13 - 1
13. OPTIONS AND AUXILIARY EQUIPMENT
13. OPTIONS AND AUXILIARY EQUIPMENT
WARNING Before connecting any option or auxiliar y equipment, make sure tha t the charge
lamp is off more than 10 minutes after power-off, then confirm the voltage with a
tester or the like. Otherwise, you ma y get an electric shock.
CAUTION Use the specified auxiliary equipment and o pt io ns . Uns pecified ones may lead to a
fault or fire.
13.1 Options
13.1.1 Regenerative brake options
CAUTION The specified combinations of rege nerative brake options and servo ampl ifiers
may only be used. Otherwise, a fire m ay occur.
(1) Combination and regenerative po wer
(Note) Regenerative power[W]
Servo amplifier Built-in regenerative
brake resistor
MR-RB032
[40 ]
MR-RB12
[40 ]
MR-RB32
[40 ]
MR-RB30
[13 ]
MR-RB50
[13 ]
MR-J2S-10A(1) 30
MR-J2S-20A(1) 10 30 100
MR-J2S-40A(1) 10 30 100
MR-J2S-60A 10 30 100
MR-J2S-70A 20 30 100 300
MR-J2S-100A 20 30 100 300
MR-J2S-200A 100 300 500
MR-J2S-350A 100 300 500
Note: This value is the regenerative power of the resistor and is not the rated power.
(2) Selection of the regenerative br ake option
(a) Simple selection method
In horizontal motion applications, select the regenerative brake option as described below:
When the servo motor is run without load in the regenerative mode from the running speed to a
stop, the permissible duty is as indicated in Section 5.1 of the separately available Servo Motor
Instruction Manual.
For the servo motor with a load, the permi ssible du ty change s accord ing to the inertia moment of
the load and can be calculated by the fol lowing formula:
Permissible
duty Permissible duty for servo motor with no load (value indication Section 5. 1 in Servo Motor Instruction Manual)
(m 1)
ratedspeed
running speed [times/min]
2
where m load inertia moment/servo motor inertia moment
From the permissible duty, find whether the regenerative brake option is required or not.
Permissible duty number of positioning times [times/min]
Select the regenerative brake option out of the combinations in (1) in this section.