Reduced installation time and expense: The DeltaV system’s
S-series I/O interfaces are designed for quick assembly and
error proof maintenance. All carriers snap onto T-DIN rails and
interfaces snap into the I/O slots without the use of any tools.
Each I/O interface has a separate wiring terminal block,
which connects field wiring to the interface. The I/O card can
easily be removed without touching the I/O wiring on the
terminal block. Some I/O cards can also use the fused terminal
block, which is equipped with in-line fuses that can be pulled
to isolate power to the field circuit.
Termination Fault Detection is a feature that only works within the following cards:
DI Plus, 32-channel, 24V DC Dry contact.
DO Plus, 32-channel, 24V DC High-Side.
Switchover of a redundant I/O card is completed within
two scans of the I/O bus. Make-before-break contacts ensure
digital field instruments remain powered and the process
is undisturbed. Analog output signals are briefly driven by
both cards for <5 ms during switchover of the card.
Hardware alerts automatically report hardware integrity errors
for both the primary and secondary cards. Any event that
causes a switchover is also reported automatically through the
system hardware alerts and is logged in the Event Chronicle.
The following traditional I/O Plus cards require v13.3.1 or higher Software:
AI Plus, 4-20 mA HART, 16 Channels.
AO Plus, 4-20 mA HART, 16 Channels.
DI Plus, 32-channel, 24V DC Dry contact.
DO Plus, 32-channel, 24V DC High-Side.
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