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February 27 2024 PSXX Delay CV 57
This for PSXX software Rev G and later; including build date April 2023 & later.
- CV 57 is only available for the PSXX-1, PSXX-2 & PSXX-3
- CV 57 is not available on the PSXX-AR & PSXX-ARSC circuit breaker with auto reverse
PSXX CV 57 Description & Function
- Default=27. Acceptable values 27-255
- Small duration current spikes that occur occasionally can normally be ignored to prevent nuisance tripping of the breaker.
- As the duration of the spike increases and/or the frequency increases, the current spike(s) can become more of a problem for the layout.
- By default, the PSXX will ignore current spikes that are less than 100us in duration.
- This setting provides the most protection for your layout.
- However, the use of RailCom, some decoder's low speed control, and/or dirty track (among other things) can cause current spikes longer than 100us that occur with enough frequency that the breaker will trip at the default setting.
- Setting CV57=75 or CV57=125 will generally prevent the breaker from tripping under these circumstances.
- NOTE: setting this CV DOES NOT get rid of the current spikes, they are still present and can cause damage to your layout over the long term.
- Setting this CV simply tells the PSXX that it is OK not to trip on the current spikes.
- Normal short circuit tripping is not affected.
- Under these conditions, D18 (the blue LED) may be flickering or even continuously lit indicating frequent current spikes in excess of the PSXX trip current setting.
