3
BCN-C22005-973
Connection of stand-alone option units
When the brake unit (FR-BU2, FR-BU, BU), power regeneration converter (MT-RC)
*1
, high power factor converter
(FR-HC2)
*1
, or multifunction regeneration converter (FR-XC)
*1
is connected, use terminal P/+ of the inverter. (Do not
use terminal P3.)
The following diagram shows the connection example with the FR-BU2 (GRZG type discharging resistor).
*1
The motor with a frame number 250 or larger is supported.
U
V
W
P/+
N/-
R/L1
S/L2
T/L3
Motor
M
Inverter
PR
N/-
BUE
SD
P/+
A
B
C
FR-BU2
GRZG type
discharging
resistor
R
R
Three-phase AC
power supply
MCCB
MC
OFF
ON
MC
T
10 m or less
OCR
contact
MC
External thermal
relay
OCR
PR
PX
Connection example with the FR-BU2 (GRZG type discharging resistor)
BCN-C22005-973_ENG.fm 3 ページ 2021年9月7日 火曜日 午後4時43分