PM9110BFA [SAMES]
MONOCHIP THREE PHASE BIDIRECTIONAL KILOWATT HOUR METERING MODULE; MONOCHIP三相双向千瓦时计量模块型号: | PM9110BFA |
厂家: | SAMES |
描述: | MONOCHIP THREE PHASE BIDIRECTIONAL KILOWATT HOUR METERING MODULE |
文件: | 总14页 (文件大小:165K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SA9110A APPLICATION NOTE
sames
PM9110BF
MONOCHIP THREE PHASE BIDIRECTIONAL
KILOWATT HOUR METERING MODULE
FEATURES
according to IEC1107 Mode D
! Performsbidirectionalenergymetering
and includes a 7 digit LCD driver with
announciators
! Pulse output for calibration
! Total power consumption rating below
! 4externallyselectableon-chiptariffreg-
100mW
isters
! Uses current transformers for current
! An additional total energy register
sensing
! Meets the accuracy requirements for
! Operatesoverawidetemperaturerange
! Demonstrationsoftwareincluded
Class 1 AC Watt hour meters
! Optical interface for electronic reading
DESCRIPTION
The SAMES monochip three phase bidirectional kilowatt hour metering module, the
PM9110BF, provides all the required metering functions including energy measure-
ment, a 7 digit LCD driver, a tariff selection facility, an optical port as well as a pulse
output for calibration purposes.
Energy consumption is determined by the power measurement being integrated over
time.
This method of calculation takes the power factor into account.
This application utilises the SAMES SA9110AFA monochip three phase bidirectional
kilowatt hour metering IC for energy measurement.
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PM9110BFX
PDS038-SA9110A-001
REV. 2
28-06-00
PM9110BF
BLOCK DIAGRAM
LOAD
TARIF
DISPLAY
SCROLL
RESET
SELECT
PCLK
ISOLATED
CALIBRATION
INTERFACE
PDTA
PGM
SA9110A
PULSE
OUTPUT
BATTERY
BACKUP
OPTICAL
PORT
EXTERNAL
POWER SUPPLY
5V POWER
SUPPLY
DR-01103
SUPPLY
ABSOLUTE MAXIMUM RATINGS*
Parameter
Supply Voltage (Note 1)
Storage Temperature
Symbol
VAC
Min
Max
540
+125
Unit
V
°C
TSTG
-25
-10
Operating Temperature
TO
+70 (Note 2)
°C
Note 1:
Note 2:
Voltages are specified with reference to Neutral
The SA9110A integrated circuit is specified to operate over the temperature
range -10°C to +70°C. The module functionality will, however, depend upon
the external components used.
*Stresses above those listed under “Absolute Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only. Functional operation of the device
at these or any other conditions above those indicated in the operational sections of this
specification, is not implied. Exposure to Absolute Maximum Ratings for extended
periods may affect device reliability.
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ELECTRICAL CHARACTERISTICS
(Over the temperature range -10°C to +70°C, unless otherwise specified. Power
consumption figures are applicable to the PM9110BFE only.)
Parameter
Symbol Min Typ Max Unit Condition
Supply Voltage (x3 Phase)
(Continuous)
VAC
180 230 265
V
PM9110BFE
Power Consumption
100 mW From external
power supply
Isolation Voltage1
Opto-coupler Output
Current
Opto-coupler Input
Current
VIS
IO
2500
V
Continuous
10
mA VOL = 1V
mA
II
10
Note 1: Isolation voltage may be specified, depending on customer requirements.
PIN DESCRIPTION
Designation
Description
SK1
5-Pin
Isolated programming interface
Header
connector
SK2
2-Pin
Isolated pulse output
Header
connector
MAINS
Voltage Supply Connected to Phase 1
Voltage Supply Connected to Phase 2
Voltage Supply Connected to Phase 3
Voltage Supply Connected to Neutral Line (common)
CT1
CT2
CT3
Phase 1 (Orientation indicated on PCB)
Phase 2 (Orientation indicated on PCB)
Phase 3 (Orientation indicated on PCB)
POWER
5V DC Supply Voltage
0V DC Supply Voltage
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FUNCTIONAL DESCRIPTION
1. Energy Calculation
This Application Note should be read in conjunction with the SA9110A Data Sheet.
In the Application Circuit (see Figure 2), the output current from the current sensors
will be between 0 and 16µARMS. The current input stage of the module saturates at
input currents greater than18µARMS. The mains voltage (Voltage + 15% - 20%) is
used to perform the energy calculation, together with the current information from
the current sensor (current transformers).
