Trouble Shooting - VAT 650 Series Installation, Operating, & Maintenance Instructions

4

Trouble shooting

Failure
No dots lighted on display
Remote operation (Interface) 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)
POSITION CONTROL does not
work
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com
Installation, Operating & Maintenance Instructions
Series 650, DN 250 (I.D. 10"), RS232
Check
- 24 V power supply ok?
- Local operation via service
port active?
- Valve plate proper mounted?
- Valve plate proper mounted?
- Valve unit heavy
contaminated?
- Valve plate mechanically
obstructed?
- Valve unit heavy
contaminated?
- Valve plate mechanically
obstructed?
- POSITION CONTROL
selected, check for V on
display?
Action
- Connect valve to power supply according to
«Electrical connection» and make sure that power supply is
working.
- Switch to remote operation.
- Replace control and actuating unit according to
« Maintenance procedure ».
- Adjust valve plate according to
«Maintenance procedure».
- Clean valve unit according to
« Maintenance procedure ».
- Resolve obstruction.
- Clean valve unit according to
« Maintenance procedure ».
- Resolve obstruction.
- Replace control and actuating unit according to
« Maintenance procedure ».
- Select POSITION CONTROL.
Refer to «RS232 control commands» for details.
www.vatvalve.com
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2010-04-17