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13 - 90 13. SERVO AMPLIFIERS WI TH A LARGE CAPACITY ( 30k TO 55kW ) 13.9.10 FR-BU2-(H) Brake Unit POINT Use a 200V class brake unit and a resist or unit with a 200V class converter unit, and a 400V class brake unit and a…

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13 - 89
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(3) Outline drawing
HF3200A-UN
[Unit: mm]
500 5
480 1
3- 6.5 3-M10
M8
3- 6.5 Length: 8
TF3150C-TX
[Unit: mm]
150 1 150 1 150 1
452 5
500 3
3-M8
3-M8
M4
M8
M4
M4
8-R 4.25 Length: 12
(for M8)
110 2
210 2
(227)
260 3
13 - 90
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
13.9.10 FR-BU2-(H) Brake Unit
POINT
Use a 200V class brake unit and a resistor unit with a 200V class converter
unit, and a 400V class brake unit and a resistor unit with a 400V class
converter unit. Combination of different voltage class units cannot be used.
Install a brake unit and a resistor unit on a flat surface vertically. When the
unit is installed horizontally or diagonally, the heat dissipation effect
diminishes.
Temperature of the resistor unit case rises to higher than 100 . Keep cables
and flammable materials away from the case.
Ambient temperature condition of the brake unit is between 10 to 50 .
Note that the condition is different from the ambient temperature condition of
the converter unit (between 0
to 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 (1) of this section.
For executing a continuous regenerative operation, use FR-RC-(H) power
regeneration converter or FR-CV-(H) power regeneration common converter.
When using the brake unit, set the parameters as shown below.
Setting value
Parameter No.PA01 of the MR-J3-CR55K(4) converter unit 00 (Initial value)
Parameter No.PA02 of the drive unit 00 (Initial value)
Connect the brake unit to the bus of the converter unit (L
and L of TE2-1) for use. As compared to the MR-
RB regenerative brake option, the brake unit can return larger power. Use the brake unit when the regenerative
brake option cannot provide sufficient regenerative brake capability.
When using the brake unit, always refer to the FR-BU2-(H) Brake Unit Instruction Manual.
(1) Selection
Use a combination of converter unit, brake unit and resistor unit listed below.
Brake unit Resistor unit
Number of
connected
units
Permissible
continuous
power [kW]
Total
resistance
[
]
Applicable converter
unit
200V
class
FR-BU2-55K FR-BR-55K 2 (parallel) 7.82 1 MR-J3-CR55K
MT-BR5-55K 2 (parallel) 11.0 1 MR-J3-CR55K
400V
class
FR-BU2-H55K FR-BR-H55K 2 (parallel) 7.82 4 MR-J3-CR55K4
FR-BU2-H75K MT-BR5-H75K 2 (parallel) 15.0 3.25 MR-J3-CR55K4
13 - 91
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(2) Brake unit parameter setting
Normally, changing parameters of the FR-BU2-(H) is not necessary. 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 FR-BU2-(H) Brake Unit
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
(3) Connection example
POINT
Connecting PR terminal of the brake unit to L terminal of the converter unit
results in a brake unit malfunction. Always connect the PR terminal of the
brake unit to the PR terminal of the resistor unit.
(a) Combination with FR-BR-(H) resistor unit
POINT
To use brake units with a parallel connection, use two sets of FR-BU2-(H)
brake unit. Combination with other brake unit results in alarm occurrence or
malfunction.
Always connect the master and slave terminals (MSG and SD) of the two
brake units.
Do not connect as shown below.
N/
P/
Brake unit
Brake unit
Converter unit
L
L
N/
P/
Connecting two cables to
P and N terminals
N/
P/
Brake unit
Brake unit
Converter unit
L
L
N/
P/
Passing wiring