Connection Of The Dc Reactor (Fr-Hel) - Mitsubishi Electric 700 Series Instruction Manual

Connection of stand-alone option unit
(2) Connection example with the FR-BR(-H) type resistor
Three-phase AC
power supply
∗1
Connect the inverter terminals (P/+ and N/-) and brake unit (FR-BU2) terminals so that their terminal names match
with each other.
(Incorrect connection will damage the inverter and brake unit.)
∗2
When the power supply is 400V class, install a step-down transformer.
∗3
The wiring distance between the inverter, brake unit (FR-BU2) and resistor unit (FR-BR) should be within 5m. Even
when the wiring is twisted, the cable length must not exceed 10m.
∗4
Normal: across TH1-TH2...close, Alarm: across TH1-TH2...open
∗5
A jumper is connected across BUE and SD in the initial status.
NOTE
Do not remove the jumper across terminals P/+ and P1 except when connecting a DC reactor.
2.4.3

Connection of the DC reactor (FR-HEL)

When using the DC reactor (FR-HEL), connect it across terminals P/+ and P1.
In this case, the jumper connected across terminals P/+ and P1 must be removed. Otherwise, the reactor will not exhibit its
performance.
NOTE
The wiring distance should be within 5m.
The size of the cables used should be equal to or larger than that of the power supply cables (R/L1, S/L2, T/L3). (Refer
to page 17)
28
MCCB MC
R/L1
S/L2
T/L3
Remove the jumper.
∗2
T
MC
Motor
U
V IM
W
∗3
Inverter
P/+
∗1
N/-
∗3
5m or less
P1 P/+
FR-HEL
ON OFF
MC
FR-BR
∗4
P
TH1
PR
TH2
FR-BU2
PR
A
P/+ B
∗1
N/- C
BUE
∗5
SD