25
58-601 Pulsar
®
Radar Transmitter
2.7
Configuration Using HART
®
A HART
®
(Highway Addressable Remote Transducer)
remote unit, such as a HART communicator, can be used to
provide a communication link to the PULSAR transmitter.
When connected to the control loop, the same system meas-
urement readings shown on the transmitter are shown on
the communicator. In addition, the communicator can be
used to configure the transmitter.
To confirm HART hand-held communications, attach unit
per Section 2.7.1. If communicator reads GENERIC on first
two lines, the HART hand-held does not contain the current
DDs (device description) for the PULSAR Radar transmitter.
Contact your local HART Service Center and specify a
MAGNETROL PULSAR Model RX5 device descriptor.
See HART Revision Table, Section 2.7.3.
2.7.1 Connections
A HART communicator can be operated from a remote
location by connecting it to a remote junction or by con-
necting it directly to the terminal block in the electronics
housing of the PULSAR transmitter.
HART uses the Bell 202 frequency shift key technique of
high-frequency digital signals. It operates on the 4–20 mA
loop and requires 250
Ω
load resistance. A typical connec-
tion between a communicator and the PULSAR transmitter
is illustrated.
2.7.2 Display Menu
A typical communicator display is an 8-line by 21-character
LCD. When connected, the top line of each menu displays
the model (Model RX5) and its tag number or address.
Usually the bottom line of each menu is reserved for soft-
ware-defined function keys (F1–F4). For detailed operating
information, refer to the instruction manual provided with
the HART communicator.
The PULSAR transmitter online menu trees are shown in
the following illustration. Open the menu by pressing the
alphanumeric key 1, Device Setup, to display the second-
level menu.
+
-
Junction
R
L
> 250
Ω
Control
Room
Display
Power
Supply
Current
Meter
HART Version
HCF Release Date
Compatible with RX5 Software
Dev V2 DD V1
July 2003
Version 1.1a–1.2e
Dev V4 DD V1
July 2004
Version 2.0a and later
2.7.3 HART Revision Table
2.7.3.1 Model RX5