Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual page 386

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.
(3) Connection example
(a) Combination with FR-BR-(H) resistor unit
Parameter
No. Name
0 Brake mode switchover
1 Monitor display data selection
2 Input terminal function selection 1
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
POINT
Connecting PR terminal of the brake unit to L
results in a brake unit malfunction. Always connect the PR terminal of the
brake unit to the PR terminal of the 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.
Converter unit
L
L
Connecting two cables to
P and N terminals
Change
possible/
impossible
Impossible
Possible
Impossible
Brake unit
P/
N/
Brake unit
P/
N/
13 - 89
Remarks
Do not change the parameter.
Refer to FR-BU2-(H) Brake Unit
Instruction Manual.
Do not change the parameter
terminal of the converter unit
Converter unit
L
L
Passing wiring
Brake unit
P/
N/
Brake unit
P/
N/