Safety Precautions - Omron Q2V Series Technical Manual

8.1 Safety Precautions

8.1

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, 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. The
drive has internal capacitors that stay charged after you de-energize the drive.
Disconnect all power to the drive and wait for the time specified on the warning label before you
remove covers. Check the drive for dangerous voltages before servicing or repair work.
If you do work on the drive when it is energized and there is no cover over the electronic circuits, it will cause
serious injury or death from electrical shock. The drive has internal capacitors that stay charged after you de-
energize the drive.
The motor will run after you de-energize the drive. PM motors can generate induced voltage to
the terminal of the motor after you de-energize the drive.
If you touch a motor that is moving or energized, it can cause serious injury or death.
Do not operate the drive when covers are missing. Replace covers and shields before you
operate the drive. Use the drive only as specified by the instructions.
Some figures in this section include drives without covers or safety shields to more clearly show the inside of the
drive. If covers or safety shields are missing from the drive, it can cause serous injury or death.
Always ground the motor-side grounding terminal.
If you do not ground the equipment correctly, it can cause serious injury or death if you touch the motor case.
Only let approved personnel install, wire, maintain, examine, replace parts, and repair the drive.
If personnel are not approved, it can cause serious injury or death.
Do not wear loose clothing or jewelry when you do work on the drive. Tighten loose clothing
and remove all metal objects, for example watches or rings.
Loose clothing can catch on the drive and jewelry can conduct electricity and cause serious injury or death.
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.
Do not use the main circuit power supply (Overvoltage Category III) at incorrect voltages.
Operate the drive in the specification range of the input voltage on the drive nameplate.
Voltages that are higher than the permitted nameplate tolerance can cause damage to the drive.
Do not put flammable or combustible materials on top of the drive and do not install the drive
near flammable or combustible materials. Attach the drive to metal or other noncombustible
material.
Flammable and combustible materials can start a fire and cause serious injury or death.
268
DANGER
Electrical Shock Hazard
WARNING
Electrical Shock Hazard
Fire Hazard
SIEPCYEUOQ2V01A Q2V Technical Manual