
12 The Interface Solution Experts
TRZ
Programming theTRZ when a
Device Description is Available
With the TRZ connected as shown in either Figure 2
or 3, apply power and turn the communicator on.
After a brief self-test, the communicator will show
the main menu and identify the unit as a TRZ.
This section contains the instructions for
programming the TRZ using a HART Communicator
that has been programmed with a TRZ HART Device
Description (see page 11). If your communicator
doesn’t have a TRZ Device Description, skip to
“Programming the TRZ when a Device Description is
NOT Available” on page 15.
Figure 6 on page 11 shows an overview of the
programming menus for the configuration process.
This figure will be used frequently.
Displaying the Current Process Value
The Main Menu displays the current process value
(i.e. °C in a temperature application), the lower and
upper range values, the actual output current, and the
output current as a percentage of output span.
Configuring the TRZ’s Input
In the “Input Setup” Menu, you can program the type
of sensor being used, the sensor’s upper and lower
range values, a damping time between 0 and 15
seconds, the number of input wires, and the amount
of resistance in the wires connecting the TRZ to the
input.
Damping smooths input fluctuations by taking an
average over a user-programmed time period, and
using this value for the TRZ output. The damping
time can be set between 0 and 15 seconds.
To configure the TRZ input:
1. Highlight DEVICE SETUP in the Main menu
and push the right arrow.
2. Highlight INPUT SETUP and push the right
arrow.
3. Highlight SIGNAL CONDITION and push the
right arrow to show the current settings for
sensor type, upper and lower sensor values,
and the minimum span. Use the left arrow to
return to the Input Setup menu.
4. Highlight SENSOR TYPE and push the right
arrow to select the sensor type and
parameters. Enter the input type and
parameters and push ENTER to return to the
Input Setup menu.
Note:
After the sensor type and parameters are
selected, the TRZ defaults to the range
listed in Table 1. If you wish to modify
the range, see steps 5 and 6. Otherwise,
skip to step 7.
5. Highlight LRV and push the right arrow to
change the lower range value. Input the new
value and push ENTER to return to the Input
Setup menu.
6. Highlight URV and push the right arrow to
change the upper range value. Input the new
value and push ENTER to return to the Input
Setup menu.
7. Highlight DAMP and push the right arrow to
enter a damping time between 0 and 15
seconds. Input the value and push ENTER to
return to the Input Setup menu.
8. Highlight WIRE NO. and push the right arrow to
enter the number of wires used to connect the
TRZ to the input. Input the number and push
ENTER to return to the Input Setup menu.
9. Highlight CABLE R and push the right arrow to
enter the amount of resistance present in the
wire. Input the value and push ENTER to
return to the Input Setup menu.
10. Push HOME to return to the Main Menu.
Alternatively, the TRZ Device Description is avail-
able from any service center that is approved to up-
grade universal HART communicators. Consult the
Interface Solution Center nearest you for locations.