Datasheet
https://www.phoenixcontact.com/us/produkte/2688048
Nov 14, 20137/8
I/O module-AXL DO 16/3-2688048
Diagram
Maximum energy consumption of the outputs when switching off
inductive loadsThe diagram shows the maximum amount of energy that
may be fed back into the corresponding output groups (outputs 1 to 4, 5
to 8, 9 to 12, 13 to 16) for each switch off procedure when switching off
an inductive load without external freewheeling circuit.The current data
refers to the ohmic DC voltage component of the inductive load.Note:
Restrict freewheeling voltage to a maximum of -15V when using an
external freewheeling circuit. The external freewheeling circuit has no
function in the event of a higher negative voltage.