• Make sure that the electrical power network, motor/generator, and environmental
conditions agree with the drive data.
• Do not do insulation or voltage withstand tests on the drive.
• If you have a cardiac pacemaker or other electronic medical device, keep away from
the area near motor, drive, and the drive power cabling when the drive is in operation.
There are electromagnetic fields present which can interfere with the function of
such devices. This can cause a health hazard.
Note:
• When the drive is connected to the input power, the motor cable terminals and the
DC bus are at a dangerous voltage.
After disconnecting the drive from the input power, these remain at a dangerous
voltage until the intermediate circuit capacitors have discharged.
• External wiring can supply dangerous voltages to the relay outputs of the control
units of the drive.
• The Safe torque off function does not remove the voltage from the main and auxiliary
circuits. The function is not effective against deliberate sabotage or misuse.
Printed circuit boards
WARNING!
Use a grounding wristband when you handle printed circuit boards. Do not touch
the boards unnecessarily. The boards contain components sensitive to electrostatic
discharge.
■
Grounding
These instructions are for all personnel who are responsible for the grounding of the
drive.
WARNING!
Obey these instructions. If you ignore them, injury or death, or equipment
malfunction can occur, and electromagnetic interference can increase.
If you are not a qualified electrical professional, do not do grounding work.
• Always ground the drive, the motor and adjoining equipment. This is necessary for
the personnel safety. Proper grounding also reduces electromagnetic emission and
interference.
• Make sure that the conductivity of the protective earth (PE) conductors is sufficient.
See the electrical planning instructions of the drive. Obey the local regulations.
• Connect the power cable shields to protective earth (PE) terminals of the drive to
make sure of personnel safety.
Safety instructions 17
Содержание ACS880-11
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