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ST STEVAL-IHT001V1, Руководство пользователя

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Kit introduction

UM0277

4/32

  

1 Kit 

introduction

1.1 Package 

contents

This package (

Figure 1

) includes the following items:

●

A thermostat board (ref.: STEVAL-IHT001V1)

●

A M2020 5k NTC thermistor from EPCOS (ref.: M2020/5k/A17) 

●

A CD-ROM, including products presentations and data-sheets, user manual, 
Application Notes and the GUI software.

●

“Getting Started” User Manual (this document)

●

The insulated PC interface board (ref.: MC/UNI/0001.01 PC-INTERFACE ver.1.1)

●

A 230VAC/9VDC insulated power supply for the SCI interface board

●

One RS-232 Interface cable

●

One SCI Interface cable

Figure 1.

Package contents

RS232 Interface 

cable

230VAC/9VDC 

insulated power 

supply

M2020 5k NTC

thermostat board 

SCI Interface 

cable

PC insulated 

interface board

RS232 Interface 

cable

230VAC/9VDC 

insulated power 

supply

M2020 5k NTC

thermostat board 

SCI Interface 

cable

PC insulated 

interface board

Содержание STEVAL-IHT001V1

Страница 1: ...ation via the Serial Communication Interface SCI This enables users to easily change MCU software parameters and acquire measurements during appliance testing This document provides all the informatio...

Страница 2: ...1 ACS and ACST devices 8 2 3 2 ST7LITE39F2 microcontroller 9 2 3 3 Capacitive power supply 9 2 4 Graphic user interface GUI 10 3 Getting started 11 3 1 Load power 11 3 2 Measure points 11 3 3 Pulse c...

Страница 3: ...3 32 Appendix D Bill of materials 25 Appendix E Procedure to apply IEC 61000 4 4 bursts test 28 Appendix F PC interface parameters description 29 Appendix G Capacitor value according to country 30 Rev...

Страница 4: ...tting Started User Manual this document The insulated PC interface board ref MC UNI 0001 01 PC INTERFACE ver 1 1 A 230VAC 9VDC insulated power supply for the SCI interface board One RS 232 Interface c...

Страница 5: ...if the door is opened for an extended time SCI connector for communication between the board and a computer using the GUI software An In Dart connector to load the firmware in the MCU Warning To avoi...

Страница 6: ...is a class II sensor and can be put on non earthed accessible and conductive parts 2 2 Ensured functions 2 2 1 Temperature control The thermal sensor used is an NTC thermal resistor thermistor from E...

Страница 7: ...can connect an external switch using the Door connector J13 Note that if the fridge door or the Door switch is in open position more than one minute the buzzer will ring and the LEDs will flash The bu...

Страница 8: ...www st com thyristors Table 1 sums up the main differences between ACS and ACST switches and traditional TRIACs Sumof Compressor ONtimes DEFROST ACTIVATIONDELAY Defrost enabled TEMP1 TEMP2 DEFROST Com...

Страница 9: ...230V RMS line voltage For higher or lower currents the C3 capacitor can be changed Table 3 lists the maximum allowed average current versus the different C3 capacitor values for typical application co...

Страница 10: ...nt i e sourced from the gate 2 4 Graphic user interface GUI A Graphic User Interface GUI is provided to set ST7LITE39F2 Microcontroller parameters and to access MCU information through the Serial Comm...

Страница 11: ...0 2 A RMS permanent current up to an ambient temperature of 90 C The ACS102 6TA can drive the common light bulbs found in Fridge or Freezer without any problem Indeed a 25 W bulb will always sink a cu...

Страница 12: ...idth for switch Q1 compressor T2 is the gate current pulse width for switches Q2 and Q3 light bulb and defrost resistor Figure 6 Timing definition for gate current pulses Note The gate currents are ne...

Страница 13: ...llow temperature selection push button operation Connect the loads on the thermostat board Compressor to MOTOR connector Defrost resistor to DEFROST connector Light bulb to LIGHT connector In case of...

Страница 14: ...screen Figure 7 explains how to connect the different STEVAL IHT001V1 kit boards and the computer Figure 7 STEVAL IHT001V1 thermostat kit connections An insulated interface is required in order to co...

