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Name (model)
Brake unit
FR-BU2-(H)
K
Resistor unit
FR-BR-(H)
K
Discharging resistor
GZG type
GRZG type
61
Connection diagram
NCCB
MC
Three-phase
AC power supply
A jumper is connected across BUE and SD in the
initial status.
When wiring, make sure to match the terminal
symbol (P/+, N/-) at the inverter side and at the
brake unit (FR-BU2) side. Incorrect connection will
damage the inverter.
Remove the jumper across the terminals P/+ and
P1 only when a Filterpack or DC reactor is
connected. Do not remove the jumper in other
cases.
When the power supply is 400V class, install a step-
down transformer.
Outline dimension
[FR-BU2]
W
D
(Unit mm)
Model
W
H
FR-BU2-1.5K to 15K
68
128
FR-BU2-30K
108
128
FR-BU2-H7.5K, H15K
68
128
FR-BU2-H30K
108
128
Specification and Structure
ON
T
*3
MC
MC
Resistor unit or
Inverter
discharging resistor
U
Motor
R/L1
P
V
S/L2
M
PR
T/L3
W
PR
A
B
P/+
P/+
* 2
C
N/-
N/-
* 2
RES
Reset
BUE
* 1
Brake permission signal
SD
MSG
Signal for
SD
master/slave
MSG
SD
Brake unit
FR-BU2
[GZG,GRZG]
W
D
Model
W
D
GZG300W
335
40
132.5
GRZG200
306
26
129.5
GRZG300
334
40
132.5
GRZG400
411
40
129.5
OFF
Resistor unit or
discharging resistor
P
PR
PR
P/+
N/-
* 2
RES
BUE
SD
MSG
SD
MSG
SD
Brake unit
FR-BU2
When connecting
several brake units
[FR-BR]
D
H
D
W
(Unit mm)
H
Model
W
78
FR-BR-15K
170
55
FR-BR-30K
340
79
FR-BR-H15K
170
79
FR-BR-H30K
340
A
B
C
* 1
(Unit mm)
H
D
450
220
600
220
450
220
600
220
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