3126B Marine Engines Caterpillar


System Configuration Parameters

Usage:

3126B 3GS


System configuration parameters are parameters that affect emissions and power of the engine applications. Default values for the parameters are programmed at the factory. Some parameters may be changed by the customer to suit the needs of the specific application. System configuration parameters consist of the following:

  • Parameters for identification by the Electronic Control Module (ECM)

  • Parameters for selected engine rating

  • Parameters for engine/marine gear

  • Parameters for security access

  • Parameters for maintenance

The ECM identification parameters must be programmed if the ECM is replaced and/or if you reprogram the engine rating. It is not necessary to reprogram the ECM identification parameters if a new personality module is "flashed in". Proper values for these parameters are available on ET. Certain configuration parameters are also stamped on the engine information plate.

Note: If the parameters that are protected with the factory passwords are changed, the Caterpillar warranty may be voided.

Parameter Descriptions

"Rating Number"

The "Rating Number" corresponds to the selected set of performance maps for the application. This selected set of performance maps comes out of several unique sets of maps that may be resident in the flash file. The dealer and/or the OEM of the vessel will need to select the appropriate rating tier, if more than one rating tier is present. The rating tier is A through E.

"Personality Module Part Number"

"Personality Module Part Number" is programmed into the software.

"Personality Module Release Date"

"Personality Module Release Date" is programmed into the software.

"Equipment ID"

"Equipment ID" allows the customer to enter a description into the ECM to identify the vessel. A maximum of 17 characters may be entered in the field. This parameter is only for reference by the customer. This parameter is not required.

"Engine Serial Number"

Program the "Engine Serial Number" to match the engine serial number that is stamped on the engine information plate.

Note: When you are requesting factory passwords, always use the engine serial number that is resident in the ECM.

"ECM Serial Number"

The "ECM Serial Number" is stored in the memory of the ECM. The "ECM Serial Number" can be accessed by the use of the service tool.

"Total Tattletale"

The parameter counts the number of changes to system parameters.

"FLS" (Full Load Setting)

"FLS" is a number that represents the adjustment to the fuel system that was made at the factory to fine-tune the fuel system. The correct value for this parameter is stamped on the engine information plate. Factory passwords are required.

"FTS" (Full Torque Setting)

"FTS" is similar to "FLS". Factory passwords are required.

"Low Idle Speed"

"Low Idle Speed" is the minimum allowable operating speed for the engine.

"Maximum Trolling Engine Speed"

The "Maximum Trolling Engine Speed" sets the high idle limit to the programmed value when the vessel is in trolling mode. The value must be higher than the programmed "Low Idle Speed".

"Transmission Oil Temperature Sensor"

The "Transmission Oil Temperature Sensor" parameter can be set to either "Installed" or "Not Installed".

"Transmission Oil Pressure Sensor"

The "Transmission Oil Pressure Sensor" parameter can be set to either "Installed" or "Not Installed".

"Fuel Pressure Sensor"

"Fuel Pressure Sensor" can be programmed to "Installed" or "Not Installed". If this parameter is programmed to "Installed", the monitoring system can be programmed to alert the operator when the fuel pressure is high.

"Coolant Level Sensor"

"Coolant Level Sensor" can be programmed to "Installed" or "Not Installed". If this parameter is programmed to "Installed", the monitoring system can be programmed to alert the operator when the coolant level is low.

"Secondary Throttle Enable Status"

Note: The "Number of Synchronized Engines Configuration", "Engine Location", and "Secondary Throttle Enable Status" must be programmed in the following order:

  • "Number of Synchronized Engines Configuration"

  • "Engine Location"

  • "Secondary Throttle Enable Status"

"Engine Location"

Note: The "Number of Synchronized Engines Configuration", "Engine Location", and "Secondary Throttle Enable Status" must be programmed in the following order:

  • "Number of Synchronized Engines Configuration"

  • "Engine Location"

  • "Secondary Throttle Enable Status"

"Number of Synchronized Engines Configuration"

This parameter must be programmed to the number of synchronized engines that are used in the application. If this parameter is programmed to 2 or more engines, the "Secondary Throttle Enable Status" parameter is automatically programmed to "Enabled".

Note: The "Number of Synchronized Engines Configuration", "Engine Location", and "Secondary Throttle Enable Status" must be programmed in the following order:

  • "Number of Synchronized Engines Configuration"

  • "Engine Location"

  • "Secondary Throttle Enable Status"

"Engine Oil Weight"

Do not program this parameter. Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change".

