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6 Power Distribution Modules
6.1 Power distribution (power feeding modules)
Power Feeding modules distribute the required 24 VDC or 120/230 VAC field voltage to the I/O
modules. They are necessary when groups of modules with different potentials are planned within
a BL20 station, or if the rated supply voltage cannot be guaranteed. The adjoining power supply
module and modules to the left are potentially isolated.
By using Power Feeding modules, it is not necessary to distribute power separately to each
BL20 I/O module.
Power Feeding modules are available in slice design. They are mounted on to base modules with
tension clamp or screw connections. The dusty grey color of the base modules for Power Feeding
modules clearly distinguishes them from the base modules designed for BL20 I/O modules.
LED displays
Error signals and diagnostic statuses are indicated via LEDs on the module. The corresponding diag-
nostic information is transmitted to the gateway via diagnostic bits.
Module overview
BL20-PF-24VDC-D
BL20-PF-120/230VAC-D
NOTE
Power Feeding modules cannot be used to distribute 5 VDC to BL20 gateways.
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