12

Catalog E 074441

01/06

Edition 4

www.erni.com

ERbic Profibus Ex i

There is a special Profibus specification for safety-orientated

intrinsically safe applications. Intrinsic safety is achieved by

limiting the energy. At low voltage, this is reflected, among

other things, by a higher current density in the bus line, as the

devices are also supplied with power via the bus line.

With regard to the connector, the main factor is compliance

with EN 50020. For example, defined clearance and creepa-

ge distances and current carrying capacity must be taken into

account. These Ex i connectors have been developed in coo-

peration with ABB and approved for their S900 controller. The

individual connector alone does not require separate appro-

val. This must always be given in conjunction with the system

in accordance with the relevant directives and standards.

Electrical and mechanical characteristics

Interface connector

D-Sub, 9-pin, male

D-Sub male

Class 2

Cable termination

2 x horizontal

1 cable outlet can be sealed with blanking plate

Cable diameter

4.5 mm (0.177”) – 8.0 mm (0.315”)

Cross section of individual conductor

Screw terminal: solid max. 1.5 mm2; stranded max. 1.0 mm2

Termination type

Screw terminal

Data transmission rate

According to bus specification, 12 MBit/s

Temperature range

-20 °C – +70 °C

Permissible humidity

Max. 75 % at + 25 °C, non-condensing

Protection class

IP 40

Housing material

Thermoplast UL94V-1

D-Sub screw

#4/40 UNC, knurled with cross-head

UL approval

UL E84703 *

CE marking

ERbic connectors are passive components and do not need

to be identified with the CE marking according to EU direc-

tives.

* Due to continuous advancement, it is possible that the UL approval of a new version may not have been completed at the time of going

to press.

Pin configuration

Terminal

D-Sub Pin

Signal

B (1)

3

RxD/TxD-P

A (2)

8

RxD/TxD-N

B (3)

3

RxD/TxD-P

A (4)

8

RxD/TxD-N

-

5

GND

-

6

VP (+5V)