.4 0.6 / 0.4 0.6 / 0.4 70 11 17
HQ-020 20 25 / 21 22 6.5 2.5 / 2.3 2.2 / 2.1 1.2 / 1.2 1.1 / 1.1 1.1 0.7 / 0.5 0.6 / 0.4 0.6 / 0.4 70 11 17
HQ-030 30 31 / 26 35 8.6 2.3 / 2.7 2.1 / 2.4 1.1 / 1.4 1.0 / 1.3 1.1 0.6 / 0.5 0.4 / 0.3 0.4 / 0.3 70 13.5 22
HQ-050 50 31 / 26 35 12.8 3.6 / 4.6 3.3 / 4.2 1.9 / 2.1 1.7 / 1.9 1.3 0.9 / 0.8 0.8 / 0.5 0.7 / 0.5 70 13.5 23
HQ-060 60 31 / 26 35 NA 3.8 / 4.9 3.4 / 4.4 2.1 / 2.3 1.9 / 2.0 1.3 1.0 / 0.9 1.4 / 0.9 1.3 / 0.9 70 13.5 23
HQ-080 80 37 / 31 45 NA 6.0 / 6.3 5.4 / 5.7 2.9 / 3.1 2.6 / 2.8 2.6 1.3 / 1.0 1.7 / 0.9 1.6 / 0.9 70 16.5 29
HQ-120 120 37 / 31 45 NA 7.2 / 7.6 6.5 / 6.9 3.1 / 3.3 2.8 / 3.0 2.9 1.5 / 1.1 1.8 / 1.0 1.7 / 0.9 70 16.5 29
HQ-200 200 37 / 31(1) 65 NA 6.0 / 6.3 5.4 / 5.7 3.4 / 3.3 3.1 /3.0 3.1 1.4 / 1.0 1.7 / 1.0 1.6 / 0.9 50 49.5 75
HQ-270 270 56 / 47(1) 65 NA 7.0 / 7.4 6.3 / 6.7 3.5 / 3.4 3.2 / 3.1 3.2 1.5 / 1.1 1.8 / 1.0 1.7 / 0.9 50 49.5 75
HQ-300 300 112 / 93 65 NA 7.2 / 7.6 6.5 / 6.9 3.1 / 3.3 2.8 / 3.0 2.9 1.5 / 1.1 1.8 / 1.0 1.7 / 0.9 50 49.5 75
HQ-350 350 39 / 33 75 NA 24.9 / 19.2 22.6 / 17.4 12.4 / 9.5 11.2 / 8.7 11.2 4.2 / 3.0 3.8 / 2.6 3.6 / 2.5 40 42 75
HQ-400 400 58 / 49 75 NA 24.9 / 19.2 22.6 / 17.4 12.4 / 9.6 11.2 / 8.7 11.3 4.2 / 3.0 3.8 / 2.6 3.6 / 2.5 40 42 75
HQ-600 600 78 / 66 110 NA 16.3 / 11.6 14.8 / 10.5 9.9 / 7.0 9.0 / 6.3 - 3.6 / 3.3 2.1 / 1.8 2.0 / 1.7 40 84 215
HQ-900 900 117 / 99 110 NA 16.3 / 11.6 14.8 / 10.5 9.9 / 7.0 9.0 / 6.3 - 3.6 / 3.3 2.1 / 1.8 2.0 / 1.7 40 84 215
Note :Technical data of above may be changed without pre-notice.
[(1) Operating time of 110V ac 1ph is applied 112/93.
(2) Above data shall be applied separately for Explosion proof type actuators in accordance
with relevant approval certificate --- 19 Rev1]
[(3) Delete HQ-800, 1000, 1100 models --- 20 r0]
3.1.2. Hand Wheel and Declutching
HQ-series actuators are provided with a declutchable manual override
system.
① In order to manually operate the actuator, pull the manual override
engagement level towards the hand-wheel until it remains in position.
② Turn the hand-wheel until the valve reaches the required position.
③ Turn clockwise to close and counter-clockwise to open.
