Installation, Operating & Maintenance Instructions
Series 612 DN 63-250 (I.D. 2.5“ - 10”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
289857EA
2011-07-13
57/76
4 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
- Safety mode active, check for D on
display?
- Switch to remote operation.
- Provide power to motor to allow for
operation.
- Refer to «Electrical connection» for
details.
Display shows «
E 20»and position is
009999
(
fatal error - limit stop of valve unit not
detected)
Clamp coupling screw not fastened?
Tighten screw. Refer to «Tightening
torque» for details.
RESET or restart of valve is necessary.
Display shows «
E 21»and position is
009999
(
fatal error - rotation angle of valve
plate limited during power up)
- Valve plate centric adjusted?
- Valve unit heavy contaminated?
- Valve plate mechanically obstructed?
- 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
Display shows «
E 22»and position is
009999
(
fatal error - rotation angle of valve
plate limited during operation)
- Valve unit heavy contaminated?
- Valve plate mechanically obstructed?
- 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
Display shows «
E 40»and position is
009999
(
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.
