User Manual

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 mm
2
; stranded max. 1.0 mm
2
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)