Delta C2000 Series User Manual page 51

Chapter 4 Wiring
After removing the front cover, please checking if the power and control terminals are clearly
noted. Please read following precautions to avoid wiring mistakes.
It is crucial to
still remain in the DC bus capacitors with hazardous voltages even if the power has
been turned off only after a short time. Therefore it is suggested measure the
remaining voltage by DC voltagemeter before wiring. For your personnel saftery,
please do not start wiring before the voltage 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 is allowed to perform
installation, wiring and commissioning. Make sure the power is turned off before
wiring to prevent electric shock.
The main circuit terminals R/L1 S/L2 T/L3 is for power input. If the power is
wrongly connected to others terminals, it 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 units must be grounded directly to a common ground terminal to prevent
lightning strike or electric shock.
Please make sure to tighten the screw of the main circuit terminals to prevent
sparks due to the loosening of vibrations.
When wiring, please choose the wires with specification that complys with local
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?
before any wiring. A charge may
4-2