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H: Operating Frequency
P: The Actual Pressure of Pump Outlet
L: The Set Pressure of Pump Outlet
A: Output current
D: DC Bus Voltage
U: Output Voltage
4.2 Operation Procedure
Power-on Initialization
When power is switched on the system initializes and LED displays controller model.
After the initialization is completed, the controller switches to stand-by mode.
Parameter Setting
Three levels of menu are available as below:
1. Primary Interface first-level function code
2. Second-level function code
3. Function code setting value third-level function code setting value
Ÿ Press <</SHIFT or >>/SHIFT to switch to display running/stop status
monitoring parameters.
Ÿ At the primary interface, press PRG/ESC to enter the first-level menu then press
PRG/ESC to return to the primary interface.
Ÿ At the first-level menu, press DATA/ENT to enter the second-level menu. Second-
level menu press PRG/ESC and DATA/ENT to return to first-level menu or enter
third-level menu.
Ÿ At third-level menu, press both PRG/ESC and DATA/ENT to return to the second-
level menu the difference being by:
Ÿ Pressing DATA/ENT the controller save the parameters in the controller
and returns to the second-level menu with shifting to the next function code
automatically.
Ÿ Pressing PRG/ESC will return immediately to the second-level menu without
saving the parameters; and stay at the current function code.
Example 1: Change factory pressure setting 3.0 bar to 2.5 bar
Method 1: Enter parameter setting
7
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