<2. Connection>
2-1
IM 01C50T01-02EN
2. Connection
2.1 Integral Indicator Display
When Powering On
For models with the integral indicator code “D”, the
display shows all segments in the LCD and then
changes to the displays shown below sequentially.
All segments display
↓
Model name
↓
Communication Protocol
Device revision
↓
Software revision
↓
Process variable display
F0201.ai
2.2 Interconnection between
YTA and HART Configuration
Tool
The HART configuration tool can interface with the
transmitter from the control room, the transmitter
site, or any other wiring termination point in the
loop. To communicate, the tool must be connected
to the signal line in parallel with the transmitter; the
connections are non-polarized. The HART digital
signal is superimposed on the analog signal.
Figure 2.1 illustrates the wiring connections for
direct interface at the transmitter site for the YTA.
The HART configuration tool can be used for
remote access from any terminal strip as well.
USB
FieldMate
Modem
Relaying
terminals
Distributor
Control room
Terminal
board
USB
PC/FieldMate
HART configuration tool
F0202.ai
YTA
Figure 2.1
Connecting the HART Configuration
Tool
2.3 Power Supply Voltage and
Load Resistance
When configuring the loop, make sure that the
external load resistance is within the range in the
figure below.
600
250
0
10.5 16.6
25.2
42
External
load
resistance
R (Ω)
Power supply voltage E (V)
F0203.ai
Digital
Communication
range
BRAIN and HART
R= E–10.5
0.0244
Figure 2.2
