General Start-up
8
separate conduits from power and motor
wiring.
6. Verify that the input voltage matches the
drive’s rating.
7. Verify that the motor is wired for the
application voltage and amperage.
8. Tighten all of the three-phase power and
ground connections. Check that all
control and signal terminations are also
tight. As they sometimes come loose
during the shipment process.
Pre-Power Check
CAUTION
: TO PREVENT DAMAGE TO
THE DRIVE. THE FOLLOWING CHECKS
MUST BE PERFORMED BEFORE
APPLYING THE INPUT POWER.
•
Inspect all equipment for signs of
damage, loose connections, or other
defects.
•
Ensure the three phase line voltage is
within
±
10% of the nominal input voltage.
Also verify the frequency (50 or 60 Hz) is
correct for the elevator control system.
•
Remove all shipping devices.
•
Ensure all electrical connections are
secure.
•
Ensure that all transformers are
connected for proper voltage.
IMPORTANT: Double-check all the power
wires and motor wires (R, S, T, U, V, & W)
to make sure that they are securely
tightened down to their respective lugs
(loose wire connections may cause
problems at any time).
IMPORTANT: Insure the incoming line
supply IS CONNECTED to the drive INPUT
TERMINALS R, S, & T and NOT to the
output motor terminals U, V, & W.
9. Insure the DC Choke link is in place, if a
DC choke is NOT used.
10. Insure a Dynamic Braking Resistor is
connected to the drive, see page 152.
11. Measure and verify transformer primary
and secondary volts
12. Check for balanced Vac from phase to
ground.
13. Verify the accuracy of the drive’s input
line-to-line voltage in parameter INPUT
L-L VOLTS (A4)
NOTE: The INPUT L-L VOLTS (A4)
parameter helps to determine the DC bus
undervoltage alarm/fault level.
This completes the recommended general start-
up procedure. Please refer to the specific open
or closed-loop start-up procedure.