AS M0026 User manual

2020.06.22
M0026
USER MANUAL
TESTER FOR DIODES
& RECTIFIERS
QUALIT Y WARRANTY INNOVATION SERVICE TRAINING UNIQUENESS

English
User Manual - M0026 Tester
CONTENTS
INTRODUCTION .....................................................................................................................2
1. PURPOSE...........................................................................................................................2
2. TECHNICAL CHARACTERISTICS.......................................................................................3
3. EQUIPMENT PACKAGE......................................................................................................4
4. DESCRIPTION OF THE DEVICE..........................................................................................4
5. OPERATION.........................................................................................................................5
5.1 Safety regulations ...........................................................................................................6
5.2 Rectifier testing...............................................................................................................6
5.3 Tester setup....................................................................................................................8
6. TESTER MAINTENANCE ....................................................................................................8
6.1 Cleaning and Care..........................................................................................................9
7. MAJOR FAULTS AND TROUBLESHOOTING......................................................................9
8. EQUIPMENT DISPOSAL ...................................................................................................10
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User Manual - M0026 Tester
INTRODUCTION
Tester for diodes and rectifiers is manufactured from quality components and materials.
This manual contains information about the purpose, configuration, design, operation, technical
characteristics and operating rules of M0026 tester.
The manufacturer reserves the right to change the design and software without prior notice tousers.
Read carefully this manual before putting M0026 (hereinafter referred to as the “Device”) into
operation, get special training at the equipment manufacturing facility if necessary.
M0026 has been engineered to satisfy the demand of big service stations and alternator repair
shops for the device which would allow quick and accurate rectifier health checks. Testing rectifiers
with the use of multimeter has always been the most common practice.This method has a significant
drawback - it doesn't help to identify the diode type and find the faulty one. The test current of a
standard multimeter is about 0.002A, which is too low compared to the diode operating currents.The
test current of M0026 is 0.9A which allows accurate diagnosing of a diode.
1. PURPOSE
M0026 is designed to test the performance and structural integrity of automotive alternator rectifiers
as well as of diodes separately.
The device detects:
-type of a diode (standard or avalanche);
-degradation of a diode (excessive forward voltage drop);
-avalanche diode reverse-breakdown voltage;
-diode breakdown;
-diode open-circuit failure;
-poor contact between the diode and the conductive busbars.
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User Manual - M0026 Tester
2. TECHNICAL CHARACTERISTICS
Dimensions (L*W*H), mm
Weight, kg
Supply voltage, V
Supply frequency, Hz
Supply type
Consuming power, W
Current load of diode test, A
The voltage on the open contact probes of the
device, V
Operating temperature, C˚
Storage temperature, C˚
3
From 0 to +50
3. CONTROLFromDEVICES+10to+40
219×214×80
2
230
50
Single-phase
No more than 40
0,9
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User Manual - M0026 Tester
3. EQUIPMENT PACKAGE
The M0026 package includes:
-M0026 tester –1 pc.;
-power cable –1 pc.;
-diode fuse –(type: 5*20mm, current: 0.5A) –1pc.;
-cable with a probe –1 pc.,
-cable with a clamp –1 pc.,
-User Manual –1 pc.
Inspect M0026 tester. If any damage is detected, please contact the manufacturer or sales
representative before launching the equipment.
WARNING! In case of obvious damage, the operation of the device is forbidden.
4. TESTER DESCRIPTION
The device is supplied with a touch screen (“1” - Fig.1) which displays the tested parameters; the
color indication of the screen signals the technical condition of the tested diode. The tester has two
connection terminals (“2” - Fig.1) for diagnostic cables (Fig.2). Any connection configuration of
cables is allowable. The encoder knob (“3” – Fig.1) is used for fine adjustment of the device for
specific tasks. Button “4” turns the device on. Diode fuse and power connectors are located at the
rear of the device.
M0026
1234
Fig.1 M0026 tester. General view:
1 –Touch screen; 2 –Connection terminals for diagnostic cables;
3 –Encoder button; 4 –“ON” button.
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Fig.2. Diagnostic cables
1
2
Fig.3. M0026 tester. Back view:
1 –Diode fuse; 2 –Power connector.
5. OPERATION OF THE DEVICE
1.Use the device as intended.
2.The tester is intended for indoor use. When used outdoors, external conditions and technical
characteristics of the device set out in item 2 of this manual, should be taken into consideration.
3.To avoid failure or damage to the tester, do not make any changes to the electrical diagram of the
device on your own. In case of failure, please contact the manufacturer or sales representative.
4.Do not leave the device with closed probes for more than 2 minutes.
5.Working with a measuring probe, keep your fingers on the plastic part of it. Touching the metal
part of the measuring probe may cause measurement errors.
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6.The device is equipped with a system for diagnostics of the probes condition. If any fault is
detected, the "PROBE PROBLEM" message will appear on the screen. The "DIODE
BREAKDOWN" message that appears when the probes are open, signals the probe failure. Check
the connection of the probes and if the problem persists, contact the customer service.
5.1. Safety regulations
1.0nly the personnel that has received special training in safety operation and been authorized to
work with the test benches (devices) of certain types is allowed to use the device.
