The travel limit switches are then installed.

The trolley has a travel limit switch with braking and/or shut-down functions. This prevents the trolley from running against the end of the crane girder and causing the load to swing heavily.

The travel limit switch consists of a cross-type limit switch and several switching lugs. These components are installed on the profile head and on the HBF drive.

Once the trolley can run with maximum load capacity:

    Suspend a load on the load hook which corresponds to the maximum load capacity of the crane.

    Determine the necessary distance between switching lug and crane girder end:

For braking function: the distance must be long enough so that the trolley is only running at a low speed shortly before the crane girder end.

For shut-down: the distance must be long enough so that the trolley is at a standstill shortly before the crane girder end.

    Add 0.5 m to 1 m to the calculated distance. This will compensate for the brake wear on the drive.

The cross-type limit switch with connection cable is integrated in the power supply. The switching lugs are installed on the HB profile rails.

On the HBF drive on the side turned away from the chain hoist:

    Bolt the mounting plate and spacer plate onto the HBF drive with the M6x25 rib screws (2x). 15 Nm.

    Screw on the cross-type limit switch with the M5x50 fillister-head screws (2x), washers and hexagonal nuts. 3 Nm.

    Position the switching lugs so that the drive will switch at the desired switching points.

─     For braking function: two switching lugs are required for braking.

In the traversing range, the cross-type limit switch is at position “0”; in the left braking area, the cross-type limit switch is at position “1” and in the right braking area at position “5”.

─     For the braking and shut-down functions: four switching lugs are required for braking and shut-down.

The cross-type limit switch is also at position “2” in the left shut-down area and at position “4” in the right shut-down area.

    Insert switching lugs from above into the profile head of the HB profile rail. In doing so, bring the head nut into the profile head.

    Turn the head nuts so that they lay crosswise in the profile head.

    Screw the M8x20 rib screws to the head nuts. 30 Nm.