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Betriebsanleitung/Operating manual
F5308/F53C8/F53S8
Electrical connection
7
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 the coupling in of interference, please note the following:
• Always use shielded, low-capacity measuring cables (all tecsis
cables meet these requirements).
•
• Do not route the measuring cable parallel to high-voltage current
The shielded measuring cable should be grounded on both sides.
and control cables.
• Avoid leakage fields from transformers, motors and contactors.
• The load pin, the amplifier and the display unit must not have multi-
ple earths. Attach all equipment to the same protective conductor.
The plug or cable connection assignments can be found on the name
plate (Fig. 1 to 3, p. 33-34). Unless otherwise agreed, the
following assignments are used as standard.
Abbreviations for connection
UB+
0V/UB-
UR+
UR-
36
power supply +
power supply -
power supply + for Relay
(SIL-Shift)
power supply - for Relay
(SIL-Shift)
Abbreviations for colors
BN
WH
BU
BK
BD_BE 991 d
brown
white
blue
black
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