Parallel Connection (Option); Connection With Connector Plug; Emc Protection - HBK HBM PW Serie Montageanleitung

Notice
Shortening the cable changes the specifications of the load cells with a 4-wire cable.
5.4

Parallel connection (option)

Only single-point load cells with a compensated output (nominal (rated) sensitivity and
output resistance) are suitable for parallel connection. Many of the HBM single point load
cell types are available with this option.
5.5

Connection with connector plug

2
3
4
5
Fig. 5.1 Connector pin assignment
5.6

EMC protection

Electrical and magnetic fields often induce interference voltages in the measuring circuit.
Therefore:
S
Use only shielded, low-capacitance measurement cables (HBM cables fulfill both
conditions).
S
Do not route measurement cables parallel to power lines or control circuits. If this
cannot be avoided, protect the measurement cable with steel conduits, for example
S
Avoid stray fields from transformers, motors and contact switches
To ensure the best EMC protection, the load cell, together with the connection cable and
the subsequent electronics, should be placed in a shielded housing.
Exception
The load cells with shielded, round cables are EMC-tested in accordance with EC
directives and identified by CE certification. However, you must ensure that the shield
of the connection cable is connected to the shielding housing of the electronics.
PW..., SP...
ELECTRICAL CONNECTION
8
1
7
6
Plug-in contact 1 = measurement signal (+)
Plug-in contact 2 = not in use
Plug-in contact 3 = sense lead (+)
Plug-in contact 4 = not in use
Plug-in contact 5 = sense lead (-)
Plug-in contact 6 = excitation voltage (-)
Plug-in contact 7 = excitation voltage (+)
Plug-in contact 8 = measurement signal (-)
15