Precautions For Sscnet Iii Cable Wiring; Minimum Bend Radius; Tension; Lateral Pressure - Mitsubishi Electric QD77MS User Manual

[2] Precautions for SSCNET
SSCNET cable is made from optical fiber. If optical fiber is added a power
such as a major shock, lateral pressure, haul, sudden bending or twist, its inside
distorts or breaks, and optical transmission will not be available. Especially, as
optical fiber for MR-J3BUS_M, MR-J3BUS_M-A is made of synthetic resin, it
melts down if being left near the fire or high temperature. Therefore, do not make
it touched the part which becomes high temperature, such as radiator or
regenerative option of servo amplifier and servomotor. Be sure to use optical
fiber within the range of operating temperature described in this manual. Read
described item of this section carefully and handle it with caution.

(1) Minimum bend radius

Make sure to lay the cable with greater radius than the minimum bend
radius.
Do not press the cable to edges of equipment or others. For SSCNET
cable, the appropriate length should be selected with due consideration for
the dimensions and arrangement of Simple Motion module or servo
amplifier. When closing the door of control panel, pay careful attention for
avoiding the case that SSCNET
cable bend becomes smaller than the minimum bend radius.
Model name of SSCNET
MR-J3BUS_M
MR-J3BUS_M-A
MR-J3BUS_M-B

(2) Tension

If tension is added on the SSCNET
loss occurs because of external force which concentrates on the fixing part
of SSCNET
worst, the breakage of SSCNET
connector may occur. For cable laying, handle without putting forced
tension. (Refer to Section Appendix 2.1 "SSCNET
strength of SSCNET

(3) Lateral pressure

If lateral pressure is added on the SSCNET
distorts, internal optical fiber gets stressed, and then transmission loss will
increase. At worst, the breakage of SSCNET
same condition also occurs at cable laying, do not tighten up SSCNET
cable with a thing such as nylon band (TY-RAP).
Do not trample it down or tuck it down with the door of control box or others.
Chapter 4 Installation, Wiring and Maintenance of the Product
cable wiring
cable Minimum bend radius [mm] ([inch])
Enforced covering cord: 50 (1.97), Cord: 25 (0.98)
Enforced covering cord: 50 (1.97), Cord: 30 (1.18)
cable or the connecting part of SSCNET
cable.)
4 - 15
cable is hold down by the door and the
25 (0.98)
cable, the increase of transmission
cable or damage of SSCNET
cables" for the tension
cable, the cable itself
cable may occur. As the
connector. At