Rockwell Automation 1420 PowerMonitor 500 - Manual (Page 9)

Rockwell Automation Publication 1420-UM001D-EN-P - September 2013
9
Chapter
1
PowerMonitor 500 Overview
About the PowerMonitor 500
Unit
The PowerMonitor 500 unit is an AC power monitor with a built-in advanced
configuration system and LCD data display. The unit is designed for
measurement of electrical parameters in a variety of three-phase and single-phase
circuits. The unit is enclosed in a modular housing for panel mounting, with
IP65 degree of protection in front of the panel. The power monitor can be
provided with analog or digital outputs. These outputs can be selected to output
a pulse proportional to the real and reactive energy measured, or to annunciate
alarms. The instrument can also be equipped with a serial RS-485/RS-232 port,
or an EtherNet/IP port, and analog outputs.
Equipped with an optional communication port, the unit communicates power
and energy parameters to applications, such as FactoryTalk® EnergyMetrix™
software. The power monitor works with these software applications to address
these key customer applications:
• Load profiling - log power parameters such as real energy, apparent power,
and demand, for analysis of power usage by loads over time
• Cost allocation - reporting actual energy cost by department or process to
integrate energy information into management decisions
• Billing and sub-billing - charging users of energy the actual usage cost
rather than allocating by square footage or other arbitrary methods
• Power system monitoring and control - display and control power flow and
energy utilization
PowerMonitor 500 Features
and Functions
The power monitor connects to the user's three-phase or single-phase AC power
system directly or through instrument transformers (PTs and CTs). It converts
instantaneous voltage and current values to digital values, and uses the resulting
digital values in calculations of voltage, current, power, energy, and demand.
The power monitor family includes several models that combine the following
basic components:
• A panel-mounted power monitor in one of two AC voltage ranges: 240
(208Y/120V) or 690Y/400V
• An optional pair of relay outputs
• An optional pair of 0…20 mA analog outputs
• Optional serial RS-232/RS-485 communication supporting Modbus
RTU
• Optional Ethernet port supporting EtherNet/IP and Modbus TCP
• Front protection degree: IP65, NEMA 4X, NEMA 12