Section Safety - YASKAWA Z1000U Technical Manual

6.1 Section Safety

6.1 Section Safety
Before servicing, disconnect all power to the equipment. The internal capacitor remains charged even after the power
supply is turned off. The charge indicator LED will extinguish when the DC bus voltage is below 50 Vdc. To prevent electric
shock, wait for at least the time specified on the warning label, once all indicators are OFF, measure for unsafe voltages to
confirm the drive is safe prior to servicing.
Failure to comply will result in death or serious injury.
It is possible that there is more than one source of power for equipment.
Obey the requirements for Electrical Safety in the Workplace and local codes for safe work procedures and applicable personal
protective equipment (PPE). Failure to obey can cause serious injury or death.
Do not operate equipment with covers removed.
Failure to comply could result in death or serious injury.
The diagrams in this section may illustrate drives without covers or safety shields to display details. Be sure to reinstall covers
or shields before operating the drives and run the drives according to the instructions described in this manual.
Always ground the motor-side grounding terminal.
Improper equipment grounding could result in death or serious injury by contacting the motor case.
Do not touch terminals before the capacitors have fully discharged.
Failure to comply could result in death or serious injury.
Before servicing, disconnect all power to the equipment. The internal capacitor remains charged even after the power supply
is turned off. The charge indicator LED will extinguish when the DC bus voltage is below 50 Vdc. To prevent electric shock,
wait for at least the time specified on the warning label; after all indicators are OFF, measure for unsafe voltages to confirm
the drive is safe prior to servicing.
After blowing a fuse or tripping a GFCI, do not attempt to restart the drive or operate peripheral devices until five
minutes pass and CHARGE lamp is OFF.
Failure to comply could result in death, serious injury, and damage to the drive.
Check wiring and peripheral device ratings to identify the cause of trips.
Contact your supplier if the cause cannot be identified.
Do not allow unqualified personnel to perform work on the drive.
Failure to comply could result in death or serious injury.
Installation, maintenance, inspection and servicing must be performed only by authorized personnel familiar with installation,
adjustment and maintenance of AC drives.
Do not perform work on the drive while wearing loose clothing, jewelry, or without eye protection.
Failure to comply could result in death or serious injury.
Remove all metal objects such as watches and rings, secure loose clothing and wear eye protection before beginning work
on the drive.
Do not remove covers or touch circuit boards while the power is on.
Failure to comply could result in death or serious injury.
198
DANGER
Electrical Shock Hazard
WARNING
Arc Flash Hazard
Electrical Shock Hazard
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual