Rockwell Automation T3468A ICS Regent DC Guarded Digital Output Modules - Manual (Page 8)

DC Guarded Digital Output Modules (T3461A, 62A, 68A)
8
Industrial Control Services
In the fault tolerant configuration, a failed module can be
removed and replaced without interrupting operation of the
loads.
Figure 4. Fault Tolerant Configuration.
Fault Tolerant Configuration with Redundant
Actuators
When redundant actuators are installed in the field, the level
of fault protection can be extended to include the field wiring
and actuators. Each actuator should be connected to an
individual guarded output module as shown in Figure 5.
In this configuration continuous operation can be maintained
even if a module, field wiring or load fault occurs.