Safety Precautions - Omron Q2A Series Technical Manual

2.1 Safety Precautions

2.1

Safety Precautions

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.
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.
Ground the neutral point on the power supply of drive models 2xxxB/C and 4xxxA/B/C to
comply with the EMC Directive before turning on the EMC filter or if there is high resistance
grounding.
If the EMC filter is switched ON without the neutral point being grounded or if there is high resistance
grounding, it can cause death or serious injury.
The leakage current of the drive will be more than 3.5 mA in drive models 2xxxB, 2xxxC, 4002B
to 4371B, 4002C to 4371C (with built-in EMC filter turned ON) and 4389 to 4675. The IEC/EN
61800-5-1: 2007 standard specifies that users must wire the power supply to automatically turn
off when the protective ground wire disconnects. Users can also connect a protective ground
wire that has a minimum cross-sectional area of 10 mm
wire).
Failure to obey these standards can cause death or serious injury.
Always use a type B Residual Current Monitor/Residual Current Device (RCM/RCD) where a
residual current operated protective or monitoring device protects against direct or indirect
contact as specified by IEC/EN 60755 The drive can cause a residual current with a DC
component in the protective earthing conductor.
Failure to obey can cause death or serious injury.
Do not work on the drive or around the drive while wearing loose clothing or jewelry. Tighten
loose clothing and remove all metal objects such as watches or rings.
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.
Only let authorized persons install, wire, maintain, examine, replace parts, and repair the drive.
Failure to obey can cause death or serious injury.
Do not make changes to the drive body or drive circuitry.
Failure to obey can cause death or serious injury and will void warranty. The manufacturer is not responsible for
changes to the product made by the user.
Tighten all terminal screws to the correct tightening torque.
Connections that are too loose or too tight can cause incorrect operation and damage to the drive. Incorrect
connections can also cause death or serious injury from fire.
Tighten screws against the bit at an angle in the specified range shown in this manual.
If you tighten the screws at an angle not in the specified range, you can have loose connections that can cause
damage to the terminal block or start a fire.
28
DANGER
Electrical Shock Hazard
WARNING
Electrical Shock Hazard
Fire Hazard
2 (copper wire) or 16 mm
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
2 (aluminum