The SA9110AFA integrated circuit may be adjusted to accomodate any voltage or
current values. The method for calculating external component values is described
in section 9 (Circuit Description).
The accumulated energy is directly displayed on a 7 digit LCD. This unique
application offers a host of additional features, which are dealt with below.
2. Electrostatic Discharge (ESD) Protection
The device's inputs/outputs are protected against ESD. The modules resistance to
transients will be dependant upon the protection components used.
3. Power Consumption
The overall power consumption rating for this power metering application (Figure
2), is under 100mW, excluding the current sensors.
4. Isolation
The programming interface and pulse output are isolated from the module which
is at mains potential, via opto-couplers.
5. Isolated Programming Interface
This isolated interface is provided to allow the user to programme the tariff register
values, calibration constants and manufacturer/meter identification codes. This
port is enabled by inserting the jumpers J8, J9 and J10. The programming may be
performed via the parallel port of a personal computer.
The designation of the pins on connector SK1 are given below:
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PM9110BF
Description
PC Parallel Connectors (Suggested)
Pin
Pin
Description
1
2
3
4
5
GND
PB
PCLK
PDTA
PGM
18
2
4
5
3
GND
D1
D3
D4
D2
Note: The recommended connections above are applicable for the demonstration
software provided with the PM9110BF.
6. Optical Port
TheopticalporthasbeendesignedtomeettheIEC1107ModeDspecification. This
facillity offers a pulse output as well as a serial data meter reading facility.
Three types of interfacing elements from the PM9110BF are available:
a) Infra-red optical port
b) Red LED
c) Opto-coupler
In order to maximise the intensity of the element, it is suggested that only one of
the outputs be used at any one time.
Jumper
Element
J5
J6
J7
Opto Coupler
Infra Red LED
Red LED
7. Liquid Crystal Display (LCD)
The PM9110BF has a LCD comprising of seven digits with announciatiors.
To cater for compatibility with future devices four jumpers are provided for
backplane driving configurations. The PM9110BF boards are shipped to the
customer with jumpers in a default configuration.
8. Tariff, Scroll and Reset Functions
Tariff Selection
A dual DIP switch provides the user with the facility to set the active tariff register
in which consumption will be accumulated.
The active register is indicated on the LCD.
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PM9110BF
Scroll Facility
The 4 registers may be sequentially displayed by activating the scroll button. The
contents of the register selected for display is retained on the display for a period
of10seconds, providedthatthepushbuttonisnotactivatedduringthisperiod. After
the 10 seconds has elapsed, the display defaults to the "active" register defined by
the status of the tariff DIP switches.
The register selected for display via the scroll button is indicated by the relevant
announciatiors.
Reset Function
By pressing the Reset button the contents of the RAM of the SA9110A device is set
to the default conditions.
Jumpers J8, J9 and J10 must be removed to use this feature.
It is strongly recommended that the provision of this facility is not made available
on production meters.
9. Circuit Description
The module is supplied from an external 5V DC supply.
The most important external components are:
C7, C9, C10 and C11 are the outer loop capacitors for the integrated oversampling
A/D converters. The typical value of C7 is 2.2nF and the value of C9, C10 and C11
is 560pF.
The actual values determine signal to noise and stability performance. The
tolerances should be within ± 10%.
C4, C5, C6 and C8 are the inner loop capacitors for the integrated oversampling A/
D converters. The typical value of C4, C5, C6 and C8 is 3.3nF. Values smaller than
0.5nF and larger than 5nF should be avoided.
Terminated current sensors (current transformers) are connected to the current
sensor inputs of the SA9110A through current setting resistors (R8..R13).
The resistor values should be selected for an input current of 16µARMS into the
SA9110A at the rated line current.
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PM9110BF
The values of these resistors should be calculated as follows:
Phase 1:
R8 = R9 = (IL1/16mA) * R18/2
Phase 2:
R10 = R11 = (IL2/16mA) * R19/2
Phase 3:
R12 = R13 = (IL3/16mA) * R20/2
Where ILX
=
Secondary CT current at rated conditions.
Termination resistors of the three current transformers.
R18, R19 and R20
=
R + R1B, R4 and R15 set the current for the phase 1 voltage sense input. R2A + R2B,
R15A+P5 andR16 setthecurrentforphase2andR +R3B,R6+P6 andR17 setthecurrent
forphase3. Thevaluesshouldbeselectedsot3hAattheinputcurrentsintothevoltage
sense inputs (virtual ground) are set to 14mARMS for rated line voltage. Capacitors
C1, C2 and C3 are for decoupling and phase compensation.
