Rockwell-automation T7411F ICS Regent+Plus Monitored Digital input Mod Manual de usuario descargar pdf (Pagina 19)

Monitored Digital Input Modules

, Type F (T7411F, T7418F)

7027

Mar

short or open circuit (or there is no line monitor device

installed) the Fault Name status is off.

The status of the Name and Fault Name input variables are

summarized in Table

for the various field input conditions.

Table

. Input Status for Field Input Conditions.

With Line Monitor Device

Installed

Without Line Monitor

Device Installed

Field Input

Condition

Name

Fault Name

Name

Fault Name

Switch Open

OFF

Switch Closed

OFF

Open Circuit

OFF

Same as Switch Open

Short Circuit

OFF

Same as Switch Closed

Programming Dual Fault Tolerant Monitored Inputs

To program fault tolerant configurations using dual

monitored input modules, ladder logic is used to check the

status of the inputs and the system control relays (that report

a faulted I/O module) and provide a voted input value. Two

examples are shown below.

ormally Energized Inputs

Figure

shows a ladder logic rung that would be suited for

normally energized inputs that de

energize to trip.

Figure

. Dual Voting for Normally Energized Inputs.

In this example, IN1A and IN1B represent the input

variables from two redundant monitored input modules.

IO01U01 and IO01U02 are the system control relays that

report a fault for the monitored input modules (one installed

in slot 1 of chassis 1 a

nd the other in slot 1 of chassis 2). The

variable IN1VOTE is a shared control relay that will

1 2 ... 14 15 16 17 18 19 20 21 22 23 24

Comentarios a estos manuales

Sin comentarios

Rockwell-automation T7411F ICS Regent+Plus Monitored Digital input Mod Manual de usuario Pagina 19

Comentarios a estos manuales

Relacionado con productos y manuales para Equipo Rockwell-automation T7411F ICS Regent+Plus Monitored Digital input Mod