The S1501 instrument is a microprocessor-based alarm, shutdown and control system with tachometer/hourmeter function.
It annunciates in alphanumeric characters the protective device that has signaled an alarm or caused equipment shutdown.
Information is called up and adjustments are made on a six-button keypad on the face of the unit. Configurations such as alarm or shut-down nomenclature, preset timers and tachometer calibration can be made in the field.
The FW Murphy S1501 system has seven SPDT relays. On the standard model, the relays are assigned to the following functions: lube, crank, ignition/motor, fuel valve/cooler, load, alarm and shutdown.
