With these parameters, it is determined which measured value the LIS-SV should measure with a known test load using the measurement bolt on the wire rope hoist. The LIS-SV uses this value and the zero point adjustment to calculate a proportional function (load line), which in later operation is used to calculate the respective current load from the measured value of the measurement bolt.

Note

To set the test load, a test load with known weight is required. The test load should be 80% of the maximum load capacity.

The test load must be at least 40% of the maximum load capacity. If a setting is made with a test load between 40% and 80% of the maximum load capacity, this must be noted in the test log book.

The closer the test load is to the maximum load capacity, the more accurate will be the displayed weight of the load.

   Select the corresponding parameters with the arrow buttons:

─     P 1.2 for device's own load signal (input F1)

─     P 2.2 for the load signal at input F2

─     P 3.2 for the load signal at input F3

   Press Enter briefly.

●   “Last” is shown on the display.

   Hold Enter pressed until 0.000 is displayed.

   Enter the weight of the known test load from right to left.

   Press Enter briefly.

●   A continuous staircase curve from the bottom toward the top is shown on the display.

   Lift test load until it is hanging freely.

The test load should hang with little movement.

   Press the emergency stop button.

●   After 3 s “MESS” is shown on the display.

●   After 5 s the measured frequency for the test load is shown on the display.

   Unlock the emergency stop switch.

●   Six values are displayed after the measurement:

─    Frequency with the current test load

─    Gain factor

─    Zero point frequency

─    Difference value between test load and zero point

─    Load capacity

─    Value of the test load

   Briefly press Enter each time to go to the next digit.

   Hold Enter pressed.

●   The values are saved.