Generac Power Systems 941-2 2 A6060 CIRCUIT BOARD, Circuit Board Connections, A6060 Circuit Board

Section 6.2 A6060 CIRCUIT BOARD

GENERAL

The A6060 circuit board controls all phases of engine operation including cranking, starting, running and shutdown.

The circuit board interconnects with other compo- nents of the engine electrical system.

The board Is powered by fused 12 VDC battery out- put, available to the board via Wire 15.

Figure 1. A6060 Circuit Board

CIRCUIT BOARD CONNECTIONS

RECEPTACLE J1:

The A6060 circuit board mounts an 8-pin receptacle J1. An 8-pin connector plug connects to the A6060. This harness then connects to a 9-pin connector plug on the outside panel of the control box. This becomes the 9-wire harness that connects to the inverter. Signals from the A6060 circuit board control the func- tions of the inverter.

RECEPTACLE J2:

The A6060 circuit board mounts a 10-pin receptacle J2. A 10-pin connector plug connects to this recepta- cle to interconnect the board with other components and circuits.

This 10-pin receptacle is shown in Figure 2, along with a chart that Identifies each pin, wire and function.

Wire 14 connects to Terminal J2-9. This terminal and wire are electrically hot (12 volts DC) only when the engine is cranking or running. Battery voltage is deliv- ered to Terminal J2-9 when circuit board action ener- gizes a board-mounted run relay while cranking or running.

Wire 14 DC output is delivered to (a) the engine fuel pump and (b) the engine ignition system. If an option- al remote panel Is used, Wire 14 DC output will turn on a "RUN" lamp on that panel.

Wire 15 connects to Terminal J2-5. This Is fused bat- tery voltage. The Wire 15 circuit is electrically hot at all times (provided the unit battery Is connected).

		Figure 2. Receptacle J2
PIN	WIRE	FUNCTION
1	—	Not Used
2	18
3	85	When grounded by Low Oil Pressure or High
		Oil Temperature Switch, the circuit board will
		shut down the engine
4	17	When Wire 17 is connected to ground by
		holding Start-Run Stop Switch at START,
		cranking will occur.
5	15	Fused battery voltage. The Wire 15 circuit is
		electrically hot at all times (provided the unit
		battery is connected).
6	0	Common frame ground.
7	90	Delivers 12 VDC to automatic choke solenoid
		coil while cranking only.
8	56	Delivers 12 VDC to starter contactor while
		cranking only.
9	14	Delivers 12 VDC (during cranking and run
		ning) to (a) Engine Fuel System, (b) Engine
		Ignition System and (c) Remote Panel Lamp
		if so equipped.
10	—	Not Used

NOTE 1: - See "SHUTDOWN FEATURES” In Section 6.5 (Page 6.5-1).

RECEPTACLE J3:

The A6060 circuit board mounts a 6-pin receptacle J3. A 6-pin connector plug connects to the A6060. This harness then connects to Stepper Motor. Signals from the A6060 circuit board control the Stepper Motor operation. Refer to page 3.6-1 for test proce- dures.

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