PIM00587
EN-76
11.7
Pressure Retention Stability and Pressure Responsiveness
Adjustment Function
If the parameter “P59: PQ control method selection” is set
t
o “1” and “
P58: Load volume setting
”
is
changed, the Eco Rich R vibration during holding pressure will be improved or the pressure response will
be faster.
11.7.1
Preparation
1.
Connect the hydraulic unit to the hydraulic circuit of the machine tool and close the
discharge port.
●
Close the circuit to minimize hydraulic circuit volume and leakage.
●
The pressure reducing valve near the discharge port of the hydraulic unit should be set to the
minimum pressure.
2.
Set the parameter
“
P59: PQ control method selection
”
to 1(control B)
3.
Set the parameter
“
P58: Load Volume Setting
”
to factory default value 3
4.
Turn off the power supply of the hydraulic unit once, confirm that the display on the panel
turns off, and turn the power on again.
●
You can change the control by restarting the hydraulic unit.
5.
Confirm that the parameter
“
P59:PQ control method selection
”
is 1(control B).
6.
Set the parameter
“
P58:load volume setting
”
. If the P58 value is large, the response will be
quick, but if it is excessive, the hydraulic unit may vibrate. If the P58 value is small, the
response will be slow, but the pressure at the time of holding pressure will be stable. Refer
to the table below for a guideline of the value.
11.7.2
The Criterion of P58:load volume setting
The total length of the discharge port. (size is 3/8)
The Criterion of P58 : load volume setting
2m than less
0 to 2
2m - 10m
2 to 7
10m over
5 to 18
