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Related Manuals for D&V Electronics CVT-7A
Summary of Contents for D&V Electronics CVT-7A
- Page 1 CVT-7A Voltage Regulator Tester Revision: 1.5 21 June, 2010 P/N: 805-0037 Revision: 14 (12 September 2002) P/N: 805-0032 • CVT-7A For Models: D&V Electronics Ltd 130 Zenway Blvd. Woodbridge, Ontario Canada L4H 2Y7 Tel: (905) 264-7646 Fax: (905) 264-0502...
- Page 2 “PDF” files, please visit Adobe’s Web Site: http://wwwadobecom/products/acrobat/readstep.html Before using the CVT-7A Regulator Tester: Before using the regulator tester, please read this manual carefully to use the equipment to its optimum. After reading this manual, please keep it in a safe place for later reference...
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Page 3: Table Of Contents
CVT-7A Users Manual Index Page # Safety Requirements Installation and Setup Machine Layout Diagram Electrical Power Requirements Setup Procedure Computer Connections Power Up / Power Down Sequence Adjust LCD Screen Contrast Operation With A Foot Switch How to use the Key Pad... - Page 4 Page # SPECS (Specification Menu) Setup New Part Number Edit Test Specifications Delete Test Specifications List Test Specifications (print catalogue) Erase All Data Communication CALIBRATION Appendix A Glossary of Terms CVT-7AManualV1.5.doc Page 2...
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Page 5: Safety Requirements
Safety Requirements! CAUTION: TO REDUCE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. PLEASE REFER TO A QUALIFIED SERVICE TECHNICIAN. A. Read Instructions: All safety and operation instructions should be read before the product is operated. - Page 6 J. Power Cord Protection: Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon them, paying particular attention to cords at plugs and the point where they exit the product. K.
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Page 7: Installation And Setup
Installation & Setup Rear View of Tester To regulator On & Off To foot switch or fixture Switch Fuses To plug harness or Power cord fixture receptacle Printer Rating plate on top of tester Electrical Power Requirements • Main Power: 120 or 220 VAC 50/60Hz.(Preset at factory, not user selectable) •... -
Page 8: Setup Procedure
Manual, Auto or Smart test with a footswitch. How to use the Key Pad • CVT-7A keyboard works in very similar way to a telephone keypad. To type numbers press the corresponding keys. To type letters (which are on number pads) press the key where the letter appear and hold the key down until the proper letter appears on the screen. -
Page 9: How To Activate Help Menu
entered. To finish entering press OK/Enter key to confirm the data. If you make a mistake, the last letter entered can be deleted by pressing 'DEL' key. • After a part number has been selected the testers remembers this part number until the tester is powered off. -
Page 10: Mode - F1
• MODE F1: switches between testing with a fixture and the plug with the test clips. In both modes it may be necessary, depending on the configuration of the regulators terminals, to also connect either a plug or clips to the regulator. •... -
Page 11: Test Modes
TEST Modes SELECT TEST MODE: MANUAL AUTO SMART Manual Test Mode will allow the operator to manually activate the measurement and checks of terminals and regulator functions individually. 1. Press the TEST key then, press the Manual F4 key to activate the manual test. The tester will ask a series of prompts to automatically configure the tester’s setup. -
Page 12: Instructions
• The Voltage Set Point (Battery) and the Field Voltage are displayed on screen. Lamp, Feedback, Stator and Momentary Field Voltages are also displayed. In manual mode it is possible to view the measured results while the test is active; however it is not possible to print these results. -
Page 13: Test Results
Smart Test Mode (sort mode) will allow the operator to quickly sort & test regulator models compared to the programmable limits and then, display Pass, Fail or Error messages. Smart mode utilizes D&V Electronics Smart Plugs for the CVT-7A Regulator tester only! See the SPECS section instructions to program limits. - Page 14 *** 3 pin denso smart harness *** sort lis/lic/lid/lid* regulators v1r1 press any key when ready! 5. After the test is complete the tester analyzes the results and compares them to the programmed limits. The displayed result will be the sorted regulator type specific to the function preloaded in the SMART plug.
- Page 15 5. Select the terminal configuration by pressing the key below the corresponding text. Press the button repeatedly until the desired terminal designation is displayed. The function key and screen is as follows: TACHO LAMP FEEDBACK SENSE NEXT P, W, AC L, D+ Lo Ig, R F, Fr, Li...
