Rockwell-automation 842D-60131331BXA DeviceNet Encoder User Manual Manuel d'utilisateur télécharger pdf (Page 14)

2-2 Installation

It is also important to determine the limitations of the trunk and drop

cables. Refer to the following table.

For more information on DeviceNet cables and cable systems, refer to

the DeviceNet Cable System Planning and Installation Manual,

Publication DN-6.7.2.

Installing the DeviceNet Encoder

The following instructions explain how to physically install your

DeviceNet encoder.

1. Be sure to select the proper size flexible coupling clamp to mate

to the encoder shaft, e.g., 845-FC-*-*. See the Encoder

Accessories section in the Allen-Bradley Sensors catalog.

2. Use the dimension drawings to determine the encoder mounting

hole locations. See Appendix A.

3. Slide the flexible coupling onto the shaft, but do not

tighten the

set screws.

4. Mount the encoder and tighten with three size M4 mounting

screws (not supplied).

5. Center the flexible coupling and tighten the set screws.

6. Rotate the machine slowly and verify that the flexible coupling is

not deforming beyond specifications.

Data Rates 125 Kbps 250 Kbps 500 Kbps

Thick Trunk Line 500 m (1,640 ft) 250 m (820 ft) 100 m (328 ft)

Thin Trunk Line 100 m (328 ft) 100 m (328 ft) 100 m (328 ft)

Maximum Drop Length 6 m (20 ft) 6 m (20 ft) 6 m (20 ft)

Cumulative Drop Budget 156 m (512 ft) 78 m (256 ft) 39 m (128 ft)

ATTENTION: Only personnel familiar with

DeviceNet products and associated machinery should

plan or implement the installation, start-up,

configuration, and subsequent maintenance of the

DeviceNet absolute encoder. Failure to comply may

result in personal injury and/or equipment damage.

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Rockwell-automation 842D-60131331BXA DeviceNet Encoder User Manual Manuel d'utilisateur Page 14