"Fuel Temperature Sensor"

"Fuel Temperature Sensor" can be programmed to "Installed" or "Not Installed". If this parameter is programmed to "Installed", the monitoring system can be programmed to alert the operator when the fuel temperature is high.

"Engine Oil Capacity"

Program this parameter to match the actual engine oil capacity.

"Fuel Correction Factor"

The "Fuel Correction Factor" (FCF) is available to fine-tune all fuel data that will be stored in the future by the ECM. Caterpillar recommends changing the FCF only after a significant operating interval that includes a comparison of actual fuel economy to the fuel economy that is recorded in the ECM for typical operating conditions.

Calculating the FCF

New FCF = old FCF + [(100 + old FCF) × error] ÷ 100

Note: The old FCF is the FCF that is programmed in the ECM.

Calculating the Error

Error = [(actual fuel economy − economy calculated by the ECM) ÷ actual fuel economy] × 100

"Maintenance Indicator Mode"

The ECM records data that is related to equipment maintenance. The ECM will activate the maintenance indicator lamp when scheduled maintenance is due. The maintenance indicator lamp can be reset by actuating the maintenance clear switch. The maintenance interval may be based on operating hours or on fuel consumption. The ECM provides information that pertains to maintenance intervals and the last maintenance that was performed.

"PM1 Interval"

"PM1 Interval" allows the customer to define the maintenance interval if "Maintenance Indicator Mode" is programmed to one of the manual options. Refer to the Operation and Maintenance Manual for more information.

"Customer Password #1"

This parameter allows the customer to lock out certain parameters by entering a password. Customer passwords must be used to unlock any parameters that are protected by customer passwords before the parameter can be changed. Factory passwords are required if this password is lost.

"Customer Password #2"

This parameter allows the customer to lock out certain parameters by entering a password. Customer passwords must be used to unlock any parameters that are protected by customer passwords before the parameter can be changed. Factory passwords are required if this password is lost.

System Configuration Parameters

Table 1
C7 Parameters 
Parameter  Available Range or Options  Default  Password 
Selected Engine Ratings 
"Personality Module Description"  Software Dependent  Read Only(1) 
"Rating Number"  Software Dependent  None 
"Rated Power"  Software Dependent  Read Only(1) 
"Rated Peak Torque"  Software Dependent  Read Only(1) 
"Top Engine Speed Range"  Software Dependent  Read Only(1) 
"Test Spec"  Software Dependent  Read Only(1) 
"Personality Module Part Number"  Software Dependent  Read Only(1) 
"Personality Module Release Date"  Software Dependent  Read Only(1) 
"ECM Identification Parameters" 
"Equipment ID"  17 alphanumeric characters  Blank  Customer 
"Engine Serial Number"  0XX00000 or XXX00000  Blank  Factory 
"ECM Serial Number"  Hardware Dependent  Blank  Read Only(1) 
"Security Access Parameters" 
Total Tattletale  0 to 65535  Read Only(1) 
"Engine/Gear Parameters" 
"FLS"  Programmed at the Factory  Factory 
"FTS"  Programmed at the Factory  Factory 
"Low Idle Speed"  "550" to "750" rpm  "700"  Customer 
"Maximum Trolling Engine Speed"  "751" to "1200" rpm  "900"  Customer 
"Transmission Oil Temperature Sensor"  "Installed" or "Not Installed"  "Installed"  Customer 
"Transmission Oil Pressure Sensor"  "Installed" or "Not Installed"  "Installed"  Customer 
"Fuel Pressure Sensor"  "Installed" or "Not Installed"  "Not Installed"  Customer 
"Fuel Temperature Sensor Installation Status"  "Installed" or "Not Installed"  "Not Installed"  Customer 
"Coolant Level Sensor"  "Installed" or "Not Installed"  "Not Installed"  Customer 
"Secondary Throttle Enable Status"  "Enabled" or "Disabled"  "Disabled"  Customer 
"Tachometer Frequency Configuration"  "12" to "500" pulses per revolution  "113" pulses per revolution  Customer 
"Engine Location"  "Port", "Center", or "Starboard"  "Port"  Customer 
"Number of Synchronized Engine Configuration"  "1" to "5"  "1"  Customer 
"Engine Oil Weight" (commercial engine ratings)  "0" (Automatic)
"1" (0w20)
"2" (10w30)
"3" (15w40) 
"Automatic Detection"  Customer 
"Maintenance Parameters" 
"Engine Oil Capacity"  19 L (5.0 gal) to 75 L (19.9 gal)  33 L (8.7 gal)  Customer 
"Maintenance Indicator Mode"  "Off", "Man Hour", "Auto Hour", "Man Fuel", or "Auto Fuel"  "Off"  Customer 
"PM1 Interval"  "50" to "750" Hours  "0"  Customer 
"Passwords" 
"Customer Password #1"  8 alphanumeric characters  Blank  Customer 
"Customer Password #2"  8 alphanumeric characters  Blank  Customer 
(1) This parameter can be viewed only. No changes are allowed.