- Page 16 Enter minimum voltage set point: Enter maximum voltage set point: Enter lamp voltage @ stop: Enter maximum lamp voltage @ stop: Enter minimum LRC Delay: Enter Maximum LRC Delay: Enter minimum SSD Delay: Enter Maximum SSD Delay: Enter Maximum Set point @ computer: Enter minimum VSP @ RC Control: Enter maximum VSP @ RC Control: 14.
- Page 17 CALIBRATION To place the tester into Calibration Mode press and hold the SPECS button and turn the power switch on. A D&V # 420-0109 calibration harness and an accurate digital multimeter, that will measure voltage, are required to perform the calibration of the CVT- *** CVT-7 CALIBRATION MODE *** Enter password: The password is F1 F5 F2 F6.
- Page 18 Press F1 to start the calibration. Connect the calibration box to the tester and press any key when ready! Connect the Calibration Harness to the Tester leads. WARNING: The Field Switch on the Alternator Cable (Rev 2) MUST be in the B position when calibrating, or the + and –...
- Page 19 Connect a DMM, set to DC Volts to the leads on the Test Harness Enter the voltage reading: Enter the voltage value displayed on DMM with keypad and press ENTER. Press F5 to save the new calibration. If you have a printer connected to the serial port you can press F6 to print a calibration report: CVT-7 CALIBRATION REPORT No:..
- Page 20 APPENDIX Glossary of Terms – Alternators & Regulators Revision: 1.3 (21 June, 2010) • Alternator & For Models: Regulator Testers D&V Electronics Ltd 130 Zenway Blvd. Woodbridge, Ontario Canada L4H 2Y7 Tel: (905) 264-7646 Fax: (905) 264-0502 CVT-7AManualV1.5.doc Page 18...
- Page 21 Glossary of Terms The purpose of this document is to assist the user in understanding various alternator & regulator functions and how they relate to the testing environment. “A” Circuit: The regulator controls the voltage by switching the ground to the field circuit at a varying frequency.
- Page 22 Check for torque save regulator: When this test procedure is activated the tester will check to see if the alternator has the correct regulator function. Used on some Mitsubishi alternators, this function allows the engine to operate with less mechanical load after startup, by reducing the maximum output the alternator can produce.
- Page 23 Field: This is in reference to the type of field circuit used in the alternator. This function is used where alternators have external voltage regulators. There are two possibilities: “A” circuit and “B” circuit. Field Control Terminal: This is the alternator field terminal. Used for alternators with external voltage regulators.
- Page 24 Lamp Active: An alternator lamp terminal that is capable of producing current which can be utilized to drive small loads. In general alternators with diode trios are Lamp Active type. Lamp Inactive: In general this type of regulator has a switching device in the circuit that is activated to turn the dash indicator lamp ON or OFF if the unit is charging or not charging.
- Page 25 Maximum Voltage Set Point: The alternator or regulators maximum allowable output voltage. It is measured with a small load current applied (10 - 20 Amps). If the Voltage Set Point is too high it can damage the battery and other vehicle components. Measured Output: The amount of output measured from the master unit.
- Page 26 “RC” Terminal: (Regulator Control) line is a Pulse Width Modulated (PWM) signal from the Power Control Module (PCM) controlling the voltage set point of the regulator. When left open, the regulator resets the Li line to low level and the voltage set point to between 14.1 – 145.3 Volts.
- Page 27 SSD/LRC See Soft Start Delay (SSD), Load Response Control (LRC). Secondary Regulation: If the sense terminal is opened some voltage regulators default to a “failsafe” voltage for the alternator and system protection. Some regulators have a secondary regulation limit higher than the voltage set point. Typically. 12 Volt secondary regulation is 16 –...
- Page 28 Special function tests: Includes Check for Delco PCM lamp output, and others reserved for future use. Special regulator tests: Procedures can be activated that will separate and identify the use of the incorrect regulator for the application. These is useful especially where regulators are visually similar but have different functions.
- Page 29 Universal Harness Connector: The universal connector harness is provided for alternators or regulators where it is not possible to use a connector plug. The following table lists terminal designations as labeled on the alternator or regulator and the corresponding label and color of the universal plug harness.