Series 642
TROUBLE SHOOTING
813316EB
Edition 2017-11-24
81/107
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)
-
Replace actuator according to
«Maintenance procedures».
Display shows «E 21»
(fatal error - rotation angle of valve
plate limited – power up)
-
Valve plate mechanically
obstructed?
-
Resolve obstruction.
Display shows «E 22»
(fatal error - rotation angle of valve
plate limited - operation)
-
Valve plate mechanically
obstructed?
-
Resolve obstruction.
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 heavily 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.
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.
-
POSITION CONTROL
selected, check for V on
display?
-
Select POSITION CONTROL mode.
Refer to «Position control» for details.
Pressure reading is wrong
or
pressure reading is negative
-
Sensor(s) connected?
-
Refer to «Electrical connection».
-
2 sensor version present at
valve controller?
-
Check valve version on page 1. Verify configuration.
Refer to «Setup procedure».
-
Refer to «Pressure control operation with 2 sensors».
-
ZERO done?
-
Perform ZERO when base pressure is reached. Refer to
«ZERO» for details.
