Westerbeke 9.0 BCG Technical Manual page 215

4. Integral Controller (I.C.)
The integral controller is an encapsulated solid state unit that supplies a DC charging voltage to the gen-
erator's starting battery while the generator is operating.
Charging Voltage: 13.0 - 14.0 Volts DC
Charging Amperage: 0 - 10 Amps DC
A separate group of stator windings supplies AC voltage to a bridge rectifier that converts the AC current to
DC current to supply the integral controller unit. The integral controller unit senses the starting battery's
needs and supplies a DC charge as needed. If the integral controller is believed to be faulty, resulting in a
low starting battery, check the charging circuit components (0) and all connections in the circuit and to the
battery for cleanliness and for tightness including the ground before replacing the integral controller unit.
NOTE: When first started, the integral controller unit will produce a low charging rate. This
charging rate will rise as the unit is operated.
New four wire controllers eliminate the ballast resistor circuit since the ballast resistor's function is now
handled internally. When replacing an early style controller with the newer four wire model, remove the
ballast resistor and its wiring.
White/Green
(-) Negative
Terminal of Rectifier
White/Red
D.C. Charge
WhitelY ellow
( +) Positive
Terminal of Rectifier
NOTE: White/Green (-) negative
and White/Black ground are
Interchangeable.
Four Wire Controller Showing its Connections
209
Westerbeke Generators