Yaskawa MP920 Communications Module - Manual (Page 316)

Appendix D Wiring Communications
D.4.2 Indoor and Outdoor Panel-to-Panel Optical Wiring
D-24
„ Cable Installation Precautions
The handling of optical fiber cables during installation is basically the same as that of metal
cables, but pay special attention to the following precautions.
General Precautions
• Do not apply shock to cable drums during transport or relocation.
• Always roll a cable drum in the direction indicated on the drum.
• In principle, store cable drums indoor.
• Never pile up cable drums face-to-face.
• Do not twist cables while laying them.
• Do not step on cables.
Precautions Specific to Optical Fiber Cables
• Be sure that optical fiber cables will not receive tension greater than the maximum allow-
able limit. (The allowable tension differs according to the cable structure, so refer to the
relevant cable specifications.)
• Do not bend optical fiber cables at an angle exceeding the maximum allowable limit.
(The allowable bending radius differs according to the cable structure, so refer to the rel-
evant cable specifications.)
• Because crystal glass optical fiber cables are connected using a fusing connection device,
provide an extra cable length of at least 3 meters at both ends.
• Unlike metal cables, crystal glass optical fiber cables are connected using a fusing con-
nection device, so provide a working area of approximately 1 m × 1 m.