HKC LCU-P Instruction manual

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 1 / 14 Valve automation leader HKC
Local Control Unit - P
(LCU-P with PCU function integrated)
Installation, Operation & Maintenance Manual
26, Emtibeui 28-ro, Siheung-si, Gyeonggi-do, (15119) Republic of Korea
Tel: [phone], Fax: [phone], www.hkcon.co.kr

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 2 / 14 Valve automation leader HKC
Table of Contents
1. Introduction ................................................................................................................................................................... 3
2. Check point before using the actuator ............................................................................................................. 3
3. Standard Specification .............................................................................................................................................. 4
4. Layout of LCU-P board ............................................................................................................................................. 4
5. Main function and it’s usage for Local Control ............................................................................................ 5
6. Main function and usage in Remote Manual Control ............................................................................... 6
6.1 Dry contacts control (command contact) .................................................................................................................... 6
6.2 External output signal contacts ........................................................................................................................................ 7
7. Main function and usage for Remote modulating control (proportional control). ...................... 8
7.1 Select input signal switch ................................................................................................................................................... 8
7.2 Set feedback type ................................................................................................................................................................... 9
7.3 Deadband setting ................................................................................................................................................................... 9
7.4 Deadtime setting ..................................................................................................................................................................... 9
7.5 Auto setting .............................................................................................................................................................................10
7.6 Fail close (FC), fail open (FO) and fail stop ..............................................................................................................10
7.7 Auto full action (AF) ............................................................................................................................................................11
7.8 Reverse mode (I/R)...............................................................................................................................................................11
7.9 Irregular command setting ...............................................................................................................................................11
7.10 Adjust output (feedback) signal .....................................................................................................................................11
8. LED display ................................................................................................................................................................... 12
8.1 Operating display..................................................................................................................................................................12
8.2 Error display .............................................................................................................................................................................13
9. LCU-P operating ........................................................................................................................................................ 13
10. LCU-P wiring diagram ............................................................................................................................................. 14

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 3 / 14 Valve automation leader HKC
1. Introduction
1.1 Purpose
The LCU-P unit was developed to add a PCU function to the LCU-B unit for the HQ and HL
series electric actuators, and it is possible to add a communication module such as ProfiBus
and ModBus for customer convenience. This manual is intended for safe use, installation and
maintenance of the LCU-P.
1.2 The LCU-P board has Local mode which can be operated directly from local control and
Remote mode which can be remotely operated in distance. It is also possible to integral
control of on/off operation and remote modulation operation which input a command signal
of 4~20 mA range.
1.3 This product is equipped with 8 BIT RISC CPU to guarantee various functions and high
reliability, including self-diagnosis function. The user can conveniently diagnose the error from
WINDOW LED status
1.4 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. Check point before using the actuator
2.1 Make sure that the actuator specification (model number, main power, control power,
optional items, and etc.) is in conformity with the order specification.
2.2 Check that the size, pressure rating, etc. of the valve is in accordance with the order
specification.
2.3 Check that the actuator and the valve are assembled securely.
2.4 Check the status of the limit switches, stopper bolts, and indicator setting of the actuator.
2.5 Make sure to check the electrical specifications (power, input/output signal, wiring status
according to the wiring diagram, and etc.)
2.6 Do not arbitrarily modify, alter or repair the wirings of the actuator.
2.7 Before shipped from the factory, the settings of Dead band and Dead time are pre-adjusted
basically. If the user has arbitrarily adjusted the position of the limit switches or the
potentiometer, please make re-setting the present status through press the Auto setting
function on the LCU-P board.
2.8 Please do not disassemble, assemble, or modify the actuator without any technical support
or explanation from HKC. If any abnormality or problem occurs, please contact us
immediately.
Caution:
In order to use the product correctly and safely, please make sure to fully understand the
contents of this manual before using the product.
Some contents of this manual may be subject to change without prior notice for the
purpose of improving the quality, etc.

