6
Circuit Breaker
It is necessary to connect a suitable circuit breaker between AC power supply and the
Pumpverter. The capacity of breaker should be 1.5~2 times the rated current of
controller.
AC Reactor (Optional)
In order to prevent the rectifier damage resulted from the large current, AC reactor
should be installed at the input side. It can also prevent rectifier from sudden variation of
power voltage or harmonic generated by phase-control load.
Input EMC Filter (Optional)
EMC filter can minimize the interference of the surrounding device which may be
disturbed by the cables when the controller is working.
Output EMC Filter (Optional)
EMC filter should be installed to minimize the current leakage caused by the cable and
minimize the radio noise caused by the cables between the controller and motor.
Output Reactor (for long motor cables)
When the distance between the Pumpverter and motor is more than 50m, the controller
may be tripped by over-current protection frequently because of the large current
leakage resulting from the parasitic capacitance with ground. In order to avoid the
damage of motor insulation, the output reactor should therefore be installed.
4. OPERATION
4.1 Keypad Description
Figure 4: Keypad Schematic Diagram
