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2020/09
13 Potential Distribution Modules
The potential distribution modules provide 10 or 16 terminals for potential distribution. The use of
potential distribution modules allows the transmission of 24 VDC from UL or the GND potential of
UL without the use of further terminal blocks.
The potential distribution modules have to be considered for the maximum station extension of
BL20 with a maximum number of 74 modules. A maximum of two potential distribution modules
can be mounted next to each other. At least one active electronics module (e.g. BL20-E-8DI-24VDC-
P) has to follow the two potential distribution modules.
13.1 Module overview
Fig. 298: Potential distribution modules – application example
Module Function
BL20-E-10UL 10 Push-in contacts for distributing the 24 VDC from UL
BL20-E-10GNDL 10 Push-in contacts for distributing the GND potential from UL
BL20-E-16UL 16 Push-in contacts for distributing the 24 VDC from UL
BL20-E-16GNDL 16 Push-in contacts for distributing the GND potential from UL
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