17
PW15AHi
A2526-4.0 en/de/fr
HBM
Connection to a wide‐ranging supply network is not permitted as this often
causes interfering voltage peaks to be coupled into the transducer. Instead,
a local supply must be provided for the PW15AHi load cells (even when
grouped).
The supply voltage must be insulated from the shield potential. A connection
from GND to the housing is not required, but the potential difference must
be max. 10 V.
Should it be necessary, a separate cable can be used to establish potential
equalization between the PW15AHi and the (PC/PLC) master (grounding
concept). The cable shielding must not be used for this potential
equalization.
The power supply ground wire (GND) is also used as the reference potential
for the interface signals and the control input.
In layouts with several transducers, the supply can be laid together with the
RS‐485 bus lines in a 6‐pin cable (with HBM junction boxes, for example).
Ensure that an adequate wire cross‐section is provided, as some cable
sections will conduct the supply current for all the connected PW15AHi load
cells.