Electrical connection
Leuze electronic
BPS 301i
44
7.2
MS 301 connection hood with connectors
The MS 301 connection hood features three M12 connector plugs and a Mini-B type USB socket as a
service interface.
Connect connection PWR / SW IN/OUT to the supply voltage or the switching inputs/outputs connection
cable.
Connect the HOST / BUS IN connection to the BUS OUT connection of the upstream BPS with the
interconnection cable.
Connect the BUS OUT connection to the HOST / BUS IN connection of the downstream BPS with the
interconnection cable.
If the current BPS 301i is the last bus participant, connect a terminating resistor to connection
BUS OUT.
7.3
MK 301 connection hood with spring-cage terminals
With the MK 301 connection hood, the BPS is connected directly and with no additional plug. The MK 301
features three cable bushings in which the shielding connection for the interface cable is also located. A
Mini-B type USB socket is used for service purposes.
Connect the connection PWR / SW IN/OUT to the supply voltage or the switching inputs/outputs con
-
nection cable.
Connect the HOST / BUS IN connection to the BUS OUT connection of the upstream BPS with the
interconnection cable.
NOTICE
Shielding connection and functional earth connection!
The shielding connection is done via the M12 connector housing.
Ensure that the functional earth (FE) is connected correctly. Unimpaired operation is only guaranteed
when the functional earth is connected properly. All electrical disturbances (EMC couplings) are dis
-
charged via the functional earth connection.
NOTICE
Bus interruption and bus termination!
The bus is looped through the MS 301, i.e. the bus is not interrupted when the BPS is removed from
the MS 301.
The bus is terminated at BUS OUT via an external mounted terminating resistor; see table 14.3.
If the termination is activated, the downstream bus cable is disconnected.
NOTICE
Cable fabrication!
We recommend against using wire-end sleeves.
NOTICE
Functional earth connection!
Ensure that the functional earth (FE) is connected correctly. Unimpaired operation is only guaranteed
when the functional earth is connected properly. All electrical disturbances (EMC couplings) are dis
-
charged via the functional earth connection.
NOTICE
Bus interruption and bus termination
The bus is looped through the MK 301, i.e. the bus is not interrupted when the BPS 301i is removed
from the MK 301.
The bus is terminated via slide switch T in the MK 301 (see figure 7.1).
If the termination is activated (slide switch T in the ON position), the downstream bus cable is discon
-
nected.