Mitsubishi Electric C70 Connection Manual page 93

MITSUBISHI CNC
4. Wiring and Connecting
(2)Precautions for laying the cable
(a) Do not apply a force exceeding the cable's tolerable tension. Binding the cables too tight with tie-
wraps could result in an increased loss or a disconnection. Use a cushioning material such as a
sponge or rubber when bundling the cables and fix so that the cables do not move.
(b) Do not connect the cables with a radius less than the tolerable bending radius. Excessive stress
could be applied near the connector connection section and cause the optical characteristics to
drop. The cable bending radius should be 10 times or more than the outer diameter at the
reinforced sheath, and 20 times or more than the outer diameter at the fiber cord section.
(c) Do not apply torsion to the optical fiber cable. Laying a twisted cable could cause the optical
characteristics to drop.
(d) When laying the cables in a conduit, avoid applying stress on the fiber cord and connector
connection section. Use the tensile end such as a pulling eye or cable grip, etc.
(e) Fix the reinforced sheath with a cable clamp so that the mass of the optical fiber cable is not directly
applied on the fiber cord and connector connection section.
(f) Never bundle the cables with vinyl tape. The plasticizing material in the vinyl tape could cause the
POF cable to break.
(g) Loop the excessive cable with twice or more than the minimum bending radius R. (Confirm the
minimum bending radius in the specifications of your optical fiber cable.)
(Note 1) Binding the cables too tight with tie-wraps could result in an increased loss or a disconnection.
Use a cushioning material such as sponge or rubber when bundling the cables and fix so that
the cables do not move.
Recommended clamp material: CKN-13SP KITAGAWA INDUSTRIES
(Note 2) Never bundle the cables with vinyl tape. The plasticizing material in the vinyl tape could cause
the cable reinforced sheath section to break.
(Note 3) Loop the excessive cable with twice or more than the minimum bending radius.
(Note 4) Criteria for optical cable selection
<G396 Cable>
Wire material: Optical communication cable POF type (Core: Plastic)
Application: Use when wiring a cable of 10m or less inside the panel.
Min. bending radius:
2-core parallel cord
<G395 Cable>
Wire material: Optical communication cable POF type (Core: Plastic)
Application: Use when wiring a cable of 10m or less outside the panel.
Min. bending radius:
2-core cable (section with reinforced sheath)
2-core cable (section without reinforced sheath)
<G380 Cable>
Wire material: Optical communication cable PCF type (Core: Glass)
Application: Use when the cable length is 10m or more to 30m or less.
Min. bending radius:
2-core cable (section with reinforced sheath)
2-core cable (section without reinforced sheath)
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Cable
Cable
Cable
Minimum bending radius
30mm or more
Minimum bending radius
50mm or more
30mm or more
Minimum bending radius
50mm or more
25mm or more