Rockwell-automation T7411 ICS Regent+Plus Monitored Digital Input Modu Manual de usuario descargar pdf (Pagina 21)

Monitored Digital Input Modules

(T7411)

7031

Mar

If energize

trip inputs are used in safety critical

applications, line monitor devices

must be installed at the

field switches. The Fault Name variables must be configured

and line fault

status must be alarmed to plant operations

personnel.

For de

energize

trip inputs, line monitor devices are

recommended in order to detect the difference between a

normally closed input and a shorted field wire.

For additional safety considerations, please refer to the Safety

Considerations section of the Regent User’s Guide.

Specifications

Safetybus Power

0.85 load units

Number of Inputs

16, common power return

Field Power

Voltage:

Current:

15 to 80 VDC

450 mA, maximum

Turn

On Voltage

(default)

12 Vdc

Turn

Off Voltage

(default)

< 12 Vdc

Input Current

5.0 mA, maximum

Turn

On Delay

10 msec, maximum

Turn

Off Delay

10 msec, maximum

Over Voltage Protection

Field Power Terminals:

Input Terminals:

100 Vdc continuous

27 Vdc continuous

Heat Dissipation

8.5 Watts, 29 BTUs/hour

Fusing

None required, internal

resistor limits current to

mA if input short circuit.

Isolation

2500 volts minimum (field

wiring to control logic)

Input Circuit Test Interval

Function of application

program scan time and size

of I/O configuration.

Typically less than 2 seconds

(see page

for details).

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