G3512E Generator Set Engine Caterpillar

Certain parameters are unique for each engine application. Table 1 is a list of the parameters that can be configured for G3512E Engines. The parameters are programmed into the Electronic Control Module (ECM) via the Caterpillar Electronic Technician (ET). The values of the parameters can be viewed on the "Configuration" screen of Cat ET.

Refer to Systems Operation/Testing and Adjusting, "Electronic Control System Parameters" for the descriptions of the parameters.

Table 1

Configuration Parameters for G3512E 1.0 MW and 1.2 MW Engines
Description	Default Value	Minimum Value	Maximum Value
ECM Identification Parameters
"Equipment ID"	17 alphanumeric characters
"Engine Serial Number"	0XX00000 or XXX00000
Timing Control
"First Desired Timing"	23 deg BTDC for 1.0 MW	10 deg BTDC	40 deg BTDC
	25 deg BTDC for 1.2 MW
"Second Desired Timing"	14 deg BTDC	10 deg BTDC	40 deg BTDC
Air/Fuel Ratio Control
"Fuel Quality Input Type Configuration"(1)	Configured Value
"Fuel Quality"	35.4 MJ/nm3 900 BTU	7.9 MJ/nm3 200 BTU	102.0 MJ/nm3 2600 BTU
"Fuel Quality Sensor LHV Lower Limit"(1)	11.8 MJ/nm3 300 BTU	7.9 MJ/nm3 200 BTU	25.2 MJ/nm3 640 BTU
"Fuel Quality Sensor LHV Upper Limit"(1)	33.5 MJ/nm3 850 BTU	25.6 MJ/nm3 650 BTU	94.5 MJ/nm3 2400 BTU
"Gas Specific Gravity"	.6	0	2
"Fuel Specific Heat Ratio"	1.3	1	2
"Desired Emission Gain Adjustment Percentage"	100%	85%	115%
"Air/Fuel Proportional Gain"	0	-50	50
"Air/Fuel Integral Gain"	0	-50	50
Speed Control
"Low Idle Speed"	1000 rpm	500 rpm	1300 rpm
"Minimum Engine High Idle Speed"	1400 rpm	900 rpm	1500 rpm
"Maximum Engine High Idle Speed"	1600 rpm	1500 rpm	1900 rpm
"Engine Acceleration Rate"	50 rpm/sec	1 rpm/sec	50000 rpm/sec
"Desired Speed Input Configuration"	0-5 VDC Input
"Governor Type Setting"	Isochronous
"Engine Speed Droop"	0%	0%	10%
"Governor (Proportional) Gain Percentage"	100%	10%	500%
"Governor (Integral) Stability Percentage"	100%	10%	500%
"Governor Auxiliary 1 (Proportional) Gain Percentage"	100%	10%	500%
"Governor Auxiliary 1 (Integral) Stability Percentage"	100%	10%	500%
Start/Stop Control
"Driven Equipment Delay Time"	120 sec	0 sec	600 sec
"Crank Terminate rpm"	250 rpm	100 rpm	600 rpm
"Engine Purge Cycle Time"	0 sec	0 sec	60 sec
"Cooldown Duration"	0 min	0 min	30 min
"Cycle Crank Time"	15 sec	5 sec	300 sec
"Engine Overcrank Time"	120 sec	5 sec	360 sec
"Engine Speed Drop Time"	30 sec	5 sec	120 sec
"Engine Pre-Lube Time Out Period"	120 sec	30 sec	300 sec
Monitoring and Protection
"High Inlet Air Temp Engine Load Set Point"	50%	0%	199%
"Impending Shutdown Delay Enable Status"	Enabled
"Impending Shutdown Delay Time"	10 min	1 min	10 min
Power Monitoring
"Engine Load Input Configuration"	0-5 VDC Input
"Generator Output Power Sensor Scale Factor"	288.3 kW/Volt
"Generator Output Power Sensor Offset"	-45.21 kW
"Engine Output Power"	1030 kW for 1.0 MW
	1242 kW for 1.2 MW
"Engine Driven Accessory Load Configuration"	0 kW
"Generator Efficiency"	100%
Passwords
"Customer Password #1"
"Customer Password #2"
Security Access Parameters
"Total Tattletale"

(1)	This parameter applies to engines that are equipped with software that supports an input for variable fuel Btu.