PM4100APD

PM4100APD SAMES | Alldatasheet

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Technical content

FEATURES

+ Compatible with SA4102A / SA2002E / SA2002H / SA2002P / SA2002D / SA2102D. All devices are PDIP20, except for the SA2002P which is PDIP16. + Connection of external sensing elements, mains and power supply by means of screw terminals. + Operation from either single +5V supply or dual rail supply (20mA). + Direction and pulse output indication by means of on-board LEDs. samessames Energy Meter Evaluation Module PM4100APD 1/14SPEC-1042 (REV. 3) 15-10-03 Figure 1: Functional Diagram + Current sensing via shunt or CT (on-board termination resistor). + Counter and stepper counter connections by means of screw terminals. + On-board precision calibration either by analog trimpot or digital Eeprom. + Direct connection to micro-controller. + Optically isolated output for connection to test equipment. + Easy accessible test pins INTRODUCTION The PM4100AD evaluation module is designed to demonstrate the functionality of the following devices SA4102A, SA2002E, SA2002H, SA2002P, SA2002D and SA2102D. The module is easily configured and setup for the various devices by means of on-board jumpers. The setup of the module is simplified with the help of the accompanying software that illustrates the jumper positions for each device. The measured energy is displayed on an on-board LED (PULSE), while a stepper motor counter or impulse counter can be connected to the screw terminals provided. A second LED (DIR) is used to indicate the energy direction. This application note should be used in conjunction with each device's specific datasheet for the individual device specifications and characteristics. DEVICE 4N35 24C01A GND IIN IIP STEPPER COUNTER PULSE MICRO PROGRAMER LIVE NEUTRAL VDD GND VSS DIR PULSE

The most important external components for any SAMES integrated circuit are the current and voltage sense resistors, as well as the bias setting resistors. These resistors must be of the same type as specified in the parts list to ensure that temperature effects and noise susceptibility is minimized. VOLTAGE INPUT IVP The voltage input is driven with a current of 14µARMS (11µARMS to SA4102A) at the nominal rated mains voltage. Please note that this input will saturate with currents bigger than approximately 17µARMS, which translates into a 20% overdrive capability. This also ensures that the device will not saturate with a 10% variance in mains voltage. The main voltage is divided down via a resistor network (see Figure 2) to 14V RMS. This voltage is fed to a 1M W resistor (R8) to realize the 14µARMS. The resistor values are chosen in such a way that shorting jumper J2 leads to half the voltage on the voltage divider output. This feature makes the module compatible for both 220V and 110V supply networks. Ignoring jumper J2 results in the following equations: RA = R5 + R6 + R7 + R10 samessamesPM4100APD 2/14http://www.sames.co.za The center position of P1 is used in the equation to ensure that calibration can be done by adjusting P1 to be higher or lower. Combining the two equations gives: (RA + RB)/220V = RB/14V Values for resistors R9 = 12k W, P1 = 20k W and R8 = 1M W is chosen. Substituting the values result in: RB = 26.29kW RA = RB x (220V/14V-1) RA = 386.84kW Choosing standard resistor values for R5, R6, R7, R10 and keeping in mind that J2 must half the output voltage leads to the following values: R5 = R7 = 82kW R6 = R10 = 100kW. Figure 2: Voltage divider circuit RA R5 R6 R7 R10 R8 RB NEUTRAL LIVE IN J26

5/14http://www.sames.co.za SA2002H (J6, J13, J15 to be used with Micro-controller) Name J11 J12 J13 J14 J15 J25 State B B B B A A A SA2002E Name J11 J14 J25 State B A A SA2002P Name J10 J11 J12 J15 J22 J25 State B B A B B B B A A A CLOSED A Table 3: Jumper options for SA2002P Table 4: Jumper options for SA2002H Table 5: Jumper options for SA2002E SA2002D Name J10 J11 J12 J13 J17, J18, J19 J20 J23 J25 State A A A A: Setting to A and J20 to + enables the FAST output mode. Leaving J10 and J20 open disables FAST mode and enables standard mode. B B A Rated conditions select (J17 for R0, J18 for R1, J19 for R2). Please refer to the SA2002D datasheet for further information. For Fast mode, any combination except all to +. For different normal mode settings, refer to the SA2002D datasheet. Note: On module + = VDD and - = VSS “+” : FAST mode enabled. “-” or OPEN: Standard mode enabled. Also see J10. “-” A A B Bi-Directional Energy Measurement Uni-Directional Energy Measurement Forward Reverse A A A A Table 6: Jumper options for SA2002D

