Mitsubishi Electronics FR-S500 instruction manual Connection to the Stand-Alone Option

Connection to the Stand-Alone Option

1.6 Connection to the Stand-Alone Option

The inverter accepts a variety of stand-alone option units as required.

Incorrect connection will cause inverter damage or accident. Connect and operate the option unit carefully in accordance with the corresponding option unit manual.

1.6.1Connection of the brake unit (BU type)

Connect the BU type brake unit correctly as shown below. Incorrect connection will damage the inverter. Remove jumpers across terminals HB-PC and TB-HC and connect a jumper across terminals PC-TB of the brake unit.

NFB

MC

Inverter

Motor

R/L1

U

Power

S/L2

V

IM

supply

T/L3

W

T(Caution 4)

(Caution 3)

P/+

N/-

MC

ON

Discharge resistor

OFF

Remove

Connect a

MC

jumper.

jumpers.

N

PC HA

HB

HC TB

P

PR

OCR

BU(-H) type brake unit

OCR

CAUTION

1.The wiring distance between the inverter, brake unit and discharge resistor should be within 2m. If twisted wires are used, the distance should be within 5m.

2.If the transistors in the brake unit should become faulty, the resistor can be unusually hot, causing a fire. Therefore, install a magnetic contactor on the inverter's power supply side to shut off a current in case of fault.

3.The N terminal is not provided for the FR-S520E-0.1K to 0.75K.

4.When the power supply is 400V class, install a step-down transformer.

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