Dynisco TX180, Инструкция по установке и эксплуатации

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6.2 for further information on setting Failsafe Reporting.
Once the proper sensor is connected the fault message on the display should clear and the
transmitter output should go to the proper value.
Both LCD displays take full advantage of the precision of these transmitters. 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 transmitter
identification. The LCD continues to display the measured temperature even if it is beyond the zero
and full scale limits set for the analog output.
If you should desire to change the sensor input or to re-range or reconfigure the transmitter, please
refer to Sections 4, 5 or 6 of this manual, which show you how to set-up the transmitter with the LI-1
or LI-2 displays.
4. C
ONFIGURATION
U
SING THE
LI-2, T
WO
-L
INE
D
ISPLAY
To configure a transmitter using the
DISPLAY MODE
, either the LI-1 or LI-2 local LCD display is
required. These displays are available as an option and can be plugged into the top of the TX180
transmitter. 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 LI-1 or LI-2 Display / Keyboard are not purchased at the same time as the
transmitter, the one piece display design allows for easy field installation by simply plugging the LI-1
or LI-2 into the top of the transmitter.
4.1 E
NTERING THE
D
ISPLAY
M
ODE
To start the
DISPLAY MODE
, first connect the transmitter to an appropriate DC power supply.
Typically a 24VDC supply is connected with the + side of the power supply connected to the
transmitter’s output “+” terminal and - side of the power supply connected to the transmitter’s output
“-” terminal. A sensor may be connected to the transmitter’s input terminals, but this is not required
for setting up the transmitter.
With the standard factory set-up and no sensor connected, the LI-2 display will give the following
indication:
<0% 100%>
FAIL
<0% 100%>
SAFE