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APPENDIX
App. - 47
App. 11 Special specification
App. 11.1 Amplifiers without dynamic brake
App. 11.1.1 Summary
This section explains servo amplifiers without a dynamic brake. The things not explained in this section will
be the same as MR-J4-_B_(-RJ).
App. 11.1.2 Model
The following describes what each block of a model name indicates. Not all combinations of the symbols are
available.
Series
Rated output
Symbol Rated output [kW]
10 0.1
20 0.2
40 0.4
60 0.6
70 0.75
100 1
200
2
350 3.5
500 5
700 7
Power supply
Symbol Power supply
None
3-phase 200 V AC to 240 V AC
4 3-phase 380 V AC to 480 V AC
Special specifications
Symbol Special specifications
RU MR-J4-_B_-RJ without a dynamic brake
1 1-phase 100 V AC to 120 V AC
ED MR-J4_-B_ without a dynamic brake
App. 11.1.3 Specifications
Dynamic brake which is built in 7 kW or smaller servo amplifiers is removed.
Take safety measures such as making another circuit for an emergency stop, alarm occurrence, and power
shut-off.
The following servo motors may function an electronic dynamic brake at an alarm occurrence.
Series Servo motor
HG-KR HG-KR053/HG-KR13/HG-KR23/HG-KR43
HG-MR HG-MR053/HG-MR13/HG-MR23/HG-MR43
HG-SR HG-SR51/HG-SR52
Setting the following parameter disables the electronic dynamic brake.
Servo amplifier Parameter Setting value
MR-J4-_B_-ED
MR-J4-_B_-RU
[Pr. PF06] _ _ _ 2
When [Pr. PA04] is "2 _ _ _" (default), the motor can be a state of forced stop deceleration at an alarm
occurrence. Setting "0 _ _ _" in [Pr. PA04] disables the forced stop deceleration function.