Rockwell Automation T7488/T7488A ICS Regent+Plus Monitored Guarded Output Modules - Manual (Page 2)

Monitored Guarded Output Modules (T7481/81A, 84, and 88/88A)
2 (Issue 2)
Industrial Control Services
output. Extensive fault detection and redundant critical
circuits ensure that each module operates in a fail-safe
manner.
Two monitored Guarded output modules can be connected in
parallel to obtain fault tolerant control of power to loads. In
this parallel module configuration, either module can be
removed and replaced while the other Guarded module
continues to control the loads without interruption.
Module Operation
A block diagram of a typical monitored Guarded digital output
module is shown in Figure 1.
Figure 1. Block Diagram of a Monitored Guarded Digital Output Module.