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
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 m
Ω
/m, (f = 3 ... 20 MHz)
Inductance
400 ... 1300 nH/m
Capacitance per unit length
< 80 pF/m
Electrical master value
< 5
μ
S/m
Surge impedance
70 ... 140
Ω
Group runtime
< 8.3 ns/m
