Installation, Operating & Maintenance Instructions
Series 612 DN 250 (I.D. 10”), EtherCAT
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
282408EB
2012-04-23
61/81
LEARN STATE bitmap table:
Bit
Set Description
Possible Reason
0
LEARN RUNNING
Learn procedure is running
1
LEARN DATA WRONG
Learn data are faulty
Check happens once after power up of the valve
Learn not performed
Learn data incomplete
2*
LEARN TERMINATED
BY USER
Learn procedure was terminated by the
customer/user
3*
HIGH PRESSURE
VALUE AT POSITION
„OPEN“
Pressure at position “Open” > 50% of
MAXIMUM LEARN PRESSURE
Too much gas-flow
Pump is powered off
Chamber leakage
4*
LOW PRESSURE
VALUE AT POSITION
„0“
Pressure at position “0”
< 10% of
MAXIMUM LEARN PRESSURE
Too less or no gas-flow
5*
PRESSURE DECREASE
Pressure decreases during learn
Pressure must increase continuously when moving towards the
close position within the learn procedure.
Instability of sensor signal
Instability of gas-flow
6*
PRESSURE
INSTABILITY
20% pressure deviation at position “Open”
between start and end of learn procedure
Instability of sensor signal
Instability of gas-flow
7-9
NOT USED (reserved)
-
10*
LEARN TERMINATED
BY PROGRAM
Pressure >
MAXIMUM LEARN PRESSURE
at
position “Open”
Too much gas-flow
Pump is powered off
Chamber leakage
11*
PRESSURE AT
POSITION „OPEN“
NEGATIV
Negative pressure during learn procedure
No gas-flow
Zero adjust executed at gas-flow
Instability of sensor signal
12-15
NOT USED (reserved)
-
* Bits keep their status until a new learn procedure will start or until power off.
* These bits indicate any possible warnings during the learn procedure. The generated learn data must not necessarily be unusable.
