Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 Master Module Installation Instructions - Manual (Page 55)

Powermonitor 3000 Master Module 55
Publication 1404-IN007F-EN-P - November 2009
Field Service Considerations
If the power monitor requires servicing, contact your nearest Rockwell Automation sales
office. To minimize your inconvenience, the initial installation should be performed in a
manner that makes removal easy.
• A CT shorting block should be provided to allow the Powermonitor 3000
master-module current inputs to be disconnected without making the user-supplied
CTs an open circuit. The shorting block should be wired to prevent any effect on the
external protective relays.
• All wiring should be routed to allow easy maintenance at connections to the
power-monitor terminal strips and the power monitor itself.
Firmware Upgrades
Power monitor firmware upgrades are of two types. Service upgrades are those that occur
from time-to-time to improve operation and resolve issues. Product upgrades are optional
firmware enhancements that you may purchase to convert your 1404-M5 master module to
an 1404-M6 or 1404-M8, or your 1404-M6 to an 1404-M8.
Service upgrades may be available at no charge. Contact your local Rockwell Automation
representative for information or visit the Internet at
http://www.ab.com/PEMS .
Product upgrades are available for purchase. Contact your Rockwell Automation
representative for additional information.
Master module firmware upgrades (of either type) are performed by using the native RS-485
communication port. Firmware upgrades may be performed without removing the power
monitor from its installation. An RS-485 to RS-232 converter is required to connect between
the power monitor and your personal computer communication port. Cycling power to the
power monitor may be required to complete the firmware upgrade.
Factory-installed Communication Cards
The RS-485 communication is integral to the master module and cannot be removed. Adding
or changing a second communication card to a power monitor must be done at the factory
and is not field upgradeable.
ATTENTION
Never open a current transformer (CT) secondary circuit with primary current applied.
Wiring between the CTs and the power monitor 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.