In-Situ TROLL Net Hub Instruction Sheet - Manual (Page 2)

Instruction Sheet
1. Unscrew the strain relief from the nut and the
grommet as shown below.
Make sure that there is an O-ring present on the
grommet.
2. Twist the grommet through the drilled hole in the
housing with the O-ring against the outside of
the housing. Tighten the grommet to finger-tight,
then turn it an additional half-turn with a 15-mm
wrench.
3. Place the nut over the threads of the grommet
inside the housing. Use an 18-mm wrench to fully
tighten the nut.
4. Place the strain relief over the end of the stripped-
and-tinned cable.
5. Thread the cable through the grommet. Ensure
there is enough cable inside the enclosure to
reach the appropriate connector.
6. Tighten the strain relief with a 15-mm wrench.
7. Repeat this section for any remaining strain relief
connectors that need to be installed. If the strain
relief is housing an instrument cable, ensure the
instrument device address has been correctly
changed prior to installing the cable into the strain
relief.
Plugging Unused Strain Relief
Connectors
Plug unused strain relief connectors to prevent moisture
ingress into the enclosure.
1. Follow steps 1-3 from the section Attaching
Strain Relief Connectors to the Enclosure
2. Insert a plug into the grommet.
3. Place the strain relief over the plug and grommet,
and tighten the strain relief with a 15-mm wrench.
Number Description
1 Plug
2 Grommet
3 Plug & Grommet
4 Plug, Grommet, & Strain Relief
Externally Powered 4-port or 8-port
TROLL Net Hubs
Each screw terminal of an externally powered TROLL
Net Hub is wired the same way.
Number Wire Color Function
1 Black Ground
2 Green RS485 (-)
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