Only a qualified electrician who has appropriate knowledge on functional, machine, and
process safety is allowed to install, start up and maintain the safety circuit. All user-made
changes are on the user's responsibility.
WARNING!
Always test the operation of the safety circuit according to its
acceptance test procedure at the start-up and after any changes to the safety
circuit.
WARNING!
Obey the safety instructions of the drive. 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.
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 out and tag out.
•
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. Lock out and tag out.
•
Disconnect any dangerous external voltages from the control circuits.
•
After you disconnect power from 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 greater than 1 Mohm.
•
Make sure that the voltage between the drive input power terminals (L1, L2, L3)
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 (T1/U, T2/V, T3/W) 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.
8 Safety instructions
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