PM2007HPE South African Micro-Electronic Systems, PM2007HPE Datasheet

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PM2007HPE

Manufacturer Part Number
PM2007HPE
Description
Evaluation Module For The SA2007HPA Metering ic
Manufacturer
South African Micro-Electronic Systems
Datasheet
INTRODUCTION
This Application Note describes the functionality of the
SA2007H metering integrated circuit using the PM2007HPE
evaluation module. The SA2007 family is a low cost solution
specifically designed to meet the needs of markets that require
both live and neutral energy measurement to detect possible
meter tampering.
Using the SA2007H family the meter manufacturer is able to
build a meter that measures the energy consumption, on both
live and neutral, with a separate pulse output for each channel.
The PM2007HPE module is designed for a single-phase
application monitoring both live and neutral lines. The mains
voltage easily connects to the module by way of a Molex
connector (CON1). The 2 on-board current transformers
measure the current in both the live and neutral. A transformer
based power supply supplies the SA2007H energy metering IC
with power. The SA2007H forms the energy/power metering
front-end of the module.
The PM2007HPE module can easily be connected to a micro-
controller via connector CON2 thereby creating a complete
power meter.
THE SA2007H ENERGY METER IC
The SAMES SA2007H is a single phase bidirectional dual
element energy metering integrated circuit. It provides a simple
analog interface to a micro-controller and is specifically
designed for meter manufacturers to have full control over the
meter functionality.
The SA2007H has two current sensor inputs. The power
consumption on both inputs are continuously measured. A
typical application would be to monitor Live and Neutral lines
for tamper detection.
For each current sensor input the SA2007H integrated circuit
has a corresponding pulse output, each generating a pulse
rate with a frequency proportional to the power consumption
measured on the specific channel.
More detailed information specific to the SA2007H can be
found in its datasheet.
SA2007H Application Note:
Energy Meter Evaluation Module with Pulse
Output
SPEC-0939 (REV. 2)
PM2007HPE
1/8
MAINS CONNECTION TO MODULE
The PM2007HPE module connects directly to live and neutral
on CON1. The module is referenced to neutral and this should
be kept in mind when connecting test equipment to the module.
CON2 is used for connection to a micro-controller.
Neutral
MODULE SETUP
The PM2007HPE module is setup for use with the SA2007H
integrated circuit. Resistor values used on the module is
calculated for rated conditions of 60A/230V.
Name
Con2
Con1
Name
Live
Figure 1: Connection diagram for normal metering application
J5
J6
J7
J8
Table 2: Jumper settings for various device options
Function Description
Select between latched or
unlatched mode (OMODE)
Test input, pin 15
Connector for the 230VAC power
for the module
Connector for micro-controller
RP jumper, pin 7. Reset
latched mode.
TCLK to VSS for normal
operation.
Function Description
Table 1: Connector Descriptions
sames
SA2007H setting
+ +
+
SA2007H
1
2
Neutral
Live
23-05-03
+

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PM2007HPE Summary of contents

Page 1

... A transformer based power supply supplies the SA2007H energy metering IC with power. The SA2007H forms the energy/power metering front-end of the module. The PM2007HPE module can easily be connected to a micro- controller via connector CON2 thereby creating a complete power meter. THE SA2007H ENERGY METER IC The SAMES SA2007H is a single phase bidirectional dual element energy metering integrated circuit ...

Page 2

... PM2007HPE MODULE OVERVIEW ANALOG SECTION The analog (metering) interface described in this section is designed for measuring 230V/60A with precision better than Class 1. The most important external components for the SA2007H integrated circuit are the current sense resistors, the voltage sense resistors and the bias setting resistor. The resistors used in the metering section should be of the same type so temperature effects are minimized ...

Page 3

... Common mode and asymmetrical transients are attenuated by the current setting resistors R8, R9, R10 and R11. POWER SUPPLY The PM2007HPE module uses a transformer based power supply. The maximum current that is drawn by the circuit is as follows: The average power consumption of the module is usually less that those indicated in Table 3 ...

Page 4

... PM2007HPE COMPONENT LISTS The following component list covers all components fitted on the PM2007HPE module as shipped and configured for the SA2007H device. Symbol Description U1 SA2007HPA 78C05, Voltage regulator IC2 D1, D2, D3, D4 Diode, Silicon, 1N4148 R1, R2, R3 Resistor, 120k, 1/4W, 1%, metal Resistor, 10R, 2W, Wire wound ...

Page 5

... PM2007HPE PCB LAYOUT Con1 http://www.sames.co.za TP3 + + con2 Figure 4: Component layout 5/8 sames U2 U3 ...

Page 6

... PM2007HPE http://www.sames.co.za Figure 5: PM2007HPE top side Figure 6: PM2007HPE bottom side 6/8 sames ...

Page 7

... PM2007HPE Figure 7: Schematic diagram of the complete PM2007HPE module http://www.sames.co.za http://www.sames.co.za 15/16 7/8 sames ...

Page 8

... PM2007HPE PM9607AP DISCLAIMER: The information contained in this document is confidential and proprietary to South African Micro-Electronic Systems (Pty) Ltd ("SAMES") and may not be copied or disclosed to a third party, in whole or in part, without the express written consent of SAMES. The information contained herein is current as of the date of publication; however, delivery of this document shall not under any circumstances create any implication that the information contained herein is correct as of any time subsequent to such date ...

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