HBK SP4M Notice De Montage page 10

4 ELECTRICAL CONNECTION
The following can be connected for measurement signal conditioning:
S
carrier‐frequency amplifier
S
DC amplifier
designed for strain gage measurement systems.
4.1 SP4M (analog)
When load cells in a six‐wire configuration are connected to amplifiers with a four‐wire
configuration, the sense leads of the load cells must be connected to the corresponding
excitation leads.
6‐wire cable connection (a choice of lengths: 1.5 m; 3 m; 6 m; 12 m)
Fig. 4.1 Schematic diagram of a connector (Pancon CE 100F26-6 or similar), 6-pin
4.1.1 Shortening the cable
When the 6-wire configuration is used, the load cell's 6-wire cable can be cut off without
impairing measurement accuracy.
4.1.2 Cable extensions
You must only use shielded, low‐capacitance measurement cables to extend the cables,
making sure that there is a proper connection with minimal contact resistance.
The cable of a six‐wire load cell can be extended with a cable of the same type.
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Shield (yellow) = cable shield connected to
lead cell body
Contact 1 (white) = Measurement signal (+)
Contact 2 (red) = Measurement signal (-)
Contact 3 (black) = Excitation voltage (-)
Contact 4 (blue) = Excitation voltage (+)
Contact 5 (green) = Sense line (+)
Contact 6 (gray) = Sense line (-)
blue marking
SP4M, SP4Mi
ELECTRICAL CONNECTION