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4
Trouble shooting
Failure
No dots lighted on display
Remote operation does not work
Display shows « E 20 »and position is
009999
( fatal error - limit stop of valve unit not
detected)
Display shows « E 21 »and position is
009999
( fatal error - rotation angle of valve
plate limited during power up)
Display shows « E 22 »and position is
009999
( fatal error - rotation angle of valve
plate limited during operation)
Display shows « E 40 »and position is
009999
( fatal error - motor driver failure
detected)
Display shows « D 0 »
Motor Interlock is open
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com www.vatvalve.com
Installation, Operating & Maintenance Instructions
Series 612 DN 40 (I.D. 1.5"), RS485
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?
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 «Tightening
torque» for details.
RESET or restart of valve is necessary.
- Adjust valve plate according to
«Maintenance procedure».
- Clean valve unit according to
«Maintenance procedure».
- Resolve obstruction.
- Reset control unit. Cycle power
(OFFàON)
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
(OFFàON)
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.
289917EA
2011-07-07
51/69
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