6/14http://www.sames.co.za samessamesPM4100APD SA2102D Name J10 J11 J12 J13 J14, J15 J17, J18, J19 J20 J21 J23 J25 State A A A A: Setting to A and J20 to + enables the FAST output mode. Leaving J10 and J20 open disables FAST mode and enables standard mode. B B A B. Connect if a stepper motor or counter is to be connected. Rated conditions select ( ). Please refer to the SA2102D datasheet for further information. For Fast mode, any combination except all to +. For different normal mode settings, refer to the SA2102D datasheet. Note: On module + = VDD and - = VSS “+” : FAST mode enabled. “-” or OPEN: Standard mode enabled. Also see J10. CLOSED: Inserting the jumper enables the pulse stability circuitry. OPEN: Leaving it open disables the pulse stability circuitry. “-” A J17 for R0, J18 for R1, J19 for R2 A B Bi-Directional Energy Measurement Uni-Directional Energy Measurement Forward Reverse A A A A Table 7: Jumper options for SA2102D SA4102A Name J10 J11 J12 J13 J14, J15 J17, J18, J19, J21, J20 J23 J25 State A A A A B B A Set to B to enable stepper motor or counter connectors (CON 4 and CON 5) Rated conditions select (J17 for R0, J18 for R1, J19 for R2, J21 for R3). Please refer to the SA4102 datasheet for further information. Fms (see datasheet). Leave J20 open for fast pulse output. Filter output select. Set to + for Averaging filter. Set to - for Filtered instantaneous output. A Bi-Directional Energy Measurement A B Uni-Directional Energy Measurement Forward Reverse Table 8: Jumper options for SA4102A A A A A

http://www.sames.co.za Figure 9: Jumper positions Module Calibration The output frequency can be adjusted and calibrated by means of the variable resistor P1 connected in the voltage divider as shown in figure 2. PCB Design Considerations There are numerous PCB design aspects to consider when designing a power/energy meter, but only a few crucial aspects will be discussed here. The sense resistors on the current input, R2 and R3 must be located as close to the SAMES device input pins as possible. This also holds true for the 1MW resistor (R8), and the biasing resistor R4. Also note that the supply bypass capacitors C2, C3 and C4 (insert C5 and C6 for the SA2002P) must be positioned as close as possible to the supply pins of the device, and connected to a solid ground plane. It is advisable to keep the ground plane surrounding the device clear of noise that may influence the sensing signals. The module is protected from high transients on the main voltage input by means of a Metal Oxide Varistor. These MOVs will clamp any high transients with a sufficiently long rise time to neutral, hence protecting the PCB. When designing a meter, a MOV of type S20 should be used, as the S10 type titled here will not withstand high surge tests.

EVALUATION BOARD COMPONENT LIST Part Type Non-Polar 10uF 220nF 220nF 1uF 220nF 220nF 100nF 100nF 10uF CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS INLINE PINS Designator C10 CON1 CON2 CON3 CON4 CON5 CON6 CON7 J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J21 J22 J23 J24 J25 J26

Description

2.54mm, PITCH, NON-POLAR 16V, See page 3 for calculation of value 2.54mm, PITCH, TANTALUM. At least 10V 5.08mm, CERAMIC 5.08mm, CERAMIC 5.08mm, CERAMIC

0805 SMD CERAMIC, should be fitted for SA2002P

5.08mm PITCH, CERAMIC 5.08mm PITCH, CERAMIC 2.54mm PITCH, TANTALUM. At least 10V 5.08mm PITCH, 3-WAY SCREW TERMINAL 5.08mm PITCH, 3-WAY SCREW TERMINAL

7 Single Inline Pins

5.08mm PITCH, 2-WAY SCREW TERMINAL 5.08mm PITCH, 2-WAY SCREW TERMINAL 5.08mm PITCH, 5-WAY SCREW TERMINAL 5.08mm PITCH, 2-WAY SCREW TERMINAL

