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Connection of stand-alone option units
When the brake unit (FR-BU2, FR-BU, BU), power regeneration converter (MT-RC)
*1
(FR-HC2)
, or multifunction regeneration converter (FR-XC)
use terminal P3.)
The following diagram shows the connection example with the FR-BU2 (GRZG type discharging resistor).
Three-phase AC
power supply
*1
The motor with a frame number 250 or larger is supported.
MCCB
MC
Connection example with the FR-BU2 (GRZG type discharging resistor)
*1
is connected, use terminal P/+ of the inverter. (Do not
T
MC
Motor
U
R/L1
External thermal
relay
V
S/L2
M
W
T/L3
Inverter
PR
P/+
PX
N/-
10 m or less
3
*1
, high power factor converter
OCR
contact
ON
OFF
MC
GRZG type
discharging
OCR
resistor
R
R
FR-BU2
PR
A
P/+
B
N/-
C
BUE
SD
BCN-C22005-973
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