3WL air circuit breakers
3.5 External CubicleBUS modules
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
61
3.5.1.5 Installation guidelines for the CubicleBUS
The following guidelines apply for installing the CubicleBUS:
● Total length of the CubicleBUS cables max. 10 m.
● Only the pre-assembled cables must be used for connecting the CubicleBUS modules.
● At the last module, the cable must be terminated with a terminating resistor of 120 Ω,
which is included with every module.
● The cables must always be connected from module to module. Spur lines are not
permissible!
● The power supply must be ensured with a 24 V DC power supply with the usual tolerance
and the properties listed in Chapter External current consumption with CubicleBUS
(Page 83).
● If a ZSI module is used, it must be
connected as the first external module.
3.5.1.6 Connection of external CubicleBUS modules
Note
Selecting the power supply
A sufficient external power supply of 24 V DC must be ensured. You can find additional
information on this in Chapter External current consumption with CubicleBUS (Page 83).
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