Specifications

Two Phase Power Meter Reference Design Block Diagram

Microcontrollers (MCUs)

KM1x : 50 MHz, Mainstream Precision Metrology Microcontrollers based on Arm^® Cortex^®-M0+
KM3x : 50–75 MHz Precision Metrology MCUs with Segment LCDs based on Arm^® Cortex^®-M0+

Sensor

FXOS8700CQ : Digital Motion Sensor - 3D Accelerometer (±2g/±4g/±8g) + 3D Magnetometer

Wireless MCU

KW41Z : Kinetis^® KW41Z-2.4 GHz Dual Mode: Bluetooth^® Low Energy and 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm^® Cortex^®-M0+ Core

Features

200 A current range (CL200, TA 30A)
85 to 264 V, 50/60 Hz voltage range
Two types of installation: Form 2S or Form 12S
Accuracy class: ANSI C12.20-2002 Class 0.2
Line frequency measurement (for precision zero-cross detection)
Current transformer sensing circuit implementation for each phase
Low-power modes including the use of built-in RTC (Li-battery backup)
AMI expansion header supporting 2.4 GHz 802.15.4 or HAN/NAN (with 6loWPAN IPv6) communications for AMR and remote control
EMC proven design (ANSI C62.41, IEC 61000-4-4)

Peripherals

8 x 20 segment LCD, including charge pump
LED pulse outputs (kWh, kVARh)
Isolated (4 kV) RS-232 port for monitoring, parameterization, and firmware upgrade (optional)
Infrared optical port according to ANSI C12.18-2006 (optional)

Networking

Smart metering connectivity

Power and Energy

Two-phase meters

Buy

MKM14Z128ACHH5 ^Active
Kinetis KM14: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, 44-LGA

MKM14Z128ACHH5
10K @ US
$1.50

Sample

Availability?
Buy Direct

Availability?

Distributor

Distributor Name	Region	Inventory	Inventory Date

Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.

MKM14Z128ACHH5R
10K @ US
$1.50

Distributor

Distributor Name	Region	Inventory	Inventory Date

Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.

MKM33Z128ACLH5 ^Active
Kinetis KM33: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, Segment LCD, 64-LQFP

MKM33Z128ACLH5
10K @ US
$1.80

Sample

Availability?
Buy Direct

Availability?

Distributor

Distributor Name	Region	Inventory	Inventory Date

Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.

MKM33Z128ACLH5R
10K @ US
$1.80

Distributor

Distributor Name	Region	Inventory	Inventory Date

Upon selection of a preferred distributor, you will be directed to their web site to place and service your order. Please be aware that distributors are independent businesses and set their own prices, terms and conditions of sale. NXP makes no representations or warranties, express or implied, about distributors, or the prices, terms and conditions of sale agreed upon by you and any distributor.

Design Resources

Get Started

Get to Know the Two-Phase Power Meter Reference Design and MKM34Z128

Kinetis-M Two-Phase Power Meter - Reference Design^{(REV
0
)}
- 2.4 MB
- DRM149
- [ English ]

Application Note

FFT-Based Algorithm for Metering Applications - Application Note^{(REV
4
)}
- 642.7 kB
- AN4255
- [ English, 中文 ]
面向计量应用的基于FFT的算法 - 应用笔记 ^{(REV 4)}
PDF ( 642.7 kB)

Schematics
KM34Z128 1P3W Power Meter Schematics^{(REV
B
)}
- 151.4 kB
- SCH-27700
Design Files / BOM
Two Phase Power Meter Bill of Materials^{(REV
0
)}
- 15.7 kB
- TWO-PHASE-POWER-METER-BOM
Tools and Software
Two Phase Power Meter Design Files^{(REV
0
)}
- 1.5 MB
- TWO-PHASE-POWER-METER-DF
FreeMASTER tool 2.5 – Installer^{(REV
2.5.0
)}
- 31.4 MB
- FMASTERSW25

Two-Phase Power Meter Reference Design

Overview

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Schematics

Design Files / BOM

Tools and Software

Specifications