Technical information
and start-up
BSC624-12V-B
30
6.4.5
AUX filter concept
In order to achieve an ideal cushioning of the line-bound interferences, all pins of the control connector are
filtered to GND by means of SMD capacitors. GND, on the other hand, is connected to the housing with very
low impedance. Thereby, a cross-talk of common-mode interferences from one pin to others can be largely
suppressed.
Pin 2
AUX
is additionally equipped with an X filter. Furthermore, pin 2 AUX is protected against surge and
burst faults by means of a fast PTC fuse as well as a 36 V suppressor diode. The CAN interface is filtered
against common-mode interferences by means of a special choke. All pins of the control connector are
protected against air- or contact-discharged ESD faults. In the case of a CAN and RS232 interface, this is
implemented by using special ESD diodes.
For suppressing high-frequency common-mode interferences, all pins are led through a ferrite core. For
details on the wiring of individual pins, please refer to chapter
7.1 Pin assignment of control connector (device
