7 Periodic Inspection and Maintenance
388
YASKAWA ELECTRIC
SIEP C710617 19A YASKAWA AC Drive CR700 Technical Manual
5.
Energize the drive and set
o4-03 = 0 [Fan Operation Time Setting = 0 h]
to reset the cooling fan operation
time.
◆
Replace the Drive
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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 7.61 Control Circuit Terminal Block
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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.