Input Signal Adaptation; Sys_Range (System Pressure); Aratio (Cylinder Area Ratio); Preset:q (Internal Preset Value) - W.E.ST. PQ-132-U Technical Documentation Manual

5.4 Input signal adaptation

5.4.1

SYS_RANGE (System pressure)

Command
SYS_RANGE X
This command defines the pressure, which corresponds to 100 % of the input signal. If the demand is set
incorrectly, this leads to incorrect system settings, and the dependent parameters cannot be calculated
correctly.
5.4.2

ARATIO (Cylinder area ratio)

Command
ARATIO
In order to limit the output force in either direction correctly the parameter ARATIO provides the ratio of the two
surfaces of the cylinders piston.
Accordingly, a corresponding entry of the value A (ARATIO) of 1000 a ratio of A / B = 1000/1000
For example: surface ratio A/B = 2.08:
surface ratio A/B = 0,5:
surface ratio A/B = 1:
This parameter is used to calculate a pseudo differential pressure which, multiplied by the larger of the two
surfaces, yields the resulting force. This value becomes negative for forces in direction "B".
5.4.3

PRESET:Q (Internal preset value)

Command
PRESET:Q
This parameter is entered in 0,01%.
Alternative to the analog input the flow can be specified as a
off with SIGNAL: Q = OFF, the configured value in PRESET: Q gets active.
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Parameters
x= 10... 1000
Parameters
X x= 200... 5000
A divisor of 1000 for area B to set base.
ARATIO has to be set on 2080
ARATIO has to be set on 500
ARATIO has to be set on 1000
Parameters
0... 10000
Unit
bar
Unit
-
Unit
0,01%
parameter. When the analogue input is switched
PQ-132-U
Group
STD
Group
EXP
Group
STD
05.06.2020