The Interface Solution Experts
19
TRZ
5.
Highlight POLL ADDR and push the right
arrow to enter the polling address for the
module. It can be any integer between 0 and
15. Input the address and push enter to
return to the HART output menu.
Note:
If the polling address is set to 0, the TRZ
is automatically set to analog mode.
Multiple TRZ’s on the same bus must have
different addresses.
6.
Highlight NUM REG PREAMS and push the
right arrow to display 5. This is the number
of preamble characters sent from the master
to the slave during communication. This
cannot be changed. Push EXIT to return to
the HART Output menu.
7.
BURST MODE and BURST OPTION are not
available on the TRZ.
8.
Press HOME to return to the Online Generic
menu.
Installation
Installation consists of physically mounting the unit
and completing the electrical connections.
Mounting the TRZ
The TRZ fits inside a 30-35mm connection head (such
as the LH1) using captive mounting screws.
Making the Electrical Connections
The connections for the various TRZ inputs are shown
in Figures 2 and 3 on pages 6 and 7. The figures
show a single TRZ unit. If you are using multiple
units, connect them using the connections shown in
Figure 8.
In multi-drop networks, the TRZ’s receiving device is
normally a HART-communicating control system
acting as the HART Primary Master. The control
system uses each TRZ’s individual address to
access real-time process data, sensor diagnostics,
and TRZ diagnostic data. The address is also used
to locate the appropriate TRZ to initiate configuration
and calibration. A HART communicator, acting as
the HART Secondary Master, can be used to simul-
taneously access information from, or transmit
configuration information to the TRZ from anywhere
along the HART digital link.
Make sure that the total loop resistance is at least
250
Ω
so that the 4-20mA signal containing the HART
protocol is not shorted. If loop resistance is less
than 250
Ω
, add a resistor.
Recommended Ground Wiring Practices
Moore Industries recommends the following ground
wiring practices:
• Any Moore Industries product in a metal case or
housing should be grounded.
• The protective earth conductor must be
connected to a system safety earth ground before
making any other connections.
• All input signals to, and output signals from,
Moore Industries’ products should be wired using
a shielded, twisted pair technique. Shields are to
be connected to an earth or safety ground at the
unit itself.
• The maximum length of unshielded input
and/or output signal wiring should be
two inches.
CE Conformity
Installation of any Moore Industries’ products that
carry the CE certification (Commission Electrotech-
nique)
must adhere to the guidelines above in order
to meet the requirements set forth in applicable EMC
(Electromagnetic Compatibility) directives (EN55011,
EN 50082-1, EN50082-2, etc.) Consult the factory for
the most current information on products that have
been CE certified.
Содержание TRZ
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