Rockwell Automation 9000 Series Sensor - Manual (Page 21)

Sensor Cable Guidelines
Entek 9000 Series Sensor Installation Guide 13
For a sensor with a top exit cable connection, make sure there is at least 6 inches of
clearance above the machine surface to allow for movement of the sensor and cable.
Clamp the cable within 6 inches of the sensor, allowing enough room for the cable to
bend without damage. Clamp the cable at intervals to prevent movement.
For sensors with a side exit cable connection, clamp the cable 3–4 inches from the
sensor. Clamp the cable at intervals to prevent movement.
Cable construction
The sensor cable should be twisted pair with its own foil shield. Do not ground the cable
shield drain wire at both ends. The shield connections should be carried through any
junction boxes without connecting to a ground or other shields.
If the end of the sensor cable is in a location where it will be splashed or hosed down, coat it
with RTV silicone rubber sealant to prevent fluids from entering the cable.
! At the sensor end, use RTV in and around the connector and cable entry to the
connector.
! At the opposite end to the sensor, terminate the cable in a NEMA housing using proper
cable entry connectors that create a tight seal around the cable and the entry hole of the
housing.
Machine surface
Cable clamp
Service loop
Machine surface Fixed surface
Service loop