Connection Of The Brake Unit (Fr-Bu-C); Connection Of The Power Factor Improving Dc Reactor - Mitsubishi Electric FR-V560 Instruction Manual

Connection of stand-alone option units
1.6.2

Connection of the brake unit (FR-BU-C)

Connect the optional FR-BU-C brake unit as shown below to improve the braking capability during deceleration.
Power
supply
CAUTION
1. Connect the inverter terminals (P, N) and FR-BU-C brake unit terminals so that their terminal signals
match with each other. (Incorrect connection will damage the inverter.) For the 7.5K or less model, the
jumper across terminals PR-PX must be removed.
2. The wiring distance between the inverter, brake unit and resistor unit should be within 5m (16.40
feet). If twisted wires are used, the distance should be within 10m (32.80 feet).
3. If a transistor in the brake unit should become faulty, the resistor can be unusually hot. Therefore,
install a magnetic contactor on the inverter's power supply side to shut off a current in case of fault.
4. Install a voltage-reducing transformer.
1.6.3

Connection of the power factor improving DC reactor

When using the power factor improving DC reactor, connect it between terminals P1-P. In this case, the jumper
connected across terminals P1-P must be removed. Otherwise, the reactor will not exhibit its function.
CAUTION
1. The wiring distance should be within 5m (16.40 feet).
2. The size of the cables used should be equal to or larger than that of the power supply cables (R, S, T).
T (Caution 4)
MC
R U
S V
T W
Inverter
PR P
Remove
jumper.
PX
N
P1
P/{
Remove
the jumper.
12
Motor
IM
PR
PR
HA
P/+
HB
N/-
HC
Resistor unit
FR-BR-C
Brake unit
FR-BU-C
P
ON
M
OFF
MC
P
TH1
THS TH2