Siemens SIWAREX WL230 BB-S SA Інструкція з експлуатації Посібник з експлуатації - Сторінка 12
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Description
3.1 Application
Danger to life from collapse of the structure
Without any protective measures the structure can collapse if the load cell is not installed
correctly. Supporting structures complying with the general rules of mechanical engineering
must therefore be designed by the customer for installing the base plate or elastomeric
bearing.
As an alternative installation units from the product range of Siemens can be used.
3.1.2
Lifting protection
The lifting protection prevents the load bearing implements from being lifted off of the load
cells.
If there is a risk of the load bearing implement being lifted or toppled, then lifting protection is
required. This is required in the case of lightweight containers and tall, outdoor silos.
3.1.3
Overload protection
The overload protection protects load cells from a load that is too great.
There is overload protection against excessive loads in the measuring direction and overload
protection against excessive transverse forces.
Transverse forces are caused by, for example, wind, filling processes, acceleration, or
conveyor belt friction. If these forces exceed certain values, the load cells must be protected
from them.
3.1.4
Use of the grounding cable
The grounding cable is used to protect the load cells from undesired currents. The causes of
such currents are, for example:
● Equalizing currents with missing or faulty equipotential bonding conductors.
● A lightning strike nearby
● Welding work
● Static charge
Figure 3-2
12
WARNING
Example usage of the grounding cable
Operating Instructions, 03/2013, A5E31529044A-01
SB-S SA