BEARING AS-SWING 3860754 - Caterpillar

Illustration 1 g00835403
520 Control Module (Generator Set) (1) Indicator for engine overspeed (2) Indicator for coolant temperature (3) Indicator for oil pressure (4) Indicator for alarm (5) Automatic start position (6) Programmable indicators (7) Manual start position (8) Engine control switch (ECS) (9) Indicator for engine overcrank (10) Indicator for emergency stop (11) Stop/Reset positionAn indicator will light when a fault condition is present. One of the programmable outputs will activate if one of the programmable outputs is selected as a common alarm output. The first fault is shown by a flashing indicator, and all subsequent faults are shown by a steady indicator. Warnings are also shown by a steady indicator. The indications are fed directly from the appropriate input and the indications are shown by a steady indicator. A steady indicator remains illuminated while the input is active. This feature can be used to allow the module to operate as an annunciator.Note: A programmable output can be configured in order to be a shutdown, a warning, or a common alarm for shutdown and warnings. The configuration is in addition to the other control sources that may drive the programmable output.Note: The indicator for alarm (4) on the front panel illuminates in order to indicate all shutdown and warning faults. The indicator for alarm (4) is used mainly to indicate the following fault conditions: charge fail, fail to stop, underspeed, sensor failure and oil pressure switch. A separate indicator does not illuminate for each different fault condition. A warning indication is shown by a steady indicator. Shut down indications are shown by a flashing indicator.Note: If the indicators are flashing simultaneously, the configuration of the module is not correct. The module must be configured again.Warnings
Warnings reset automatically. Once the fault has been removed, the input is reset.Charge Fail - The alternator voltage falls below the trip voltage (8.0 V) after the safety on timer has expired. The indicator for alarm (4) is illuminated.Programmable Inputs - If a programmable input has been configured as a warning, the appropriate programmable indicators (6) will illuminate.Oil Pressure Switch - The control module will only allow the engine to crank if the oil pressure is initially low and the engine is at rest. The warning could also indicate that the oil pressure switch is faulty. The indicator for alarm (4) will illuminate.Shutdowns
Shutdowns stop the generator. The engine control switch (8) must be turned to Stop/Reset (11) and the fault must be removed in order to reset the module. The engine cannot be restarted if a shutdown is present.Emergency Stop - Removal of the positive DC power supply from the emergency stop input initiates the following sequence. First, a controlled shutdown of the engine is initiated and any attempt to restart the engine is prevented. The engine will not restart until the emergency stop push button has been reset. Then, the positive DC power supply is not connected to the fuel solenoid or the starter solenoid. The emergency stop input is always active when the