3.1.3. Additional standard technical data
Enclosure Rat
ing
Ingress protection
IP67, NEMA 4
,4X
& 6
Enclosure
High grade aluminium alloy,
Anti
-
corrosion coated
Motor
Squirrel caged induction motor
Limit Switches
2 x open/close SPDT, 250 V
ac
16A rating
Auxiliary Limit Switches
2 x open/close SPDT, 250 V
ac
16A rating
[
(except HQ
-
008
/010
)
-
1
7
R
0
]
Torque
Switches
Open/close SPDT, 250V
ac
1
6
A Rating
[
(except HQ
-
008
/010
)
-
1
7
R
0
]
Stall Protection
Built
-
i
n thermal protection
Travel Angle
90 degree +/
-
10%
Indicator
Continuous position indicator
Self
-
Locking
By means of worm gear
Mechanical Travel Stops
2 x
external adjustable mechanical travel stops
Cable
Entries
[
2xNPT 3/4”
,
2xM25
for Ex db, additionally M20, M25 and NPT3/4
”
with
M
30
adaptor
for E
x tb.
(
by u
ser selection)
----
17 Rev0
]
Lubrication
Grease moly EP which will be almost permanently lubricated
. However,
periodical preventive maintenance will extend the operating life
Ambient Temperature
-
20 ℃~ + 60 ℃(except on CPT & PCU board )
External Coating
Dry powder polyester
coating, [max thickness 2mm for Ex tb application
---- 17r1]

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 6 / 26 Valve Automation Leader, HKC
3.1.4. Optional technical data
EX
D
Flame
proof enclosure
IECEx, ATEX, CSA, KCs
, [EAC
-----
20
Rev0]
EXTB
Dust Ignition proof enclosure IECEx, ATEX, KCs
, [EAC
-----
20
Rev0]
WTA
Watertight enclosure (IP68 10m / 72hr)
PIU
Potentiometer unit (0~1KΩ)
PCU
Proportional
control unit (input, output 0~10 V
dc
, 4~20mA
dc
)
ATS
Additional torque switches (SPDT X 2
ea
250V
ac
16A Rating)
SICU
[
Semi
-
Integral control unit(LCU
-
B
+IMS+phase protect indicator)
(5W max)
ICU
Intelligent
d
igital control unit(LCU
-
C
+IMS+auto phase
discriminator)
(5W max)
–
1
8
Rev
1
]
CPT
Current position transmitter(output 4~20mA
dc
)
EXT
Extension 120°,180°, 270° turn
ALS
Additional limit switches (SPDT X 2
ea
,
250 V
ac
,
16A Rating)
LPA
Lever plate actuator
SLU
Signal lamp unit(white: power on,
red: open, green: close, yellow: over torque)
[PRB
Profibus ( 5 V dc, 0.1 A max, if redundancy is multiply 2 )
MOB
Modbus (5 V dc, 0.1 A max, if redundancy is multiply 2 )
---
18 Rev1]
FPA1
Fire proofing actuator
, 50 minutes at
1
,
050 ± 5
℃
FPA2
Fire
proofing actuator
, 150 minutes
at
250 ± 5
℃
3.1.5. Duty Cycle *1
[Duty cycle data were indicated Clause 3.1.1 Standard Technical Data.--- 16 Rev1]
Exceeding the actuator’s rated duty cycle may cause thermal overload.
Note *1 Type of duty according to VDE 0530 / IEC 60034-1
Short – time duty S2 Intermittent duty S4
The operation time at a constant load is
short, so that thermal equilibrium is not
reached. The pause is long enough for the
machine to cool down to ambient
temperature. [Example, the duration of the
short –time operation is limited to 15min ----
--- 15 Rev0]
The duty is a sequence of identical cyc
l
es which
consist of starting time, operation time with
constant load and rest period. The rest period
allows the machine to cool down so that thermal
equilibrium is not reached. [Example, the relative
on-time at S4-25% or S4-50% is limited to 25% and
50% respectively. ----- 15 Rev0]
3.1.6. Space Heater
Condensation in the actuator is possible due to wide fluctuation of the ambient temperature. The
heater integrated in the control unit prevents from this in general.
