Are shielded twisted pair (STP) cables used for
control terminal wiring?
Is the shielding of the STP wiring properly
grounded?
If 3-wire operation is required, are the multi-
function input terminals defined prior to the
installation of the control wiring connections?
Are the control cables properly wired?
Are the control terminal screws tightened to their
specified torques?
Is the total cable length of all control wiring less
than 165 ft (50 m)?
Is the total length of safety wiring less than 100 ft
(30 m)?
Are optional cards connected correctly?
Is there any debris left inside the inverter?
Are any cables contacting adjacent terminals,
creating a potential short circuit risk?
Are the control terminal connections separated
from the power terminal connections?
Have the capacitors been replaced if they have
been in use for more than 2 years?
Have the fans been replaced if they have been in
use for more than 3 years?
Has a fuse been installed for the power source?
Are the connections to the motor separated from
other connections?
Shielded twisted pair (STP) cable has a highly conductive, shielded screen around twisted
cable pairs. STP cables protect conductors from electromagnetic interference.
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