Rockwell-automation T3464 ICS Regent AC Guarded Digital Output Module Manual de usuario descargar pdf (Pagina 9)

(T3464)

AC Guarded Digital Output Module

6021

Mar

current flows through the neutral wire, so it

is important to

size both the line and neutral wiring to enable them to handle

this fault current.

Modules report a open load fault when an output is

commanded on and no user load is connected. All output

circuits in service must have load connections for proper

diagnostic operation. Unused outputs can be left unconnected

so long as they are never commanded to be on. These modules

do not test for load faults when an output circuit is

commanded off.

Blown fuse detection is independent of user load connec

tion or

output circuit on/off state. However; when operating in a fault

tolerant configuration, the module will report an “OC” (open

circuit) fault instead of a “BF” (blown fuse) fault if both

outputs are on and only one of the two outputs has a blown

fuse.

The module should not be used in applications where a one

time 200 millisecond load bump (turn

on) cannot be tolerated.

Fail

Safe Configuration

As shown in Figure

, the fail

safe configuration uses a single

Guarded module.

In this configuration, the worst case failure

will cause the output to fail to the off state.

In a fail

safe configuration, removing the module disables all

outputs.

Figure

. Fail

Safe Configuration.

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Rockwell-automation T3464 ICS Regent AC Guarded Digital Output Module Manual de usuario Pagina 9