Rockwell Automation 2364 NRU/RGU DC Bus Energized Pilot Light and Legend Plate Replacement User Manual
Rockwell Automation Equipment
 
Replacement Kit Instructions
NRU/RGU DC Bus Energized Pilot Light and 
Legend Plate Replacement
Contents
This publication provides instructions for replacing the DC Bus Energized 
pilot light and legend plate on a Non-Regenerative DC Bus Supply Unit 
(NRU) or Regenerative DC Bus Supply Unit (RGU).
What This Kit Contains
• Bulletin 800MR Pilot Light and Legend Plate
Safety Precautions
The following general precautions apply to NRUs and RGUs and their 
respective drive systems:
!
ATTENTION: Only those familiar with the drive system, the products 
used in the system, and the associated machinery should plan or 
implement the installation, startup, and future maintenance of the 
system. Failure to comply can result in personal injury and/or 
equipment damage.
!
ATTENTION: Verify that the voltage on the bus capacitors has 
discharged before performing any work on the drive. Measure the DC 
bus voltage at the +DC & –DC terminals of the Power Terminal Block. 
The voltage must be zero.
!
ATTENTION: The system may contain stored energy devices. To 
avoid the hazard of electrical shock, verify that all voltage on capacitors 
has been discharged before attempting to service, repair, or remove a 
drive system or its components. You should only attempt the procedures 
in this manual if you are qualified to do so and are familiar with 
solid-state control equipment and the safety procedures in publication 
NFPA 70E.
!
ATTENTION: This drive contains ESD (Electrostatic Discharge) 
sensitive parts and assemblies. Static control precautions are required 
when installing, testing, servicing or repairing this assembly. 
Component damage may result if ESD control procedures are not 
followed. If you are not familiar with static control procedures, 
reference A-B publication 8000-4.5.2, Guarding Against Electrostatic 
Damage or other applicable ESD protection handbook.