Diagram Bus Connection; The Profibus Option Card - Danfoss VLT 5000 Operating Instructions Manual

Diagram bus connection

It is important to terminate the bus line correctly.
Mismatches of the impedance may lead to reflections
in the line and cause incorrect transmissions.
- The PROFIBUS option card is equipped with a
suitable termination which can be activated by
the switches 1 and 2 at the switch block S1
directly to the right above the terminal block
MK 1B. The bus termination is active when the
switch is in the "ON" position.
NB!:
The switches must never be set in
opposite directions. Both switches must
be set to ON or OFF.
- Most masters and repeaters are equipped
with their own termination.
- If an internal termination circuit in the form of
three resistors is connected to the bus line, a
5 V direct voltage must be used. Attention:
please make sure that it is voltaically separated
from the power supply cable.
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VLT® 5000/ 5000 FLUX/ 6000 HVAC/
8000 AQUA PROFIBUS
MG.90.G1.02 - VLT is a registered Danfoss trademark