5 YDIA Discrete Input Modules
5.1 Mark VIeS YDIA Discrete Input Pack
The Discrete Input (IS420YDIAS1B) I/O pack provides the electrical interface
between one or two I/O Ethernet networks and a discrete input terminal board. The
YDIA contains a common processor board and an acquisition board specific to the
discrete input function. The YDIA I/O pack accepts up to 24 contact inputs and
terminal board specific feedback signals, and supports three different voltage levels.
System input to the pack is through dual RJ-45 Ethernet connectors and a three-pin
power input. Discrete signal input is through a DC-37 pin connector that connects
directly with the associated terminal board connector. Visual diagnostics are provided
through indicator LEDs.
TBCI Contact Input
Terminal Board
YDIA
Discrete Input
Contact Inputs
(24)
Processor board
Application board
One,
two, or
three
YDIA
packs
Single or dual
Ethernet cables
ENET1
ENET2
External 28 V dc
power supply,
or use
on-board power
ENET1
ENET2
ENET1
ENET2
28 V dc
28 V dc
YDIA Discrete Input Modules GEH-6855_Vol_II System Guide 115
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