Rockwell Automation T7411 ICS Regent+Plus Monitored Digital Input Modules 24VDC - Manual (Page 21)

Monitored Digital Input Modules (T7411)
P D - 7 0 3 1 M a r - 0 6
21
If energize-to-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-to-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
5 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 5 for details).