How long does it take to switch DPU’s back to manual control and vise versa?
If I would have to guess more than likely about as long as it takes to set them up for a Consist.
To take them out of DP and put them back in conventional only takes a minute or so
putting them into DP mode takes a little longer, a full brake test on the train is part of
the set-up procedure . We used to avoid the brake test part by linking them up before
adding them to the train, the brake test part was almost instantaneous with just the
locomotives involved (the train would have been on yard air and received a class 1
test)