Tecsis F9304, Руководство по эксплуатации, Страница: 22 / 28

Betriebsanleitung/Operating manual F9304
22 BD_BE 9005 a www.tecsis.de
7 Electrical connection
Electrical and magnetic fields often generate interfering voltage in the
measuring circuit. This interference essentially emanates from high
voltage current running parallel to the measuring lines, but can also be
caused by contactors or electric motors operating in the vicinity.
Interfering voltage can also be introduced galvanically. This
particularly occurs in cases where the measuring chain is earthed at
various points that do not have the same potential.
To avoid EMC problems, please note the following:
•
Always use shielded, low-capacity measuring cables
(all tecsis cables meet these requirements).
•
The shielded measuring cable should be grounded on both sides .
•
Do not route the measuring cable parallel to high-voltage current and
control cables.
•
Avoid leakage fields from transformers, motors and contactors.
•
The load cell, the amplifier and the processing or display unit must
not have multiple earths. Attach all equipment to the same protective
conductor.
The plug or cable connection assignments can be found on the name
plate (Fig. 1). Unless otherwise agreed, the following assignments are
used as standard.