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11. OPTIONS AND PERIPHERAL EQUIPMENT
11 - 25
Brake unit Resistor unit
Number of
connected
units
Permissible
continuous
power [kW]
Resultant
resistance [Ω]
Applicable servo
amplifier (Note 3)
400 V
class
FR-BU2-H30K FR-BR-H30K 1 1.99 16 MR-J4-500B4(-RJ)
MR-J4-700B4(-RJ)
MR-J4-11KB4(-RJ)
(Note 2)
FR-BU2-H55K FR-BR-H55K 1 3.91 8 MR-J4-11KB4(-RJ)
MR-J4-15KB4(-RJ)
MR-J4-22KB4(-RJ)
FR-BU2-H75K MT-BR5-H75K 1 7.5 6.5 MR-J4-22KB4(-RJ)
Note 1. Only when using servo motor HG-RR353/HG-UR352
2. When HG-JR11K1M4 servo motor is used, limit the torque during power running to 180% or less, or the servo
motor speed to 1800 r/min or less.
3. When the brake unit is selected by using the capacity selection software, a brake unit other than the combinations
listed may be shown. Refer to the combinations displayed on the capacity selection software for detailed
combinations.
11.3.2 Brake unit parameter setting
Whether a parameter can be changed or not is listed below.
Parameter Change
possible/
impossible
Remarks
No. Name
0 Brake mode switchover Impossible Do not change the parameter.
1 Monitor display data selection Possible Refer to the FR-BU2 Instruction Manual.
2 Input terminal function selection 1 Impossible Do not change the parameter.
3 Input terminal function selection 2
77 Parameter write selection
78 Cumulative energization time
carrying-over times
CLr Parameter clear
ECL Alarm history clear
C1 For manufacturer setting