04 Wiring | REG2000
4-1
04 Wiring
After removing the front cover, verify that the power and control terminals are clearly noted. Read the
following precautions before wiring.
Make sure that power is only applied to the R/L1, S/L2, T/L3, DC+, and DC- terminals. Failure to
comply may result in damage to the equipment. The voltage and current should be within the specified
range on the nameplate (Section 1-1).
All the units must be grounded directly to a common ground terminal to prevent lightning strike or
electric shock and reduce interference.
Securely tighten the main circuit terminal screws to prevent sparks caused by screws loosened by
vibration.
If a braking resistor is already installed in the existing system, keep the braking resistor for future use.
Set Pr.01-08 to the reasonable power regenerative level when equipping with a braking resistor:
(V
AC
Voltage Level x 1.414) < REG DC BUS voltage activation level (Pr.01-08) < braking resistor trigger
level. Use a reasonable margin to ensure that DC ripple does not trigger Pr.01-08 setting by mistake.
If the Power Regenerative Unit is NOT equipped with a braking resistor, pay attention to the
DFMEA
(Design Failure Mode and Effect Analysis). The Power Regenerative Unit provides full status
indication. Signals can be provided by external terminals to ensure system integration reliability.
If a Power Regenerative Unit is malfunctioning, it can send signals through communication and MOx
terminals.
DANGER
It is crucial to turn off the Power Regeneration Unit power before wiring.
A charge
with hazardous voltages may still remain in the DC BUS capacitors even if the
power has been turned off. Always measure the remaining voltage before
wiring. For your safety, do not perform any wiring before the voltage drops to a safe
level < 25 V
DC
. Wiring while voltage remains can cause sparks and short circuits.
Only qualified personnel familiar with the Power Regeneration Unit are allowed to
perform installation, wiring and commissioning. Make sure the power is turned off
before wiring to prevent electric shock.
When wiring, use wires that comply with local regulations for your safety.
Check following items after finishing the wiring:
1. Are all connections correct?
2. Are there any loosen wires?
3. Are there any short circuits between the terminals or to ground?
