Delphi CS-144 (KG9)

The CS-144 generator uses the following components:
^ An internal, temperature compensated voltage regulator with built-in fault detection
^ A delta stator
^ A rectifier bridge
^ A rotor with slip rings and brushes
^ A conventional pulley
^ An external fan is used for cooling the internal components.

The voltage regulator incorporates a Load Response Control (LRC) to ramp-up to additional loads and reduce fluctuations in the output voltage. These generators use three wiring connections, in addition to the ground path through the generator bracket:
^ The output BAT terminal connection
^ The L terminal connection
^ The S terminal connection

The output BAT terminal connection is connected directly to B+ voltage and is hot at all times. It is through this terminal that the generator provides voltage and current to charge the battery and operate the vehicle electrical components. This connection is necessary at start-up because it provides initial field current from the battery to begin generator operation. The L terminal is connected to the charge indicator circuit which is grounded through the voltage regulator whenever the generator is stopped or the charging voltage is too high or too low. When the charge indicator circuit is grounded, the charge indicator in the instrument cluster will light when the ignition switch is in the RUN position. At start-up the ignition switch voltage in the charge indicator circuit at the L terminal causes the voltage regulator to turn the field current on. When the generator is operating normally, the ground from the charge indicator circuit is removed and the charge indicator should no longer be lighted. The S terminal is connected to the voltage sense circuit that is connected to another point in the B+ circuit for the desired voltage control, and is also hot at all times. If this circuit is disconnected for any reason, the generator reverts to internal voltage for control. High resistance in this circuit may cause the generator to produce an incorrect or erratic system voltage.