Connection; Notes On Cable Routing; Connection Technique - HBM U2A Notice De Montage

U2A
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Connection

4.1 Notes on cable routing

Electrical and magnetic fields often cause the introduction of disturbing volta
ges into the measuring circuit.
Please note the following hints:
• Use only screened, low capacitance measuring cable (cable from HBM full
fills these requirements).
• Do not lay the measuring cable parallel to power and control lines. If this is
not possible (e.g. in cable ducts), the measuring cable can be protected,
e.g. by steel conduit.
• The stray fields of transformers, motors and contactors must be avoided.

4.2 Connection technique

Strain gage based load cells can be connected to:
• carrier frequency
• DC measuring amplifiers.
The transducer connection is implemented using the six wire technique. The
connection assignment can be taken from the following illustration.
Wiring code (6 wire−technique)
Fig. 4.1: Transducer with six core cable
A1261−2.1 en/de/fr
gy (grey) Sense
bk (black) Excitation (−)
wh (white) Signal (+)
bu (blue) Excitation (+)
gr (green) Sense
rd (red) Signal (−)
− Shield / filler connected with housing
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HBM