Section 1.3

OPERATIONAL ANALYSIS

GENERAL

Figure 1, below, is a block diagram of the Impact Plus computer controlled RV generator. The diagram is Intended only for the purpose of illustrating generator operation. Refer to the actual wiring diagram for wiring interconnections.

OPERATIONAL DESCRIPTION

1.The Impact Plus is a computer controlled generator that uses an inverter to create a superior sine wave and maintain a steady frequency of 60 Hz. The PERMANENT MAGNET ROTOR is directly coupled to the ENGINE and rotates at the same speed as the engine.

2.As the ROTOR turns, its magnetic field cuts across a number of STATOR windings, to induce a voltage into those windings. A voltage is induced into the following STATOR windings:

a.Phase 1 and 2 of the STATOR POWER WIND- INGS (output leads AC1-AC2 and SL1-SL2).

b. The STATOR POWER SUPPLY WINDING with output leads PS1-PS2.

c. The STATOR TIMING WINDING (output leads TIM1-TIM2).

d. STATOR BATTERY CHARGE WINDING with output leads 55, 66 and 77.

3.STATOR BATTERY CHARGE WINDING output is delivered to the unit battery via a BATTERY CHARGE RECTIFIER (BCR) and a 1 OHM, 50 WATT RESISTOR. The circuit is completed through the battery to frame ground and back to the BATTERY CHARGE WINDING via Wire 55.

4.Stator timing winding output is delivered to the A6060 circuit board. The timing winding output is used to determine engine rpm.

5.The stator power supply winding output is delivered to the inverter. This is the power supply for operation of the inverter.

6.Stator power winding output (phase 1 and 2) is delivered to two separate bridge rectifiers, where it is rectified to DC. This becomes the DC link voltage and is delivered to the inverter.

Figure 1. Block Diagram- A Generator System

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Generac Power Systems 941-2, 940-2 service manual General, Operational Description

941-2, 940-2 specifications

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