I/O
module/IOTA
Feature/function
Analog Input
w/HART
l Extensive self-diagnostics
l Optional redundancy
l HART capable, multi-variable instruments
l Fast (50ms) loop scan
l PV protection through a broken-wire detection diagnostic
l All channels configured for 4-20 mA inputs can detect broken
field wires. A soft failure alerts the maintenance staff for
corrective action.
l Non-incendive field power
l Non-incendive power for 4-20 mA loops is provided with no
external marshalling.
Analog Input
non-HART
l Extensive self-diagnostics
l Optional redundancy
l Fast (50ms) loop scan
l Non-incendive field power
Analog Output
w/HART
l Extensive self-diagnostics
l Optional redundancy
l HART capable, multivariable instruments
l Safe-state (FAILOPT) behaviors
l Each channel can be configured to HOLD, LAST, VALUE, or
SHED to a SAFE VALUE.
l Output read back checking of current delivered to the field
l PV protection through a broken-wire detection diagnostic
l Each channel can detect broken field wire. A soft failure alerts
the maintenance staff for corrective action.
l Non-incendive output
l No external marshalling required to support the 4-20ma loop,
and still provides for channel power protection.
Analog Output
non-HART
l Extensive self-diagnostics
l Optional redundancy
