Subaru Robin Power Products R1200 service manual Voltage Regulation Under Load

Page 16

5-2 DESCRIPTION OF GENERATING OPERATION

I------- = ,

8 I

P I ‘3 ‘6

x I

L ---w_J

Magneto

F@. 5-2- I

5-2-l GENERATION OF NON-LOAD VOLTAGE

When the generator starts turning, the permanent magneto incorporated in the flywheel in the engine side starts rotating, which generates voltage in the exciting coil. The voltage, rectified by the diodes in the AVR, causes the flow of the current @through the field coil wound around the rotor in the generator. The rotor is then turned to an electromagnet by the current and at the same time when it starts rotating, voltage is generated in the coils (main coil, sub-coil, and DC coil) of the stator. -Then,the voltage generated in the sub-coil is rectified by the AVR, and the current @ flows so that current in the field coil is increased. This increases magnetic intensity to the rotor. Rated voltage is generated in the main coil and the DC coil by repeating this operation.

5-2-2 VOLTAGE REGULATION UNDER LOAD

When a load is connected to an AC receptacle and current is increased, output voltage fluc- tuates and the voltage fluctuations in the case where an AVR is in the circuit and in the case where no AVR is in the circuit differ as shown in Fig. 5-2-2. The AVR operates as follows.

When AC output is taken out, load is put on the engine. The AC voltage becomes lower because rpm of the engine becomes fewer and the voltage decreases on account of inner resistance of the coil. The AVR detects the voltage decrease and automatically increases the current flowing through the field coil with a thyrister inside the AVR. As a result, magnetic intensity to the rotor is increased while the decreased voltage is raised again by taking out loaded current, which in turn main- tains the output voltage at a constant level. When the AC output becomes lower the thyris-

ter provides reverse operation, and in this case, the voltage is also maintained at a

constant level.

Rated Level

Current (A)

F& 5-2-2

-12-

Image 16

Contents Rozh -J &ii Foreword Contents Assembly Specifications ItemsPower Factor AC OutputOutput Max Rated 800 W Frequency 50 Hz Voltage 110 Output MaxFrequency 60 Hz Voltage 12ov DC Output Under no load is approximately from 18V up toFeatures Component Identification CHOKE-RUN-STOPFunction of Each Component L-5 4CONNECTING ROD and Piston Main Bearing CoverCrankshaft CamshaftAIR Cleaner Carburetor‘CC Description of Main OperationsVoltage Regulation Under Load Fis Output Waveform Current @ Curr&t @ Operational Limits of the Generator Load Electric Battery Capacity Wire Length Measuring Procedures II ’ Mj 1 mIPage To Measure Insulation Resist Control Panel Functional Check of Each Component L aOne section, replace with Assy 83 AVR Windings, or peripheral temperature Resistance Cleaning of Slip RingValue El 10.7J-z At rated rpm Exciting coilDisassembly and Assembly Precautions Tools DriverPrecautions Nection Description SequenceI Part to remove j IFront cover Description I2 Remove the front coverBy unscrewing three M5 x 8 screwsDescription Precautions Part to Sequencej remOveBe careful not to Damage the fuel PipeLpanner Part to Sequence, removeSpanner Remove $Ez End cover Description Precautions @ Driver Remove the connector Assembling, beThat 1wiring Part toRemOve ’Rear ‘bracket Description See Fig. g-3-10Pull away the stator cover SequenceI Rpearfito~~ Description’ plastic hammer Siw‘ Part to / Sequencej remove ’ JFront Ibracket Description Necessary Precautions13 m/m box Spanner RemOve DescriptionPrecautions Necessary Tools Blower i 1 1housing I10 m/m box spannerNecessary Precautions . tools @ Driver Precautions Bolt has only to be loosened One M6 x 12 boltBrace nuts 112m/m box ’spanner 10 m/m box jspanner ’Governor Remove the governor lever j Lever26 i &cocci*n Remove the starting pullyIgnition coil from Crank case by takingPull out the intake valve and the exhaust valve Notch Spanner 1spring retainer’sFront and hook ’ the minus driver RetainerCamshaft Description ISequenceI Part toCrankcase Tappets to distin Guish them from one Be careful not to open the joint too wide, or it will break Remove the crankshaft Be careful not toAssembly Procedure WTolerances of new installed parts Connecting rod is joined to the piston with the piston pin Piston and Piston RingConnecting ROD Tappets and CamshaftIntake Valve and Exhaust Valve WV&e h valve guide clearance =53Tappet Adjustment Breather Plate and Tappet Cover Cylinder HeadIgnition COIL, Exciting COIL, Flywheel and Starting Pulley Ignition PlugGovernor Lever Speed Control Nut Muffler and Muffler CoverHead Cover and Blower Housing 1’7 Recoil StartorFront Bracket Rear Bracket and Stator Brash Holder Bracket Cover Page Fuel Pipe Connection Front Cover and Element CoverConnection of Coupler and Plug Secure the side cover with four M 5 x 8 screws Carburetor Schematic Diagram of the Fuel System By-Pass Choke Disassembly and Assembly of Carburetor 184 Safety Precautions Troubleshooting Starting failur Cock is closed Pzlzq L1Ill IISymptoms AIgnition coil ’ \ r?J Hanging posi- tion is not normal Abration 7Symptoms 0Governor system III Seat Case Case there Abnormal Operation Is too much Pour Lubri Been changed Replace Periodically 1Symptoms Voltemeter Stator sub-coil Symptoms LNo DC voltage is output Voltag,eistoo high QParts LSymptoms Symptoms Voltage Is abnormally low Parts For Adjustment Criteria TableUel con Limit Items Adjustment Criteira Description Tools Wiring Diagram LT-TwMaintenance Checks and Maintenance for Every 200 Hours Every Month Page Page Issue EMD-GS0095

Related manuals

Manual 18 pages 8.99 Kb