2 Single Inline Pins

3 Single Inline Pins

1 Single Inline Pins

EVALUATION BOARD COMPONENT LIST (Continued) Part Type LED LED 20k CT ONLY 100k 4k7 1k6 680R 680R RES (To be calculated) RES (To be calculated) RES 24k Standard. 47k for SA2102D / SA4102 A 82k 100k 82k 12k PB MAINS VDD VSS GND 14V DEVICE 24C01A 4N35 MOV INLINE PINS INLINE PINS INLINE PINS W W Designator R10 R11 R12 R13 R14 R15 R16 SK1 TP1 TP2 TP3 TP4 3mm, GREEN 3mm, RED Multiturn, Top Adjust 1/4 WATT, 1% METAL FILM RESISTOR. See CT Datasheet 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR

0805 SMD 1%

1/4 WATT, 1% METAL FILM RESISTOR. See page 3 1/4 WATT, 1% METAL FILM RESISTOR. See page 3 1/4 WATT, 1% METAL FILM RESISTOR (As default this position is left open, fit Resistor according to device used) 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR 1/4 WATT, 1% METAL FILM RESISTOR Miniature Pushbutton, Push to make

5.08 PITCH, 3-WAY SCREW TERMINAL

20 PIN DIL, Tulip Type Socket

8 PIN DIL, Tulip Type Socket

1k 128x8 CMOS EEPROM - MICROCHIP

6 PIN DIL, Tulip Type Socket

4N35, 6 PIN DIP S10/K320; Use type S20 when designing a meter

Figure 10: Schematic Diagram VDD8 VREF3 IIP2 IIN1 GND 20 IVP 19 VSS 14 SA2002E/H/P/D/ SA2102D/SA4102A RESR3 RESR4 RES J7J19 J17 J10 J11 J25 OPTO/MICRO J18 J14 J12 J13 J15 J4 J6 VDD VSS RLOAD VDD FMO MON FAST VDD MOP LED MOP VSS LED DIRO VSS MON FMO SDA J22 JUMPS2 SCL DIRO LED DIRI R10 100k 82k 100k 82k See notes 20k 1uF/Non-Polar SK1 MAINS GND GND VSS CTONLY CT GND CON1 POWER SUPPLY CON2 CURRENT VDD VSS GND 230V/110V VDD VSS SCL SDA LED RLOAD PB VSS CON3 PROGRAM A01 A12 A23 VSS4 VCC 8 TEST 7 SCL 6 SDA 5 24C01A VDD R12 1k6 R11 4k7 VSS SCL SDA MON MOP VSS PULSE DIR R13 680R VDD DIRO VDD VSS J16 DIRODIRO LED VDD CON6 MICRO VDD FMO F_OUT DIRO VSS 222 4 4 666 4N35 R14 680R CON7 PULSE F_OUTVDD VSS GND 220nF 220nF 820nF/1uF TP1 VDD TP2 VSS TP3 GND TP4 14V VDD VSS GND 14V VSS VDD J20 FAST 2CON4 STEPPER 2CON5 COUNTER MOP 14V J24 J26 GND GND C10 R15 R16 VDD VSS GND VDD J23 VDD J21 VSS VSS J12

NOTES:

samessamesPM9607AP samessamesPM4100APD DISCLAIMER: The information contained in this document is confidential and proprietary to South African Micro-Electronic Systems (Pty) Lt d ("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. SAMES does not undertake to inform any recipient of this document of any changes in the information contained herein, and SAMES expressly reserves the right to make changes in such information, without notification, even if such changes would render information contained herein inaccurate or incomplete. SAMES makes no representation or warranty that any circuit designed by reference to the information contained herein, will function without errors and as intended by the designer. 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 our web site: http://www.sames.co.za. SOUTH AFRICAN MICRO-ELECTRONIC SYSTEMS (PTY) LTD Tel: (012) 333-6021 Tel: Int +27 12 333-6021 Fax: (012) 333-8071 Fax: Int +27 12 333-8071 P O BOX 15888 LYNN EAST 0039 REPUBLIC OF SOUTH AFRICA

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