Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
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
267736ED
2008-02-26
33/53
3.11.3 Digital outputs
Pin Function Signal type
Description
8
VALVE OPEN
SERVICE REQUEST
Digital
output
1)
This output is active in all operation modes and indicates either that the
valve is open or that a service is requested.
A service request is indicated when the valve requires cleaning due to
contamination.
Configuration of the functionality of this output can be done in local
operation via service port.
By default the output indicates open
9
VALVE CLOSED
SERVICE REQUEST
Digital
output
1)
This output is active in all operation modes and indicates either that the
valve is close or that a service is requested.
A service request is indicated when the valve requires cleaning due to
contamination.
Configuration of the functionality of this output can be done in local
operation via service port.
By default the output indicates close
22
ALARM
Digital
output
1)
The meaning of the alarm output depends on the operation mode.
LEARN:
LEARN is not completed yet.
PRESSURE CONTROL:
Actual pressure is out of ±2% range of SETPOINT
POSTION CONTROL:
Actual position is out of ±0.1% range of SETPOINT
21 READY
Digital
output
1)
This signal indicates that the valve is ready for remote operation.
If this signal is not active the valve is in one of the following modes:
• Synchronization during power up
• Local operation via service port
• Safety mode. Refer to «Safety mode» for details.
20
COMMON
Digital
common
Common for all digital outputs.
1) Refer to «Function and wiring» for details about output circuit.
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