Installation
Electrical installation
22
Lenze · Decentralised frequency inverter 8400 motec (AS-Interface option) · EDS84DMOTASI EN 5.0 - 02/2019
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5.2 Electrical installation
5.2.1 Bus cable specification
The AS-i bus cable serves as ...
•external Voltage supply
( 24) of the Communication Unit;
• Data transmission from and to the inverter.
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.
"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.
Note!
Only use cables that meet the listed specifications.
Range Values
Cable type Two-wire cable, insulated and shielded
Core cross-section 1.5 mm
2
Cable resistance < 90 mΩ/m, (f = 3 ... 20 MHz)
Inductance 400 ... 1300 nH/m
Capacitance per unit length < 80 pF/m
Electrical master value < 5 μS/m
Surge impedance 70 ... 140 Ω
Group runtime < 8.3 ns/m
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