Specifications

6– 2
6. OPTIONS AND AUXILIARY EQUIPMENT
Before connecting any option or auxiliary equipment, make sure that the
charge lamp is off more than 10 minutes after power-off, then confirm the
voltage with a tester or the like. Otherwise, you may get an electric shock.
The specified combinations of regenerative brake options and servo am-
plifiers may only be used. Otherwise, a fire may occur.
Use the specified auxiliary equipment and options. Unspecified ones may
lead to a fault or fire.
(1) Combination and regenerative power
6-1 Dedicated options
6-1-1 Regenerative brake options
WARNING
CAUTION
CAUTION
Servo Amplifier
Model
Note: These values indicate the regenerative powers caused by the resister, not the rated powers.
Built-in regenera-
tive brake resistor
Without
10
10
10
20
20
100
100
MR–RB032
[40Ω]
30
30
30
30
30
30
MR–RB12
[40Ω]
100
100
100
100
100
MR–RB32
[40Ω]
300
300
MR–RB30
[13Ω]
300
300
MR–RB50
[13Ω]
500
500
(Note) Regenerative Power[W]
MR–J2–10A(1)
MR–J2–20A(1)
MR–J2–40A(1)
MR–J2–60A
MR–J2–70A
MR–J2–100A
MR–J2–200A
MR–J2–350A
Permissible duty= x [times/minute]
permissible duty for servo motor with no load (value indicated in Section 10-1)
(m+1)
where m = load inertia moment/servo motor inertia moment
rated speed
running speed
(
)
2
(2) Selection of the regenerative brake option
1) 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 10-1).
For the servo motor with a load, the permissible duty changes according to the inertia mo-
ment of the load and can be calculated by the following formula:
From the permissible duty, find whether the regenerative brake option is required or not.
Permissible duty < number of positioning times n1 [times/minute]
Select the regenerative brake option out of the combinations in (1) in this section.