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14. OPTIONS AND AUXILIARY EQUIPMENT
14. OPTIONS AND AUXILIARY EQUIPMENT
WARNING
Before connecting any option or auxiliary equipment, make sure that the charge
lamp is off more than 15 minutes after power-off, then confirm the voltage with a
tester or the like. Otherwise, you may get an electric shock.
CAUTION
Use the specified auxiliary equipment and options. Unspecified ones may lead to a
fault or fire.
14.1 Options
14.1.1 Regenerative brake options
CAUTION
The specified combinations of regenerative brake options and servo amplifiers
may only be used. Otherwise, a fire may occur.
(1) Combination and regenerative power
Regenerative Power[W]
Servo Amplifier
Built-in regenerative
brake resistor
MR-RB032
[40 ]
MR-RB12
[40 ]
MR-RB32
[40 ]
MR-RB30
[13 ]
(Note)
MR-RB50
[13 ]
MR-J2-10C
Without
30
MR-J2-20C
10
30
100
MR-J2-40C
10
30
100
MR-J2-60C
10
30
100
MR-J2-70C
20
30
100
300
MR-J2-100C
20
30
100
300
MR-J2-200C
100
300
500
MR-J2-350C
100
300
500
Note. Always install a cooling fan.
(2) Selection of the regenerative brake 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 the standard specifications (Section 5.1 in separately
available Servo Motor Instruction Manual). For the servo motor with a load, the permissible duty
changes according to the inertia moment of the load and can be calculated by the following 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.
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