Features
Options
Precautions
Motor
Connection
example
Standard
specs.
Outline
dimensions
Parameter
list
Parameter
descriptions
Protective
functions
IPM motor
control
Compatibility
W
arranty
Te
rminal connection
diagrams
T
e
rminal specs.
Operation panel
Parameter unit
FR Configurator
63
Brake unit
FR-BU2-(H)
K
Resistor unit
FR-BR-(H)
K
Discharging resistor
GZG type
GRZG type
Provides a braking capability greater than that is provided by an external brake resistor. This option can also be connected to the inverters without
built-in brake transistors. Three types of discharging resistors are available. Make a selection according to the required braking torque.
Specification
[Brake unit]
[Discharging resistor]
[Resistor unit]
The 1 set contains the number of units in the parentheses. For the 400V class, 2 sets are required.
Combination between the brake unit and the resistor unit
The 1 set contains the number of units in the parentheses. For the 400V class, 2 sets are required.
Selection method
Name (model)
Specification and Structure
Model FR-BU2-
200V
400V
1.5K
3.7K
7.5K
15K
30K
H7.5K
H15K
H30K
Applicable motor capacity
The applicable capacity differs by the braking torque and the operation rate (%ED).
Connected brake resistor
GRZG type, FR-BR (For the combination, refer to the table below.)
Multiple (parallel) driving
Max.10 units (However, the torque is limited by the permissible current of the connected inverter.)
Approximate mass (kg)
0.9
0.9
0.9
0.9
1.4
0.9
0.9
1.4
Model
GRZG type
200V
400V
Model FR-BR-
200V
400V
GZG300W-
50
(1 unit)
GRZG200-
10
(3 units)
GRZG300-
5
(4 units)
GRZG400-
2
(6 units)
GRZG200-
10
(3 units)
GRZG300-
5
(4 units)
GRZG400-
2
(6 units)
15K
30K H15K H30K
Number of
connectable units
1 unit
3 in series
(1 set)
4 in series
(1 set)
6 in series
(1 set)
6 in series
(2 sets)
8 in series
(2 sets)
12 in series
(2 sets)
Discharging
resistor
combined
resistance (
)
8
4
32
16
Discharging
resistor combined
resistance (
)
50
30
20
12
60
40
24
Continuous
operation
permissible
power (W)
990
1990
990
1990
Continuous
operation
permissible power
(W)
100
300
600
1200
600
1200
2400
Approximate
mass (kg)
15
30
15
30
Brake unit model
Discharging resistor model or resistor unit model
GRZG type
FR-BR
Model
Number of
connectable units
200V
class
FR-BU2-1.5K
GZG 300W-50
(1 unit)
1 unit
FR-BU2-3.7K
GRZG 200-10
(3 units)
3 in series (1 set)
FR-BU2-7.5K
GRZG 300-5
(4 units)
4 in series (1 set)
FR-BU2-15K
GRZG 400-2
(6 units)
6 in series (1 set)
FR-BR-15K
FR-BU2-30K
FR-BR-30K
400V
class
FR-BU2-H7.5K
GRZG 200-10
(3 units)
6 in series (2 sets)
FR-BU2-H15K
GRZG 300-5
(4 units)
8 in series (2 sets)
FR-BR-H15K
FR-BU2-H30K
GRZG 400-2
(6 units)
12 in series (2 sets)
FR-BR-H30K
[GRZG type]
The maximum temperature rise of the discharging resistors is about 100°C. Use heat-resistant wires to perform wiring, and make sure that they will
not come in contact with resistors
Do not touch the discharging resistor while the power is ON or for about 10 minutes after the power supply turns OFF. Otherwise you may get an
electric shock.
The number next to the model name indicates the number of connectable units in parallel.
The 400V class 1.5K or lower capacity inverters cannot be used with brake units. When using brake units with inverters, use 2.2K or higher
capacity inverters.
Power
supply
voltage
Motor (kW)
Braking torque
0.4
0.75
1.5
2.2
3.7
5.5
7.5
11
15
200V
class
50% 30s
FR-BU2-1.5K
FR-BU2-3.7K
FR-BU2-7.5K
FR-BU2-15K
100% 30s
FR-BU2-1.5K
FR-
BU2-
3.7K
FR-BU2-7.5K
FR-BU2-15K
2
FR-BU2-15K
400V
class
50% 30s
FR-BU2-H7.5K
FR-BU2-H15K
100% 30s
*2
FR-BU2-H7.5K
FR-BU2-H15K
FR-BU2-H30K
[FR-BR]
The maximum temperature rise of the resistor unit is about 100°C. Therefore, use heat-resistant wires (such as glass wires).
ED at short-time rating when braking torque is 100%
Braking torque (%) at 10%ED in short-time rating of 15s(%)
Motor capacity
5.5kW 7.5kW 11kW
15kW
Mortor capacity
5.5kW 7.5kW
11kW
15kW
200V
class
FR-BU2-15K
%ED
80
40
15
10
200V
class
FR-BU2-15K
Braking
torque (%)
280
200
120
100
FR-BU2-30K
------
------
65
30
FR-BU2-30K
------
------
260
180
400V
class
FR-BU2-H15K
%ED
80
40
15
10
400V
class
FR-BU2-H15K
Braking
torque (%)
280
200
120
100
FR-BU2-H30K
------
------
65
30
FR-BU2-H30K
------
------
260
180
Example 1 Travel operation
Example 2 Lift operation
Time t
tc
tb
Speed
Time t
Descending
Ascending
tc
t1
t2
tb=t1+t2+t3+t4
t3 t4
Speed
Regeneration duty factor (operation frequency)%ED = 100 tb<15s (continuous operation time)
tb
tc
Summary of Contents for F720PJ-11KF
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