EM-0146-8
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51
Table 6.7m Parameter Functions
No.
Name
Function/Use
Default
Setting Range
P443 Q-damping
Gain
0
- 999 to 9999
P444 Q-damping
filter
Detects the motor speed during pressure control and adds its
derivative to pressure control.
This function is effective when the pressure trackability is not
good due to a large compression volume on the load side.
- Q-damping Gain: Sets the sensitivity added to pressure
control in relation to the change described above.
- Q-damping Filter: Filters the return of Q-damping control
signals to keep the function effective against sudden
changes.
1
1 to 2000
P449
Number of Combined
Units
1
1 to 16
P450 QIN
Mini
Inputs the required number of units for combination use.
Sets the lower limit of the motor speed in relation to flow (motor
speed) command voltage.
It prevents reverse rotation of the pump due to command
voltage variations caused by noise or due to improper
operation/input.
e.g.) If the parameter is set to 10 (1.0 %) with a rated motor
speed of 2000 rpm, the minimum motor speed is 20 rpm.
10
0 to 1000 × 0.1 %
Motor Speed
[r/min]
Gain
Filter
Q-damping Signal
0.0
20
0.05
Motor Speed
[rpm]
5.0 [V]
100.0 [%]
[1.0]
Setting Value
of Command
Voltage
2000