Parameters Worksheet

Note: A mistake in recording this information will result in incorrect passwords.

Table 2
Engine Parameters 
"Rating Number"   
"Personality Module Part Number"   
"Personality Module Release Date"   
"Equipment ID"   
"Engine Serial Number"   
"ECM Serial Number"   
"Total Tattletale"   
"Full Load Setting (FLS)"   
"Full Torque Setting (FTS)"   
"Low Idle Speed"   
"Maximum Trolling Engine Speed"   
"Transmission Oil Temperature Sensor"   
"Transmission Oil Pressure Sensor"   
"Fuel Pressure Sensor"   
"Coolant Level Sensor"   
"Secondary Throttle Enable Status"   
"Engine Location"   
"Number of Synchronized Engines Configuration"   
"Engine Oil Weight" (Commercial Rating Only)   
"Fuel Temperature Sensor"   
"Engine Oil Capacity"   
"Fuel Correction Factor"   
"Maintenance Indicator Mode"   
"PM1 Interval"   
"Customer Password #1"   
"Customer Password #2"   

Table 3
Information from Engine Information Plate 
"Engine Serial Number"   
"FTS"   
"FLS"   

Note: Compare the FLS and the FTS from the ECM with the values that are listed on the Engine Information Plate. The FLS and the FTS should be changed because of a mechanical change in the engine. The use of the wrong parameters could damage to the engine. The use of the wrong parameters may also void the Caterpillar warranty.

Programmable Monitoring System

The Programmable Monitoring System determines the level of action that is taken by the ECM in response to a condition that can damage the engine. These conditions are identified by the ECM from the signals that are produced from the following sensors.

  • Inlet Air Temperature Sensor

  • Engine Coolant Temperature Sensor

  • Engine Oil Pressure Sensor

  • Transmission Oil Temperature Sensor

  • Transmission Oil Pressure Sensor

  • Fuel Pressure Sensor

  • Coolant Level Sensor

Table 4
Programmable Monitoring System Parameters 
Parameter  Action  Time Delay in Seconds  Set Points  "Disable" 
Min Max  Default  Min  Max  Default 
"Low Engine Oil Pressure"  Warning  30  30  30  (1)  (1)  (1)  NO 
Derate 30  30  30  (1)  (1)  (1)  YES 
"High Engine Coolant Temperature"  Warning  30  30  30  106 °C (223 °F)  106 °C (223 °F)  106 °C (223 °F)  NO 
Derate 30  30  30  110 °C (230 °F)  110 °C (230 °F)  110 °C (230 °F)  YES 
"Engine Overspeed"  Warning  N/A  N/A  115% of Rated Engine Speed (2)  NO 
"High Engine Air Inlet Temperature"  Warning  30  30  30  60 °C (140 °F)  70 °C (158 °F)  70 °C (158 °F)  NO 
Derate 30  30  30  66 °C (150 °F)  80 °C (176 °F)  80 °C (176 °F)  YES 
High Transmission Oil Temperature  Warning  60  10  50 °C (122 °F)  120 °C (248 °F)  95 °C (203 °F)  YES 
High Transmission Oil Pressure  Warning  60  10  700 kPa (102 psi)  2930 kPa (425 psi)  2412 kPa (350 psi)  YES 
"High Fuel Pressure"  Warning  30  (1)  (1)  (1)  YES 
"Low Coolant Level"  Warning  60  30  N/A  N/A  N/A  YES 
Derate 60  30  N/A  N/A  N/A  YES 
"Unexpected Engine Shutdown"(3)  Shutdown  N/A  N/A  NO 
(1) Map Dependent
(2) "Engine Overspeed Warning" disables injection when the engine speed exceeds 115% of Rated Engine Speed. The injection is enabled when the engine speed drops below 2800 rpm.
(3) Unexpected Engine Shutdown does not appear in the parameters for ET. This parameter is used in active events and logged events.

Note: Refer to Troubleshooting, "Troubleshooting with an Event Code" for additional information.

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