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 4 / 14 Valve automation leader HKC
3. Standard Specification
3.1 Table 1: Standard specification of the Proportional Control Unit
Model
LCU
-
P
Input signal (setpoint)
4~20
mA
dc
,
1
~
5V
dc
, 2~10V
dc
0~20mA dc, 0~5V dc , 0~10V dc
Input signal resistance
250
Ω
,
position resistance
: 100~10
k
Ω
Output signal (feedback)
4~20mA
dc
, 1
~
5V
dc
, 2~10V
dc
0~20mA dc, 0~5V dc, 0~10V dc
L
oad
resistance
500
Ω
max
Dead time
0.2~7.5 sec (It can be set in 16 step)
•
Step 0 : 0.2 sec
•
Step 1 ~ 4 : 0.25 ~ 1sec (0.25sec / step)
•
Step 5 ~ 15 : 2.5 ~ 7.5sec (0.5sec / step)
Dead band
0.4~7.5 % (It can be set in 16 step)
•
Step 0 ~ 4 : 0.4 ~ 0.8% (0.1% / step)
•
Step 5 ~ 9 : 1 ~ 1.8% (0.2% / step)
•
Step 10 ~ 15 : 5 ~ 7.5% (0.5% / step)
F
ault mode
F
ail close
, F
ail open
, F
ail stop
Position conversion accuracy
±(0.2 to 5)% (may vary depending on conditions)
Ambient temperature
-
20
℃
to 80
℃
Ambient humidity
90% RH
m
ax. (non
-
condensing
condition
)
Dielectric strength
1500V ac
,
1 minute
Insulation resistance
500V dc, 50MΩ or more
Vibration and shock
Z axis
1g/3g
,
f
requency:
100
–
200
Hz,
t
ime: within 30 minutes
4. Layout of LCU-P board
Front Back

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 5 / 14 Valve automation leader HKC
Front
Back
No. Position Color Signal
1 LED 1 Blue Remote
2 LED 2 White Power
3 LED 3 Green Close
4 LED 4 Amber Fault
5 LED 5 Red Open
5. Main function and it’s usage for Local Control
LED display Action
1) Power indication (Power LED display: White)
2) Select “Local” in mode knob (Remote / Stop / Local)
3) When shipped out the actuator from factory, the actuator is
fully closed status.
4) Select “Open” in action knob (Open/Close)
5) When action is in opening progress, the open (red) LED is
flickering.
6) If Opening is completed, the open (red) LED will be
maintaining as on.
7) After that, the actuator is stopped.
Terminal block Switch
No. Part No. Part No. Part
1 Relay output signal 8 Phase check connector 15 Deadband & deadtime
2 3-phase motor connector 9 Communication port 16
Close
(
black
)
,
Open
(
white
)
& ASCAN(red) button
3
Condenser connector
(1ph) 10
Limit
&
torque
s/w
Signal connector 17
5-pin dip switch (SW4)
4 1-phase motor connector 11 Remote signal 18 4-pin dip switch (SW3)
5 220V ac input 12 5V dc & 12V dc output 19 2-pin dip switch (SW1)
6 220V ac output 13 28V ac & 10V ac input
20
3
-
pin dip switch (SW2)
1P: Fault relay NO/NC
2P: Inching/Hold
3P: Close limit bypass
(Torque trigger)
7 Set point, potentiometer
& feedback 14
Program upload

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 6 / 14 Valve automation leader HKC
LED display Action
8) Select “Close” in the action knob
9) When action is in closing progress, the close (green) LED is
flickering
10) If Closing is completed, the close (green) LED will be
maintaining as on
11) After that the actuator is stopped.
* If you want to make stop the actuator under operating, select
the stop position of the mode knob
◎ Error
- In case of missing a phase or reverse contact in the 3 phase.
- Encountered torque switches due to over torque during
operating.
* Please refer to Error display –Page 13.
◎ If it is fault condition, the fault LED(amber) will be flickering.
6. Main function and usage in Remote Manual Control
6.1 Dry contacts control (command contact)
6.1.1 Command function is activated when is input an action by external dry contact.
6.1.2 Hold / Inching can be selected by changing the 3-pin Dip Switch (SW2) specified in No.
20 of “4. LCU-P board layout”.
① Pin No.2 : select as Hold (On) / Inching (Off)
6.1.3 Connect the actuator terminal from outside refer to Fig 1 as below.
< Fig 1 Actuator terminal wiring >
6.1.4 The actuator does not work if the 6 (Stop) and 9 (Com) terminals are not connected.
6.1.5 Check action of the actuator after wiring.
6.1.6 When operating at the site after connect the Common wire;
① After make jumper between No.6 (Stop) and No. 9 (Com) terminal, and make jumper
between No.7 (Open) and No. 9 (Com) terminal, after that the actuator will be moved to
open.
② After make jumper between No.6 (Stop) and No. 9 (Com) terminal, and make jumper
between No.8 (Close) and No. 9 (Com) terminal, after that the actuator will be moved to
close.
③ Dip switch (SW2) setting at the clause 6.1.2

