Rockwell-automation T3411 ICS Regent Monitored Digital Input Modules Uživatelský manuál stáhnout pdf (Strana 15)

Monitored Digital Input Modules

(T3411)

6031

Mar

Figure

. Line Moni

toring, Single Switch Connected to

Redundant Modules.

With the line monitor device installed, the input voltage, V

has four possible states as represented in Table

. When the

input module reads the input, the reference voltage, V

ref

, is

set to the values shown in Table

to detect the state of the

field input and wiring.

Table

. Input States and Reference Voltage Thresholds.

ref

Threshold

Voltage

with Line

Monitor

with

out

Line Monitor

Stuck

on Test

32 Vdc

24 Vdc

Wire Open

Switch Open

Open Circuit

20 Vdc

16 Vdc

Switch Open

On/Off

12 Vdc

8 Vdc

Switch Closed

Short Circuit

4 Vdc

0 Vdc

Wire Short

Switch Closed

Stuck

Off Test

5 Vdc

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 25 26

ICS Regent 1
Module Operation 2
Testing and Diagnostics 3
Front Panel Indicators 5
Application 8
Field Wiring 10
Industrial Control Services 12
Configuration 17
Programming 20
Maintenance 23
Safety Considerations 23
Specifications 24
(T3411) 26

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