Motoplat VC-014DS User manual

USER
MANUAL
www.motoplat.nl
VC-014DS
The Motoplat VC-014DS parts tester combines two devices:
a stator winding tester and a rectifier tester.
Once the stator is connected, the VC-014DS only take a few
seconds to identify the phase connections and then checks
the windings for any short circuits or connection failures.
The rectifier test includes checking the circuit connections
and measuring their operability.
All the above mentioned data and results will appear on a
LCD touch screen.
This small and light weighted tester was developed
according to the requirements of service stations and works
without any additional testing or measuring devises.
Stator and Rectifier Tester
ENGLISH
VERSION 2017

IMPORTANT INFORMATION
Safety Warning
Electrical devices should be installed and operated in such a way that all applicable safety requirements
are met. It is your responsibility as an installer to ensure that you idenfy the relevant safety standards and
comply with them. Failure to do so may result in damage to equipment and personal injury. In parcular,
you should study the contents of this guide carefully before installing or operang the equipment.
People who start using this product should review carefully this instrucon manual, or have had a training
from a qualied person.
The use of electrical equipment is enrely at your own risk and Motoplat® is under no circumstances
responsible for any incidental, consequenal or special damages of any kind whatsoever, including but not
limited to lost prots arising from or in any way connected with the use of the automated test equipment
or this manual.
The tester should be connected to a properly grounded outlet.
If the power cable is damaged, you must have it be replaced by the supplier or by another qualied person
in order to avoid dangerous situaons.
- Motoplat® -
Environment
The tester should be installed in an weather protected area where heat, humidity or any other climate
situaon can not damage the tester.
The tester should be installed on a level surface that is clear of debris and obstrucons.
Motoplat ®
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1 General Informaon
1.0 General informaon about the Motoplat VC-014DS tester 4
2 Specicaons and Installaon
2.0 Technical specicaons 5
2.1 Back panel 6
2.2 Front panel 6
3 Alternator Stator Test
3.0 General informaon 7
3.1 Common failures 9
3.2 Scan 10
3.3 Test 11
4 Alternator Recer Test
4.0 General informaon 13
4.1 Common failures 13
4.3 Test 14
Index
5 Support
5.0 Contact informaon 17
Motoplat ®
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Secon 1 – General informaon
1.0 General informaon about Motoplat VC-014DS tester:
The Motoplat VC-014DS parts tester combines two devices:
a stator winding tester and a recer tester.
Once the stator is connected, the VC-014DS only take a view seconds to idenfy the phase connecons and
then checks the windings for any short circuits or connecon failures.
The recer test includes checking the circuit connecons and measuring their operability.
All the above menoned data and results will appear on a LCD touch screen.
This small and light weighted tester was developed according to the requirements of service staons and
works without any addional tesng or measuring devises.
Motoplat ®
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Secon 2 – Specicaons and Installaon
2.0 Technical specicaons:
General
Supply voltage (V) 100-250
Supply frequency (Hz) 50/60
Supply type Single-phase
Maximum consuming power (W) 40
Dimensions (MM) 219*214*80
Weight (KG) 3
Stator winding test
Voltage (V) 12/24
Types ‘Star’, ‘delta’
Detected failures - Inter-turn fault
- Inter-phase fault
- Phases to alternator body
- Open-phase fault
Error of measurement (%) 1-3
Tesng of short circuit to the body (kohm) 12
Pulse current (A) 20
Diode bridge test
Voltage (V) 12/24
Current (A) 30 (Pulse current)
Detected failures - Breakdown
- Open circuit
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2.2 Front panel:
No. Descripon
1Connecon ports (6)
2LCD touch screen
3Power buon
4Connecon port test pen
No. Descripon
1Cable connecon
2Fuse (2A)
2.1 Back panel:
Plug the supplied power cable into the 12V
socket of the tester (1).
Check if the fuse is ghtened proparly.
If the fuse need to be replaced, turn it
counter clock wise to remove it from the
tester.
Plug the supplied test leads into the
connecon ports of the tester (1).
Please note that the number of test leads
should be equal to the number of phases.
Unnecessary connecon of addional test
cables may interfere with the test.
