Val Controls IHP24 Operating instructions

DHP-UM-026
Val Controls A/S Limfjordsvej 3 DK-6715 Esbjerg N Tel. [phone] Fax [phone]
[email protected] www.valcontrols.com
Revision: 2
1/7
IHP24
Troubleshooting

DHP-UM-026
Val Controls A/S Limfjordsvej 3 DK-6715 Esbjerg N Tel. [phone] Fax [phone]
[email protected] www.valcontrols.com
Revision: 2
2/7
Table of contents
1Identification...............................................................................................................................3
2Basic trouble shooting ................................................................................................................4
2.1 Valve configuration.............................................................................................................................. 4
2.2 Position feedback.................................................................................................................................. 4
2.3 Control loop.......................................................................................................................................... 5
2.4 Transmitter loop ................................................................................................................................... 5

DHP-UM-026
Val Controls A/S Limfjordsvej 3 DK-6715 Esbjerg N Tel. [phone] Fax [phone]
[email protected] www.valcontrols.com
Revision: 2
3/7
1Identification
Contact information
Name
Company
Phone
Mail
*Nos. are printed on device name plate
Software ID*
Software version*
*On the IHP24 keyboard push: Status 2.Identification
System information
Actuator type
☐Hydraulic ☐Pneumatic ☐Rotary ☐Linear
Position sensor mounted
on the actuator
☐4-20mA (passive) ☐4-20mA (active) ☐Potentiometer
Sensor model
(only for 4-20mA)
Problem description
Model no.*
Serial no.*

DHP-UM-026
Val Controls A/S Limfjordsvej 3 DK-6715 Esbjerg N Tel. [phone] Fax [phone]
[email protected] www.valcontrols.com
Revision: 2
4/7
2Trouble 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*

DHP-UM-026
Val Controls A/S Limfjordsvej 3 DK-6715 Esbjerg N Tel. [phone] Fax [phone]
[email protected] www.valcontrols.com
Revision: 2
5/7
If the difference is less 100:
1. Verify that the position sensor is connected to the actuator
If the difference is less 1500:
1. Increase signal span from the sensor: See sensor manual
The difference between the Open ADC value and the 50% ADC value shall be approximately equal
to the difference between the Close ADC value and 50% ADC value.
1. Check the signal from the position sensor
2.3 Test the control loop / AI0
Send 4mA followed by a 20mA signal from DCS or a loop calibrator
Push Status 1.Live status and push down arrow down until SP-mA is shown.
From DCS or loop calibrator
IHP24 Live menu - SP-mA
4mA
20mA
If signals are 0 mA
1. Check wiring
If 4 mA and 20 mA signals are “off”
1. Perform a signal calibration of AI0/Control loop: See IHP24 manual
2.4 Test the transmitter loop / AO0
Verify that the position signal transmitted from the IHP24 and the position signal received by DCS
or loop calibrator are identical
Push Status 1.Live status and push down arrow down until TM-mA is shown.
IHP24 Live menu - TM-mA
Readout from DCS or loop calibrator
If TM-mA is 3.5 mA
1. Verify that there are no errors in the error log
If 0 mA is received by DCS or loop calibrator
1. Check wiring
1. Check if the sensor is active or passive. AO0 is for use of passive transmitters, i.e. output is
active: See IHP24 manual

DHP-UM-026
Val Controls A/S Limfjordsvej 3 DK-6715 Esbjerg N Tel. [phone] Fax [phone]
[email protected] www.valcontrols.com
Revision: 2
6/7
If 4 mA and 20mA signals are “off”
2. Perform a signal calibration of the transmitter loop: See IHP24 manual

DHP-UM-026
Val Controls A/S Limfjordsvej 3 DK-6715 Esbjerg N Tel. [phone] Fax [phone]
[email protected] www.valcontrols.com
Revision: 2
7/7
3Tips and tricks
3.1 ValConnect
In order to make Val Controls support more efficient it is recommended to “read” out the
configuration data from the IHP24 through ValConnect, export the configuration and mail it to Val
Controls.
3.2 4-20mA loop
When troubleshooting a 4-20 mA loop it is generally a good idea to
1. Break the loop
2. Connect a loop calibrator to the position transmitter and verify that a signal is transmitted
3. Connect a loop calibrator to the receiver and verify that a signal is measured
3.3 Factory reset
If “troubleshooting” does not help you, a factory reset might be necessary. After a reset, the IHP24
shall be reconfigured.