General

<< Click to Display Table of Contents >>

Navigation:  Valve Firmware > Trouble shooting >

General

Previous pageReturn to chapter overviewNext page

Failure

Check

Action

Display does not light up

-24 V power supply

-Connect valve to power supply according to
‘Power, ground and sensor connection’ and make sure that power supply is working.

Remote operation does not work

-Local operation via service port active

-Switch to remote or locked operation
Refer to ‘Remote and local operation’

-Safety mode active
Check for S on display

-Check ‘Drive Power Enable Switch’
Refer to ‘Power, ground and sensor connection’

-Interlock mode active
Check for I on display

-Check Digital Input
Refer to ‘Power connector IO’ >> ‘Digital Input’

POSITION CONTROL does not work

-Safety mode active
Check for S on display

-Check ‘Drive Power Enable Switch’
Refer to ‘Power, ground and sensor connection’

-Interlock mode active
Check for I on display

-Check Digital Input
Refer to ‘Power connector IO’ >> ‘Digital Input’

-POSITION CONTROL selected, check for A on display?

-Select POSITION CONTROL mode.
Refer to ‘Control Mode’ in ‘EtherCAT’ interface

Pressure reading is wrong

Pressure reading is negative

-Sensor connection

-Refer to ‘Power, ground and sensor connection’

-ZERO done?

-Perform ZERO when base pressure is reached. Refer to ‘Pressure Sensor’ >> ‘Zero Adjust’

-Does sensor power supply provide enough power for sensor(s)?

-Verify sensor supply voltage.

ZERO does not work

-zero disabled?

-Enable ZERO.
Refer to ‘Pressure Sensor’ >> ‘Zero Adjust’

-Sensor voltage shifting?

-Wait until sensor does not shift any more before Performing ZERO.

Pressure is not ‘0’ after ZERO

-System pumped to base pressure?

-OPEN VALVE and bring chamber to base pressure before performing ZERO.

-Sensor offset voltage exceeds ±1.4V

-Adjust the offset direct at the sensor

-Check function of the sensor.

PRESSURE CONTROL does not work

-PRESSURE CONTROL selected, check for P on display?

-Select PRESSURE CONTROL mode.
Refer to ‘Control Mode’ in ‘EtherCAT’ interface

-LEARN done?

-Perform LEARN. Refer to
‘Pressure control’ >> ‘Adaptive algorithm’ >> ‘Learn’

-Sensor signal ok?

-Refer to ‘Pressure Sensor’

-Pressure control setup done

-Refer to ‘Pressure control’

PRESSURE CONTROL not optimal

-LEARN successfully done?

-Perform LEARN. Check ‘Status’ and ‘Warning Info’ in
‘Pressure control’ >> ‘Adaptive algorithm’ >> ‘Learn’

-ZERO performed before LEARN?

-Perform ZERO then repeat LEARN.
Refer to ‘Pressure Sensor’ >> ‘Zero Adjust’

-Was gas flow stable during LEARN?

-Repeat LEARN with stable gas flow. Refer to
‘Pressure control’ >> ‘Adaptive algorithm’ >> ‘Learn’

-Tuning done?

-Tune valve for application.
Refer to the tuning sections in ‘Pressure Control’

-Is sensor range suited for application?

-Use a sensor with suitable range (controlled pressure should be >3% and < 98% of sensor full scale).

-Noise on sensor signal?

-Make sure a shielded sensor cable is used.