Freescale Semiconductor Reference Design Data Sheet MCF51EM256110RDDS Rev. 0, 10/2009 MCF51EM256-based Poly Phase Energy Meter Reference Design 110V Technical Specifications Electrical Connection type Direct connected (whole current) Wiring configuration 3 phase 4 wire, 1 phase 3 wire & 1 phase 2 wire Voltage rating 120 V +/-20% (L-N) Current range 15-100 A Accuracy Class 0.5 Frequency range 57 Hz to 63 Hz Pulse constant 800 impulses/kWh & 800 impulses/kVArh Standard compliance IEC 62053-11, IEC 62053-22, IEC 62053-23 & IEC62056-21 © Freescale Semiconductor, Inc., 2009. All rights reserved. Mechanical Dimensions (WxHxD) 168 x 242 x 84 mm Weight 1.745kg Enclosure Plastic (PC/ABS blends) Sealing Sealing screws provision Environmental Compliance IEC 60529 Ingress protection IP 51 (Indoor type meter) Operating Temperature -25˚C to +55˚C Storage Temperature -25˚C to +70˚C Humidity 95% Features Measurement parameters Voltage, Current, Frequency, kWh import/export, kVArh import/export/lead/lag, kW, kVAr, Power factor. Tamper Recording Logging of tampers with time stamp for Voltage Failure, Current Failure, Voltage unbalance, Current Unbalance and Cover open. LED indication for tamper Tamper counter showing number tampers from last reset of counter. Load profile Load profile interval period: 5, 10, 15, 30, 60 minutes and 1 day. Maximum demand Programmable MD interval period of 30 minutes and 60 minutes MD can be reset by using Reset key. Display Custom built metering specific LCD with backlight. Eight digits 7 segment display for parameters with symbol identifiers. Auto scroll Manual scroll using UP and DOWN keys Communication Optical port as per standard IEC 62056-21 RS 232 port for debug and BDM port for programming. Data security Data storage in non-volatile memory 2 Levels of password: for programming, configuration and for auto calibration. Output device LED pulses proportional to kWh, kVArh LED for Power on indication MCF51EM256-based Poly Phase Energy Meter Reference Design 110V Technical Specification, Rev. 0 2 Freescale Semiconductor How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.com/support USA/Europe or Locations Not Listed: Freescale Semiconductor, Inc. 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