Emerson EIM PCU REV A4 Manual

Installation and Maintenance Manual

HQ-401-0217

Release: February 2017

HQ Proportional Control Unit (PCU-A)

Service Instructions

HQ-401-0217

Table of Contents

February 2017

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

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

Service Instructions

HQ-401-0217

Table of Contents

February 2017

II Table of Contents

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

*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.

Service Instructions

HQ-401-0217 February 2017

Section 2: Checking Points

Checking Points

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 Microproces-

sor, 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.

February 2017

Service Instructions

HQ-401-0217

Section 3: Standard Specification

Standard Specification

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

Figure 1 PCB LED Panel

LED SIGNAL

VIEW A

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

Yellow Flicker

Fault in either

No input signal,

Wrong input wiring,

Wrong PIU setting

Service Instructions

HQ-401-0217 February 2017

Section 4: Function of a PCU

Function of a PCU

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

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

VIEW B

1 2 3

4 - 20mA DC

1 2 3

0 - 10V DC

1 2 3

0 - 5V DC

1 2 3

2 - 10V DC

1 2 3

1 - 5V DC

60 Hz 50 Hz

Select input signal

switch

Select input Hertz

switch

1 2 3 4 5

Setting of fail position

Switch (1,2)

F CLOSE

F OPEN

A FULL

CH1

CH2

1 2 3 4 5

FAIL CLOSE

FAIL OPEN

FAIL STOP

VIEW C

February 2017

Service Instructions

HQ-401-0217

Section 4: Function of a PCU

Function of a PCU

4.3 Delay Time

This prevents continuous operation of PCU card caused by abnormal signal input such as noise,

microphone and other foreign frequency. Once the signal is detected, PCU follows that signal

but if there is a preset time, PCU doesn't move within the time.

PCU can move when input signal lasts a certain time which is preset. Turning the switch

clockwise, increases delay

Range 0.05- 7.5 sec (0Step 50msec 0-15Step)

1-4 Step (Step Number X 200msec)

5-15Step (Step Number X 500msec)

Figure 4 Delay rotary switch

4.4 Resolution adjustment

This is set allowance between input signal and position of actuator and if turned clockwise, sets

it wider and vice versa.

Please observe caution when turning this counter-clockwise because if it is too narrow, it could

cause "HUNTING".

HUNTING is an issue where the actuator doesn't stop at a position and repeats the move of

open and close

Dead Band adjustment: 0 .12mA DC MAX

Resolution Adjustment: 0 Step: 0.068mA

0-15Step (Step Number+0.068mA)

Figure 5 Resolution adjustment switch

NOTE:

HUNTING is one of the causes of motor burning and damage of potentiometer and PCU card.

VIEW D

Resolution

Adjustment

OPEN

DEAD BAND

TARGET

VIEW D

Delay

time

D/B TIME

Service Instructions

HQ-401-0217 February 2017

Section 4: Function of a PCU

Function of a PCU

4.5 Manual operation by PCU card

In order to operate actuator by card, press ZERO and SPAN buttons together for 2 seconds. The

yellow LED will turn on to confirm manual operation mode.

If ZERO button is pushed, actuator will move to close and if the SPAN button is pushed, the

actuator will move to open.

Left alone for 15 seconds without operation, PCU will come out from manual operation mode.

NOTE:

(During manual operation mode, input signal is ignored)

Figure 6 Manual operation button

4.6 Special signal setting for full open and full closed

Figure 7 Special setting switch

"3 " Up : Signal : 4.3mA Full Closed

Signal : 19.7mA Full Open

"3 " Down : Signal : 4mA Full Closed

Signal : 20mA Full Open

span

open

zero

VIEW E

1 2 3 4 5

F CLOSE

F OPEN

A FULL

CH1

CH2

VIEW C

Manual

Operation

Button

Special setting

switch

February 2017

Service Instructions

HQ-401-0217

Section 4: Function of a PCU

Function of a PCU

4.7 AUTO SETTING

If mounting between actuator and application is correct, and input signal, input power and

wiring are correct, push AUTO SETTING button just once regardless of the position of

actuator.

Then Blue LED flickers with indicating LED as following:

1) Opening with Red LED in 5 sec-> 2) Full Close with Green LED->

2) Full Open with Red LED.

NOTE:

Please make sure that Limit Cam touches (Open/Close) Limit Switch while Autosetting.

Figure 8 AUTO SETTING button

4.8 Split range (CH1)

The Split range is a useful function that allows the customer to set the actuator to full close and

full open position using a signal if the input signal is not precise.

If customer wants to set actuator to full close position at 5mA, supply 5mA DC and actuator

moves to the position.

Then put CH1 DIP switch on and push ZERO button once. Then actuator acknowledges that

position as full close position and transmits 4mA DC.

Open set is same but instead, push SPAN Button.

Once setting is done, put CH1 DIP switch off.

Adjustable range is:

• Close: 3 - 8mA DC

• Open: 16 - 21 mA DC

NOTE:

By using this DIP switch, the customer may set various positions at certain signal.

span

open

zero

AUTO

SETTING

LD1 LD2 LD3 LD4

OPEN

AUTO

FAULT

VIEW E

AUTO SETTING

BUTTON

Table of contents

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