Connection; Parallel Connection Of Several Weighing Modules - HBM C16M Serie Montageanleitung

C16M...
4

Connection

Strain‐gauge based Ioad cells can be connected to:
• carrier frequency or
• 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.: Wiring code
Electrical and magnetic fields often induce interference voltages in the mea­
surement circuit.
Therefore:
• Use screened low‐capacitance measurement cables only (HBM cables sat­
isfy this criterion).
• Do not route the measuring cable parallel to power and control lines. If this
is not possible, protect the measurement cable, e.g. with steel conduit.
• Avoid the stray fields of transformers, motors and conductors.

4.1 Parallel connection of several weighing modules

Transducers can be wired in parallel by joining the transducer cable core ends
of the same colour. In this case HBM programm offers the junction boxes
VKK... and for use in Ex areas the junction box VKK...EX. The output signal
of these junction boxes is the an average of the single output signals.
A1268-2.1 en/de/es
gy (grey) Sensor line
bk (black) Excitation line (-)
wh (white) Signal line (+)
bu (blue) Excitation line (+)
gr (green) Sensor line
rd (red) Signal line (-)
ye (yellow) Shield connected with housing
9
HBM