Replacing A Motor Driver Module - Epson RC520 Manual

5.4.2 Replacing a Motor Driver Module

Replace a Motor Driver module by following the steps described below.
■ Make sure that the power rating (wattage) of a new Motor Driver module is
correct. Using a Motor Driver module with improper power rating (wattage) in
the Drive Unit may not only cause improper function of the robot system but
also damage to the system.
CAUTION
(1) Shut down Windows, and turn OFF the Control Unit and four-axis Drive Unit.
(2) Disconnect all the cables from the back of the four-axis Drive Unit.
(3) Wait for about 1 minute until the high voltage is completely discharge.
(4) Check to make sure that LED # 9 (orange) on the DPB is OFF. Wait until the LED
(5)
RC520 Rev.7
Remove the Top Cover by removing the eight screws as shown in the figure below.
is OFF because the capacitors are not completely discharged if LED # 9 is ON.
Remove the two screws from the Motor Driver module as shown below.
Maintenance 5. Four-axis Drive Unit
M3 crown washer screws
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