Fr-Bu2-(H) Brake Unit - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

11.3

FR-BU2-(H) brake unit

• Use a 200 V class brake unit and a resistor unit with a 200 V class servo amplifier, and a 400 V class brake
unit and a resistor unit with a 400 V class servo amplifier. Combination of different voltage class units cannot
be used.
• When a brake unit and a resistor unit are installed horizontally or diagonally, the heat dissipation effect
diminishes. Install them on a flat surface vertically.
• The temperature of the resistor unit case will be higher than the ambient temperature by 100  or over.
Keep cables and flammable materials away from the case.
• Ambient temperature condition of the brake unit is between -10  and 50 . Note that the condition is
different from the ambient temperature condition of the servo amplifier (between 0  and 55 ).
• Configure the circuit to shut down the power-supply with the alarm output of the brake unit and the resistor
unit under abnormal condition.
• Use the brake unit with a combination indicated in the following section. Page 353 Selection
• For executing a continuous regenerative operation, use FR-RC-(H) power regeneration converter or FR-
CV-(H) power regeneration common converter.
• Brake unit and regenerative options (Regenerative resistor) cannot be used simultaneously.
Connect the brake unit to the bus of the servo amplifier. As compared to the MR-RB regenerative option, the brake unit can
return larger power. Use the brake unit when the regenerative option cannot provide sufficient regenerative capability.
When using the brake unit, set [Pr. PA02] to "_ _ 0 1".
When using the brake unit, always refer to the FR-BU2 Instruction Manual.
Selection
Use a combination of servo amplifier, brake unit and resistor unit listed below.
Brake unit
200 V class FR-BU2-15K
FR-BU2-30K
FR-BU2-55K
400 V class FR-BU2-H30K
FR-BU2-H55K
FR-BU2-H75K
*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.
Resistor unit Number of
connected
units
FR-BR-15K 1
2 (parallel)
FR-BR-30K 1
FR-BR-55K 1
MT-BR5-55K 1
FR-BR-H30K 1
FR-BR-H55K 1
MT-BR5-H75K 1
Permissible Resultant
continuous power resistance []
[kW]
0.99 8
1.98 4
1.99 4
3.91 2
5.5 2
1.99 16
3.91 8
7.5 6.5
11 OPTIONS AND PERIPHERAL EQUIPMENT
11.3 FR-BU2-(H) brake unit
11
Applicable servo
*3
amplifier
*1
MR-J4-500GF(-RJ)
MR-J4-500GF(-RJ)
MR-J4-700GF(-RJ)
MR-J4-11KGF(-RJ)
MR-J4-15KGF(-RJ)
MR-J4-500GF(-RJ)
MR-J4-700GF(-RJ)
MR-J4-11KGF(-RJ)
MR-J4-15KGF(-RJ)
MR-J4-11KGF(-RJ)
MR-J4-15KGF(-RJ)
MR-J4-22KGF(-RJ)
MR-J4-22KGF(-RJ)
MR-J4-500GF4(-RJ)
MR-J4-700GF4(-RJ)
*2
MR-J4-11KGF4(-RJ)
MR-J4-11KGF4(-RJ)
MR-J4-15KGF4(-RJ)
MR-J4-22KGF4(-RJ)
MR-J4-22KGF4(-RJ)
353