7.4.5
Pressure Drop / Overshoot Compensation
Pressure drop / overshoot compensation function helps to compensate the
incoming pressure drop or overshoot by previously changing pressure com‐
mand with digital from customer PLC.
Code
Name
Setting range
Default
Min.
Attri.
F2.16
...
F2.24
X1...EX4 input
0...19
20: Pressure drop compensation trigger
21: Pressure overshoot compensation
trigger
0
-
Stop
F4.03
Pump function control word
0...31
Bit0: Pump power limit
Bit1: Pump thermal protection
Bit2: Switch master to slave
Bit3: Two points / double pump
Bit4: Pressure drop / overshoot compen‐
sation
0
-
Run
F4.45
Pressure boost for drop compen‐
sation
0.0…1,000.0 bar
0.0
0.1
Run
F4.46
Pressure reduce for overshoot
compensation
-1,000.0…0.0 bar
0.0
0.1
Run
Tab. 7-20:
Parameter list of pressure drop / overshoot compensation
Set control bit: bit4 of F4.03 to active this function, and configure the corre‐
sponding digital input Xn to 15 or 16 for compensation command (from cus‐
tomer PLC). For a high input (=1), the pressure command will be modified
with the value from F4.45 / F4.46. If the digital input is 0, the effective pres‐
sure command value will be reset to original.
The switch time of digital input should be optimized according to application.
Fig. 7-31:
F4.45: Pressure boost for drop compensation
DOK-SYTROX-FCP5020****-IT01-EN-P
Bosch Rexroth AG
105/201
Frequency-controlled pump drive system Sytronix FcP 5020
Commissioning of Sytronix FcP 5020 System
