Usage:
Customer Specified Parameters allow a customer to program some engine/system parameters. Customer parameters may be changed repeatedly.
NOTE: Customer Passwords are required to change these parameters.
The following is a list of Customer Specified Parameters. Use SENR6497 Electronic Troubleshooting Manual (from SENR6465 Service Manual) and SEHS9199 Tool Operating Manual for NEXG4516 Industrial Engine Functions Service Program Module (SPM) in order to read and/or change the parameters when using the Electronic Service Tool.
Certain parameters that affect the 3176B Industrial Engine operation may be changed through Electronic Service Tools. The parameters are stored in the ECM, not in the Personality Module (PM). Any parameters can be read, but passwords are used to protect parameters from unauthorized changes.
There are two categories for parameters.
- * System Configuration Parameters can be changed only with the proper Factory Passwords.
- * Customer Specified Parameters can be changed only with the proper Customer Passwords.
System Configuration Parameters
The following is a brief description of a specific Customer Specified Parameter and the value for Maximum, Minimum, and the default values. The Default value is the setting which should be programmed if the Customer Specified Parameter is not used.
The engine rating and power range is programmable within a rating family. This feature will optimize the engine power and speed to a vehicle and its application.
The minimum engine rpm (may be programmed to any value between 600 and 1600 rpm).
Maximum - 1600 rpm
Minimum - 600 rpm
Default - 700 rpm
Auxiliary Temperature High Warning Point
Auxiliary Temperature is monitored and high Auxiliary Temperature is detected with a programmable Set Point. High Auxiliary Temperature High Warning Set Point can be programmed to any value (°C [°F]), from 50 to 120°C (122 to 248°F).
NOTE: If this parameter is programmed to 120°C (248°F), the Auxiliary Temperature monitoring is disabled.
Auxiliary Pressure High Warning Point
Defines point at which high Auxiliary Pressure is annunciated on CMS/EMS.
Range - 560 to 3000 kPa (81 to 435 psi)
Default - 2400 kPa (348 psi)
PTO/Extend Idle Engine RPM Limit (PTO Mode Engine RPM Limit) - Maximum engine rpm in PTO mode.
Maximum - 2300 rpm
Minimum - 600 rpm
Default - 2120 rpm
PTO Engine RPM Ramp Rate - Engine rpm rate of increase/decrease. This parameter determines Accel, Decel, and Resume PTO Engine rpm rates of increase/decrease. The parameter can be set to an rpm value between 5 and 1000 rpm inclusively.
Maximum - 1000 rpm/second
Minimum - 5 rpm/second
Default - 50 Rpm/second
Maximum engine rpm when the engine is under load. The engine will still achieve Rated RPM under no load conditions.
NOTE: TEL is dependent upon the RATING number, with some RATING numbers allowing no or little variation as specified below.
Maximum - 2300 rpm
Minimum - 1600 rpm
Default - 2120 Rpm
Top Engine Limit With Droop (Top Engine Limit Overrun)
Allows the engine to exceed the Top Engine Limit with a partial load. The RPM Limit increases linearly as load decreases to 150 rpm above the selected limit for no load.
Maximum - ON
Minimum - OFF
Default - OFF
A/C Pressure Switch Fan-On Time
An input to the ECM is available for connection of a normally closed high pressure A/C switch. The ECM has a timer built in to prevent excessive cycling of the cooling fan clutch due to successive cycling of the A/C switch input.
Maximum - 600 seconds
Minimum - 30 seconds
Default - 0 seconds
Engine Monitoring Mode - Determines the level of action taken by the ECM in response to a potentially engine-damaging condition recognized by the Caterpillar Coolant Temperature, Oil Pressure, Inlet Manifold Air Temperature, or OEM Coolant Level (if installed and enabled) Sensors.
Default - WARNING
Alternative - OFF
Alternative - DERATE
Alternative - SHUTDOWN
Coolant Level Sensor Enable/Disable
Determines if the ECM monitors the Coolant Level Sensor inputs.
Default - ENABLED
Alternative - DISABLED
Fuel Correction Factor - The fuel correction factor is available to fine tune all fuel data stored in the future by the ECM. Caterpillar recommends this factor be changed only after a significant operating interval with a comparison of actual tank capacity fuel economy compared to ECM recorded fuel economy. The operating interval should also reflect a typical operating routine. The Factor is a percentage, programmable in one-half (0.5) percent increments.
Minimum - -63.5
Maximum - +63.5
Default - 0
Calculating Fuel Correction Factor - The following formula should be used to determine the Fuel Correction factor (FCF).
new FCF = old FCF + [(100 + old FCF) × error] ÷ 100
where old FCF is the Fuel Correction Factor currently in ECM, and error is calculated as follows.
error = [(tank economy - ECM economy) ÷ tank economy] × 100
Tank capacity fuel economy is 7.1 mpg, ECM economy is 7.0 mpg with an old FCF of -2.5 Therefore error is [7.1 - 7.0) ÷ 7.0] × 100 = 1.4.
new FCF is -2.5 + ([100 + 2.5] × 1.4) ÷ 100 = -1.135 rounded off to the nearest 0.5, new FCF = -1.0
Maintenance Indicator Parameters
Maintenance Indicator Mode - The ECM records data related to maintenance. When selected (Manual - Hours or Automatic - Hours), then all maintenance indications (PM Level 1, PM Level 2, Coolant Flush/Fill) on the service tool will be in hours. The ECM provides PM Level 1 maintenance interval and last maintenance information.
Default - OFF
Alternative - Manual-Hours
Alternative - Automatic-Hours
PM Level 1 Interval (for Manual Maintenance Indicator Mode) - PM Level 1 Interval allows a user specified PM1 maintenance interval. This parameter (PM1 Interval) must be programmed only if Maintenance Indicator Mode is programmed to Manual-Hours.
For Manual-Hours
Maximum - 750
Minimum - 100
Default - 300
PM Level 1 Engine Oil Capacity in quarts (for Automatic Maintenance Indicator Mode) - PM Level 1 Interval can be determined from the ECM based on fuel usage. This parameter must be programmed only if Maintenance Indicator Mode is programmed to Automatic-Hours. Sump Capacity influences the Maintenance Interval.
For Automatic-Hours
Minimum - 20
Maximum - 60
Default - 30
Used by the ECM to scale the engine speed signal into revolutions per minute for a tachometer. Programmed in pulses per revolution. The range is from 12 to 500 ppr (0.1 ppr increments).
Maximum - 500 ppr
Minimum - 12 ppr
Default - 113 ppr