Setting up failsafe issues

It won't stay tripped. The failsafe trips for 3-4 seconds then tries to reset itself.

[rbamon]

When the B goes off, it comes back on less that quarter of a second later

[Richard L]

There are two timers on the failsafe.

1. Transition delay timer (FSDL) .......... 0.2s - 0.6s.
2. Failsafe reset timer .......... ~3 seconds (fixed)

The Transition delay timer allows the flow signal to stablise before triggering a failsafe event. The start of the transition time is indicated by the onset of the B symbol. If fluid flow does not arrive inside the window area during this grace period, the failsafe will trip and reduce boost.

You can experiment of the FSDL trrimmer on the controller by extending of shorten this "grace" period.

[rbamon]

But either way, why would it trip for a millisecond at best? Once it trips should it not stay tripped? The B always comes back on immediately after going off

[rbamon]

I did think about the FSDL but wasnt sure it would help

[Richard L]

I think you may be confused with the function of the "B". B does not indicate a failsafe trip.

B comes on at the start of an injection event (when threshold is reached). It stays on about 100mS + FSDL, during this time the flow signal must be inside the window area. If it does, the 3-second failsafe will trip and drop boost.

B (100mS) + FSDL allows the flow signal to stabilise so the false alarm will be minimised.

If you cannot get the WL to trip, rotate the WL clockwise or decrease the FSDL.

[rbamon]

Thanks Richard, looks like ill need to adjust the delay as having WL even full clockwise wont trigger it

[Richard L]

There must be something wrong with the WL trimmer. I will send you some instruction how to test it. It will be on the gauge.

Richard

[rbamon]

Ok, thanks Richard