VAT 642 Series User Manual

Series 642 INSTALLATION
742280ED Edition 2017-11-24 75/
119
Command examples:
Set GAIN FACTOR of the adaptive
pressure controller to the value 1.075
s:02A041.075
GET GAIN FACTOR of adaptive
pressure controller
i:02A04  Answer is i:02A041.075  Value = 1.075
Set RAMP TIME of soft pump pressure
controller to the value 281 seconds
s:02D01281
Get RAMP TIME of soft pump pressure
controller
i:02D01  Answer is i:02D01281 Value = 281
4.8.5 Pressure control algorithem
4.8.5.1 Adaptive control algorithm (downstream)
Parameter Command Request Data Type Values
SENSOR
DELAY
Set
s:02A00c
s:02
FLOAT
c = 0.00…1.00
Default is: 0.00 s
Get i:02A00
i:02A00c
RAMP TIME
Set
s:02A01c
s:02
FLOAT
c = 0.00…1 ’ 000 ’ 000.0
Default is: 0.00 s
Get i:02A01
i:02A01c
RAMP MODE
Set
s:02A02c
s:02
UINT
c = 0 or 1
0 = constant time
1 = constant slope
Default is: 0
Get i:02A02 i:02A02c
GAIN
FACTOR
Set
s:02A04c
s:02
FLOAT
c = 0.0001…7.5
Default is: 1.0
Get i:02A04
i:02A04c
Explanation:
SENSOR DELAY
Sensor response time [s]
The SENSOR DELAY is a control parameter to compensate delays during the pressure detection. Pipes
and orifices for sensor attachment can cause delays in response time and could impact badly the
pressure control stability. By adapting this parameter to the approximate delay time stability problems can
be reduced. But control response time will be slowed down by this measure.
RAMP TIME
Pressure setpoint ramp time [s]

VAT 642 Series Specifications

General

Brand	VAT
Model	642 Series
Category	Control Unit
Language	English