Mitsubishi Electric FR-E700 Instruction Manual page 68

Connection of stand-alone option units
Connection example with the FR-BR(-H) type resistor
3-phase AC
power supply
Fig. 3-24: Connection with the brake unit FR-BU2
If the control contacts are only specified for 230V control power you must install a transformer
when using a 400V power supply.
Normal: across TH1-TH2 ... close, Alarm: across TH1-TH2 ... open
Connect the inverter terminals (+, −) and brake unit terminals so that their terminal signals
match with each other. (Incorrect connection will damage the inverter.)
A jumper is connected across BUE and SD in the initial status.
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 10m.
b
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 + and P1 except when connecting a DC
reactor.
3 - 34
T
Inverter
Motor
M
3~
≤ 5m
Wiring
ON
OFF
002045E