VACON CX
Profibus user’s manual
Page
5
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Vacon Oyj
Phone +358-201-2121
Fax: +358-201-212 205
Parameter
Line A
Line B
Impedance
Capacity
Resistance
Wire gauge
Conductor area
135 ... 165
Ω
(3 to 20 Mhz)
< 30 pF/m
< 110
Ω
/ km
> 0,64 mm
> 0,34 mm
2
100 ... 130
Ω
( f > 100kHz)
< 60 pF/m
-
> 0,53 mm
> 0,22 mm
2
Table 2-2 Line Parameter
Baud rate (kbit/s)
9.6 19.2 93.75 187.5 500 1500
3000-12000
Length line A (m)
1200 1200 1200 1000 400
200
100
Length line B (m)
1200 1200 1200 600
200
-
-
Table 2-3 Line length for different transmission speeds
Following cables can be used (e.g):
Belden
Profibus
Data
Cable
3079A
Olflex
Profibus
Cable
21702xx
Siemens
SINEC L2 LAN cable for profibus
6XV1 830-0AH10
Cabling
Bus Termination
RxD/TxD-P (3)
DGND (5)
RxD/TxD-N (8)
VP (6)
(3) RxD/TxD-P
(5) DGND
(8) RxD/TxD-N
(6) VP
Shielding
Protective
ground
Protective
ground
Station 2
Station 1
RxD/TxD-P (3)
DGND (5)
RxD/TxD-N (8)
VP (6)
Data Line
Data Line
390
Ω
390
Ω
220
Ω
Figure 2-1 Cabling and bus termination
