Mounting arm tube installation

Observe the following points when installing the mounting arm tube on the mounting arm adapter:

For the correct installation height, use the position of the screen for guidance. This should always be optimally visible to the user.
Do not expose the panel PC to direct sunlight.

Installing the mounting arm tube

Regardless of the orientation of the mounting arm adapter, you must follow in the same procedure to install the mounting arm tube. Depending on whether you have oriented the mounting arm adapter upwards or downwards, the mounting arm tube has to be installed on the adapter in the same direction.

Among other tools you need a hook wrench for the installation. You can order this from your Beckhoff Sales using the following order identifier:

C9900-Z263: Hook wrench size 58-62 for tightening and loosening the slotted nut of the C9900-M75x mounting arm adapter

Figure 12 shows an example of the procedure with the standard mounting arm adapter facing upwards.

To install the mounting arm tube on the mounting arm adapter, proceed as follows:

1. Unscrew the hexagon socket screw (1) a few turns with a 3 mm Allen key (section A).

2. Push the connecting cables of the panel PC through the mounting arm tube.

3. Insert the mounting arm tube 50.2 mm into the mounting arm adapter to the stop (section B).

4. Retighten the hexagon socket screw with a torque of 3 Nm to additionally secure the mounting arm tube.

5. Tighten the slotted nut of the mounting arm adapter with a hook wrench size 58-62 clockwise with a torque of 20 Nm (section C).

You have installed the mounting arm tube on the mounting arm adapter.