WIPER GP-WINDSHIELD 4E2600 - Caterpillar

set at the factory. When first used with no load, make sure that the drive speed is correct and stable. Check information from the nameplate. After operational testing, replace all access panels or cover.The only possible adjustment to the machine should be made on the AVR.
Note: Before any intervention on the AVR, make sure that the ST9 jumper is closed with AREP excitation and disconnected with PMG or shunt or separate excitation.
Table 3
Action Factory Setting Pot
Voltage minimum fully anti-clockwise 400V - 50 Hz (Input 0 - 380 V) - P2 +
Stability Not set (center position) - P3 +
Voltage quadrature droop (// operation with C.T.) - 0 quadrature loop fully anti-clockwise. Not set (fully anticlockwise) - P1 +
Excitation ceiling Limit of excitation and short-circuit current, minimum fully anti-clockwise. 10 A maximum - P5 +
Initial potentiometer settings, refer to table 3. Remote voltage adjustment potentiometer : center (ST4 jumper removed). Note: Stability adjustments in standalone operation
Install a D.C. analogue voltmeter (needle dial). 50V on terminals E+, E-. Also, an A.C. voltmeter 300V - 500V or 1000V on the alternator output terminals.
Make sure that the ST3 jumper is positioned on the desired frequency (50 Hz or 60 Hz).
Voltage potentiometer P2 at minimum, fully anti-clockwise.
Stability potentiometer P3 to around 1/3 of the anti-clockwise limit.
Start the engine and set the speed to a frequency of 48 Hz for 50 Hz, or 58 for 60 Hz.
Set the output voltage to the desired value using P2. - Rated voltage UN for solo operation (for example 400 V). Or UN + 2 to 4 percent for parallel operation with C.T. (for example 410 V). If the voltage oscillates, use P3 to make adjustments (try both directions) observing the voltage between E+ and E- (approximately 10V D.C.). The best response times are obtained at the limit of the instability. If no stable position can be obtained, try disconnecting or replacing the ST2 jumper (normal/fast).
Check LAM operation, ST5 closed.
Vary the frequency (speed) around 48 Hz or 58 Hz according to the operating frequency. Check the change in voltage from that observed previously approximately (15 percent). Note: Before any intervention on the alternator, make sure that the speed droop is identical for all engines.
Readjust the speed of the unit to the rated no-load value. Adjustments in parallel operation
Preset for parallel operation (with C.T. connected to S1, S2) - Potentiometer P1 (quadrature droop) in center position. Apply the rated load (cos angle = 0.8 inductive). The voltage should drop by 2 to 3 percent. If the voltage increases, check that V and W and also S1 and S2 have not been reversed.
Apply the available load (the setting is only correct if a reactive load is available).
By altering the speed, match the kW (or divide the rated power of the units proportionally).
By altering the quadrature droop potentiometer P1, match, or divide the currents. Adjustment for Maximum Excitation
Illustration 9 g00952800The maximum level of excitation may be reduced by a static method. The static method is safer for the generator and the network. Use