INVT Goodrive 310-UL Series Operation Manual page 223

GD310-UL series VFD
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)
19.2
93.75
187.5
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 transmission distance there
are two kinds of fiber optical conductors, one is low-cost plastic fiber conductor, used distance is less
than 50 meters, the other is glass fiber conductor, and used distance is less than 1kM.
Repeater
9.6
500
2
)
Terminal
Repeater
A-wire (m)
1200
1200
1200
1000
400
200
100
A-wire (m)
135–165
< 30
110
0.64
> 0.34
-215-
Expansion card
B-wire (m)
1200
1200
1200
600
200
-----
-----
B-wire (m)
100–130
< 60
--------
> 0.53
> 0.22