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INTERBUS Loop
6057AC01 1-37
1.8.8 Initial Startup
At initial startup, before connecting the installation local bus to the BK
module make sure that the installation local bus and actuator supply are
correctly installed.
Connecting and
testing the
installation local bus
• Mount the modules on a grounded mounting surface.
• Connect all modules with the installation local bus cable without
connecting the BK module.
• Apply 24 V to one side of the installation local bus (A or B in
Figure 1-31). Do not apply the actuator supply yet!
Figure 1-31 Installation local bus connection
• Check whether the DIAG LED on each module is flashing at 0.5 Hz
when the voltage is present.
If not, check the connection from the first device onward on which the
LED is not flashing.
Mixing up the polarity of the installation local bus cable between standard
modules does not affect the function. The designations 1 and 2 of the splice
rings can be ignored.
Ensure the correct assignment between the last INTERBUS Loop module
and the BK module.
IBSL BOX 24 DO 2/2 M12-2AIBSL BOX 24 DO 2/2 M12-2A
IBSL BOX 24 DI 2/2 M12
IN
OUT
IN
OUT
IN
OUT
24V
IN
OUT
IN
OUT
24V
IN
OUT
A
B
DIAG
DIAG
DIAG
5109B707
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