CONE-BEARING 3N4968 - Caterpillar

The RAPTOR valve, being a "smart valve", has advance diagnostics. There are two ways of communicating the diagnostic codes:* CAN link* Diagnostic LED (visible on the cover)
The RAPTOR valve may not return to minimum fuel for all faults. The engine, turbine, or other type of prime mover should be equipped with an over speed, misfire, detonation detection shut down device(s), that operate totally independently of the prime mover control device(s) to protect against runaway or damage to the engine, turbine, or other type of prime mover with possible personal injury or loss of life should the RAPTOR system fail.
The RAPTOR diagnostic codes are displayed on the diagnostic LED by flash codes:* Flashing Green: Normal run* Orange Code: Alarm-see troubleshooting guide for code descriptions* Red Code:Shutdown-see troubleshooting guide for code descriptionsAn example error code is shown in Figure 3-3.
Figure 3-3. Flashing Code ExampleThe flash code starts with the tens digit of the error code. After a delay, the ones digit is flashed. A zero in the ones digit causes ten blinks. The error code in the above example is 42.For error code descriptions and appropriate action see the troubleshooting chapter.Service Port
The service port provides an RS-232 connection for troubleshooting proposes. It is intended for use by Woodward certified personnel. In case this cover is removed, torque the screws to 2.7 N m (24 lb-in). Proper torque is very important to ensure that the unit is sealed properly.