Installation and Maintenance Manual
Release: February 2017
HQ Proportional Control Unit (PCU-A)
HQ-401-0217
Service Instructions
HQ-401-0217
Table of Contents
Section 1: Check Point Using Actuator ..................................... 1
Section 2: General Performance ............................................... 1
Section 3: Standard Specification ............................................ 2
Section 4: Function of PCU and How to Set and Use it ............... 3
4.1 Select input signal ........................................................................................ 3
4.2 Set DIP switch for fail position .......................................................................3
4.3 Delay time .................................................................................................... 4
4.4 Resolution .................................................................................................... 4
4.5 Manual operation ......................................................................................... 5
4.6 Special setting for full open and close ........................................................... 5
4.7 Auto setting ................................................................................................. 6
4.8 Split range (CH1) .......................................................................................... 6
4.9 Reversal acting switch (CH2) ........................................................................ 7
4.10 Selection of output signal ............................................................................. 8
Table of Contents
February 2017
Section 5: Special Tools ............................................................ 9
Section 6: Setting Potentiometer (Replacing and Setting) ........ 9
Section 7: Limit Switch Setting .............................................. 10
Section 8: Check Operation of PCU ......................................... 11
Section 9: Layout of PCU Card ................................................ 11
Section 10: Document Revision .............................................. 13
Table of Contents
I
Table of Contents
February 2017
Table of Contents (continued)
Appendix A: List of Tables ...................................................... 14
Appendix B: List of Figures ..................................................... 14
Appendix C: List of Drawings
C.1 Dwg. No. HQ-15000-A , 1 Ph Wiring Diagram PCU ...................................... 15
C.2 Dwg. No. HQ-1500-A , 1 Ph Wiring Diagram Std. ........................................ 16
Service Instructions
HQ-401-0217
*Thanks for purchasing our HQ series electric actuator.
Before installing or operating actuator, please read this manual to thoroughly know how to
install and operate this device.
The contents of this manual are subject to change without notice due to continuously ongoing
improvements.
II
Table of Contents
Service Instructions
HQ-401-0217
Section 2: Checking Points
February 2017
Section 1: Check point before using actuator
1. Check if specification (Model No., Main Power, Control Power, Options) of delivered
actuator meets your requirements or not.
2. Check the application such as valve, damper & etc.
3. Check if mounting of actuator on application is correct and tight enough.
4. Check if settings of actuator such as limit switch, stopper bolts, indicator is correct or
not.
5. Check if electric wiring is correct or not.
6. In case of 3-phase motor, check rotating direction.
— Check rotating direction of actuator
— Open actuator about 50% by manual, supply power to actuator for 2-3
seconds.
— Push close button and check if actuator closing direction is correct or not.
— If actuator is moving in the wrong direction, turn off power supply to the
actuator and reverse the open and close lines from the PCU card.
7. Generally, all PCU functions are set in the factory before delivery and there is no need
to set the functions again.
— Only in special cases where the customer wants to adjust the limit switches, is
PCU function setting required.
— Setting is simple and only requires the pushing of the AUTO SETTING button
after putting actuator in 50% open (or close) position.
— PCU automatically sets all the functions by itself.
8. Disassembly or modification without the factory's consent may affect the performance
of the actuator.
Section 2: General Performance
The PCU is the local actuator controller, using 12-bit A/D converter and an 8-bit Microprocessor, which operates the open and close functions according to the input signal from main
controller.
After operating the actuator, the PCU detects the current position and transmits position
feedback signals to the main controller.
Checking Points
1
Section 3: Standard Specification
February 2017
Section 3: Standard Specification
1. Model: PCU REV A4
2. Power: 85V-260VAC +10% 50/60Hz 4VA Max (New Wide range of voltage)
3. Input signal: 4-20mA DC, 2-10V DC, 0-5V DC, 0-10V DC, 1-5V DC
Input resistance: 250 Ohms, Feedback signal: 100 - 10K Ohm
4. Output signal: 4-20mA DC, 2-10V DC, 0-5V DC, 0-10V DC, 1-5V DC
5. Load resistance: 500 Ohms Max.
6. Control output: TRIAC contact 250VAC 16A Max (Inductive load)
7. Number of output contact: 2 each (Open and close contact)
8. Delay time adjustment: 0.05-7.5 sec (0Step 50msec 0-15 Step)
1-4 Step (Step Number X200msec) 5-15 Step (Step Number X 500msec)
9. Dead Band adjustment: 0.12mA DC MAX
10. Resolution Adjustment: 0 Step: 0.068mA 0-15 Step (Step Number +0.068mA)
11. Position conversion accuracy: +0.5 - +1.5% (Depends on installation)
12. Ambient temperature: 25°C - +80°C
13. Ambient humidity: 90% RH Max (Non-condensate)
14. Dielectric strength: 1500V AC 1 Min (Input to output, Power to Ground)
15. Insulation resistance: Min. 500V DC 30Mohm
16. Vibration & Shock (X, Y, Z); 10g (6g based on RMF, Frequency: 0.2 - 34Hz, 30 Min)
17. LED Signal
Service Instructions
HQ-401-0217
Figure 1 PCB LED Panel
LED SIGNAL
Blue On Power On (AUTO)
Blue Flicker AUTO SETTING
Green Flicker Closing
Green On Full Close
Red Flicker Opening
Red On Full Open
Yellow On Manual Mode
Fault in either
Yellow Flicker
No input signal,
Wrong input wiring,
Wrong PIU setting
VIEW A
2
Standard Specification
Service Instructions
HQ-401-0217
Section 4: Function of a PCU
February 2017
Section 4: Function of a PCU and how to set
and use it
4.1 Selecting of the input signal
User can select suitable input signal by adjusting DIP switches as follows.
Figure 2 Input DIP switch
Select input signal
switch
1 2 3
4 - 20mA DC
2 - 10V DC
1 2 3
60 Hz
1 - 5V DC
50 Hz
4
1 2 3
1 2 3
0 - 10V DC
1 2 3
0 - 5V DC
4
Select input Hertz
NOTE:
If there is no instruction for the input signal, the default is 4-20mA.
4.2 Setting of fail position
In order to prevent issues when the signal fails, the user can set the fail
position of actuator by setting of DIP switches as follows.
Figure 3 Fail position DIP setting
Setting of fail position
Switch (1,2)
switch
F CLOSE
F OPEN
A FULL
CH1
CH2
VIEW B
FAIL CLOSE
1 2 3 4 5
FAIL OPEN
1 2 3 4 5
Function of a PCU
VIEW C
1 2 3 4 5
FAIL STOP
1 2 3 4 5
3
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