VAT 653 Series Installation, Operating, & Maintenance Instructions page 47

Series 65
Parameter
Bank Selection
Pressure Limit [SFS]
Open Speed
Status
Warning Info
Parameter location:
CPA
Pressure Control.Adaptive Learn
Execute a learn procedure (via CPA):
1.
2.
3.
4.
5.
6.
982156EB
Description
Select one of four learn bank to place the result of the learn procedure.
Important: It's important that after the learn pressure controller select this
learn bank!
Set learn limit pressure (to which pressure the learn shall be executed).
The value is related to the sensor full scale of high sensor.
1.0 means the whole pressure range of the sensors
Define the speed for opening the valve during the learn procedure.
1.0 means full speed
State of the current learn
0:Not Started
1:In Progress
2:Completed Successfully
3:Aborted
4:Failed
Warning of current learn procedure:
Bit 0: Learn is running
Bit 1: Checksum error (learn data corrupt)
Bit 2: Learn procedure terminated by user
Bit 3: Pressure at position open > 50% of pressure limit
Bit 4: Pressure at minimal conductance position < 10 % of pressure limit
Bit 5: Pressure falls while move valve in direction of close
Bit 6: Pressure at open position does not match pressure of previous open
Bit 7: Learn procedure terminated by program
Bit 8: Pressure <= 0 at open position (no gas flow set?)
Set specific gas flow according to calculation below and wait until flow is stable. Learn does not
need to be performed with the process gas. Instead N
Set parameter Bank Selection, if only one learn is used take Bank 1. Be sure that the pressure
controller also selects this learn bank!
Set parameter Open Speed. If it's critical for the chamber, if the pressure falls rapidly while
opening the valve, reduce the open speed.
Set parameter Controller Mode = LEARN.
Wait till Controller Mode leave to LEARN state  Learn procedure is finished
Check if the learn was successful by checking if Status shows value 2 (=Completed
Successfully). In best case Warning Info shows no warning.
Sensor signal must not shift during LEARN. Wait until sensor signal is stable before
LEARN is performed. Learn may take several minutes. Do not interrupt the routine as
a single full run is required to ensure fast and accurate pressure control. The PID
controller covers 5% to 5000% of the gas flow which was used for learn.
Edition 2019-06-05
INSTALLATION
DEVICENET
Limited access in S-Single Stage Controller
(Class 51)
or Ar may be used.
2
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