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 7 / 14 Valve automation leader HKC
 Hold : At this time, the actuator will be continually move to fully open or fully close
position.
 Inching : It is only move in case of connected between No.7(Open) and No.9 (Com),
or between No.8(Close) and No.9(Com).
But if the connection is opened, it doesn’t operate.
6.1.7 It can be checked by confirming operation on site whether actuator is contact to
command or not.
6.2 External output signal contacts
6.2.1 External output signal contacts use when receive about actuator status from external
(panel) signal.
6.2.2 Wiring should be as shown below in Fig 2.
<Fig 2 Actuator terminal wiring>
6.2.3 After completed according to Fig 2, operate the actuator for confirming output signal.
① Remote lamp (A-contact: normal open)
 Checking with No.10 and No.11 terminal.
 The contact is changed when the Mod knob of the actuator is put to Remote.
② Open lamp (A-contact: normal open)
 Checking with No.10 and No.12 terminal.
 The contact is changed when the actuator is moving to open.
③ Fault lamp (Possible to select A-contact: normal open, B-contact: normal close)
 Checking with No.10 and No.13 terminal.
 The contact is changed when the actuator is fault (activated on the torque switch).
 It is possible to select the contact by 3-pin DIP switch (SW2) of LCU-P layout No20
as No1-On: B-contact, No1-Off: A-contact
④ Closing lamp (A-contact: normal open)
 Checking with No.10 and No.14 terminal.
 The contact is changed when the actuator is moving to close.
⑤ Auxiliary contact for open
 No.15 and No.16 are consisted A-contact (normal open), No.15 and No.17 are B-
contact (normal close).
 It is used to check in fully open, or used in conjunction with other devices. (B-
contact is applied to connect the other devices, A-contact is to check the signal)
⑥ Auxiliary contact for close
 No.18 and No.19 are consisted A-contact (normal open), No.18 and No.20 are B-
contact (normal close).
 It is used to check in fully close, or used in conjunction with other devices. (B-
contact is applied to connect the other devices, A-contact is to check the signal)

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 8 / 14 Valve automation leader HKC
LED display Action
1) Power input check (LED display- Power LED : White)
2) Select “Remote” of Remote / Stop / Local knob switch
3) Confirm the blue on the Remote LED
4) The actuator is set as fully close when is shipping to
customer.
5) The open LED (red) is flickering for opening.
6) Completed to open : the red LED is On.
7) After that the actuator is stopped at open position.
8) The close LED (green) is flickering for closing.
9) Completed to close : the green LED is On
10) After that the actuator is stopped at close position.
7. Main function and usage for Remote modulating control (proportional control).
7.1 Select input signal switch
Depending on the system environment, the user can select the required command signal type
by setting the DIP switch SW3.
Notes : DIP switch SW3 is commonly set with 4~20mA dc before shipping.
Please make sure whether the input signal and DIP switches are correct as intended use.
Caution : Zero switch SW3-3 is applied to input and output signals equally.

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 9 / 14 Valve automation leader HKC
7.2 Set feedback type
Depending on the system environment, the user can select the required output feedback
signal by setting the DIP switch SW1.
Notes : DIP switch SW1 is commonly set with 4~20mA dc before shipping.
Caution : Please refer to Zero switch SW3-3 of the clause “7.1 Select input signal switch“.
7.3 Deadband setting
7.3.1 Deadband means maximum allowable tolerance of the actuator stop position from
command signal.
7.3.2 It is also minimum difference value for starting to move of the actuator.
7.3.3 Adjustable setting range : 0.4 ~ 7.5% (16 steps available)
① Step 0~4 : increase 0.1% increment per step (0.4~0.8%)
② Step 5~9 : increase 0.2% increment per step (1.0% ~ 1.8%)
③ Step A~F : increase 0.5% increment per step (5.0% ~ 7.5%)
④ Initial setting is “4”
7.3.4 If the setting value is too lower, the actuator may not be found the target point and it
may be repeatedly operated in forward or reverse direction. This is called “Hunting” and
the user must appropriately adjust the deadband to avoid from the hunting.
7.3.5 Continuous hunting causes a failure of the actuator parts such as motor, LCU-P board,
potentiometer and etc.
7.4 Deadtime setting
7.4.1 This is necessary to apply the command signal.
7.4.2 It is the minimum time for maintaining the state of the input signal satisfying the
deadband.
7.4.3 Actuator only accepts input signal satisfying the setting value of the deadtime as normal
and operates. It is for preventing from abnormal operation of the actuator by external
disturbance something like noise.
7.4.4 Adjustable setting range : 0.2~7.5 sec (16 steps available)
① Step 0 : 0.2 sec (minimum value)
Deadband Module
Deadtime Module

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 10 / 14 Valve automation leader HKC
② Step 1~4 : increase 0.25 sec increment per step (0.25~1 sec)
③ Step 5~F : increase 0.5 sec increment per step (2.5~7.5 sec)
④ Initial setting is “4”
7.5 Auto setting
7.5.1 It shall be proceeded “Stop” status of the mode knob.
7.5.2 Check connection status of the input power, input/output signal after actuator and valve
are correctly assembled.
7.5.3 When the wiring is normal without problem, push the auto setting button.
7.5.4 Then the Remote LED (blue light) of the window is flickering, and perform the auto
setting function.
7.5.5 Auto setting details
Select “Stop” position of the mode knob, and you can perform according to ① or ②
method as below.
① Operate SW7 (A-SCAN) of the LCU-P board
1) Need to open the LCU cover of the actuator, and push the Auto setting button.
② Operate knob
1) Confirm “Stop” position of the mode knob
2) Hold for 5 seconds at “Close” of the action knob
3) Confirm to Off from On of the blue LED
4) Operate “Open” of the action knob within 3 seconds
5) Confirm to Off from On of the blue LED as holding status for about 5 seconds
6) Change to “Local” of the mode knob, and then turn to “Stop”
7) Not need to open the LCU cover
7.5.6 After pushing the A-SCAN, Auto setting is performed as follows.
① Flickering the blue LED continuously.
② Green LED is flickering during closing, the green LED is on after fully closed.
If the actuator were already closed, the closing operation will be skipped.
③ Red LED is flickering during opening, the red LED is on after fully opened.
④ Green LED is flickering during closing, the green LED is on after fully closed.
⑤ When all of the sequences are automatically and successfully completed, blue LED will
be On, and then move to pre-specified position
Notes : During the auto setting processes, if you press any button or operate the knob,
the auto setting mode is cancelled.
7.6 Fail close (FC), fail open (FO) and fail stop
When an analogue command signal does not come in or a wrong signal is received, the LCU-P
will detect Fault and operates automatically open, close and stop according to specified fail
position.
Auto
setting
button

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 11 / 14 Valve automation leader HKC
7.7 Auto full action (AF)
7.7.1 Turn on the AF (Auto Full) DIP switch No3
7.7.2 Response of the actuator
① Move to fully close position at 4.3 mA and lower of
the input signal.
② Move to fully open position at 19.7 mA and over of
the input signal
7.8 Reverse mode (I/R)
7.8.1 It is used when user want to operate actuator by
inverting input signal and output signal.
7.8.2 When the command signal is 4 mA, the actuator moves
to fully open position, and makes 4 mA dc as an
output signal.
7.8.3 When the command signal is 20 mA, the actuator
moves to fully close position, and makes 20 mA dc as
an output signal.
7.9 Random command signal setting
7.9.1 Proceed after select “Stop” of the mode knob for using this function.
7.9.2 It is needed to change the Zero (fully close) and Span (Fully open) signal.
7.9.3 Adjustable setting range of the Zero signal : about 3~8mA dc
7.9.4 Adjustable setting range of the Span signal : about 16~21mA dc
※ Example: Set as the 5 mA dc was apply to Zero, and 19 mA dc was Span signal
① Confirm the mode knob position as “Stop”.
② Turn on No 4 (I/S input set) of the DIP SW4.
③ Quickly flickering both of the red and green LED.
④ About 1.5 second later, quickly flickering the green LED only
⑤ Input 5mA to command signal at the input terminal, and then push to unlock the Zero
button (black)
⑥ If it were successfully set, yellow LED is flickered 1 time, green LED is on (completed
setting) and red LED is flickering for waiting to input setting.
⑦ Input 19mA to command signal at the input terminal, and then push to unlock the
Span button (white)
⑧ If it were successfully set, yellow LED is flickered 1 time and red LED is on (completed
setting).
⑨ After 1.5 second, this sequence will be repeated from “③”.
⑩ When you want to quit from this setting, turn off No.4 of the DIP SW4 (I/S input set)
※ If the No.4 of the DIP SW4 were turned off during processing, the setting is cancelled.
※ If there were not input anything for 2 minutes, the setting process is also cancelled.
7.10 Adjust output (feedback) signal
7.10.1 Proceed after select “Stop” of the mode knob for using this function.

