3.1 Section Safety
3.1
Section Safety
A
d a n g e r
Electrical Shock Hazard
Do not change wiring, remove covers, connectors or options cards, or attempt to service the drive with power
applied to the drive.
Disconnect all power to the drive, and lock out the power source. After shutting off the power wait for at least the
amount o f time specified on the drive front cover safety label. Measure the DC bus voltage for unsafe voltages to
confirm safe level before servicing to prevent electric shock The internal capacitor remains charged even after the
power supply is turned off. Failure to comply will result in serious injury or death from electric shock.
A WARNING
Sudden Movement Hazard
Operating a drive with untested emergency circuits could result in death or serious injury.
Verify all emergency stop wiring and circuits before operating the drive.
Ensure start/stop, I/O and safety circuits are wired properly and in the correct state before energizing or
running the drive.
Failure to comply could result in death or serious injury from moving equipment.
Ensure holding brake circuits are properly configured, load equipment may fall or drop during power loss or
drive fault, which could result in death or serious injury.
• Provide a separate holding brake if necessary.
• Always construct the external sequence to confirm that the holding brake is activated in the event o f an emergency, a
power failure, or an abnormality in the drive.
• If using the drive with an elevator, provide safety measures on the elevator to prevent the elevator from dropping.
Electrical Shock Hazard
Do not operate equipment with covers removed.
Failure to comply could result in death or serious injury.
The diagrams in this section may show drives without covers or safety shields to show 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 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 allow unqualified personnel to use the equipment.
Failure to comply could result in death or serious injury.
Maintenance, inspection, and replacement of parts must be performed only by authorized personnel familiar with
installation, adjustment and maintenance o f AC drives.
Make sure the protective earthing conductor complies with technical standards and local safety regulations.
When an EMC filter is installed, the leakage current exceeds 3.5 mA. Therefore according to IEC61800-5, an
automatic power supply interruption in case o f a broken earthing conductor must be provided. Alternatively a
protective earthing conductor with a cross section o f at least 10 mm2 (Cu) or 16 mm2 (Al) must be used.
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YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
