Electrical Connection; Instructions For Cabling; Pin Assignment - HBK Z30A Mounting Instructions

8

ELECTRICAL CONNECTION

8.1

Instructions for cabling

S
Always use shielded, low‐capacity measurement cable (HBM cables meet these
requirements).
S
Do not lay measurement cable parallel to high‐voltage power lines or control circuits.
If this is not possible (e.g. in cable ducts) protect the measurement cable, e.g. with
armoured steel tube and maintain a minimum distance of 50 cm from the other
cables. High‐voltage power lines and control lines should be twisted (15 turns per
meter).
S
Avoid stray fields of transformers, motors and contactors.
S
Do not earth transducer, amplifier and display device more than once. All the devices
in the measurement chain are to be connected to the same earthed conductor.
S
The screen of the connection cable is connected to the transducer housing.
8.2

Pin assignment

Two 7‐pin male device connectors are located on the enclosure (male connectors, Series
723). To avoid creating force bypasses through the cable, you can use either the lower or
the lateral connector, depending on the configuration.
If the transducer is connected according to the following connection diagram then when
the transducer has compressive loading the output voltage at the measuring amplifier is
positive.
Top view
6 1
5 7 2
4 3
Binder series 723
Fig. 8.1 Male connector, series 723 (screwed)
Z30A
ELECTRICAL CONNECTION
Pin on
Binder plug
1
2
3
4
5
6
7
Assignment
Measurement signal (+)
Excitation voltage (-) (TEDS)
Excitation voltage (+)
Measurement signal (-)
No function
Sensor circuit (+)
Sensor circuit (-) (TEDS)
15