Plug the supplied test pen into the
connecon port on the right side of the
tester (4).
To start the tester, press the power buon.
Motoplat ®
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3.0 General informaon:
A stator is a xed element of an alternator that
consists of a magnecally conducve core with circular
mounted coil windings. By rotang the stator, the
rotor generates alternang current. The frequency
of generated alternang current equals the rotor
frequency, mulplied by the number of poles (usually
6).
Descripon of an alternator stator winding
1Winding terminals, phases: А, В, С;
2Stator winding
3Magnecally conducve core
Secon 3 – Alternator Stator Test
A three-phase stator winding consists of three
separate windings that are coiled in a certain order
on the magnec core. The phases in the windings are
displaced by one third (120 degrees) of a period of 360
degrees.
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Phase windings can be connected in a ‘delta’ or ‘star’ diagram. The windings are placed into a frame of steel
slots (stator core) to conduct magnec current from the rotor to the stator windings directly and to reduce
area dispersion of the magnec eld. The magnec eld is created in the coils and stator core.
Several types of stator windings are presented below:
Windings with a delta connecon Windings with a star connecon
Windings with a star connecon and center point Windings with a star and delta connecon with
jumpers in the alternator diode bridge
Motoplat ®
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3.1 Common failures:
Inter-turn fault (single-phase short circuit):
A. Alternator overload – When the alternator current exceeds the limit, the stator windings can be
overheated and this can cause damage to the winding insulaon.
B. Short circuit due to mechanical damage of the stator.
C. Manufacturing defect, mostly due to incorrect applying of the windings.
D. Incorrect use and storage of an alternator may cause moisture ingress into the unit, which may
lead to inter-turn fault as well.
Inter-phase fault (short circuit between phases):
Inter-phase faults may be caused by the same reasons as inter-turn faults.
Open fault of one or several windings:
Mechanical damage and/or corrosion caused by moisture, may be the reason for breakage of the
windings.
Phase to magnec core fault:
Phase to magnec core faults may be caused by the same reasons as inter-turn faults.
Motoplat ®
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3.2 Scan:
Start the tester by pressing the power buon and
select ‘STATOR’
Connect the test leads with the alligator clips to the
phases of the stator. It doesn’t maer which phase
is connected to which connecon port, as the tester
detects the connected windings automacally.
Press on ‘Scan’ at the right side of the screen.
The tester starts to detect the number of connected
windings.
In the example on the right, the connecon ports 1,
4 and 5 were used.
In case the stator has 6 outputs (star or delta
connecons, commutang to the alternator diode
bridge), connect 6 cables and press Scan. The tester
detects the number of connected windings which
will be displayed on the screen as the example on
the right:
When the phases are too close to each other, the
tester will show the following nocaon: “Too
many connecons”.
This means the phases are not connected the right
way or that the windings contains breakage.
(Please always check if the test leads are connected
the right way (1 test lead per phase) and if the
alligator clips don’t touch each other).
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3.3 Test:
Aer the connecons are detected, you can start the
stator test.
Place the test pen againt the stator core.
Press on ‘Test’ at the right side of the screen.
Measured values
Pins Detected connecons
Q. units Winding inductance (displayed in nominal units)
Di., units Dierence in percentage between the measured values of winding inductance. The stator is
considered to be faultless if the dierence between the measured values do not exceed 10
percent (%)
Isol., Kohm Insulaon resistance. The value is indicated in kilo ohm. The nocaon ‘norm’ appears on
the display when the winding is faultless. The nocaon ‘short’ appears on the display in
case of a short circuit.
Passed (Example)
Faultless stator winding. 1% dierence between
the phases which corresponds to the acceptable
limits (10%).
Press on ‘Test’ at the right side of the screen.
Motoplat ®
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When tesng a stator with a ‘star’ connecon, 4 test
cables must be connected: 3 to the phases at the
outside of the stator and 1 to the center point.
The connecons will be displayed as on the example
on the right.
To scan the values between the phases, you simply
remove the connecon cable from the center point.
Rejected (Example)
In the example on the right, the connecons
between phases 2-5 and 5-6 are lost.
Rejected (Example)
The dierence between measured values of
windings exceeds 10%.
