26 CompactLogix Packaged Controllers
Publication 1769-IN082A-EN-P - July 2008
HSC Output Wiring
Basic wiring
(1)
of HSC outputs
(2)
is shown below.
ATTENTION
Mis-wiring the embedded HSC to an AC power source or applying reverse
polarity causes damage to the embedded HSC.
(1)
Recommended Surge Suppression - The embedded HSC has built-in suppression which is sufficient for most applications,
however, for high-noise applications, use a 1N4004 diode reverse-wired across the load for transistor outputs switching
24V DC inductive loads. For additional details, refer to Industrial Automation Wiring and Grounding Guidelines,
Allen-Bradley publication
1770-4.1.
(2)
Sourcing Output - Source describes the current flow between the I/O and the field device. Sourcing output circuits supply
(source) current to sinking field devices. Field devices connected to the negative side (DC Common) of the field power
supply are sinking field devices. Field devices connected to the positive side (+V) of the field supply are sourcing field
devices. Europe: DC sinking input and sourcing output circuits are the commonly used options.
+DC
+5/24V dc
-DC
Z1-
B1-
A1-
Z0-
B0-
A0-
OUT
DC COM
OUT 2
OUT 0
Z1+
B1+
A1+
Z0+
B0+
A0+
OUT 3
OUT 1
OUT DC
+5/24VDC
CR
CR
CR
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