Brake Unit Parameter Setting; Connection Example - Mitsubishi Electric MELSERVO-J4 Series Transition Handbook

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_

7.4.2 Brake unit parameter setting

Normally, changing the FR-BU2-(H) parameter is not required. Whether a parameter can be changed or not
is listed below.

7.4.3 Connection example

(1) 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
Cumulative energization time
78
carrying-over times
CLr Parameter clear
ECL Alarm history clear
C1 For manufacturer setting
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.
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 terminals for master/slave (MSG to MSG, SD to SD)
between the two brake units.
Do not connect as follows.
Converter unit
L+
L-
Connecting two cables
to L+ and L- terminals
Change
possible/
impossible
Impossible Do not change the parameter.
Possible Refer to "FR-BU2 Brake Unit Instruction
Manual".
Impossible Do not change the parameter.
Brake unit
P/+
N/-
Brake unit
P/+
N/-
5 - 58
Remark
Converter unit Brake unit
L+ P/+
L- N/-
Brake unit
P/+
N/-
Passing wiring