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4 Connection
MITSUBISHI CNC
76
4.1.2.3 Precautions for Laying Optical Communication Cable
(1) 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.
(2) 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.
(3) Do not apply torsion to the optical communication cable. Laying a twisted cable could cause the optical
characteristics to drop.
(4) 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.
(5) Fix the reinforced sheath with a cable clamp so that the mass of the optical communication cable is not directly
applied on the fiber cord and connector connection section.
(6) Never bundle the cables with vinyl tape. The plasticizing material in the vinyl tape could cause the POF cable to
break.
(7) Loop the excessive cable with twice or more than the minimum bending radius.
4.1.3 Precautions for Connecting 24V Power Supply
(1) When 24V power is supplied to the unit (control unit, display unit) under the following conditions, welding may occur
on the contacts due to rush current; so be careful.
When 24VDC's ON/OFF are directly controlled by a magnetic switch such as relay AND
When heat capacity of the contacts for relay, etc. used to control 24VDC's ON/OFF is small.
CKN-13SP
Recommended clamp material
KITAGAWA INDUSTRIES
Optical communication cable
(section with reinforced sheath):
Bending radius: Refer to the specification of
your optical communication cable.
Control unit