Delta HES Series User Manual page 37

Chapter 3 Flow of machine Adjustment|HES Series
Step 3.Check Pressure Feedback Signal
Firs, set input voltage Pr. 00-04 = 11 PO
Selection of Display Mode
Pr. 00-04
Set Pr. 00-08=corresponding pressure settings of the 10V pressure sensor
Maximum value of pressure feedback
Pr. 00-08
Set speed command to 10rpm and press【RUN】. Check the pressure value is >0 on the
pressure gauge.
When the pressure value is ≦ 0,
Gradually increase the rotation speed.
Check that each directional valve is closed.
When the pressure value is ＞0
Check that the voltage reading displayed on the operation panel is consistent with the
pressure reading on the pressure gauge.
Example:
reading is 50 bar, the output voltage on the pressure sensor should be
approximately 50/250*10=2V. So the voltage displayed on the operation panel will
be 20.0(%).
Meanwhile, observe if there is any oil leak.
Step 4. Check Pressure and Flow Commands
This action does not need to start the servo oil pump.
For the firmware version is 2.04 and above, theoretical values of three-point calibration of
pressure and flow commands are auto-imported after entering HES ID code. Afterward,
detailed adjustment can be proceeded with the following methods.
Pr. 00-09 = 1 refers to the pressure control mode
Pressure Control Mode
Pr. 00-09
Pr. 00-04 = 12 sets the PI input voltage
Selection of Display Mode
Pr. 00-04
Pr. 00-07 = corresponding pressure value with 10V on the pressure controller command
Maximum pressure command
Pr. 00-07
With the maximum pressure set by the controller, observe the associated value displayed
on the operation panel and set it to 00-14.
With the controller setting at half the maximum pressure, observe the associated value
11: Display the signal of PO analog input terminal, with 0~10V
corresponding to 0~100%.
0~250Bar
10V on the pressure sensor corresponds to 250bar. When the pressure gauge
0: Speed control
1: Pressure control
12: Display the signal value of the PI analog input terminal, with
0~10V corresponding to 0~100%.
0~250Bar
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