User manual

83
Version 2.4 (10/2011) en
Original instructions
Drum Motor
Options and accessories
Impedance
Encoder input unit handling information for encoder type
BMB-6202-SKF
An NPN encoder ideally should be connected to an interface that:
• can be set to work on NPN signal level
• has an integrated load resistor R
L
If you are in doubt, please contact your PLC/DRIVER partners. They will give you
assistance and they can select the correct input unit that should be used.
Input frequency 5 kHz 10 kHz
Z
ro
in  75j98 110j159
Z
rs
in  70j85 96j150
Z
so
in  180j230 245j400
Z
ss
in  170j200 216j370
Primary side Secondary side
Hint
The internal load resistor R
L
must be specified to enable a load current for the
encoder and the encoder unit to operate trouble-free. If there is a need to connect
the encoder to a PNP input unit, we recommend in this case to use a signal
transformer. (For example “Electronic Terminal Block with Optocoupler“, see
figure below). Otherwise the encoder could be damaged by overload or the
system signal/noise ratio will be reduced.