Installation, Operating & Maintenance Instructions
Series 612 DN 40 (I.D. 1.5”), 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
289917EA
2011-07-07
52/69
Failure
Check
Action
Display shows «
SR»
(Service Request)
Valve unit heavy contaminated? Or gate
seal is sticking.
- Clean valve unit according to
«Maintenance procedures».
- Reset control unit. Cycle power
(OFFàON)
or
- Send reset command: local via service
port with CV/CPA/Service Box2
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.
Note: 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.
Display shows «
M100»
Maintenance mode active
Pin 13 of service connector is connected
to ground. Plate will open. Further
movement of plate is blocked.
Pressure reading is wrong
or
pressure reading is negative
- Sensor(s) connected?
- 2 sensor version present at valve
controller?
- ZERO done?
- Does sensor power supply provide
enough power for sensor(s)?
- Refer to «Electrical connection».
- Check valve version on page 1. Verify
configuration. Refer to «Setup
procedure».
- Perform ZERO when base pressure is
reached. Refer to «ZERO» for details.
- Verify sensor supply voltage.
ZERO does not work
- Valve in open position, check for O on
display?
- ZERO disabled?
- OPEN VALVE and bring chamber to
base pressure before performing
ZERO.
- Enable ZERO. Refer to «Valve
configuration» for details.