Ceramic housing with thermostat to prevent over heating with 60℃ set temperature.
Heating Element
Self
-
regulating
Voltage Range (HQ
-
008~010)
(based on the control power)
110 V
ac
5W
4.5
k
ΩJ
220 V
ac
5W 18
k
ΩJ
24 V
dc
5W 200ΩJ
12 V
dc
[
5W
56
ΩJ
---
21 Rev
1
]
Voltage Range (HQ
-
015~300)
(based on the control power)
110 V
ac
10W 2
k
ΩJ
220 V
ac
10W 8
k
ΩJ
24 V
dc
10W 100ΩJ
12 V
dc
10W 27ΩJ
[Note: Heaters of above were corrected from 2W. The heaters are regulated automatically up to
no-condensation point in enclosures only. Because there are not affected to explosion proof
performance. ------- 15 Rev0]

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 7 / 26 Valve Automation Leader, HKC
3.2. External Parts for Standard Models
3.2.1. HQ-008 ~ HQ-120
3.2.2. HQ-200 ~ HQ-300 (Actuator + Gear Box)
3.3. Internal parts for standard model
3.3.1. HQ-008 ~ HQ-080
Note:
HQ-008~HQ-010 does not contain torque switch assembly.
4. Installation
4.1. Pre-installation
4.1.1. Use in general service
Verify the actuator’s nameplate to ensure correct model number, torque output, operating speed,
voltage and enclosure type before installation or use.
It is important to verify that the torque output of the actuator is appropriate for the torque
requirements of the valve and that the duty cycle of the actuator is appropriate for the intended
application.

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 8 / 26 Valve Automation Leader, HKC
4.1.2. Use in potentially explosive atmosphere
Model
HQ
-
. . .
3
.
0
. . .
0
1)
Type of
protection
[
IECEx
:
Ex d
b
IIB T4, Ex
tb IIIC T135
℃
Db
,
ATEX: II 2G Ex db IIB T4 Gb, II 2 D Ex tb IIIC T135℃ Db---17 Rev0]
Ambient Temperature
-
20 ℃ ~ +60 ℃
If remained openings on the enclosure after installation for use in potentially explosive atmosphere,
the hole shall be blanked with a [certified blanking element suitable for protection of Ex db IIC or Ex
tb IIIC respectively. ----- 16 Rev1]
DANGER: Installation, commissioning, maintenance, repairs and modification work must
only be performed by qualified personnel with extensive knowledge on how to work on
explosion-proof electrical equipment.
WARNING:
Read this installation, operation and maintenance manual carefully and completely before
attempting to install, operate, or troubleshoot the HKC actuator.
NOTE:
1) Further information can be found from the HQ-series electric actuator catalogue
Refer to the CI.3 in this manual
4.2. Actuator Mounting
Note:
Prior to mounting, the part-turn actuator must be checked for any damage
Damaged parts must be replaced by original spare parts
4.2.1. Mounting is most easily done with the valve shaft pointing vertically upward. But mounting is also
possible in any other position; the actuator may be mounted in any position.
4.2.2. The HQ-series electric actuators are supplied with a female drive output. The ISO5211 bolt patterns
are provided for actuator mounting. The actuator drive bush is removable for ease of machining. It
is mandatory for the actuator to be firmly secured to a sturdy mounting bracket or directly
mounted to the valves’ ISO mounting pad. High tensile bolts or studs with spring locking washers
must be used.
4.2.3. The valve output shaft must be in lined with the actuator output drive to avoid side-loading the
shaft. To avoid backlash, flexibility in the mounting bracket or mounting should not be allowed.
CAUTION:
Do not attempt to work on your HKC actuator without first shutting off the incoming power.