R7 defines all on-chip bias and reference currents. With R7 = 24kΩ, optimum
conditions are set. Any changes to R7 will affect the output quadratically (i.e: ∆R
= +5%, ∆f = +10%).
XTAL is a colour burst TV crystal (f = 3.5795MHz) for the oscillator. The oscillator
frequency is divided down to 1.7897MHz on-chip and supplies the A/D converters
and the digital circuitry.
10. Demonstration Software
Serial communication with the SA9110A device is identical to the communication
found on the Single Phase family member, SA9109A. For this reason the
demonstrationsoftwarefortheSinglePhaseApplicationcircuitisusedfortheThree
Phase Application.
The software package which accompanies the demonstration unit requires an IBM
or compatible PC with MS-DOS installed. This software, supplied on a 1.44M 3½"
disk, will allow the user to read and write settings from/to the demonstration unit.
Ensure that the communication connectors are in place prior to start.
Insert the diskette into the drive and at the DOS prompt, type A:SA9109[enter]
Context sensitive help screen for each input field or command prompt are available
by invoking [alt] H or [F1] key.
An introduction is available by pressing the [F1] key immediately after installation.
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Figure 1: Connection Diagram
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PM9110BF
Figure 2: Application Circuit.
1 9
2 0
1 8
1 7
2 1
1 6
1 5
1 4
2 2
2 3
2 4
2 5
1 3
1 2
2 6
1 1
1 0
2 7
2 8
9
8
7
2 9
3 0
3 1
3 2
6
5
4
3
3 3
3 4
2
1
3 5
3 6
C O N 3
C O P 3
N C 6 1
6 1
4 4
2 6
2 4
1 3
1 1
1 0
N C 4 4
N C 2 6
N C 2 4
N C 1 3
N C 1 1
N C 1 0
C I N 2
C I P 2
S C R O L L
N C 9
9
S R [ 0 ]
S R [ 1 ]
C O N 2
C O P 2
6 7
6 8
S D 0
6 2
P B
C I N 1
C I P 1
6 6
P C L K
P D T A
6 3
6 4
C O N 1
C O P 1
P G M
6 5
R E S E T
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Parts List for Application circuit: Figure 2
Item Symbol Description
Detail
1
U1
U2
SA9110AFA
ILQ74 (Quad opto-coupler)
4N35 (opto-coupler)
PLCC-68
DIP-16
DIP-6
2
3
U3
4
XTAL
R1A
R1B
R2A
R2B
R3A
R3B
R4
R5
R6
R7
R8
Crystal 3.5795MHz
Colour burst TV
5
Resistor, 1%, ¼W, metal
Resistor, 1%, ¼W, metal
Resistor, 1%, ¼W, metal
Resistor, 1%, ¼W, metal
Resistor, 1%, ¼W, metal
Resistor, 1%, ¼W, metal
Resistor, 24k, 1%, ¼W, metal
Resistor, 22k, 1%, ¼W, metal
Resistor, 22k, 1%, ¼W, metal
Resistor, 24k, 1%, ¼W, metal
Resistor, 2.7k, 1%, ¼W, metal
Resistor, 2.7k, 1%, ¼W, metal
Resistor, 2.7k, 1%, ¼W, metal
Resistor, 2.7k, 1%, ¼W, metal
Resistor, 2.7k, 1%, ¼W, metal
Resistor, 2.7k, 1%, ¼W, metal
Resistor, 1M, 1%, ¼W, metal
Resistor, 1M, 1%, ¼W, metal
Resistor, 1M, 1%, ¼W, metal
Resistor, 2.7Ω, 1%, ¼W, metal
Resistor, 2.7Ω, 1%, ¼W, metal
Resistor, 2.7Ω, 1%, ¼W, metal
Resistor, 820Ω, 1%, ¼W, metal
Resistor, 820Ω, 1%, ¼W, metal
Resistor, 2MΩ, 1%, ¼W, metal
Resistor, 680Ω, 1%, ¼W, metal
Resistor, 2.2kΩ, 1%, ¼W, metal
Resistor, 2.2kΩ, 1%, ¼W, metal
Resistor, 2.2kΩ, 1%, ¼W, metal
Resistor, 2.2kΩ, 1%, ¼W, metal
Resistor, 2.2kΩ, 1%, ¼W, metal
Potentiometer, 4.7kΩ
Note 4
6
7
8
9
Note 4
Note 4
Note 4
Note 4
Note 4
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
R9
R10
R11
R12
R13
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
P5
Note 1
Note 1
Note 1
Multi turn
Multi turn
Note 2
Note 2
Note 2
P6
C1
C2
C3
C4
C5
C6
