5 Installation
5.3 Interfaces
HMI/PLC XV-102
08/2016 MN04802004Z-EN
www.eaton.com
47
Wiring
Screened twisted pair cables, cable type A (in accordance with Profibus standards IEC/EN 61158
and IEC/EN 61784) must be used.
Tab. 21 Cable specifications
The maximal baud rate depends on the cable length
Tab. 22 Relationship of cable length / baud rate (for cables compliant with cable type A of the Profibus standard IEC/EN 61158
and IEC/EN 61784)
Cable specifications
Rated surge impedance
150
Permissible surge impedance
135…165
Capacitance per unit length
< 30 pF/m
Loop resistance
< 110
/km
Core cross section
0.34 mm
2
(22 AWG)
Cable length
Max. baud rate
200 m
1500 kbit/s
400 m
500 kbit/s
1000 m
187.5 kbit/s
1200 m
93.75 kbit/s
When preparing the cables, ensure that there is a low-resistance connection between
the cable screen and the connector casing (
