I think you are confused by comparing 2 different situations !!
1st your company minimum acc height is 400 feet in case of 2 eng t/o
So your climb performance is much better at 400 ft with your present rate of climb you will be able to clear your obstacles
2nd situation you have an an egine failure at v1 : at this point disregard your company's minimum acc height and apply your minimum acc height delivered by your airport analysis table ! 529 ft in this case !
Minimum and max acc altitudes are 1eng out acc altitudes ... These altitudes are not applicable in both 2 eng and engine out conditions because
A) your clb gradient is different so yous minimum acc altitude is the most restrictive due to obstacles air density etc so single engine
B) the max is applicable to limit your engine to thrust time to 10 min (imagine if you needed 10 min to reach 1861 and to accelerate to green dot speed with 2 engines)
Now .... If your airport analysis height is much higher lets say 1400 ft and you engine fails just after your company's accelaration height of 400 ft ... You most probably have to reselect toga thrust / ( lever already in clb detent -> flx thrust not available anymore) and open clb with your present speed selected and present config until reaching 1500ft...
(this is the only point that you should discuss about with your managers about your sop
)
In your fmgs to page insert
1950/1950(thr red/acc) and 2080 (eng out acc altitude )
If your engine failure occurs between v1 and 1950 ft .... You should better be safe side and delay accelaration until reaching 2080ft
Don't forget in case of eng failure the lvr clb is not displayed on your fma And your vertical mode will frozen in srs (until YOU change it by selecting vs0,op clb etc)so your 1950 ft should be disregarded if your engine out altitude (reminder purpose only-not affecting your autopilot/fd mode)is higher(2077)
