ELEMENT-COUPLING 7Y1901 - Caterpillar

The engine control panel is equipped with three levels of protection for the shutdown circuit:
Minimal
Complete
MaximumEach level of protection can be ordered with an annunciator. The annunciator is built into the ECP. The annunciator consists of a number of indicators for each condition that can exist. When a condition is out of range, the ECP will illuminate the indicator for that condition.Table 1 describes the protection that is available for shutdowns for each level.
Table 1
Description of the Levels of Protection for Shutdowns    
Description    Annunciator Label    Minimal    Complete    Maximum    
Overspeed     "OVERSPEED"     X     X     X    
High crankcase pressure     "HIGH CRANKCASE PRESS"     X     X     X    
Low engine oil pressure     "LOW ENG OIL PRESS"     X     X     X    
Metal particle detector     "METAL CHIP FAULT"     X     X     X    
High engine oil temperature     "HIGH ENG OIL TEMP"     N/A     X     X    
High jacket water coolant temperature     "HIGH JACKET WATER TEMP"     N/A     X     X    
Loss of jacket water     "LOSS JACKET WATER FAULT"     N/A     X     X    
Customer defined     "SPARE"     X     X     X    X - standard equipmentN/A - Not AvailableAn optional shutdown indicator can be installed by the customer. The customer can connect one wire of an alarm contact to terminal 41 of the engine protection box (EPB) and the other wire can be connected to one of the following terminals of the EPB: 1A, 90, 91 and 93. The following table shows the shutdown response for each terminal.
Table 2
Terminal    Shutdown Response    
1A     The shutdown will be enabled whenever battery power is available and circuit breaker 1 is closed.    
90     The shutdown will be enabled whenever the following conditions are met:
Battery power is supplied.
The engine control switch is located in the REMOTE position or LOCAL position.
The fuel control switch is located in the ON position.
If the engine control switch is in the REMOTE position, the auto start/stop relay must also be energized.    
91     The shutdown will be enabled nine seconds after the engine is started.
The shutdown will be disabled two seconds after the engine shuts down.    
93     The shutdown will be enabled nine seconds after the engine RPM goes above the RPM of the oil step.
The shutdown will be disabled when the engine RPM goes below the RPM of the oil step.