4. Installation
4-7 Connecting the power and signal cables
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4-7-2 Connecting the power and signal cables to the main unit
Connect the power cable, signal cable, and contact cables to the main unit (SD-3/SD-3SC).
1 Unscrew the M4 hex socket set screw on the main unit
cover, then rotate the cover counterclockwise to
remove.
Use a hex key wrench (2 across flats) to unscrew the M4
hex socket set screw.
Be careful to avoid dropping the cover while unscrewing and
removing it.
2 Unscrew the two M3 screws securing the display unit.
3 Pull out the display unit and hang on the lug on the
housing.
The display unit is connected to the terminal plate unit by a
flat cable. Pulling with excessive force may disconnect the
cable.
During the removal process, avoid pulling on the display unit
with excessive force.
4 Ground the main unit.
Make sure the grounding is Class D equivalent (grounding
resistance not exceeding 100 Ω). For information on
grounding, refer to ‘4-6 Connecting the grounding terminal’.
Lug on housing
Lug on housing
Grounding bolt
Display unit
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