Trouble Shooting - VAT 642 Series Installation, Operating, & Maintenance Instructions

6

Trouble shooting

Failure
No dots lighted on display
Remote operation does not
work
Display shows «E 20»
(fatal error - limit stop of valve
unit not detected)
Display shows «E 21»
(fatal error - rotation angle of
valve plate limited during power
up)
Display shows «E 22»
(fatal error - rotation angle of
valve plate limited during
operation)
Display shows «E 40»
(fatal error - motor driver failure
detected)
Display shows «D 0»
Motor Interlock is open
Display shows «SR»
(Service Request)
Display shows «M C»
Maintenance mode active
Display shows «M100»
Maintenance mode active
POSITION CONTROL does not
work
1)
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.
68/94
TROUBLE SHOOTING
Check
- 24 V power supply ok?
- Local operation via
service port active
- Safety mode active,
check for D on display?
- Clamp coupling screw not
fastened?
- Valve plate centric
adjusted?
- Valve unit heavy
contaminated?
- Valve plate mechanically
obstructed?
- Valve unit heavy
contaminated?
- Valve plate mechanically
obstructed?
- Motor power supplied?
- Valve unit heavy
contaminated?
- Safety mode active,
check for D on display?
- POSITION CONTROL
selected, check for V on
display?
Edition 2017-11-24
Action
- Connect valve to power supply according to
«Electrical connection» and make sure that power
supply is working.
- Switch to remote operation.
- Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.
- Tighten screw. Refer to chapter «Maintenance» for
details.
- Adjust valve plate according to
«Maintenance procedure».
- Clean valve unit according to
« Maintenance procedure ».
- Resolve obstruction.
- Reset control unit. Cycle power (OFF ON)
or
- Send reset command: local via service port with
CV/CPA/Service Box2
- Clean valve unit according to
«Maintenance procedure».
- Resolve obstruction
- Reset control unit. Cycle power (OFF ON)
or
- Send reset command: local via service port with
CV/CPA/Service Box2
- Replace control and actuating unit according to
«Maintenance procedure».
- Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.
- Clean valve unit according to
«Maintenance procedures».
- Reset control unit. Cycle power (OFF ON)
or
- Send reset command: local via service port with
CV/CPA/Service Box2
- Pin 14 of service connector is connected to ground.
Plate will close. Further movement of plate is
1)
blocked.
- Pin 13 of service connector is connected to ground.
Plate will open. Further movement of plate is
1)
blocked.
- Provide power to motor to allow for operation.
- Refer to «Electrical connection» for details.
- Select POSITION CONTROL mode.
Refer to «Position control» for details.
Series 642
605403ED