Chapter 4 Wiring - Delta CT2000 Series User Manual

After removing the front cover, examine if the power and control terminals are clearly noted. Please
read following precautions before wiring.
 It is crucial to turn off the AC motor drive power before any wiring installation are
made. A charge may still remain in the DC bus capacitors with hazardous voltages
even if the power has been turned of f therefore it is suggested for users to measure
DANGER
the remaining volt age before wiring. For your personnel saf tery, please do not
perform any wiring before the volt age drops to a safe level < 25 Vdc. Wiring
installation with remaninig voltage condition may caus sparks and short circuit.
 Only qualified personnel familiar with AC motor drives
installation, wiring and commissioning. Make sure the power is turned of f before
wiring to prevent electric shock.
 Make sure that power is only applied to the R/L 1, S/L2, T/L3 terminals. Failure to
comply may result in damage to the equipments. The voltage and current should lie
within the range as indicated on the nameplate (Chapter 1-1).
 All the unit s must be grounded directly to a co mmon ground terminal to prevent
lightning strike or electric shock.
 Please make sure to f asten the screw of the
sparks which is made by the loose screws due to vibration
 When wiring, please choose the wires with specificat ion that complys with lo cal
regulation for your personnel safety.
 Check following items after finishing the wiring:
1.
2.
3.
Are all connections correct?
Any loosen wires?
Any short-circuits between the terminals or to ground?

Chapter 4 Wiring

main circuit terminals to prevent
4-1
Chapter 4 WiringCT2000 Series
is allowed to perform