The field side of the isolation barrier is powered entirely by the customer. Two independently fused positive rails are provided so that the limit/home group and the general-purpose group can be fed from separate supplies if wanted; they share one return.

Pin

Name

Function

Rating

J7.29

DI V+

Field supply for the general-purpose inputs and the outputs

12–24 Vdc, 26.4 V max, fused 0.25 A

J7.3

LIM V+

Field supply for the limit/home inputs

12–24 Vdc, 26.4 V max, fused 0.25 A

J7.30

FIELD GND

Field ground, common return for both groups and for the outputs

—

Isolation depends on the field supply. The field domain is isolated from the logic domain only if the field supply is itself isolated from the logic supply. Use a separate supply, or an isolated output of the same supply. If the two share a return, the barrier is bypassed and no isolation remains.