INVT Goodrive 300 Operation Manual page 264

inverters
Goodrive300
Repeater
Up to 32 stations can be connected to each segment (master station or subsidiary stations),
the repeater have to be used when stations is more than 32. The repeaters in series are
generally no more than 3.
Note: There is no repeater station address.
A.2.6.4 Transmission rate and maximum distance
Maximum length of cable depends on the transmission rate. The Table below shows the
relationship between transmission rate and distance.
Transmission rate (kbps)
9.6
19.2
93.75
187.5
500
1500
12000
Transmission line parameters:
Transmission rate (kbps)
Impedance (Ω)
Capacitance per unit length(pF/m)
Loop Resistance (Ω/km)
Core wire diameter (mm)
Line-core cross-section (mm
Besides shielding twisted-pair copper wires, PROFIBUS can also use optical fiber for
transmission in an electromagnetic interference environment to increase the high-speed
A-wire (m)
1200
1200
1200
1000
400
200
100
A-wire (m)
135~165
< 30
110
0.64
2
) > 0.34
263
Appendix A
B-wire (m)
1200
1200
1200
600
200
-----
-----
B-wire (m)
100~130
< 60
--------
> 0.53
> 0.22