VAT 642 Series Installation, Operating, & Maintenance Instructions page 46

4.6.2.3 Fixed 1 control algorithm
Parameter
RAMP TIME
RAMP MODE
CONTROL
DIRECTION
P-GAIN
I-GAIN
Explanation:
RAMP TIME
Pressure setpoint ramp time [s]
RAMP MODE
Mode = 0
Constant Time
Mode = 1
Constant Slope
CONTROL DIRECTION
The CONTROL DIRECTION defines the type of application, if the valve is mounted in downstream or
upstream. Downstream means the valve is after the chamber and before the pump. Upstream, valve is
mounted before chamber and pump.
P-GAIN / I-GAIN
The P-GAIN is the proportional factor of the fixed control algorithm. The I-GAIN is the integral factor.
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INSTALLATION
Command Request
Set s:02B01c s:02
Get i:02B01 i:02B01c
Set s:02B02c s:02
Get i:02B02 i:02B02c
Set s:02B03c s:02
i:02B03c
Get i:02B03
s:02B04c
Set s:02
Get i:02B04 i:02B04c
Set s:02B05c s:02
i:02B05c
Get i:02B05
The RAMP TIME is dependent on the adjusted parameter ramp time and is
always the same independent of the control deviation. That means the ramp
time from the actual value to the setpoint value is the adjusted parameter ramp
time value.
The RAMP TIME is dependent on the adjusted parameter ramp time and is
different depending on the control deviation. The RAMP TIME is calculated
corresponding to the sensor full scale value (10V). Ramp time = 10 sec.; ramp
time slope is SFS (10V) in 10 Seconds.
Edition 2017-11-24
Data Type Values
c = 0.00...1
FLOAT
Default is: 0.00
c = 0 or 1
0 = constant time
UINT
1 = constant slope
Default is: 0
c = 0 or 1
0 = downstream
UINT
1 = upstream
Default is: 0
c = 0.001...100
FLOAT
Default is: 0.1
c = 0...100.0
FLOAT
Default is: 0.1
Series 642
000 000.0
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