![Siemens SIWAREX WL200 Series Скачать руководство пользователя страница 31](http://html.mh-extra.com/html/siemens/siwarex-wl200-series/siwarex-wl200-series_operating-instructions-manual_374530031.webp)
Commissioning
6.2 Application planning
SIWAREX WL200
Operating Instructions, 07/2016, A5E02199611B-03
31
6.2.3
Lengthening and shortening the connecting cable
Load cells can be equipped with connecting cables with four or six cores.
Note
Measurement errors
Connecting cables are only permitted to be extended using electro-magnetically compatible
housings, such as the SIWAREX JB junction box.
Single load cells
If a scale is equipped with a single load cell, the scale can be directly connected to the
weighing module if space permits. To bridge longer distances, the connecting cable can be
extended using a junction box.
Several load cells are connected in parallel in a junction box.
Connecting cable in four-wire system
Note
No calibration approval
In scales requiring official calibration, the connecting cables for load cells in a four-wire
system must not be shortened or lengthened.
When the length of the connecting cable is altered, the input and output resistance changes.
This change can be corrected by adjusting the scale, but temperature-dependent resistance
changes are not compensated for the missing or additional length of cable.
The value of the residual temperature error is presented in the diagram below. The
investigation was based on the SIWAREX measurement cable 7MH4702-8AG / -8AF. The
supply cables are connected in parallel (double).
Содержание SIWAREX WL200 Series
Страница 6: ...Table of contents SIWAREX WL200 6 Operating Instructions 07 2016 A5E02199611B 03 ...
Страница 12: ...Safety instructions 2 4 Use in hazardous areas SIWAREX WL200 12 Operating Instructions 07 2016 A5E02199611B 03 ...
Страница 20: ...Installing 4 3 Dismantling SIWAREX WL200 20 Operating Instructions 07 2016 A5E02199611B 03 ...
Страница 90: ...Dimension drawings 10 16 SIWAREX WL290 DB S CA SIWAREX WL200 90 Operating Instructions 07 2016 A5E02199611B 03 ...
Страница 100: ...Appendix A 1 Technical support SIWAREX WL200 100 Operating Instructions 07 2016 A5E02199611B 03 ...
Страница 102: ...Index SIWAREX WL200 102 Operating Instructions 07 2016 A5E02199611B 03 W Wheatstone bridge 14 ...