HOUSING 9N6518 - Caterpillar

Alarm systems and shutdown systems contain sensors, contactors, and transducers. The sensors detect information about engine performance. The sensors are connected to contactors or transducers. The contactors and transducers are connected to a junction box.
Illustration 1 g00275086
Contactor and transducer panel.Setpoint - A setpoint is a critical limit of an operating parameter. A setpoint can be a temperature, a pressure, a level, a speed, etc. An alarm or a shutdown is activated if an operating parameter reaches a setpoint.Contactor - A contactor is a switch that is controlled by temperature or pressure. The temperature or pressure that triggers the switch is set to a critical setpoint. If the setpoint is reached, an alarm or a shutdown will be activated.Transducer - A transducer converts a mechanical stimulus into an electrical signal. An external power source is required.Protective systems are mandatory on Caterpillar 3600 Series Fast Vessel Engines. Two types of protective systems are available. The Marine Monitoring System is controlled by a programmable logic control. The Electrical Engine Protective System is controlled through relay logic. Both systems are briefly described in this section.Marine Monitoring System
The Marine Monitoring System uses a microprocessor to provide engine control and engine monitoring. The Marine Monitoring System enables an operator to use a display screen for controlling and monitoring engine operation.When the package for annunciation is included, the operator is alerted to conditions that can cause alarms and shutdowns. The Marine Monitoring System can stop the engine if the engine operation reaches a setpoint that is programmed for shutdown.Marine Engine Control Panel
Illustration 2 g00270098
(1) Screen. (2) Switch.Engine operation is monitored and controlled through the Marine Engine Control Panel. The Marine Engine Control Panel screen (1) is a touchscreen. The screen is used to configure the Marine Monitoring System for the particular engine. The configuration includes the following features:
The optional gauges can be customized, enabled, or disabled.
Metric units or English units can be selected for the display.
The language that will be displayed can be selected. A keypad is required for this feature.
The communication ports for external addresses can be selected and configured.
The auxiliary gauges can be configured.
Any auxiliary alarms can be configured.An operator can choose from the following menu of monitoring features by using screen (1) :Engine Overview