3. How to Install
3.1.1. Cabling
The Interbus network topology is based on a logical ring structure, implemented in a one-cable structure, making a physical bus structure with a bit rate
of 500 kbps.
Interbus supports networks with a total cable length of up to 12.8 km, with a maximum of 400 meters between nodes.
The maximum cable length is only achievable when the bus cable has the following properties:
Impedance: 120 ohm ±20% @ 64kHz, 100 ohm ±15% @ >1 MHz.
Resistance: < 9.6 ohm/100 m
Capacity: < 60 nF/km
Cross section: minimum 0.2 mm2, corresponding to AWG 25
Cable type: twisted in pairs, 3 x 2 wires
Screening: Copper-braided screen or braided screen and foil screen
Use of the same cable type throughout the entire network is recommended in order to avoid impedance mismatch.
The Interbus option has two network interfaces, one for the incoming bus and one for the outgoing bus. Both are D-sub 9 type.
FC 300 Interbus Operating Instructions
3. How to Install
MG.33.H3.02 - VLT is a registered Danfoss trademark
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