6.1.4 Setting Load Cell Sensor Limit The Lx Series software lets you add load cell limits to help minimize potential overload conditions. You can specify the maximum load that the load cell can measure. Once this limit is achieved, the crosshead movement will stop preventing further increased loading onto the load cell sensor. NOTE Limiting the load cell measurement cannot eliminate overload conditions due to shock on the load cell sensor or load cell overloading at very high speeds. Some overload may occur and in most situations, preventing permanent damage to the load cell sensor’s electrical bridge is achieved. CAUTION Load cell overload is caused by operator error due to the manner in which the test machine is operated and how the test setup is constructed. Always exercise extreme care when creating a test or when operating your machine. Star- rett load cells damaged due to misuse are not covered by our standard warranty.
You can help minimize load cell damage by setting a load cell limit as follows:
1. With your Lx Series software, access the Main Settings menu by selecting the Lx symbol.
2. Select the Settings symbol. 3. Select the Loads setting.
4. Adjust the Max Load Allowed setting to your desired %. 100% is the default. This means the load cell is allowed to measure up to 100% of its rated load capacity. Changing to 80% means the load cell sensor can measure up to 80% of its rated capacity. Once 80% of the capacity is measured, the Lx software will issue a message and stop any further crosshead movement or applied load to the sensor. 5. Select Done.
Set Load Sensor Limit as follows:
1. Select Lx Symbol for Main Settings Menu 2. Select LOADS setting 3. Enter value for the maximum % of full scale load allowed for the attached load cell sensor. 4. Select DONE NOTE The load cell sensor limits is based on the load cell sensor installed on the machine. 100% is the factory default mean- ing the load cell is allowed to measure to full scale. If 50% is entered and the sensor has a 2000N capacity, the sensor will measure up to 1000N. If 1000N is measured, a measured load beyond 1000N causes the test to stop. NOTE The load cell sensor limits helps prevent overloading. However, overloading at high rates of speed, even with load sensor limit applied, may result in an overload of your sensor.
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