3WL air circuit breakers
3.2 COM15 module and BSS module
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
37
RJ45 connection
The figure below shows the COM15 from behind. It shows the RJ45 connection for the
external CubicleBUS modules. If no external CubicleBUS module is connected, the bus must
be terminated with the terminating resistor supplied.
Figure 3-6
COM15 with RJ45 connection for CubicleBUS modules
Connection of the CubicleBUS nodes
The four black cables that are brought out of the COM15 must be connected to terminal strip
X8. The COM15 is connected with the nodes on the CubicleBUS in the circuit breaker in this
way.
Table 3- 3
Terminal strip connection X8 between COM15 and CubicleBUS nodes
Meaning
Position and printing on the cable
CubicleBUS -
X8:1
Cubi
X8:2
+24 V DC
X8:3
Ground 24 V DC
X8:4
3.2.3
PROFIBUS installation guideline
The COM15 must be installed in accordance with the installation guidelines for PROFIBUS
DP published by PROFIBUS International (PI, www.profibus.com). Of primary importance
here are equipotential bonding and shielding.