Siemens SIMATIC NET PROFIBUS manual Fitting Simplex Connectors

SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors

Fitting Simplex Connectors

Insert the cord into the simplex plug as far as it will go Œ and close the clamp •. Caution: The fiber must extend at least

1.5mm beyond the end face of the connector.

Close the clamp until you hear the catch lock in place.

Repeat the same procedure for the second cord.

Caution: Do not insert the connector into a device socket, otherwise the excess fiber length is liable to damage the transmitter and receiver elements.

Grinding and Polishing Simplex Connectors

Cut off excessive fiber with scissors leaving approximately 1.5 mm in length.

Insert the simplex connector into the polishing holder as far as it will go.

Grind down the excess fiber by describing a figure-of-eight on polishing paper (600 grit) on a flat solid surface.

The polishing is completed when the fiber is flush with the end face of the connector.

Remove the debris from the polishing holder and from the end face of the connector using a clean cloth.

Then polish the end face of the connector by describing figures-of-eight on the pink polishing foil (rough side). Repeat the figure-of-eight movement approximately 25 times.

Polishing reduces the attenuation by approximately 2 dB (corresponds to approximately 10 m cable length). With short lengths of cable polishing is unnecessary.

Repeat the procedure with the second connector and clean the surfaces of the plug with a clean cloth.

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