BECKHOFF BK5200 - Manual (Page 7)

Basic Principles
BK52x0 7
Potential feed terminals for
electrically isolated groups
The operating voltage is passed on to following terminals via three power
contacts. You can divide the terminal strip into arbitrary isolated groups by
means of potential feed terminals. The feed terminals play no part in the
control of the terminals, and can be inserted at any locations within the
terminal strip.
Up to 64 terminals may be located in a terminal strip, including the potential
feed terminals and end terminal.
The principle of the Bus
Terminal
DeviceNet
OVERFL
RUN
BUS OFF
CONNECT
NS
MS
I/O RUN
I/O ERR
B
K
52
00
Bus Coupler for the feed Bus end
BK5200 Bus Coupler terminal
K-Bus
Potential Power
isolation contacts
terminal
DeviceNet Power supply Potential
Bus couplers for various
fieldbus systems
Various Bus Couplers can be used to couple the electronic terminal strip
quickly and easily to different fieldbus systems. It is also possible to
convert to another fieldbus system at a later time. The Bus Coupler
performs all the monitoring and control tasks that are necessary for
operation of the connected Bus Terminals. The operation and configuration
of the Bus Terminals is carried out exclusively by the Bus Coupler.
Fieldbus, K-Bus and I/O level are electrically isolated.
If the exchange of data over the fieldbus fails for a time, counter states are
retained, digital outputs are cleared, and analogue outputs take a value
that can be separately configured for each output when commissioning.