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 12 / 14 Valve automation leader HKC
7.10.2 Adjust Zero (4mA) and Span (20mA) value of the output signal.
7.10.3 Each time the zero button (black) is pushed, the output signal decreases.
7.10.4 Each time the span button (white) is pushed, the output signal increases.
※ Example : Set as the 4 mA dc was apply to Zero, and 20 mA dc was Span signal
① Put the mode knob position as “Stop”.
② Turn on No 4 switch of the DIP SW3.
③ Flickering both of the red and green LED and then waiting to flicker the green LED
only.
④ Adjust output signal value as 4 mA pushing the Zero or Span button.
⑤ Confirm the 4 mA output, press A-SCAN button (red).
⑥ Confirm the yellow LED is on and off.
⑦ Green LED is on, and confirm that red LED is flickering.
⑧ Adjust output signal value as 20 mA pushing the Zero or Span button.
⑨ Confirm the 20 mA output, press A-SCAN button (red).
⑩ Confirm the yellow LED is on and off.
⑪ Confirm the red LED is on.
⑫ Flickering both of the red and green LED at the same time and then waiting to flicker
the green LED only.
⑬ Turn off No.4 of the DIP SW3
※ If the No.4 of the DIP SW3 were turned off during the setting process, the setting is
cancelled.
※ If there were not input anything from the button for 2 minutes, the setting process is
also cancelled.
8. LED display
8.1 Operating display
Signal Operating Display LED Color
Power Power on On LED 1 White
Remote Digital On LED 2 Blue
Analog or Auto Scan Flicker
Close Close limit On LED 3 Green
Closing Flicker
Fault Torque trip On LED 4 Amber
Malfunction Flicker
Open Open limit On LED 5 Red
Opening Flicker

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 13 / 14 Valve automation leader HKC
8.2 Error display
No Error type
(Malfunction)
LED display
White Green Amber Red
1 Mode switch Off Off Off On
2 Abnormal of local switch Off Off On Off
3 Remote switch Off Off On On
4 Abnormal of limit switch Off On Off Off
5 Torque trip Off On Off On
6 Missing a phase of power Off On On Off
7 Abnormal of EEPROM Off On On On
8 Abnormal of initial set point On Off Off Off
9 Abnormal of initial auto setting On Off Off On
10 Lose of set point On Off On Off
11 Reverse turn the motor On Off On On
12 Abnormal of set point selection On On Off Off
13 Abnormal of potentiometer On On Off On
14 Abnormal of opening On On On Off
15 Abnormal of closing On On On On
9. LCU-P operating
Actuator position Fully close Fully open
Input signal 4mA dc, 0V dc, 1V dc, 2V dc 20mA dc, 5V dc, 10V dc
Output signal 4mA dc, 0V dc, 1V dc, 2V dc 20mA dc, 5V dc, 10V dc
Signal LED Green LED - On Red LED - On
Auto setting Blue LED Flicker
Fault Amber LED Flicker

LCU-P
Installation, Operation & Maintenance Manual
Doc. No.: HumG-LCUP-19 Rev.0 E Page 14 / 14 Valve automation leader HKC
10. LCU-P wiring diagram
HKC Co., Ltd.
Address : 26, Emtibeui 28-ro, Siheung-si, Gyeonggi-do, (15119) Republic of Korea
Tel: [phone], Fax: [phone], www.hkcon.co.kr