14 - 23
14. OPTIONS AND AUXILIARY EQUIPMENT
(c) MR-J3-11KT to MR-J3-22KT (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 (1.0m 3 /min, 92
(about two fans) improves the regeneration capability. In this case, set " FA" in parameter No. PA02.
P
C
Servo amplifier
(Note) Series connection
Fan
P
1
Do not remove
the short bar.
5m or less
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) provided by Mitsubishi
Electric Corporation.
Regenerative Power [W]
Servo Amplifier
Regenerative
Resistor
Normal Cooling
Resistance
[ ]
Number of
Resistors
MR-J3-11KT GRZG400-1.5 500
800
6
4
MR-J3-15KT GRZG400-0.9 850
1300
4.5
5
MR-J3-22KT GRZG400-0.6 850
1300
3
5
Содержание MELSERVO MR-J3-xT
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