2.Make sure that measuring clamps do not have insulation damage or bare metal spots. Check the
clamps for any breaks. In case of obvious damage, replace them with the new ones before launching
the device.
5.2. Rectifier testing
Diagnostics of a rectifier should be performed as follows:
1.Turn the tester on. Connect the clamp to the rectifier housing. The following message will appear
on the screen: “CONNECT PROBE TO DIODE”.
2.Touch the contact spot of the tested diode with a probe. The following information will be
displayed:
“Vf” – diode voltage drop (in volts);
"Vr" - stabilizing voltage (in volts). If there are stabilitrons (avalanche diodes) in the rectifier structure,
the "AVALANCHE" message will appear.
WARNING! Different contaminants and dirt on the tested contacts may lead to
measurement errors.
AB
Fig.4. Taking measurements.
А) – incorrect; B) –correct
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2.1. If the diode is faultless, the screen will display “Vf” and “Vr”
values. The screen color will be green.
2.2. If the "Vf” value is higher than normal, the screen color will be
yellow.
The operability of the rectifier should be decided on the basis of the “Vf” readings and type (model)
of the diode (stabilitron). The “Vf” absolute value is not always a key parameter when checking the
rectifier. It is important to pay attention to the spread between the “Vf” values of different diodes of
the same rectifier. For example, for a rectifier that can carry 50 A, “Vf” = 0.850 V is quite typical. The
rectifier can be considered faultless If the spread between “Vf” values of the diodes doesn’t exceed
± 0.020 V. For the 120A rectifier, "Vf" = 0.850V is already a critical value. The diode with such a "Vf"
value shall be considered faulty.
2.3. If the diode is faulty, the screen color will be red.
2.4. In case of a short or open circuit failure, the screen color will be red and either the “SHORT
CIRCUIT’ or ‘DIODE BREAKDOWN’ message will be displayed correspondingly.
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5.3. Tester setup
The device assesses the diode performance on the basis of the forward voltage drop value (“Vf”)
and is specially calibrated to make it usable for any operator who doesn’t have sufficient knowledge
of the diode parameters and characteristics. Threshold values can be changed at the user’s option.
Enter the “Settings” menu as follows:
Fig.5. Color threshold setting menu.
1)Turn the device off.
2)Press and hold down the encoder button (“3” – Fig.1)
3)Turn the device on. A setup mode will be activated.
4)Threshold values for either a faultless diode (green color of the screen) or a faulty one (red color
of the screen) can be changed in this mode.
5)The selected threshold value can be changed by turning the encoder button clockwise or
counterclockwise.
6)To save the selected settings, press and hold down the encoder button until the device enters the
operating mode and the “CONNECT PROBE TO DIODE” message appears on the screen.
7)Turn the tester off to exit the setup menu. The settings won’t be saved.
6. TESTER MAINTENANCE
The test bench is designed for a long-continued full-time operation. However, to ensure uptime of
the test bench, it is necessary to provide regular technical inspection of the device and below
described routine maintenance as recommended:
The following main points should be checked in the course of a daily inspection:
•Whether the environment is permissible for the tester operation (temperature, humidity, air
pollution, vibration, etc.).
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•Whether the wires for connection to the tester terminals are in good condition (visual inspection).
•Whether the measuring probes are in healthy condition (visual inspection).
•Do not store or use the device in premises where there is a high temperature, humidity, danger of
explosion or fire, strong magnetic field. As a result of exposure to dampness, the tester performance
may deteriorate.
6.1. Cleaning and Care
Soft tissues or wipe cloths should be used to clean the surface of the device neutral detergents. The
display should be cleaned with a special fiber cloth and a screen cleaning spray. To prevent
corrosion, failure or damage to the tester, no abrasives or solvents should be used.
7. MAJOR FAULTS AND THEIR TROUBLESHOOTING
Problem
Possible cause
Troubleshooting
recommendations
1.1. The power connector came
1.1. Check the connection
1. Tester doesn’t turn on.
off.
reliability.
1.2. The fuse burnt out.
1.2. Replace the fuse.
2. “PROBE PROBLEM” message
2. Check the diagnostic probes
2. Replace the diagnostic
appears when the tester is on.
for damage.
probes.
3. “DIODE BREAKDOWN”
3. Check the reliability of the
3.1. Recover the contact.
message appears when the
3.2. Replace the diagnostic
connection of the probes.
probes are open.
probes.
4.1. Check the diagnostic
4.1. Recover the contact.
4. The tested parameters are
4.2. Clean the contact.
probes for damage.
displayed incorrectly.
4.2. Software error.
4.3. Contact the sales
representatives.
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Problem
Possible cause
Troubleshooting
recommendations
5.1. Check the diagnostic
5.1. Replace the diagnostic
5. The information is displayed
probes.
probes for damage.
only partially.
5.2. Software error.
5.2. Contact the sales
representative.
8. EQUIPMENT DISPOSAL
European WEEE Directive 2002/96/EC (Waste Electrical and Electronic Equipment Directive)
applies to M0026 disposal.
Obsolete electronic equipment and electric appliances including cables and hardware as well as
batteries and accumulators must be disposed of separately from the household rubbish.
Use available waste collection systems to dispose of outdated equipment.
Proper disposal of old appliances prevents harm to the environment and personal health.
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General Enquiries: [email protected]u
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