50
W&T
Digital-I/O Extender Sets
Power Supply
The converters have a common power supply for the interface
electronics and the digital outputs. The electronics is supplied
by an integrated switching regulator with a wide-range input,
so that the device can be operated at any desired voltage
between 8 and 30V DC. AC powering is not possible. The
supply voltage is brought to the front-mounted 6-pin plug-in
panel connector on terminals Vdd and GND.
Galvanic isolation
The amount of galvanic isolation between the two converters
and thereby between the I/O end points is determined solely
by the length of the fiber optic cable and the interface supply
voltage.
Housing and arrangement of the operating elements
The W&T Digital-I/O <> Fiber Optic Converters are housed
in a 45mm wide plastic enclosure for mounting on DIN rails.
All connectors and LEDs are located on the front panel of
the units so that they are accessible when installed. The DIL
switches for configuring the default state upon cable break is
located on the top of the unit and can be set without opening
the housing.
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