Brake Unit - Mitsubishi Electric Melservo MR-J3-A Instruction Manual

12. OPTIONS AND AUXILIARY EQUIPMENT

12.3 Brake unit

The brake unit is the integration of the regenerative control and resistor and is connected to the bus (across
P-N) of the servo amplifier. As compared to the MR-RB regenerative option, the brake unit can return larger
power. Hence, use this brake unit when the MR-RB cannot provide sufficient regenerative capability.
When using the brake unit, set "
(1) Selection
Brake unit
FR-BU-15K
FR-BU-30K
FR-BU-55K
FR-BU-H15K
FR-BU-H30K
FR-BU-H55K
POINT
The brake unit and resistor unit of other than 200V class are not applicable to
the servo amplifier.
The brake unit and resistor unit of other than 400V class are not applicable to
the servo amplifier.
The brake unit and resistor unit of the same capacity must be combined.
The units of different capacities may result in damage.
The brake unit and resistor unit must be installed on a vertical surface in the
vertical direction. If they are installed in the horizontal direction or on a horizontal
surface, a heat dissipation effect reduces.
The temperature of the resistor unit casing rises to higher than 100 . Do not
cause cables and combustibles to make contact with the casing.
01" in parameter No.PA02.
Permissible continuous
Resistor unit
power [kW]
FR-BR-15K
FR-BR-30K
FR-BR-55K
FR-BR-H15K
FR-BR-H30K
FR-BR-H55K
Max. instantaneous power
0.99
1.99
3.91
0.99
1.99
3.91
12 - 33
Applicable servo amplifier
[kW]
MR-J3-500A
16.5
MR-J3-700A
MR-J3-11KA
33.4
MR-J3-15KA
66.8
MR-J3-22KA
16.5
MR-J3-11KA4
33.4 MR-J3-15KA4
MR-J3-22KA4
66.8