DHP-UM-026
Val Controls A/S
Limfjordsvej 3
DK-6715 Esbjerg N
Tel. +45 7547 0600
Fax +45 7547 0611
www.valcontrols.com
Revision: 2
4/7
2
Trouble shooting
*
On the IHP24 keyboard push: Error.
Travel time open*
Travel time close*
If travel time is less than 10 sec
1.
Slow down the system.
2.1
Test valve configuration
By manual calibration visually confirm that the actuator is operational. Also verify stay-put state.
Push Calibration
2.Manual
Actuator can open
Actuator can close
Actuator can stay-put
2.2
Test the position feedback
By manual calibration operate the actuator, and note the ADC values shown on the screen.
Push Calibration
2.Manual
ADC value at open
ADC value at approx.
50% travel
ADC value at close
If both values are less than 100:
1.
Check that the IHP24 is configured with correct position input.
2.
Check sensor wiring
3.
Check if the 4-20mA sensor is active or passive. Active sensors require special wiring: See
IHP24 manual and sensor manual.
For a 4-20mA position loop feedback. If one value is less than 2600.
1.
Adjust the positon sensor to operate within 4-20mA range. See sensor manual
Actuator is operational
☐
Auto calibration
sequence successful
☐
Errors in the error log
*
