Mitsubishi Electric MELSERVO-J2S Series Manual page 20

<Precautions>
Note 1. If the gain of the existing servo amplifier is extremely high, the characteristics may vary slightly after primary replacement. Be
sure to specify a new gain setting.
2. Replacing the motor may change the actual reduction ratio. After verifying the motor's actual reduction ratio, be sure to adjust
the electronic gear. For the motor specifications, refer to Part 6 of the " Guide for Replacing MR-J2S / J2M L (NA) 03092"
issued by Mitsubishi Electric Corporation.
3. When replacing the motor, note that the flange and shaft-end dimensions are not compatible. Therefore, the mounting area
and the parts (coupling, pulley, etc.) which are connected to the servo motor shaft must be changed.
4. When replacing the motor, the new motor will have a different moment of inertia. Therefore use care with regard to the load
inertia moment ratio. Depending on the existing system, it may be necessary to change the operation pattern. For the motor
specifications, refer to Part 6 of the "Guide for Replacing MR-J2S / J2M L (NA) 03092" issued by Mitsubishi Electric
Corporation.
5. Laying a new electromagnetic brake cable is required when performing a secondary replacement or package replacement of
a motor with brake.
6. Replacing an HC-KFS motor with an HG-KR motor will increase the maximum torque, possibly resulting in an excessive
torque. To prevent this, be sure to check the torque command and the limit value, etc., and change them if necessary.
7. Replacing an HA-LFS11K, 15K motor with an HG-JR11K, 15K motor will render the existing thermal cable unnecessary.
Terminal treatment work is therefore required.
8. If the HA-LFS22K1M motor is replaced with the HG-JR22K1M motor, it is necessary to change the crimp terminal of the
existing power supply cable.
(Screw size, UVW terminal: M8 → M10; grounding terminal: M6 → M10; thermistor terminal: M4 → M3.5)
9. If the existing motor is replaced with the HG-JR11K1M motor or JR15K1M motor, the replacement motor will not have a
cooling fan and thermal terminal block. Because the existing wiring will become unnecessary, terminate the cables.
１-９
1 － 9