3885147 Volvo.Penta Bracket

Wiring Diagrams
Many types of electrical systems are available for these engines. Some charging systems use an alternator and a regulator in the wiring circuit. Others have the regulator inside the alternator.A fuel or oil pressure switch is used in all systems with an external regulator. The switch prevents current discharge (field excitation) to alternator from the battery when the engine is not in operation. In the systems where the regulator is part of the alternator, the transistor circuit prevents current discharge to the alternator and the fuel or oil pressure switch is not required.All wiring schematics are usable with 12, 24, 30 or 32 volts unless the title gives a specific description. Wire and cable shown dotted on wiring diagrams is to be supplied by customer. The charts that follow gives the correct wire sizes and color codes. The abbreviations given below are used with the wiring diagrams in this section.The present type of wire identification, used on all Caterpillar equipment uses only eleven solid colors. In addition to only eleven basic colors of wire, a circuit number is stamped (put) on each wire. The circuit number is stamped approximately every inch for the length of the wire. The identification number for a circuit will be the same for any Caterpillar equipment.For example: A color code of "A701-GY" on the schematic would mean, there is a gray wire with the circuit number "A701" stamped on it. This wire is the solenoid signal wire (power) for cylinder #1 (CYLINDER HEAD SOL 1) on the Electronic Unit Injector (EUI) system wire harness. The "A701-GY" color code will be the identification of "SOLENOID 1 POWER" circuit on all Caterpillar equipment wire harnesses with Electronic Unit Injector (EUI) systems.Another wire identification on the schematic is the size of the wire. The size or gauge of the wire is called "AWG". The gauge of the wire will follow the wire color.For example: A color code of "150-OR-14" on the schematic would indicate the "150-OR" wire is a 14 AWG wire.If the gauge of wire is not listed after the wire color, the gauge of the wire will be 16 AWG. Grounded Electrical Systems
These systems are used in applications when it is not necessary to prevent radio distortion and/or chemical changes (electrolysis) of grounded componentsRegulator Inside Alternator
Charging System
(1) Ammeter. (2) Alternator. (3) Battery.
Charging System with Electric Starting Motor
(1) Start switch. (2) Ammeter. (3) Alternator. (4) Battery. (5) Starting motor.Regulator Separate From Alternator
Charging System
(1) Ammeter. (2) Regulator. (3) Pressure switch (N/O). (4) Resistor (used with 30 and 32V systems). (5) Battery. (6) Alternator.
Charging System with Electric Starting Motor
(1) Start switch. (2) Ammeter. (3) Regulator. (4) Resistor (for 30 and 32V systems). (5) Battery. (6) Starting motor. (7) Pressure switch (N/O). (8) Alternator.Alternator-Off Engine
The following diagrams are for use only when an alternator or charging generator is not used in the engine electrical system.
System with One Starting Motor
(1) Start switch. (2) Starting motor. (3) Battery.Insulated Electrical Systems
These systems are most often used in applications where radio interference is not desired or where conditions are such that grounded components will have corrosion from chemical change (electrolysis).Regulator Inside Alternator
Charging System
(1) Ammeter. (2) Alternator. (3) Battery.
Charging System with Electric Starting Motor
(1) Start switch. (2) Ammeter. (3) Alternator. (4) Battery. (5) Starting motor.Regulator Separate From Alternator
Charging System
(1) Ammeter. (2) Regulator. (3) Pressure switch (N/O). (4) Resistor (used with 30V and 32V systems). (5) Battery. (6) Alternator.
Charging System with Electric Starting Motor
(1) Start switch. (2) Ammeter. (3) Regulator. (4) Resistor (for 30 and 32V systems). (5) Battery. (6) Starting motor. (7) Pressure switch (N/O). (8) Alternator.Alternator-Off Engine
The following diagrams are for use only when an alternator or charging generator is not used in the engine electrical system.
System with One Starting Motor
(1) Start switch. (2) Starting motor. (3) Battery.Electric Tachometer Wiring
(1) Magnetic pickup. (2) Terminal Connections - terminals 18 and 19 on load sharing governor control and terminals 7 and 8 on standby governor control. (3) Tachometer. (4) Ground connection - governor control chassis ground. (5) Governor control terminal strip. (6) Wiring connections - for second tachometer circuit if needed. (7) All wire must be 22AWG shielded cable or larger. (8) Dual speed switch terminal strip. (9) Ground connection - ground to engine.Automatic Start/Stop System - Non-Package Generator Sets
Automatic Start/Stop System Schematic (Hydraulic Governor)
(1) Starting motor and solenoid. (2) Shutoff solenoid. (3) Fuel pressure switch. (4) Water temperature switch. (5) Oil pressure switch. (6) Overspeed contactor. (7) Battery. (8) Low lubricating oil pressure light (OPL). (9) Overcrank light (CL). (10) Overspeed light (OSL). (11) High water temperature light (WTL). (12) Automatic control switch (ACS).
Automatic Start/Stop System Schematic (2301A Control System)
(1) Magnetic pickup. (2) Starting motor and solenoid. (4) Oil pressure switch 1 (OPS1). (5) Water temperature switch. (7) Overspeed switch. (8) Battery. (9) Low lubricating oil pressure light (OPL). (10) Overcrank light (OCL). (11) Overspeed light (OSL). (12) High water temperature light (WTL). (13) Automatic control switch (ACS). (14) EG-3P Actuator. (15) 2301A Control Box. (16) Oil pressure switch 2 (OPS2).An automatic start/stop system is used when a standby electric set has to give power to a system if the normal (commercial) power supply has a failure. There are three main sections in the system. They are: the automatic transfer switch, the start/stop control panel (part of switch gear) and the electric set.Automatic Transfer Switch
Automatic Transfer Switch (ATS)
(1) E1, E2, and E3 input to ATS from emergency source. (2) N1, N2 and N3 input to ATS from normal source. (3) T1, T2 and T3 output from ATS to the load. (4) Transfer mechanism.The automatic transfer switch normally connects the 3-phase normal (commercial) power supply to the load. When the commercial power supply has a failure the switch will transfer the load to the standby electric set. The transfer switch will not transfer the load from commercial to emergency power until the emergency power gets to the rate voltage and frequency. The reason for this is, the solenoid that causes the transfer of power operates on the voltage from the standby electric