Application examples
EL34xx 265Version: 1.5
7.4 Power measurement at a fieldbus station
WARNING
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminal system into a safe, voltage-free state before starting mounting, disassembly or
wiring of the Bus Terminals!
The example illustrates power measurement at three circuits of the fieldbus station. The terminal measures
the:
• Power consumption of the Bus Coupler and E-bus supply
• Power consumption of the power contacts
• Power consumption AS-i over the AS-ipotential feed terminal (EL9520)
NOTE
Note rated current!
In the example, the special type EL3443-0010 is used with an extended current measuring range
(5Amax.). The standard EL3443 type is not suitable for this application example because the current mea-
suring range is too small (1A)!
Fig.166: Application example - power measurement at a fieldbus station
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