VAT 653 Series - Pressure Control Algorithem

INSTALLATION Series
65
84/129 Edition 2019-05-03 963283EA
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
4.11.5 Pressure control algorithem
4.11.5.1 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]