Rockwell Automation 1746-HSRV SLC Servo Control Module User Manual - Manual (Page 45)

Publication 1746-6.1.2 - July 2000
5-2 Wiring the SLC Servo Module
Wiring Fast Inputs and
Outputs On the termination panel, the +24V DC fast inputs and outputs of the
SLC Servo Module are routed from the connector (37-pin D-shell) to
the fast I/O connector (7-pin pluggable) on the termination panel.
The fast I/O consists of:
•
Fast inputs FI.1 through FI.3
•
Fast output FO.1
•
+24V DC and +24V DC return signals
We recommend 18 AWG wire for wiring fast I/O because it allows two
wires for each connection point. The termination panel accepts 12
AWG wire, but this allows only one wire per point.
Figure 5.1 shows a diagram of typical fast I/O connections. For
electrical dampening, a snubber is required to filter out electrical
spikes. The snubber is used for inductive and comparative loads on
the fast output.
Figure 5.2 and Figure 5.3 shows equivalent fast input and output
circuits.
IMPORTANT
The input device must connect between +24V DC
and the appropriate fast input. Fast inputs are +24V
DC referenced. The fast output is ground-referenced.
The output load must connect between the fast
output and ground.