Do not attach ropes or hooks to the hand wheel for the purpose of lifting by hoist
4.2.4. Actuator Mounting Base Details (ISO 5211)

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 9 / 26 Valve Automation Leader, HKC
4.2.5. Actuator Drive Bushing
4.3. Limit Switch Setting
4.3.1. Manually rotate the hand wheel of the actuator to fully closed position
4.3.2. Using a hex wrench, loosen the set screw in the CLOSE limit switch cam
4.3.3. Rotate the CLOSE cam towards CW until sounds ‘clicks’ from the limit switch lever. (see Figure 1)
4.3.4. Tighten the set screw with the hex wrench
4.3.5. Manually rotate the hand wheel of the actuator to opened position
4.3.6. Using the hex wrench, loosen the set screw in the OPEN limit switch cam
4.3.7. Rotate the OPEN cam towards CCW until sounds ‘clicks’ from the limit switch lever. (see Figure 2)
4.3.8. Tighten the set screw with the hex wrench
DANGER:
HAZARDOUS VOLTAGE. Make sure all incoming power is disconnected before setting the
limit switch
4.4. Torque Switch Setting
4.4.1. Torque spring, which detects the variation of torque during the operation, is installed to prevent
damaging the valve and actuator under overload condition. Once the actuator is under overload,
the torque switch trips, and the actuator stops immediately.
4.4.2. The torque switches are set by manufacturer on the production site. If re-setting is necessary,
please contact the HKC service representative before setting the torque switch.
CAUTION:
Do not reset torque switch to a setting higher than the maximum setting stated by the
manufacturer.
4.5. Counter-Clockwise to Close Setting
Standard actuators are normally set to clockwise rotation to close. However, the rotation can be reversed
to counter-clockwise to close by simply reconfiguring the wiring as follows:
4.5.1. Reverse wiring in the main terminal block: 9 & 10 as well as 11 & 12.
4.5.2. Adjust the visual indicator to suit the counter-clockwise rotation.
4.5.3. If a PCU card is installed: change P1 (orange) and P3 (grey) on the PCU board.
4.5.4. Move the actuator manually to half-open position and push the auto-reset button once.
4.6. Mechanical Travel Stop Adjustment

HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2 Page 10 / 26 Valve Automation Leader, HKC
4.6.1. Loosen both (open and close) travel stopper bolt nuts by 3-4 threads.
4.6.2. By turning the hand wheel, manually operate the actuator so that it is in close position until it
makes a contact with the closed limit switch.
4.6.3. Tighten the close travel stopper bolt until it contacts the 2nd worm wheel (in this position the close
travel stopper bolt should not be able to travel any further).
4.6.4. Loosen back the close travel stopper bolt by on turn and tighten the close travel stopper bolt nut.
4.6.5. Repeat the same operation for setting of the open travel stopper bolt.
4.7. Setting Potentiometer (Replacement and Setting)
The potentiometer has been calibrated at factory. However, if re-calibration is required, proceed as
follows:
4.7.1. Manually rotate the hand wheel of the actuator to fully closed position.
4.7.2. [While measuring the resistance between P1 and P2, gently rotate the Potentiometer Gear until it
reaches between 80 - 120 Ω (100 Ω preferred).--- 16Rev1]
4.7.3. Engage the Potentiometer Gear into the Point Shaft Gear and use an L-wrench to tighten the
screw.[Delete “Danger” --- 16 Rev1]
4.8. Current Position Transmitter – CPT (Optional)
The potentiometer is used for the actuator signal feedback. It reads a resistance value corresponds to the
current position of the actuator and transfers to CPT card. The CPT indicates the current position of the
actuator throughout the stroke by a 4 ~ 20mA output signal.
4.8.1. Standard Features
Model
CPT
Power
220(110)V
ac
, 50/60Hz
,
2VA
m
ax
Output Signal
4~20mA
dc
Output Impedance
750Ω
m
ax
Deadband
m
in 1/1000
Position Conversion Accuracy
±
0.5 ~
±
1.5%
Ambient Temperature
-
20
℃
to +70
℃
Ambient Humidity
90% RH
m
ax (Non
-
condensing)
Dielectric Strength
[
1 sec at (
r
ated V
ac x 2 + 1000) x1.2
(from Input power to ground) ------ 15 Rev0]
Insulation Resistance
a
bove 500V
dc
,
30MΩ
Vibration
10g, 0~34Hz