MSG MS012 COM, Operation Manual

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English
Operation manual
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3.3.4 Diagnostics of 12/24V voltage regulators of COM type
1. Connect the voltage regulator to the tester as described in article 3.2 of the actual Instruction.
2. In the main menu (Fig.4) select the nominal voltage of the tested voltage regulator: 12V or 24V.
3. In the menu for selection of the voltage regulator by type (Fig.6, 7) select the voltage regulator
terminal and press TEST. The tester will enter the test mode.
4. Wait for the tester to complete the data read-out. The diagnostic procedure can be continued
when message “CONNECTED” appears in box “LIN STATUS”.
5. Rotate adjustment knob “EL LOAD” to set the load at 100%. Set stator speed “STATOR RPM”
below 700 rpm with adjustment knob “STATOR”. Value “MEC” in box “ERRORS” must turn red.
When we increase the stator speed “STATOR RPM” up to more than 1200 rpm, this value “MEC”
in box “ERRORS” must turn white. This will mean the system of voltage regulator self-diagnostics
is fault-free.
5.1 If symbol EL in box “ERRORS” turns red when we increase the stator speed “STATOR RPM” up
to more 1200 rpm, it signals an electric fault of the voltage regulator.
6. Turn adjustment knob “STATOR” until “STATOR RPM” value is set in the range of 2000 to
6000 rpm. Set the voltage value “SET V” in the range of 13.1-14.5V for 12V regulators, 26 – 29V for
24V by rotating adjustment knob “VOLTAGE”. The value in box “VOLTAGE, V” must change in
proportion to the pre-set one. If so, the channel for setting voltage is operable.
7. Rotate adjustment knob “EL LOAD” to change the value in the range from 10 to 100%. If the
value in box “EXCITATION” changes, it means that the voltage regulator responds to the load
change.
8. Failure to perform as described in articles 4-7 of the Instruction signals the voltage regulator
malfunction.
9. Press BACK to exit the test mode. Disconnect the clips from the voltage regulator.