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HQ Series Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Doc No. : HumG-HQ-21 Rev2
Page 14 / 26
Valve Automation Leader, HKC
①
Check connection status of the input power and input/output signal after actuator and valve are
correctly assembled.
②
If there is no problem with the wiring, push the auto setting button once (ASCAN).
③
Then the LED lights on the PCU board will be flickering and perform the auto setting function.
④
Auto setting details
②
Blue LED will be continuously flickering.
③
Green LED will be flickering while closing and it will be ‘ON’ after fully closed.
If the actuator is already in closed position, the closing operation will be skipped.
④
Red LED will be flickering while opening and it will be ‘ON’ after fully opened.
⑤
Green LED will be flickering while closing and it will be ‘ON’ after fully closed.
⑥
When all of the sequences are automatically and successfully completed, Blue LED will be ‘ON’
and then actuator will move to pre-set position
Notes: If you press any button of ZERO/SPAN/ASCAN during the auto setting processes, the auto
setting mode will be cancelled.
4.9.8.
Fail close (FC), fail open (FO) and fail stop
Dip Switch
PCU model
Power source
SW3
PCU-EB-V1.5D
for AC
SW1
PCU-DC-V2.1C
for DC
When an analogue command signal does not come in or a wrong signal is received, the PCU
board will detect the Fault and operates actuator automatically in open, close and stop position
according to pre-set fail position.
4.9.9.
Auto full action (AF)
Dip Switch
PCU model
Power source
SW3
PCU-EB-V1.5D
for AC
SW1
PCU-DC-V2.1C
for DC
①
Turn on the AF (Auto Full) DIP switch No3
②
Response of the actuator
Move to fully closed position on input signal of 4.3 mA or
lower.
Move to fully opened position on input signal of 19.7 mA
or higher.
4.9.10.
Reverse mode (RV)
Dip Switch
PCU model
Power source
SW3
PCU-EB-V1.5D
for AC
SW1
PCU-DC-V2.1C
for DC
①
It is used when user want to operate actuator by inverting input
signal and output signal.
②
When the command signal is 4 mA, the actuator moves to fully
opened position, and makes 4 mA dc as an output signal.
③
When the command signal is 20 mA, the actuator moves to fully
closed position, and makes 20 mA dc as an output signal.