Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 Installation Instructions, PRIOR to Firmware rev. 3.0 - Manual (Page 54)

Publication 1404-IN007D-EN-P - October 2004
54 Powermonitor 3000
Field Service Considerations
If the Powermonitor 3000 requires servicing, please contact your
nearest Allen-Bradley Sales Office. To minimize your inconvenience,
the initial installation should be performed in a manner which makes
removal easy.
1. A CT shorting block should be provided to allow the
Powermonitor 3000 Master Module current inputs to be
disconnected without making the user-supplied CT’s an open
circuit. The shorting block should be wired to prevent any effect
on the external protective relays.
2. All wiring should be routed to allow easy maintenance at
connections to the Powermonitor 3000 terminal strips and the
Powermonitor 3000 itself.
Firmware Upgrades
Powermonitor 3000 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 M5 Master
module to an M6 or M8, or your M6 to an 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
using the native RS-485 communications port. Firmware upgrades may
be performed without removing the Powermonitor 3000 from its
ATTENTION
Never open a current transformer (CT) secondary
circuit with primary current applied. Wiring between
the CTs and the Powermonitor 3000 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.