Potentiometer, 4.7kΩ
Capacitor, electrolytic, 1µF, 16V
Capacitor, electrolytic, 1µF, 16V
Capacitor, electrolytic, 1µF, 16V
Capacitor, ceramic, 3.3nF
Capacitor, ceramic, 3.3nF
Capacitor, ceramic, 3.3nF
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Parts List for Application circuit: Figure 2 (continued)
Item Symbol Description
Detail
44
45
46
47
48
49
50
51
52
53
54
55
C7
Capacitor, ceramic, 2.2nF
Capacitor, ceramic, 3.3nF
Capacitor, ceramic, 560pF
Capacitor, ceramic, 560pF
Capacitor, ceramic, 560pF
Capacitor, 100µF, 16V
Capacitor, 100nF
Capacitor, 100nF
Capacitor, 100µF, 16V
Capacitor, 820nF
C8
C9
C10
C11
C12
C13
C14
C15
C16
BAT
Note 3
Note 3
Battery, 1.2V
IR LED Infrared light emitting diode
56 RED LED Red light emitting diode
57
58
59
Q1
D1
D2
Photo transistor
Diode, 1N4148
Diode, 1N4148
60 SCROLL NO, push button
61
62
63
RESET NO, push button
TARIFF DIP switch, 2 pole
LCD
OEL-7678*
Note 1: Resistor (R8, R9, R10, R , R and R13) values are dependant upon the selected
values of the current tr1a1nsf1o2rmer termination resistors R18, R19 and R20
Note 2: Capacitor values may be selected to compensate for phase errors caused by
the current transformers
Note 3: Capacitor (C13) to be positioned as close to Supply Pins (VDD & VSS) of IC-1, as
possible
Note 4: See the table below detailing the component values for the selected voltage
standard
*The LCD display is available from:
JEBON CORPORATION
Unit 709, Poongsan Factoria Town,
1141-2, Baegsok-Dong, Ilsan-District,
Koyangcity, Kyonggi-Do, 411-360, Korea
Tel: +82-31-902-9161 (12 lines)
Fax: +82-31-902-7775/7776
Web site: http://www.jebon.com
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Item
Description
Symbol
PM9110BFE
PM9110BFA
115V
Detail
230V
200kΩ
180kΩ
200kΩ
180kΩ
200kΩ
180kΩ
5
6
7
8
9
R1A
R1B
R2A
R2B
R3A
R3B
120kΩ
82kΩ
120kΩ
82kΩ
120kΩ
82kΩ
10
ORDERING INFORMATION
Part Number
Description
PM9110BFA
PM9110BFE
3 X 115V, 3 X 80A Module
3 X 230V, 3 X 80A Module
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Notes:
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Disclaimer:
TheinformationcontainedinthisdocumentisconfidentialandproprietarytoSouthAfricanMicro-
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,deliveryofthisdocumentshallnotunderanycircumstancescreateanyimplicationthat the
informationcontainedhereiniscorrectasofanytimesubsequenttosuchdate. SAMESdoesnotundertaketoinform
anyrecipientofthisdocumentofanychangesintheinformationcontainedherein,andSAMESexpresslyreserves
therighttomakechangesinsuchinformation,withoutnotification,evenifsuchchangeswouldrenderinformation
containedhereininaccurateorincomplete. SAMESmakesnorepresentationorwarrantythatanycircuitdesigned
byreferencetotheinformationcontainedherein, willfunctionwithouterrorsandasintendedbythedesigner.
Any Sales or technical questions may be posted to our e-mail address below:
energy@sames.co.za
For the latest updates on datasheets, please visit out web site:
http://www.sames.co.za
South African Micro-Electronic Systems (Pty) Ltd
P O Box 15888,
Lynn East, 0039
Republic of South Africa,
33 Eland Street,
Koedoespoort Industrial Area,
Pretoria,
Republic of South Africa
Tel:
Fax:
012 333-6021
012 333-8071
Tel:
Fax:
Int +27 12 333-6021
Int +27 12 333-8071
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