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W&T
Digital-I/O Extender Sets
Subject to error and alteration
Digital-I/O Extender Set, Model 17633
Function
The W&T Digital-I/O Extender Set, Model 17633 enables
sending of digital I/O signals bi-directionally over a glass
fiber optic cable.
The set consists of two digital-I/O <> glass fiber optic
converters and supports two I/O channels in each direction.
A special communications protocol between the converters is
used for transmitting over the glass fiber optic cable, so that
the converters can only be used in pairs.
Power Supply
The signal converters are powered by an integrated switched
regulator. This regulator has a variable input voltage range
and enables powering of the converters by using any DC or
AC voltage between 12 and 24 volts. The supply voltage is
reverse polarity protected and can be implemented on the
underside of the converters using the included plug-in 2-pole
screw terminal.
Galvanic Isolation
Within the signal converters the I/O connections are
galvanically isolated from the supply voltage up to min. 1000
V using a DC/DC converter. The level of galvanic isolation
between the two converters and thereby between the I/O
terminal points is determined primarily by the length of the
glass fiber optic cable used.
