This parameter is used for simple and fast diagnosis and measurement of the mains voltage curve at the start of fast lifting speed. The measurement is performed with the motor running, and the crane is therefore functional in this parameter and can lift/lower.

The crane should be positioned as far as possible from the feed unit of the conductor system so that the voltage drop on the conductor system is also measured.

A total of 10 values of the mains voltage are measured [in V]. At the start of the fast lifting speed, the mains voltage is measured every 50 ms.

   Position the crane as far as possible from the feed unit of the conductor system.

   Attach test load.

   Lift test load 2 s with slow lifting speed and then switch to fast lifting speed for at least 2 s.

   Select parameter P 3.41 with the arrow buttons.

   Press Enter briefly.

●   The parameter is opened.

●   The first value is displayed.

   To go to the next value, press Enter briefly.

For a mains voltage of altogether 400 V, the allowed deviation of the measured values from the data sheet is maximally -6.5%. These values must not fall below this limit!

Next, the parameter level must be called up again in order to exit the parameter:

   Hold Enter pressed until “Code” or “P-nr” appears in the display.

   Open the parameter level.

   Exit the parameter level via P 9.9.

   Set down the test load.