Profibus Bus Connection Diagram - INVT Goodrive 300 Operation Manual

inverters
Goodrive300
Transmission rate (kbps)
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 1 kM.
A.2.6.5 Profibus bus connection diagram
Above is "terminal" wiring diagram. Cable is a standard Profibus cable consisting of a twisted
pair and shielding layer. The shielded layer of Profibus cable on all nodes is directly
grounded. Users can choose the best grounding method according to the situation.
Note:
Make sure that signal lines do not twist when connecting all stations. Shielded cable should
be used when system runs under high electromagnetic interface environment, which can
improve electromagnetic compatibility (EMC).
If using shielded braided wire and shielding foil, both ends should be connected to ground.
Using shielding area should be large enough to maintain a good conductivity. And data lines
must be separated from high-voltage.
Stub line segment should not be used when transmission rate more than 500K bit/s, The
A-wire (m)
100
A-wire (m)
135~165
< 30
110
0.64
2
) > 0.34
260
Appendix A
B-wire (m)
-----
B-wire (m)
100~130
< 60
--------
> 0.53
> 0.22