FNL
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3.5 Connect PROFIBUS PA
NOTICE!The following section is intended for product variant PR
1011085.
The PROFIBUS PA (IEC1158-2) is accessible via clamps 13, 14, 15,
16, which are to be combined in one plug which is coded for the sake
of an unmistakable assignment.
The connector to PROFIBUS PA complies with the specification of
the PNO.
Klemme Funktion
13 is the shield and is connected to the hat rail. It can be
combined with a strain relief which is plugged into the
clamp. This part is included in the package.
14 is the 24 V input of the internal PA power supply.
If internal PA power supply is to be used, this input will
have to be connected to the +24 V output (s. RS232-
Service-Schnittstelle [}16])) via an external wire. If an
external PA power supply is used, this line will remain
open. External power supplies are necessary when
working with a large number of PA subscribers or at
high temperatures. Please, find more details in the part
„Technical Data
15 is the positive signal line to the PA bus (PA+).
16 is the negative signal line to the PA bus (PA-).
The PA bus terminator is installed inside the FNL. The terminator
cannot be switched off. It is important for another terminator to be
installed at the other end of the bus.
Install
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