8.5 Replace the Drive
336 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
8.5 Replace the Drive
WARNING! Electrical Shock Hazard. While the drive is ON, never attempt to change any wiring, disconnect any option cards or
connectors, or replace the cooling fan. Before performing any repairs, shut OFF the power supply to the drive and verify that
there is no residual voltage in the unit. Failure to do so may result in serious electric shock.
WARNING! Electrical Shock Hazard. Only let authorized persons install, wire, maintain, examine, replace parts, and repair the
drive. Failure to obey can cause death or serious injury.
WARNING! 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, remove the covers before measuring for dangerous voltages to make sure that the
drive is safe. Failure to obey will cause death or serious injury.
NOTICE: Observe correct electrostatic discharge (ESD) procedures when touching the drive and circuit boards. Failure to obey
can cause ESD damage to the drive circuitry.
◆ About the Control Circuit Terminal Block
You can remove the control circuit terminal block of the drive and install a new terminal block. If there is a failure
in the drive, you can use this feature to easily replace the control circuit terminal block.
A - Control circuit terminal block B - Control circuit terminal block
fastening screw
Figure 8.61 Control Circuit Terminal Block
◆ Notes on Wiring the Main Circuit Terminal Block
Read these notes before you wire the main circuit terminal block.
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