Rev.B15
Pg. 21 di 80
Connection to the Profibus fieldbus network
Profibus cable specifications
Connector for fieldbus
TZ-M4M12-B
to be
connected to
BUS OUTPUT
.
Connector for filedbus
TZ-F4M12-B
to be
connected to
BUS INPUT
.
As per “Interconnection Technology Version 1.4” of January 2007 published by the
PNO, the shield of the shielded cable must be connected to connector metal case as
indicated above, and not to the pin 5 of the same.
Profibus network termination
Description
Features
Impendence
100…130 Ohm
Capacity
< 30pF/m
Resistance
< 110 Ohm/Km
Diameter
< 0,53mm
Section
> 0,22mm²
Termination TZ-M5M12-BT is to be
connected to the
BUS OUTPUT
connector.
A Profibus network must be terminated at each end of it. The master and
the last device on the network must be terminated in order to eliminate
reflections, even if only 2 nodes are used.
Termination specifications:
•
2 x 390 Ohm
•
220 Ohm
•
1% Metall film
•
¼ Watt