VAT 651 Series - Trouble shooting

Series 651
TROUBLE SHOOTING
605451EC Edition 2014-07-10 71/
99
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)
- Reset control unit. Cycle power (OFFON)
or
- Send reset command:
- local via service port with CV/CPA/Service Box2
- If reset unsuccessful, replace actuator according to
«Maintenance procedures».
Display shows «
E 22
»
(fatal error - rotation angle of valve
plate limited during operation)
- Valve plate mechanically
obstructed?
- Resolve obstruction.
- Reset control unit. Cycle power (OFFON)
or
- Send reset command:
- local via service port with CV/CPA/Service Box2
Display shows «
E 40
»
(fatal error - motor driver failure
detected)
- Replace control unit according to
«Maintenance procedures».
Display shows «
D C
» or «
D999
»
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 or gate seal
heavyly sticking?
- Clean valve and/or replace gate seal 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.
Priority of pin 14 is higher than pin 13. If pin 14 is
connected to ground after pin 13 the valve will close.
Ground of service connector is at pin 4 and 8.
Display shows «
M100
»
Maintenance mode active
- Pin 13 of service connector is connected to ground.
Plate will open. Further movement of plate is blocked.
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.
- POSITION CONTROL
selected, check for V on
display?
- Select POSITION CONTROL mode.
Refer to «Position control» for details.
COMPRESSED AIR FAILURE
«AIRf»
- No or too less air pressure on
air input of valve
- Connect air or increase air pressure. Make sure that the
air pressure is more than 4 bar (55 psi).
COMPRESSED AIR FAILURE at
Exhaust «AIRx»
- Wrong connection of
compressed air input and
output
- No compressed air at output
exhaust
- Connect compressed air in accordance chapter
installation.
- Contact your local VAT service center for support.