Страница 15: ...First check that the 230V 9V insulated power supply is correctly set the Volt switch to the 9V position and the Polarity switch to the Positive position Figure 9 3 In case of a problem ensure that th...

Страница 16: ...tat order or LED temperature High then the Evaporator Temperature Order is Evaporator Temperature Order 1 If Thermostat order or LED temperature Medium then the Evaporator Temperature Order is Evapora...

Страница 17: ...ely Figure 11 Timing control tab The ZVS delay is the delay between the AC mains zero voltage and the detection of this zero voltage by MCU in order to synchronize the MCU orders with the AC mains vol...

Страница 18: ...oard validation Figure 13 In order to control these AC Loads it is necessary to click the Debug Mode button In this case the green lights of the AC Loads buttons are ON if the associated loads are als...

Страница 19: ...compressor cycle information running period and duty cycle and the Mains frequency For more information refer to the Help menu of the GUI software To enable data acquisition press the Acquisition butt...

Страница 20: ...at kit to Check the immunity of this ST solution Easily check the efficiency gains by hysteresis threshold reduction Define the better management of the defrost cycles to improve the overall efficienc...

Страница 21: ...ing to the relationship below Equation 2 To make the relationship of Equation 2 to vary linearly it s enough to ensure that the second order derivative will be zero Equation 3 gives the R12 value to e...

Страница 22: ...Thermal sensor linearization UM0277 22 32 Figure 14 Linear voltage response of the NTC thermistor for a 5V supply...

Страница 23: ...just a resistor The same procedure can be achieved for the Light Bulb and Defrost resistors For the motor things are more complex The two following figures show where the RUN and LINE terminals are u...

Страница 24: ...TP10 NTC R10 750 TP9 DOORSW TP7 LIGHT R5 390 1 2 J4 LIGHT VDD R9 750 TP5 RUN CTS TP6 DEFROST R7 150k 1 4W TW OSCI CLKIN TP12 BUZZER R17 4 7K 1 2 J2 MOTOR VDD R3 150 1 2 J11 NTC VDD R13 10k R2 51 1 4W...

Страница 25: ...4W 5 R13 Resistor 10 kOhm 1 4W 5 R14 Resistor 10 kOhm 1 4W 5 R15 Resistor 200 Ohm 1 4W 5 R16 Resistor 4 7 kOhm 1 4W 5 No connected R17 Resistor 4 7 kOhm 1 4W 5 R18 Resistor 1 MOhm 1 4W 5 C1 Capa Polye...

Страница 26: ...ders For RS232 communication J11 Female connector 2 inputs NTC J12 Switch J13 Female connector 2 inputs DOOR Switch U1 ST7FLITE39F2B6 DIP20 N A DIP 20 Socket Socket for MCU Q1 ACST6 7ST Motor switch Q...

Страница 27: ...TRAP Length is given from pad to pad S2 STRAP S3 STRAP J6 J7 J8 J9 Corner Spacer Screw J6 J7 J8 J9 Corner Spacer Nut Fuse Fuse 5x20mm 8A 250V N A Fuse socket N A Socket hood Table 5 Bill of materials...

Страница 28: ...very stressful tests but still comply with EN61000 4 4 specifications These main arrangements are Thermostat Board loads and mains wires are placed 10 cm above the ground reference The mains wire is s...

Страница 29: ...lb Control Input N A 0 0 OFF or 1 ON Compressor phase shift T1 Input Output ms 0 5 0 1 to 4 0 1 Gate current pulse width for compressor T3 Input Output ms 1 0 1 to 4 0 1 ZVS delay Input Output s 50 5...

Страница 30: ...or value 10 minimum RMS line voltage output DC current capabilities are included for information Table 7 C3 capacitor value according to the country Country Typical RMS Voltage Minimum RMS voltage Fre...

Страница 31: ...UM0277 Revision history 31 32 Revision history Table 8 Document revision history Date Revision Changes 28 Aug 2006 1 Initial release...

Страница 32: ...NTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT UNLESS E...

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