Thanks Robert:

The way Robart explains the circuit is that the gear will always shut down when the "amp -out" circuit sees an "peak" caused by an obstruction jamming the gear, or by the gear reaching their travel limit. This causes the gear to stop automatically and allows you to reverse direction. It is the normal mode of travel limit in that the amp peak circuit trips the actuator motor off when the travel limit is reached during normal operation.

I was only concerned with the "peaking" causing something funky in the batt share if it the amp peaks were to affect the voltage. Safety wise, Robart has the amp out circuit set to a safe level for our normal servo leads as they do not specify anything special. They do have options to run the gear on the receiver battery or dedicated battery. .

I asked this same question to Robart as well. They had not run into this question before and did not know exactly what the power expanders were monitoring. I think the separate battery would be the safe way to go, but I just want to be sure it is necessary.

It appears nobody has experience in this type of installation yet. I know this gear is new.

Thanks for your quick response and great products!

Neal