4 connecting the bus terminating resistor, Connecting the bus terminating resistor – Lenze E84Dxxxx User Manual
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EDS84DPBUS EN 2.0 - 09/2010
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Communication manual 8400 protec PROFIBUS
Installation
Connecting the bus terminating resistor
4.4
Connecting the bus terminating resistor
The PROFIBUS must be terminated through a bus terminating resistor at the first and last
physical bus station.
Use a terminating resistor plug at PROFIBUS output X32 (M12 pins, 4-pole, B-coded).
Terminating resistor plugs can be purchased at various cable manufacturers (e.g. Lapp or
Turck).
Note!
• If you want to disconnect individual bus stations, ensure that the bus
terminators at the cable ends remain active. Otherwise, the bus may become
unstable.
• Please observe that the bus termination is not active any longer if ...
– the terminating resistor plug was removed;
– the supply of the Inverter Drives 8400 protec has been switched off.