Woodward easYgen-3000XT Series, Руководство пользователя, Страница: 740 / 1205

6.3.12 Start/Stop Logic Mode "Off"
General notes
The start/stop sequence in the easYgen is completely disabled. This function is needed in
applications where the control of the start/stop logic is completely done by an external
device (e.g. PLC).
The LogicsManager "Release eng.mon." (parameter ╚═▷ 12999 ) has a special function, if
the "Start/Stop mode logic" (parameter ╚═▷ 3321 ) is configured to “Off”. When the
LogicsManager becomes TRUE, the delayed monitoring function alarms are triggered,
which are delayed by the engine speed. If they become FALSE all engine speed related
monitoring functions are switched off. The LogicsManager "Start req. in AUTO"
(parameter
╚═▷ 12120 ) gets a special function if the "Start/Stop mode logic" (parameter
╚═▷ 3321 ) is configured to “Off”. When the LogicsManager becomes TRUE the
operational mode begins. With becoming FALSE the operational mode will be left.
To operate the easYgen in this configuration correctly, the following needs to be done:
• The easYgen requires an external feedback, that the drive system will be started. •
That is the precondition for the easYgen to trigger the delayed monitoring function,
which activates, after a delay time, the speed related monitoring functions.
(underspeed, underfrequency, undervoltage, etc.)
• The easYgen requires an external feedback, that the drive system will be stopped. •
That is the precondition for the easYgen to deactivate the speed related monitoring
functions. This avoids upcoming alarms due the drive system is stopped.
• The easYgen must be directed to switch into the active operational mode or to exit •
this operational mode. The operational mode proceeds with the actions according to
the configured application and transition modes.
Example
Fig. 260: LogicsManager function "Firing speed detection"
740 easYgen-3000XT Series B37574
6 Application Field
6.3.12 Start/Stop Logic Mode "Off"
Released