4.1 Safety Precautions
122 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
4.1 Safety Precautions
DANGER
Electrical Shock Hazard
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
Do not operate equipment when covers are missing. Some figures in this section include drives
without covers or safety shields to more clearly show the inside of the drive. Replace covers
and shields before operation. Use drives only as specified by the instructions.
Failure to obey can cause death or serious injury.
Do not remove covers or touch circuit boards while the drive is energized.
Failure to obey can cause death or serious injury.
Prepare an isolated holding brake. The holding brake wiring must activate an external sequence
to de-energize the drive or trigger an emergency switch when the drive detects a fault.
Failure to obey could cause death or serious injury.
Crush Hazard
In hoist applications, use the applicable safety precautions to prevent the load from falling.
Failure to obey can cause death or serious injury from falling loads.
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