VEGA KFD2-BR-Ex1.3PA.93 Segment coupler for PROFIBUS PA User Manual

Composition

098

G.xm

003

-03-

Subject to reasonable modifications due to technical advances.

Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com

KFD2-BR-Ex1.3PA.93

Segment coupler

Power supply

Power rail

green

red

yellow

PROFIBUS PA

[EEx ia] IIC

Protocol conversion

PROFIBUS DP

Saf

e area

Hazar

dous area

Bus termination

Screen/P

Bus termination

Screen/FE

58 59 60

CNTR-P

DGND

IEC 61158-2

RS 485

RxD/TxD-P

RxD/TxD-N

Composition

Segment coupler for intrinsically safe
PROFIBUS PA segment

• PROFIBUS DP, EN 50170/2, RS

485: 93.75 kbit/s

• PROFIBUS PA [EEx ia] IIC;

PROFIBUS EN 50170/2; IEC 61158-
2: 31.25 kbit/s

• Master independent
• Up to 10 Ex devices can be

connected to the PA segment

• Supply via PA bus
• 24 V DC rated operational voltage
• Removable terminals and Power

Rail

• EMC acc. to NAMUR NE 21

The segment coupler couples an intrin-
sically safe PROFIBUS PA segment to
a PROFIBUS segment using RS 485
transfer technology in accordance with
EN 50170. The Profibus is standard-
ised in EN 50170/2.
The communication behaves transpar-
ently. The protocol is transferred un-
changed, therefore the segment cou-
pler can operate with each PROFIBUS
protocol and is not parameterised.
The baudrate of the intrinsically safe
PROFIBUS PA segment is 31.25
kbits/s in accordance with IEC 61158-2
The PROFIBUS segment with RS 485
transfer technology has a baudrate of
93.75 kbit/s. This baudrate is particular-
ly suitable for mixed operation with DP
and PROFIBUS PA stations.
Devices on the PROFIBUS PA are sup-
plied from the segment coupler via the
bus.
Please note!
On the segment coupler no supply volt-
age or other external voltage must be
applied to the PROFIBUS terminals.
For additional information see the PNO
Manual for PROFIBUS PA

*) FISCO:

Function

Output characteristic

I =

Segment coupler for PROFIBUS PA