VAT 612 Series - Troubleshooting; Common Display Errors and Failures

TROUBLE SHOOTING Series
612
88/116 Edition 2018-08-20 605262EE
6 Trouble shooting
Failure Check Action
No dots lighted on display - 24 V power supply ok? - Connect valve to power supply according to
«Electrical connection» and make sure that power
supply is working.
Remote operation does not
work
- Local operation via
service port active
- Switch to remote operation.
- Safety mode active,
check for D on display?
- Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.
Display shows «E 20»
(fatal error - limit stop of valve
unit not detected)
- Clamp coupling screw not
fastened?
- Tighten screw. Refer to chapter «Maintenance» for
details.
Display shows «E 21»
(fatal error - rotation angle of
valve plate limited during power
up)
- Valve plate centric
adjusted?
- Adjust valve plate according to
«Maintenance procedure».
- Valve unit heavy
contaminated?
- Clean valve unit according to
« Maintenance procedure ».
- Valve plate mechanically
obstructed?
- Resolve obstruction.
Display shows «E 22»
(fatal error - rotation angle of
valve plate limited during
operation)
- Valve unit heavy
contaminated?
- Clean valve unit according to
«Maintenance procedure».
- Valve plate mechanically
obstructed?
- Resolve obstruction.
Display shows «E 40»
(fatal error - motor driver failure
detected)
- Replace control and actuating unit according to
«Maintenance procedure».
Display shows «D 0»
Motor Interlock is open
- Motor power supplied? - Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.
Display shows «SR»
(Service Request)
- Valve unit heavy
contaminated?
- Clean valve unit according to
«Maintenance procedures».
CLOSE VALVE does not work - Safety mode active,
check for D on
display?
- Maintenance mode active
- Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.
- Refer to “Display shows «M C»” in this table
OPEN VALVE does not work - Safety mode active,
check for D on display?
- Maintenance mode active
- Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.
- Refer to “Display shows «M100»” in this table
Display shows «M C»
Maintenance mode active
- Pin 14 of service connector is connected to ground.
Plate will close. Further movement of plate is
blocked.
1)
Display shows «M100»
Maintenance mode active
- Pin 13 of service connector is connected to ground.
Plate will open. Further movement of plate is
blocked.
1)
POSITION CONTROL does not
work
- Safety mode active,
check for D on display?
- Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.