3500B Locomotive Engines Caterpillar

System Configuration Parameters are parameters that affect emissions, power of the engine, and other features. The parameters are programmed at the factory. In most cases, the parameters do not need to be changed. The System Configuration Parameters must be reprogrammed if an ECM is replaced and/or the engine rating is reprogrammed. System Configuration Parameters do not need to be reprogrammed if the Personality Module is replaced. Proper values for these parameters are available on an Electronic Service Tool. Certain Configuration Parameters are also stamped on the Engine Information Plate.

Note: Changing the parameters that are protected by factory passwords may cause your Caterpillar warranty to be voided.

Engine Serial Number

The engine serial number should be programmed to match the engine information plate. The serial number is not programmed on a new ECM.

FRC Offset Value

The ECM determines the FRC offset value. The FRC Offset value is used to adjust the fuel ratio control. This minimizes the exhaust smoke when the engine is accelerated.

An offset value of ± 25 kPa (± 4 psi) may be used in order to adjust for customer preference, fuel quality, or other factors that affect the engine performance. The default setting is 0.

Note: This parameter may not be available on all applications.

Rated Fuel Position

This parameter is used to set engine power. A Factory Password is required to change this setting.

Table 1

Minimum	Default	Maximum
Minimum Rack	Engine Dependent	Engine Dependent

Low Idle

The parameter defines the lowest rpm level.

Table 2

Minimum	Default	Maximum
450 rpm	600 rpm	1000 rpm

Cooldown Speed

This parameter defines the engine speed when the engine shutdown is activated.

Table 3

Minimum	Default	Maximum
450 rpm	600 rpm	1800 rpm

Cooldown Period

This parameter defines engine operation at the cooldown speed. Programming this parameter to 0 will disable this function.

Table 4

Minimum	Default	Maximum
0 minutes	0 minutes	60 minutes

Prelube Time

The parameter sets the amount of time for prelubrication. Programming this parameter to 0 will disable this function.

Table 5

Minimum	Default	Maximum
0 seconds	0 seconds	210 seconds

Crank Duration

The crank duration determines when the starting motors will be energized. The crank duration determines when the starting motors will be disengaged. Programming this parameter to 0 will prevent the ECM from engaging the starting motors.

Table 6

Minimum	Default	Maximum
0 seconds	0 seconds	60 seconds

Cranking Cycles

This parameter is the total number of crank cycles that can be performed.

Table 7

Minimum	Default	Maximum
0	0	10

Crank Terminate Speed

This parameter determines when the starting motor will disengage.

Table 8

Minimum	Default	Maximum
100 rpm	400 rpm	500 rpm

Air Shutoff

Programming the parameter to "DISABLED" will disable the air shutoff. This parameter should be programmed to "DISABLED" if the function is not being used or installed on this engine. This will prevent diagnostics from being logged.

Table 9

Minimum	Default	Maximum
Disabled	Enabled	Enabled

FRC Offset Value

The ECM determines the FRC offset value. The FRC Offset value is used to adjust the fuel ratio control. This minimizes the exhaust smoke when the engine is accelerated.

A offset value of ± 25 kPa (± 4 psi) may be used in order to adjust for customer preference, fuel quality or other factors that affect engine performance. The default setting is 0.

Note: This parameter may not be available on all applications. This parameter replaces the mechanical control for the fuel to air ratio. This parameter improves the engine response with improved emission levels.

Table 10

Minimum	Default	Maximum
-25	0	25

Programmable Torque Scaling

This parameter proves a means to derate the engine power output without exchanging torque maps. This will allow the same personality module software to be used for numerous engine ratings.

Table 11

Minimum	Default	Maximum
Min Rack	Engine Dependent	Engine Dependent

Ether Control

Programming this parameter to "DISABLED" will disable the Ether functions. This parameter should be programmed to "DISABLED" if the Ether function is not being used or installed on this engine. This will prevent diagnostic codes from being logged.

Table 12

Minimum	Default	Maximum
Disabled	Disabled	Enabled

"CCM Interface"

The interface will allow you to control the engine from a remote site.

Table 13

Minimum	Default	Maximum
Engine Control 1	Engine Control 1	Engine Control 8

Aftercooler

The engine can use the separate circuit aftercooler system (SCAC). The engine can use the jacket water aftercooler system (JWAC).

Table 14

Minimum	Default	Maximum
SCAC	SCAC	JWAC

Cold Mode Cylinder Cutout

This parameter provides the strategy for the cold mode cylinder cutout.

Table 15

Minimum	Default	Maximum
Disabled	Enabled	Enabled

Fuel Position Multiplier

This parameter decreases the power output from the engine by reducing the fuel. This parameter is used to control the driven equipment. A decrease in engine power does not require a change in the throttle.

Table 16

Minimum	Default	Maximum
Disabled	Enabled	Enabled

Droop

This parameter allows the engine to operate in a load sharing system.

Table 17

Minimum	Default	Maximum
0.0	0.0	10

Engine Acceleration Rate

This parameter limits the rate of change for the desired engine speed. This parameter may also help reduce smoke when you start the engine.

Table 18

Minimum	Default	Maximum
1	250	2000