Periodic Inspection and
Maintenance
8
8.1 Safety Precautions
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 305
NOTICE
Observe correct electrostatic discharge (ESD) procedures when touching the drive.
Failure to obey can cause ESD damage to the drive circuitry.
Follow cooling fan replacement instructions. Replace all fans when performing maintenance to
help ensure maximum useful product life.
Improper fan replacement could cause damage the drive.
Do not use unshielded wire for control wiring. Use shielded twisted-pair wires and ground the
shield to the ground terminal of the drive.
Failure to comply may cause electrical interference resulting in poor system performance.
Do not change the drive circuitry.
Failure to obey can cause damage to the drive and will void warranty. The manufacturer cannot be made
responsible for modifications of the product made by the user.
Make sure that all connections are correct after you install the drive and connecting peripheral
devices.
Failure to obey can cause damage to the drive.
Comply with proper wiring practices. Connect motor input terminals U, V and W to drive output
terminals U/T1, V/T2, and W/T3. The phase order for the drive and motor should match.
The motor may run in reverse if the phase order is backward.
Turn the drive ON (Run) and OFF (Stop) a maximum of one time each 30 minutes with the MC on
the power source side to extend the service life of the relay contacts and electrolytic capacitors
in the drive. Run and Stop the motor as much as possible with the drive.
The drive can fail if users frequently turn the drive ON and OFF with the MC on the power source side to Run
and Stop the drive. Incorrect operation can decrease the service life of the relay contacts and electrolytic
capacitors.
Do not connect or operate damaged equipment or equipment with missing parts.
Failure to obey can cause damage to the drive and connected equipment.
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