Connection example. Mitsubishi Electric FR-HC2-7.5K

6

Connection example

Three-phase AC power supply

Use within the permissible power supply specifications of the converter.

Moulded case circuit breaker (MCCB), earth leakage current breaker (ELB), or fuse

The breaker must be selected carefully since an inrush current flows in the converter at power ON.

Magnetic contactor (MC)

Install the magnetic contactor to ensure safety.

Do not use this magnetic contactor to start and stop the high power factor converter and the inverter. Doing so will shorten the life of the inverter and the converter.

Reactor 1 (FR-HCL21)

Confirm that the capacity of the reactor is selected according to the capacity of the converter.

R4S4 T4

P N

Outside box (FR-HCB2)

∗

Check that the capacity of the outside box matches with the capacity of the high power factor converter.

∗

Outside box is not available for 280K or higher.

Connect filter capacitors, inrush current limit

resistors, and magnetic contactors.

Reactor 2 (FR-HCL22)

Confirm that the capacity of the reactor is selected according to the capacity of the converter.

High power factor converter

(FR-HC2)

Install and wire correctly.

Do not install the moulded case circuit breaker (MCCB) between terminals P and P, or N and N of the converter and the inverter.

Fuse

Installation of a fuse is recommended for safety.

Select a fuse according to the connected motor capacity.

(Refer to page 28)

Inverter

Confirm that this is a FR-HC2 supporting inverter.

(Refer to page 30)

Connect an inverter that corresponds with the each capacity of the converter.

Match the control logic (sink logic / source logic) of the converter and the inverter.

Devices connected to the output

Do not install a power factor correction capacitor, surge suppressor or radio noise filter on the output side of the inverter. When installing a moulded case circuit breaker on the output side of the inverter, contact each manufacturer for selection of the moulded case circuit breaker.

Earth (Ground)

To prevent an electric shock, always earth (ground) the motor and inverter.

Earth

(Ground)

Motor

Connect the motor corresponds to the each capacity.