Adding And Replacing Units And Parts; Mds-E/Eh Series; Replacing The Drive Unit - Mitsubishi Electric C80 series Maintenance Manual

C80 Series Maintenance Manual
3 Maintenance of the Drive Unit

3.3 Adding and Replacing Units and Parts

CAUTION
1. Correctly transport the product according to its weight. Failure to observe this could result in injury.
2. Do not stack the product above the indicated limit.
3. Installation directly on or near combustible materials could result in fires.
4. Install the unit in a place which can withstand its weight.
5. Do not get on or place heavy objects on the unit. Failure to observe this could result in injury.
6. Always use the unit within the designated environment condition range.
7. Do not allow conductive foreign matter such as screws or metal chips, or combustible foreign matter such as oil
enter the servo drive or servo motor.
8. Do not block the intake or exhaust ports of the servo drive of servo motor. Failure to observe this could result in
faults.
9. The servo drive and servo motor are precision devices. Do not drop them or apply strong impacts.
10. Do not install or operate a servo drive or servo motor which is damaged or missing parts.
11. When the unit has been stored for a long time, contact the Service Center or Service Station.
12. Connect the encoder (CN2/CN3) immediately after the installation of the servo drive unit. In addition, when a bat-
tery box is used, immediately connect to the BTA/BTB connector. (prevention of absolute position data lost)

3.3.1 MDS-E/EH Series

3.3.1.1 Replacing the Drive Unit

Arrangement of replacing parts
Contact Mitsubishi branch or your dealer for an order or a replacement of the drive unit.
Place an order for the same type of a drive unit as the one to be replaced.
Replacement procedure
Replace the drive unit with the following procedures.
Procedures
(1) Turn the breaker for the input power OFF. Make sure the CHARGE lamp of the power supply unit is turned OFF.
(2) Disconnect all the connectors and the wires connected to the drive unit.
(3) Remove the two (four) screws fixing the drive unit onto the control panel. Remove the drive unit from the control panel.
(4) Make a same setting for the rotary switch and the dip switch of the new drive unit as those of the uninstalled drive unit.
(5) Install a new drive unit by following the removal procedure in reverse.
Restoration
Data backup and restoration is not required before replacing drive units because drive units' data such as parameters are
stored in the controller. However, carry out a backup of the whole system before replacement as a precautionary measure.
The power for keeping the encoder's position data of an absolute position system is supplied from the battery connected
to the drive unit. Keep the power ON once for 30 minutes or more if possible, and make sure to complete the replacement
within 60 minutes after charging the encoder's capacitor.
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