64855 2 Mercury CLIP

ECM Identification Parameters
Equipment ID
The customer can assign an Equipment ID to identify the engine application.Engine Serial Number
The engine serial number is programmed into the ECM at the factory. The number is stamped on the engine information plate. If the ECM is replaced, the engine serial number must be programmed into the new ECM.ECM Serial Number
The ECM serial number is programmed into the ECM at the factory.Software Group Part Number
Part number of the flash file that is currently installed in the ECM.Software Group Release Date
Release date of the flash file that is currently installed in the ECM.Software Group Description
Description of the application for the flash file that is currently installed in the ECM.Air/Fuel Ratio Control
Before the initial start-up, a current gas analysis is required. Periodic gas analyses are also recommended. Use the Cat Software, LERW4485, "Gas Engine Rating Pro (GERP)" to calculate the fuel properties to input in the ECM.Note: Use Cat GERP Software, LERW4485, "Gas Engine Rating Pro (GERP)" to calculate the fuel properties. Improper programming of the air/fuel ratio control can result in damage to the engine.GERP also contains information that is related to engine performance.Emissions Feedback Mode Configuration (CG137-12 Engines)(If Equipped)
The "Emissions Feedback Mode Configuration" parameter can be set to "Oxygen Feedback" or to "Feedback Disabled". This feature allows the feedback control to be disabled to troubleshoot the engine. For example, disable this feature to determine if the air/fuel ratio control is the cause of a problem with instability of the engine.If a problem with the oxygen sensor is suspected, set this parameter to "Feedback Disabled". This setting will place the engine control in open loop mode. Use the "Emissions Feedback Disable Fuel Actuator Position Command" parameter to adjust the air/fuel mixture for the engine. An emissions analyzer must be used to verify the emissions levels of the engine while the engine is operated in open loop mode.Do not leave an engine that is operating in open loop mode unattended.Aftertreatment #1 Outlet Oxygen Sensor Voltage Offset (CG137-12 Engines)(If Equipped)
Use the "Aftertreatment #1 Outlet Oxygen Sensor Voltage Offset" parameter to calibrate the control map for the oxygen sensor signal voltage while the engine is in "Oxygen Feedback" mode. Use an emissions analyzer to determine the emission levels of NOX that is in the exhaust. Increment the "After treatment #1 Outlet Oxygen Sensor Voltage Offset" parameter to increase the level NOX in the exhaust. Decrement the "After treatment #1 Outlet Oxygen Sensor Voltage Offset" parameter to decrease the level NOX in the exhaust.Emissions Feedback Disable Fuel Actuator Position Command (CG137-12 Engines)(If Equipped)
Use this parameter to adjust the fuel valve position while the Emissions Feedback Mode Configuration is set to Feedback Disabled.Speed Control
Low Idle Speed
Program this parameter to the desired low idle rpm.Engine Acceleration Rate
This parameter controls the rate for engine response to a change in the desired engine speed. For example, the engine can be programmed to accelerate at a rate of 50 rpm per second when the "Idle/Rated" switch is turned to the "Rated" position.This parameter is also used for the rate of deceleration.Maximum Engine High Idle Speed
Program this parameter to the desired maximum high idle rpm.The actual high idle speed is regulated by the desired speed input. The regulation is linear in proportion to the desired speed input. An input of 0 percent results in the minimum high idle rpm and an input of 100 percent results in the maximum high idle rpm.Minimum Engine High Idle Speed
Program this parameter to the desired minimum high idle rpm.The actual high idle speed is regulated by the desired speed input. The regulation is linear in proportion to the desired speed input. An input of 0 percent results in the minimum high idle rpm and an input of 100 percent results in the maximum high idle rpm.The "Minimum High Idle Speed" parameter and the "Maximum High Idle Speed" parameter determine the slope of the desired speed input.Governor (Proportional) Gain Percentage
This parameter is used in determining the rate of response to an engine load. Refer to Testing and Adjusting, "Engine Governing - Adjust" for the adjustment procedure.Governor (Integral) Stability Percentage
The adjustment of "Governor Stability Factor" dampens the response of the actuator to changes in the load and speed. Increasing this value provides less damping. Decreasing the value provides more damping. To reduce the governor overshoot, decrease the value. To reduce governor undershoot, increase the value. Refer to Testing and Adjusting, "Engine Governing - Adjust" for the adjustment procedure.Start/Stop Control
Engine State Control Input Configuration
Use this parameter to select the type of input signal that is used for the start/stop control.Starting System #1 Type
This parameter defines the type of starting system that has been installed on the engine.Crank Terminate RPM
The ECM disengages the starting motor when the engine speed exceeds the programmed "Crank Terminate RPM". This parameter is preset at the factory and this value should be sufficient for all applications.Engine Purge Cycle Time
The "Engine Purge Cycle Time" parameter is the duration of time for the engine to crank without fuel or spark during the crank cycle. The "Engine Purge Cycle Time" parameter allows any unburned fuel to exit through the exhaust before the fuel and the ignition are enabled.Cycle Crank Time
The "Cycle Crank Time" parameter is the amount of time for activation of the starting motor, the ignition, and the gas shutoff valve during start-up. If the engine does not start within the specified time, the attempt to start is suspended for a rest cycle. The rest cycle is also equal to the "Cycle Crank Time".