Electrical Installation; Bus Cable Specification - Lenze 8400 motec Communications Manual

Installation

Electrical installation

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5.2 Electrical installation

"Inverter Drives 8400 motec" hardware manual
Here you can find detailed information on ...
• the digital and analog inputs/outputs;
• the relay output;
• the integrated safety system (safety option);
• the wiring of the terminals.
Observe the notes and wiring instructions contained in this documentation.
5.2.1

Bus cable specification

The AS-i bus cable serves as ...
• external
• a means for data transmission to and from the inverter.

Note!
Only use cables that comply with the listed specifications.
Range
Cable type
Core cross-section
Cable resistance
Inductance
Capacitance per unit length
Electrical master value
Surge impedance
Group runtime

Tip!
These data are also met by several other standardised cables. An AS-i network can also be
set up with different cables. Multi-core cables (e.g. DeviceNet Thick Cable, DESINA cable/
light conductor) or busbars can be used for the setup of AS-i networks, too. In case of doubt,
consult a specialist in the planning phase.
Prefabricated system cables can be obtained from diverse manufacturers.
Lenze · Decentralised frequency inverter 8400 motec (AS-Interface option) · EDS84DMOTASI EN 4.0 - 09/2013
Voltage supply of the Communication Unit;
( 23)
Values
Two-wire cable, insulated and shielded
1.5 mm
< 90 m/m, (f = 3 ... 20 MHz)
400 ... 1300 nH/m
< 80 pF/m
< 5 μS/m
70 ... 140 
< 8.3 ns/m
2
21