ABB UFC911B106 programmable control module
Digital Input ModulesThe types of digital input modules
available are:
• 32 channel isolated
24Vdc120Vdc120Vac TMR
• 64 channel isolated 24Vdc Simplex
All TMR digital input modules are
Digital Output Modules
The types of digital output modules
available are:
• 32 channel – supervised 24Vdc
TMR*
• 16 channel – supervised
120Vdc120Vac TMR*
All TMR digital output modules are
equipped with:
• Line monitoring circuits to confirm
energised field loop integrity
• Six element voting circuits for
maximum safety and availability
• Automatic latent fault testing and
diagnostics with 100% coverage (TMR)

100% triplicated to provide maximum
availability.
Each signal path conditions signals
independently and provides full
optical isolation between the field and
the SC300E. A fault on one signal path
cannot propagate to another.
Automatic latent fault testing will
detect “stuck on” states.
Line monitored inputs can be
implemented using analogue input
modules with line monitor termination
cards.
Each of the three micro-controllers
operate two isolated switches per
channel which together form a six
element voting network.
The output voting, testing, feedback
and diagnostics are co-ordinated by the
Triguard SC300E operating system. All
modules provide 2oo3 voted outputs.
Selective redundancy operating in
3–2–1 or 3–2–0 modes is available,
with selectable fall back to fail safe or
retain last value states.
Thermocouple Inputs
Thermocouple and resistance
thermometer inputs are provided by
the use of third party transmitters or
converters mounted in the field or
within the marshalling cabinets. Inputs
from these devices are then handled
by the standard TMR analogue input
modules.