ABB ACQ80-04 Series, Hardware Manual

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Electrical safety in installation, start-up and maintenance
￭ Electrical safety precautions
These electrical safety precautions are for all personnel who do work on the drive, motor
cable or motor.
WARNING!
Obey these instructions. If you ignore them, injury or death, or damage to the
equipment can occur. If you are not a qualified electrician, do not do installation
or maintenance work. Go through these steps before you begin any installation or
maintenance work.
1. Clearly identify the work location and equipment.
2. Disconnect all possible voltage sources. Lock and tag.
• Open the main disconnecting device of the drive.
• If you have a permanent magnet motor connected to the drive, disconnect the motor
from the drive with a safety switch or by other means.
• Make sure that re-connection is not possible.
• Disconnect any external power sources from the control circuits.
• After you disconnect the drive, always wait 5 minutes to let the intermediate circuit
capacitors discharge before you continue.
3. Protect any other energized parts in the work location against contact.
4. Take special precautions when close to bare conductors.
5. Measure that the installation is de-energized.
• Use a multimeter with an impedance of at least 1 Mohm.
• Make sure that the voltage between the drive input power terminals and the
grounding (PE) busbar is close to 0 V.
• If you have a permanent magnet motor connected to the drive, make sure that the
voltage between the drive output terminals and the grounding (PE) busbar is close
to 0 V.
6. Ask the person in control of the electrical installation work for a permit to work.
￭ Additional instructions and notes
WARNING!
Obey these instructions. If you ignore them, injury or death, or damage to the
equipment can occur.
• If you are not a qualified electrician, do not do electrical installation or maintenance
work.
• Do not install the drive if the electrical power network, motor/generator, or environmental
conditions do not agree with the drive data.
• Do not do insulation or voltage withstand tests on the drive.
Note:
• The motor cable terminals of the drive are at a dangerous voltage when the input power
is on, regardless of whether the motor is running or not.
• When the input power is on, the drive DC bus is at a dangerous voltage.
14 Safety instructions
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