Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 Master Module Installation Instructions - Manual (Page 4)

4 Powermonitor 3000 Master Module
Publication 1404-IN007F-EN-P - November 2009
Safety Considerations
PT Potential transformer (also known as VT in some countries)
RAM Random access memory
RFI Radio frequency interference
R I/O Remote input/output
RMS Root–mean–square
SLC Small logic controller
SPDT Single pole double throw
UL Underwriters Laboratories
VA Volt–ampere
VAR Volt–ampere reactive
CIP Control and information protocol
NAP Network access port
ATTENTION
Only qualified personnel, following accepted safety procedures, should install, wire, and
service the Powermonitor 3000 unit and its associated components. Before beginning
any work, disconnect all sources of power and verify that they are de-energized and
locked out. Failure to follow these instructions may result in personal injury or death,
property damage, or economic loss.
Never open a current transformer (CT) secondary circuit with primary current applied.
Wiring between the CTs and the Powermonitor 3000 unit should include a shorting
terminal block in the CT secondary circuit. Shorting the secondary with primary current
present allows other connections to be removed if needed. An open CT secondary with
primary current applied produces a hazardous voltage, which can lead to personal injury,
death, property damage, or economic loss.
Terms and Conventions
Abbreviation Term