Periodic Inspection and Maintenance
8
8.5 Replace the Drive
YASKAWA SIEPYEULA5001C LA500 Technical Manual 215
8.5 Replace the Drive
◆ About the Control Circuit Board
You can remove the control circuit board of the drive and install a new board. If there is a failure in the drive, you
can use this feature to easily replace the control circuit board.
A - Control circuit board
Figure 8.16 Control Circuit Terminal Block
◆ Safety Precautions
DANGER! Electrical Shock Hazard. Disconnect all power to the drive and wait for the time specified on the warning label before
you remove covers. Check the drive for dangerous voltages before servicing or repair work. If you do work on the drive when it
is energized and there is no cover over the electronic circuits, it will cause serious injury or death from electrical shock. The
drive has internal capacitors that stay charged after you de-energize the drive.
DANGER! Electrical Shock Hazard. Do not examine, connect, or disconnect wiring on an energized drive. Before servicing,
disconnect all power to the equipment and wait for the time specified on the warning label at a minimum. The internal capacitor
stays charged after the drive is de-energized. The charge indicator LED extinguishes when the DC bus voltage decreases
below 50 Vdc. When all indicators are OFF, measure for dangerous voltages to make sure that the drive is safe. If you do work
on the drive when it is energized, it will cause serious injury or death from electrical shock.
WARNING! Electrical Shock Hazard. Only let approved personnel install, wire, maintain, examine, replace parts, and repair the
drive. If personnel are not approved, it can cause serious injury or death.
NOTICE: Damage to Equipment. When you touch the drive and circuit boards, make sure that you observe correct electrostatic
discharge (ESD) procedures. If you do not follow procedures, it can cause ESD damage to the drive circuitry.
Before you wire the main circuit terminal block, also refer to Wire to the Main Circuit Terminal Block on page 52.
◆ Remove the Control Circuit Board
Remove the front cover and keypad from the drive.
1. Push the tabs to the left that hold the control board to the drive.
Figure 8.17 Unhook the Tabs
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