Rockwell-automation T3468A ICS Regent DC Guarded Digital Output Module Uživatelský manuál stáhnout pdf (Strana 7)

(T3461A, 62A, 68A) DC Guarded Digital Output Modules

6019

Mar

Blown Fuse Indicators

The red BLOWN FUSE indicators switch on when the

adjacent front panel fuse opens. If all four fuses in a group

have opened, all of the BLOWN FUSE indicators will switch

off and the condition will be annunciated by the module’s

FAULT indicator, which will be on.

Applicatio

Guarded digital output modules provide a suitable interface to

safety

critical output devices. These safety

critical devices

typically include solenoids, actuators, or other process

interlock outputs. Guarded output modules can be used for

fail

safe or fault tolerant operation.

Fail

Safe Configuration

As shown in Figure

, 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

afe configuration, removing the module disables all

outputs.

Figure

. Fail

Safe Configuration.

Fault Tolerant Configuration

For fault tolerant operation, two Guarded modules are

connected in parallel as shown in Figure

. In this

configuration, operation continues even if one module fails.

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Rockwell-automation T3468A ICS Regent DC Guarded Digital Output Module Uživatelský manuál Strana 7