Annunciator Setup - Crank Setup: Difference between revisions

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If using EMIT engine controls, the annunciator can be used to autostart the engine. During autostart, the annunciator will actuate the STARTER output (digital out 2) and activate the fuel valve, and crank until the engine reaches a cutoff speed. The annunciator will then communicate with the (EMIT) Governor to idle for a specified amount of time, then ramp to the Auto governor operating condition. If not using an EMIT governor, the autostart function cannot be used, but autostart might still be enabled through an external ECU, such as the CAT ADEM.
If using EMIT engine controls, the Brain can be used to control the engine crank cycle. Previously this was called "Autostart", but now is called "Crank Setup"


The Autostart Setup Page (Pg. 677) is accessed from the main setup page by selecting “Outputs Setup” then “Auto-Start”
During the crank cycle, the Brain will actuate the STARTER output (digital out 2) and activate the fuel valve, and crank until the engine reaches a cutoff speed. The Brain will then communicate with the (EMIT) Governor to idle for a specified amount of time, then ramp to the Auto governor operating condition.


[[File:Auto Start.jpg]]
The Crank Setup is accessed from the main setup page by selecting “Outputs Setup” then “Crank Setup” (or "Auto start" on old versions).


''Autostart Setup''
[[File:CrankSetup.png|600px]]


The first autostart setting is the Pre-Start Warning Time. This is the amount of time the annunciator will activate a siren and/or beacon to warn any personnel of an impending autostart. The next setting is the purge time, which is the amount of time the engine will crank without fuel. The Max Crank Time specifies the maximum amount of time the annunciator should crank the engine, and if the engine does not start in this time the annunciator will fault out. The RPM cutoff specifies what speed the engine is considered started and cranking should stop.
Settings detail:


The second autostart setup page specifies the idle time, which is the amount of time to idle the engine before ramping to full speed. Note that if an idle permissive condition is enabled on the governor it will also have to be met before ramping to full speed. Finally, the user is asked whether autoload of the compressor is used, and if so, will navigate next to autoload setup.
*'''Pre-Start Warning Time''': The amount of time the siren and/or beacon will activate to warn any personnel of an impending start
*'''Purge Time''': The amount of time the engine will crank without fuel, where ignition is enabled but fuel valve is off
*'''Max Crank Time (s)''': The maximum amount of time the starter should crank the engine, and if the engine does not start in this time the sequence will fault out
*'''RPM Cutoff''': Specifies what speed the engine is considered started and cranking should stop.
*'''Min Idle Time''': The amount of time to idle the engine before ramping to full speed. Note that if an idle permissive condition is enabled on the governor or Brain it will also have to be met before ramping to full speed.

Latest revision as of 16:42, 8 August 2022

If using EMIT engine controls, the Brain can be used to control the engine crank cycle. Previously this was called "Autostart", but now is called "Crank Setup"

During the crank cycle, the Brain will actuate the STARTER output (digital out 2) and activate the fuel valve, and crank until the engine reaches a cutoff speed. The Brain will then communicate with the (EMIT) Governor to idle for a specified amount of time, then ramp to the Auto governor operating condition.

The Crank Setup is accessed from the main setup page by selecting “Outputs Setup” then “Crank Setup” (or "Auto start" on old versions).

CrankSetup.png

Settings detail:

  • Pre-Start Warning Time: The amount of time the siren and/or beacon will activate to warn any personnel of an impending start
  • Purge Time: The amount of time the engine will crank without fuel, where ignition is enabled but fuel valve is off
  • Max Crank Time (s): The maximum amount of time the starter should crank the engine, and if the engine does not start in this time the sequence will fault out
  • RPM Cutoff: Specifies what speed the engine is considered started and cranking should stop.
  • Min Idle Time: The amount of time to idle the engine before ramping to full speed. Note that if an idle permissive condition is enabled on the governor or Brain it will also have to be met before ramping to full speed.
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