Delta VFD450VL43A-J

3. Machine Adjustment Procedure
3-11
 After the operation stops, select the Parameter 01-32 and press the [PROG/DATA] button to
complete the “write” operation.
 Set Parameter 01-31=1 and the estimation of the motor’s inertia is complete.
Step 3. Connect the motor and the pump and then confirm the pressure feedback
signal
 Set the Parameter 00-04 = 11 and then supply voltage to PO
Selection of multi-function display
Setting value
of Parameter
00-04
11: display the signal value of the analog input terminal PO with 0~10V
mapped to 0~100%
 Parameter 00-08 = related pressure setting value of the pressure sensor at 10V
Maximum pressure feedback value
Setting value
of Parameter
00-08
0~250Bar
 Set the speed command as 10rpm and press [RUN] to confirm if the pressure value through
the pressure gauge > 0.
If the pressure value 0≦
; Gradually increase the rotation speed
; Confirm the operation direction of the pump
; Make sure that the direction valve is in the close state
If the pressure value > 0
; Make sure the multi-function display on the keypad panel shows the voltage indicating the
same pressure as the pressure gauge
Example: If the pressure sensors indicates 250bar at 10V, when the pressure gauge shows 50
bar, the pressure sensor output voltage should be around 50/250 * 10 = 2V, and the
voltage shown on the keypad panel should be 20.0 (%)
 Observe if there is oil leakage.
Step 4. Confirm the pressure command and flow command
 Parameter 00-09 = 1 for pressure control mode
Pressure control mode
Setting value
of Parameter
00-09
0: Speed control
1: Pressure control
 Parameter 00-04 = 12 PI for input voltage
Selection of multi-function display
Setting value
of Parameter
00-04
12: display the signal value of the analog input terminal PI with 0~10V
mapped to 0~100%