historical archive product sheet

assemblies electronic meter (aem)
hot topics no picture available tech support		what was it modified 2/15/99 the assemblies electronic monitor (aem) was a microprocessor-based, self-contained, door-mounted device designed to perform monitoring and dsplay parameters of up to 40 circuit breakers that have the digitrip rms 700 and 800 trip units. providing a great means to view the status of the breakers without having to open the switchgear doors made this product a home run with our customers. with time comes new products. the 700's and 800's of the world were replaced by newer and even better trip units and this is when the aem ii was introduced. after compiling customer feedback over a two year period, then westinghouse engineers sat down and developed a scope for what was soon to become the asseblies electronic monitor ii (aem ii). the new product was to have the same faceplate dimensions as all other iq products as well as the original aem. the aem ii added the following to its features: an eight character alphanumeric description window. a 120 event trip buffer also accessable through the eight character window. the last 120 events would be stored chronologically a membrane nema type 3r, and 12 faceplate for harsh industrial environments. ul and csa listings. a non-volatile memory to retain information even after power loss. the aem ii subnetwork would support the iq data and the iq generator. it would now accept addresses 1-99. although there is still a maximum of 40 digitrips and 8 iq metering products. the subnetwork communication speed will be selectable between 1200 and 9600 baud. note: all devices on the subnetwork must communicate at the same speed. the unit contains a real time clock and performs time stamping functions at the device. these times are displayed at the unit. digitrip energy values are displayed on the aem ii. control power is provided by 120 or 240 vac and is auto selecting. the led's are larger and all displays are high intensity. there is a scrolling help function for all programmed and displayed values. a bicolored operational status led that flashes green for normal conditions, flash red when no subnetwork communications are taking place, and blink green and red when one or more devices on the subnetwork will not communicate. continue to the aem ii archive literature user's manual, td 17216 descriptive bulletin 8175

bponi

enables communications with the unit for situations where the information that this unit is monitoring is desired to be displayed on a computer or used in a plc and many other types of applications.