Section 75 00-02-0878
2013-03-07 - 169 -
Power Up In a Specific
Mode
In the above example, the unit will always power up in manual mode. The timer in Logic
1 sets the output for 5 s, and this is used to set manual mode in event 2. When the
timer expires, you can freely select any mode since the virtual event 1 turns ON and the
Logic 2 says NOT virtual event 1.
Flip-Flop Function
If a flip-flop (periodical relay output ON/OFF) function is required, the following example
can be used:
The example shows how to configure relay 5 as an output for a flashing light (or similar)
during engine stop-ping sequence.
The event "DG Stop activated" triggers the function.
Logic 1: DG stop activated event triggers the function. The relay output resets if the
virtual event (VE) 1 is active.
Logic-2: Relay 5 triggers VE 1 or VE 1 holds itself ON provided VE 2 is NOT active. The
time delay of VE 1 is the relay 5 ON time.
Logic 3: VE 1 triggers VE 2. The time delay of VE 2 is the relay 5 OFF time. This time
has to be longer than the time delay of VE 1.
The relay 5 (parameter) has to be set to "Limit".
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