DYNISCO SC170 Manual
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In the event of certain signal conditioner failure modes, the indication
changes to
S FAULT
In the event of certain signal conditioner failure modes the indication
changes to
X FAULT
This LCD display takes full advantage of the precision of these signal
conditioners. The digital display of measurement does not include the
small D/A error otherwise present in the analog output. It provides
highly accurate local indication of the measurement, local fault
diagnostics, and signal conditioner identification. The LCD continues
to display the measured variable even if it is beyond the zero and span
limits set for the analog output. The value of this display as a set-up,
calibration and reconfiguration tool may even be greater, as will be
seen in later chapters.
4.0 CONFIGURATION USING THE
TWO-LINE DISPLAY
To configure a transmitter using the DISPLAY MODE, LD-2
local LCD display and the KB-2 two key keyboard are required. The
transmitter can also be purchased with these options already installed.
These inexpensive options make the reconfiguration, or re-ranging of
the transmitter very simple and easy to follow. Without the use of a
calibrator, or any other tools, the transmitter can be set up for a
different sensor, or the new range limits can be set much like one
would set the time on a digital watch.
In the event that the KB-2 or LD-2 keyboard and display are not
purchased at the same time as the transmitter, follow carefully the
field installation instructions supplied with the display to avoid damage
to the transmitter or the display.
4.1
ENTERING THE DISPLAY MODE
To start the DISPLAY MODE, first connect the transmitter to
an appropriate DC power supply. Typically a 24VDC supply is
connected with the + side to signal conditioner terminal (10) and -
side to terminal (9). A series resistor in the loop is optional, but not
required. A sensor may be connected to the transmitter’s input
terminals, but this is not required for setting up the transmitter.
DISPLAY MODE,
DISPLAY MODE,
