
IF303 - Operation and Maintenance Instruction Manual
1.2
COVER
LOCKING
SCREW
Figure 1.1 - Cover Locking
For convenience there are three ground terminals: one inside the cover and two externals, located
close to the conduit entries.
GROUND
TERMINAL
PROFIBUS PA
AND POWER SUPPLY
TERMINALS
COMUNICATION
TERMINALS
INPUT
TERMINALS (3)
INPUT
GROUND
TERMINAL
Figure 1.2 - Terminal Block
The
IF303
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.
Various types of Fieldbus devices may be connected on the same bus.
The
IF303
is powered via the bus. The limit for such devices is according to the DP/PA coupler
limitations for one bus (one segment) for non-intrinsically safe requirement.
In hazardous area, the number of devices may be limited by intrinsically safe restrictions, according
to the DP/PA coupler and barriers limitations.
The
IF303
is protected against reverse polarity, and can withstand ±35 VDC without damage, but it
will not operate when in reverse polarity.
NOTE
Please refer to the General Installation, Operation and Maintenance Procedures Manual for more details.
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