Rockwell Automation T3480 ICS Regent Guarded Analog Output Modules - Manual (Page 8)

Guarded Analog Output Modules (T3480)
8
Industrial Control Services
Figure 4. Fault Tolerant Configuration.
Field Wiring
Field wiring terminal blocks on the I/O chassis are used to
connect power sources and loads to the module. The terminal
blocks are located directly above and below the slot where the
module is installed. Each terminal block consists of ten #6
wire clamp screw terminals capable of holding two 12 AWG
wires. Figure 5 shows the proper field wiring for a single
module and Figure 6 shows the field wiring for fault tolerant
modules connected in parallel.
Two terminals are provided for connecting to each output load
device. All six analog output channels must be connected to a
load device or else the output circuit testing will fail. For each
unused spare output channel, short its two output terminals
together by installing a wire across the appropriate terminals
on the I/O chassis.
Each module has one-pair of terminals for connecting an
external 24 VDC field power supply to power the field-side D/A
circuits and output current signals. Output circuit testing
requires the presence of this field power. If the field power is
disconnected, output testing fails and a module fault is
indicated.
When two guarded analog output modules are used in a fault
tolerant configuration, the A and B terminals must be cross
strapped between the two modules as shown in Figure 6.
Important!