Power Drive Systems DUNLITE UVR100 User Manual

POWER DRIVE SYSTEMS
DUNLITE UVR100 AUTOMATIC VOLTAGE REGULATOR
10
UVR100 REGULATOR FAULT FINDING CHART
Instrument: Multimeter 20K Sensitivity. Ref:
Drg. No. 0212-J-03
Fault
Diagnose
High Voltage
300V AC
(Danger – run for periods of 1-2 mins. only to avoid
excess field current and disconnect all load)
1. Check correct transformer tap to suit alternator sensing for three
phase or single phase operation.
2.
Check all leads to regulator are secure.
3. Check D1, D2 terminals are bridged or connected to correct
burden resistor-as for parallel operation.
4.
Check printed circuit board for fractured track or loose component.
5. Check transformer secondary voltage at Bl 32 volts AC plus or
minus 2 volts.
6. Check DC output voltage across Cl
39 volts DC plus or minus 1 volt.
7.
Check transistor TR2 for open circuit.
8.
Check D5 for short circuit.
Fault
Diagnose
Low Voltage
50V AC
1.
Check correct transformer tap to suit alternator sensing for three
phase or single phase operation.
2.
Check all leads to regulator are secure.
3. Check PP terminals are bridged or connected to correct 5K
external potentiometer.
4.
Check printed circuit board for fractured track or loose component.
5.
Check for short circuit flywheel diode 04 across F+ F-.
6.
Check for short circuit or open circuit main thyristor D5.
7. Check residual voltage and repolarise if necessary as per
"repolarisation" procedure.
(Note: Residual ranges from 10-50V AC approx.)
8.
Check transistor TR2 for short circuit.
9.
Check SCOOP operation.
Fault
Diagnose
Continually losing
voltage output.
1. Check all leads are secure.
2. Check SCOOP setting as per SCOOP adjustment procedure.
3. Ensure that alternator is not overloaded.
4. Check that engine speed is constant.
Fault
Diagnose
Unstable voltage.
1.
Check all leads are secure.
2. Check stability potentiometer as per stability adjustment
procedure.
3.
Check transistor TR1 for open or short circuit.
4.
Check diode D1 for open or short circuit.
5.
Check printed circuit board for fractured track or loose component.
Note:
If unable to find fault, return to Dunlite for repairs, with brief history of type of failure.
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Power Drive Systems DUNLITE UVR100 Specifications

General

Brand	Power Drive Systems
Model	DUNLITE UVR100
Category	Controller
Language	English