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18 Point Multiplex Modules—Multiplex Binary
Binary Input Wired Across the Dry Auxiliary Contacts
A binary input wired across the dry auxiliary contacts (Figure 13) is a
second typical wiring configuration. It also requires no alteration to the
circuit. Set the XBN mode switch to contact. Examples of these loads
include:
•
starters for motors or pumps
•
retrofits where control contacts are already in place
•
high-voltage devices controlled by auxiliary contacts
H
Control
Switch
Figure 13: Wiring Across Dry Contacts
120 V
Device Under Control
H
O
Coil
A
Auxiliary
Contacts
N
OLS
xbn11
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