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Connection of stand-alone option unit
(2) Connection example with the FR-BR(-H) type resistor
Three-phase AC
power supply
Connect the drive unit terminals (P/+ and N/-) and brake unit (FR-BU2) terminals so that their terminal names match with each other. (Incorrect connection
will damage the drive unit and brake unit.)
When the power supply is 400V class, install a step-down transformer.
The wiring distance between the drive unit, brake unit (FR-BU2) and resistor unit (FR-BR) should be within 5m each. Even when the wiring is twisted, the
cable length must not exceed 10m.
The contact between TH1 and TH2 is closed in the normal status and is open at a fault.
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 (FR-HEL).
30
MCCB
MC
R/L1
S/L2
T/L3
T
MC
Motor
U
IM
V
W
Drive unit
P/+
N/-
10m or less
ON
OFF
MC
FR-BR
P
TH1
PR
TH2
FR-BU2
PR
A
P/+
B
N/-
C
BUE
SD
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