Installation
1-3
Figure 1.3 - Dimensional Drawing and Mounting Positions
The
TT302
uses the 31.25-kbit/s, voltage mode option for the physical signaling. All other
devices on the same bus must use the same signaling. All devices are connected in
parallel along the same pair of wires.
Various types of Fieldbus devices may be connected on the same bus. The
TT302
is
powered via the bus. The limit for such devices is 16 for one bus for non-intrinsically safe
requirement.
In hazardous areas, the number of devices may be limited to 6 devices by intrinsically
safe restrictions.
The
TT302
is protected against reverse polarity, and can withstand ±35 VDC without
damage.
Use of twisted pair cables is recommended. It is also recommended to ground shield of
shielded cables at one end only. The non-grounded end must be carefully isolated.
NOTE
Please refer to the General Installation, Operation and Maintenance
Manual for more details.
TT2EM103.CDR
Summary of Contents for TT302
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Page 11: ...Installation 1 5 Figure 1 5 Tree Topology TT2EM105 CDR ...
Page 12: ...TT302 Fieldbus Temperature Transmitter 1 6 ...
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