Emc Protection - HBM PW29P Series Mounting Instructions

5.5

EMC protection

Important
The load cells with shielded, round cables are EMC‐tested in accordance with
EC directives and identified by CE certification. However, you must connect the
shield of the connection cable on the shielding electronics enclosure in order to
achieve EMC protection for the measuring chain.
Electrical and magnetic fields often induce interference voltages in the
measuring circuit. Therefore:
S Use shielded, low‐capacitance measurement cables only (HBM cables fulfill
both conditions).
S Do not route the measurement cables parallel to power lines and control
circuits. If this is not possible, protect the measurement cable with steel
conduits, for example.
S Avoid stray fields from transformers, motors and contact switches.
S Do not ground the transducer, amplifier and indicator more than once.
S Connect all devices in the measuring chain to the same protective earth
conductor.
To ensure the best EMC protection, the load cell, together with the connection
cable and the subsequent electronics, should be placed in a shielded housing.
PW29P
A03578_02_Y00_00 HBM: public
Electrical connection
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