Mitsubishi Electric Melservo MR-J3-A Instruction Manual page 301

12. OPTIONS AND AUXILIARY EQUIPMENT
(c) MR-J3-11KA(4) to MR-J3-22KA(4) (when using the supplied regenerative resistor)
When using the regenerative resistors supplied to the servo amplifier, the specified number
of resistors (4 or 5 resistors) must be connected in series. If they are connected in parallel or in less
than the specified number, the servo amplifier may become faulty and/or the regenerative resistors
burn. Install the resistors at intervals of about 70mm. Cooling the resistors with fans
3
(1.0m /min, 92 ( about two fans) improves the regeneration capability. In this case, set "
in parameter No. PA02.
5m or less
Do not remove
the short bar.
(Note) Series connection
Cooling fan
Note. The number of resistors connected in series depends on the resistor type. The thermal sensor is not mounted on the
attached regenerative resistor. An abnormal heating of resistor may be generated at a regenerative circuit failure. Install a
thermal sensor near the resistor and establish a protective circuit to shut off the main circuit power supply when abnormal
heating occurs. The detection level of the thermal sensor varies according to the settings of the resistor. Set the thermal
sensor in the most appropriate position on your design basis or use the thermal sensor built-in regenerative option (MR-
RB5E, 9P, 9F, 6B-4, 60-4 and 6K-4) provided by Mitsubishi Electric Corporation.
Servo Amplifier
MR-J3-11KA
MR-J3-15KA
MR-J3-22KA
MR-J3-11KA4
MR-J3-15KA4
MR-J3-22KA4
Servo amplifier
P
1
P
C
Regenerative Regenerative Power [W]
Resistor
Normal
GRZG400-1.5 500
GRZG400-0.9 850
GRZG400-0.6 850
GRZG400-5.0 500
GRZG400-2.5 850
GRZG400-2.0 850
Resistance
[ ]
Cooling
800 6
1300 4.5
1300 3
800 20
1300 12.5
1300 10
12 - 28
Number of
Resistors
4
5
5
4
5
5
FA"