Greenheck S73 Series - Manual (Page 9)

c
Orrect
c
OnnectiOns
To eliminate this “BACK FEEDING PARALLEL” driv-
ing, we suggest separate contacts for each actuator.
If we redraw the diagram for the #1 actuator having
reached its fully open travel position and having tripped
its open travel limit switch. You can see that the #2
actuator would still run on, until it reached its fully open
position. The #2 actuator when running open can not
“BACK FEED”, the first actuator’s closed travel motor
winding (as it did in G). on the previous page).
(Shows current flow)
BRAY Series 73 Electric Actuator
Operation and Maintenance Manual
7