Mitsubishi Electric fr-e700 series, Instruction Manual

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Connection of stand-alone option units Wiring
3 - 44
Connection example with the FR-BR(-H) type resistor
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If the control contacts are only specified for 230 V control power you must install a transformer
when using a 400 V power supply.
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Normal: across TH1-TH2 ... close, Alarm: across TH1-TH2 ... open
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Connect the inverter terminals (P/+, N/ ) and brake unit terminals so that their terminal signals
match with each other. (Incorrect connection will damage the inverter.)
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A jumper is connected across BUE and SD in the initial status.
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The wiring distance between the inverter, brake unit and resistor unit should be within 5m. If
twisted wires are used, the distance should be within 10 m.
002045E
Fig. 3-38: Connection with the brake unit FR-BU2
E
CAUTION:
●
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 inverters input side to configure
a circuit so that a current is shut off in case of fault.
●
Do not remove a jumper across terminal P/+ and P1 except when connecting a DC reactor.
ON
3-phase AC
power supply
OFF
Inverter
5 m
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M
3~
Motor
햴
햳
햴
햵
T
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