Routing the cables in the mounting arm adapter

Depending on the device equipment, the connections are either located at the connection block on the rear side of the control panel or inside the mounting arm adapter. If you have ordered the control panel with one of the following Beckhoff mounting arm adapters installed ex factory, it is essential that you observe the cable routing shown (see Fig. 28) in order to avoid cable damage:

• C9900-M750
• C9900-M751
• C9900-M752
• C9900-M753

Fig.27: Routing the cables in the mounting arm adapter

For the CP39xx-0000 (section A) you have to route the power supply cable (1) further outside and the data cables (2) inside. You must fix the cables to the strain relief rail with cable ties as follows:

• Attach the power cable (1) to the far right of the strain relief rail by pulling the cable tie through the two outer right straps of the rail.
• Attach the data cables (2) to the far left of the strain relief rail, using a cable tie to secure both cables together. To do this, use the left and the third strap from the left.

For the CP39xx-0010 (section B) you have to route all cables inside. If you use the CU8803 transmitter box, you only have one cable, which you also have to lay inside. You must fix the cables to the strain relief rail with cable ties as follows:

• In the case of two cables use a cable tie to secure both cables together on the far left of the strain relief rail. To do this, use the left and the third strap from the left.
• In the case of one cable pull the cable tie through the two outer left straps on the far left of the strain relief rail.

In the case of the CP39xx-0000 you also have to fasten the power cable that lies further to the outside to a strain relief plate in addition to the strain relief rail (see Fig. 30). To do this, pull the cable through under the plate and then fasten the cable to the plate with cable ties.

Fig.29: Power supply cable strain relief plate