Rejected (Example)
The nocaon ‘short’ appears on the display and
the tester makes a repeang sound.
There is a 1% dierence between the phases which
corresponds to the acceptable limit of 10%. This
means the winding insulaon of phases 5-6 is
broken and causes short circuited.
Motoplat ®
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Secon 4 – Alternator Recer Test
4.0 General informaon:
A recer block on three parallel half-bridges with
six semiconductor diodes, converts three-phase
alternang current of the stator into direct current at
the output of the alternator.
A common diagram of recer on three parallel half-
bridges are shown on the right
Because of increasing electrical consumpon in
modern cars, alternators are opmized for high
current up to 350A. The phase voltage on a delta
stator in open state on the diode is about 0.7-1.0 V,
which causes a large amount of heat. For cooling the
recer bridge, heat sinks are used.
As much as any other car parts, alternators are
exposed to contaminaon, overheang and
overcooling. Alternator diodes are water-proof and
protected from all substances.
1. alternator diodes
2. posive heat sink
3. negave heat sink
Recers can be divided into 2 types:
I) diodes pressed (somemes soldered) into recer heat sink plates;
II) diodes soldered on heat sinks with ribbed surface.
To avoid a short circuit of aluminum heat sinks, plates are fully or parally covered with a layer of insulang
material.
Stator winding terminals are welded, soldered or xed with screw connecons to specialized mounng
faces of the alternator recer.
4.1 Common failures:
The most common failures of the recer are:
• Short circuit of one or several diodes
• Open circuit of one or several diodes, caused by mechanical damage or prolonged exposure to
corrosion
• Short circuit of the posive and negave heat sinks, caused by foreign objects or contaminaon.
Motoplat ®
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4.2 Test
The VC-014DS tests the 2 way conducon of recers, connected through measuring cables. The tests are
conducted by current pulsaons.
Increased resistance (semiconductor degeneracy) or non-conducng diode(s) are indicated as open circuit
on the display. If possible, the tester restores the recer connecons В+, В- and connecon terminals of
the stator windings upon nishing the measurement. Somemes a recer has a large amount of short-
circuited diodes and diodes with open circuit, which will not idenfy its connecons.
In such cases, it is recommended to use addional informaon on the display (amount of short circuited
diodes and diodes with open circuit).
Display descripon:
Connecon: recer connecon display
Free: disconnected measuring cables
Open Circuit: recer diodes with open circuit
Short Circuit: recer diodes with short circuit
Test: buon to start the test
Back: buon to stop the test and
return to the main menu.
Start the tester by pressing the power buon and
select ‘DIODE BRIDGE’
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Connect all recer diodes to the tester through the required number of cables. There is no need to
observe polarity and order: the tester detects connecons automacally.
Disconnected cables must be isolated from each other.
Press the test buon.
The VC-014DS tests the connected recer and shows the results on the screen.
Passed (Example)
The test results of a well-funconing three-armed
recer are shown on the right.
The measuring cables 1, 2, 3, 5 and 6 are connected,
cable 4 is disconnected.
Passed (Example)
The test results of a well-funconing three-armed
recer are shown on the right.
In comparison with the previous gure, the order of
connected measuring cables were changed.
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Rejected: Open Circuit (Example)
The test results of a rejected three-armed recer
are shown on the right.
The diodes with an open ‘B-’ circuit are shown in the
eld ‘open circuit’.
Rejected: Open Circuit (Example)
The test results of a rejected three-armed recer
are shown on the right.
The diodes with an open ‘one element’ circuit are
shown in the eld ‘open circuit’.
Rejected: Short Circuit (Example)
The test results of a rejected three-armed recer
are shown on the right.
The diodes with an short circuit are shown in the
eld ‘open circuit’.
Rejected: Open Circuit (Example)
The test results of a rejected three-armed recer
are shown on the right.
The diodes with an open ‘B+’ circuit are shown in the
eld ‘open circuit’.
Motoplat ®
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www.motoplat.nl
Stichtse Kade 47c
1244NV ‘s-Graveland, The Netherlands
+ 31 (0)35 656 3180
[email protected]
www.motoplat.nl
MOTOPLAT CV
Contact Information