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Chapter 4 Installation, Wiring and Maintenance of the Product
[2] Precautions for SSCNET cable wiring
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 is hold down by the door and the
cable bend becomes smaller than the minimum bend radius.
Model name of SSCNET cable
Minimum bend radius [mm] ([inch])
MR-J3BUS_M 25
(0.98)
MR-J3BUS_M-A
Enforced covering cord: 50 (1.97), Cord: 25 (0.98)
MR-J3BUS_M-B
Enforced covering cord: 50 (1.97), Cord: 30 (1.18)
(2) Tension
If tension is added on the SSCNET cable, the increase of transmission
loss occurs because of external force which concentrates on the fixing part
of SSCNET cable or the connecting part of SSCNET connector. At
worst, the breakage of SSCNET cable or damage of SSCNET
connector may occur. For cable laying, handle without putting forced
tension. (Refer to Section Appendix 2.1 "SSCNET cables" for the tension
strength of SSCNET cable.)
(3) Lateral pressure
If lateral pressure is added on the SSCNET cable, the cable itself
distorts, internal optical fiber gets stressed, and then transmission loss will
increase. At worst, the breakage of SSCNET cable may occur. As the
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.
Summary of Contents for MELSEC-L Series
Page 2: ......
Page 30: ...MEMO ...
Page 70: ...2 10 Chapter 2 System Configuration MEMO ...
Page 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
Page 103: ...3 33 Chapter 3 Specifications and Functions MEMO ...
Page 107: ...3 37 Chapter 3 Specifications and Functions MEMO ...
Page 111: ...3 41 Chapter 3 Specifications and Functions MEMO ...
Page 115: ...3 45 Chapter 3 Specifications and Functions MEMO ...
Page 140: ...4 22 Chapter 4 Installation Wiring and Maintenance of the Product MEMO ...
Page 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
Page 342: ...5 202 Chapter 5 Data Used for Positioning Control MEMO ...
Page 438: ...7 20 Chapter 7 Memory Configuration and Data Process MEMO ...
Page 440: ...MEMO ...
Page 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
Page 594: ...9 134 Chapter 9 Major Positioning Control MEMO ...
Page 624: ...10 30 Chapter 10 High Level Positioning Control MEMO ...
Page 656: ...11 32 Chapter 11 Manual Control MEMO ...
Page 690: ...12 34 Chapter 12 Expansion Control MEMO ...
Page 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
Page 866: ...14 68 Chapter 14 Common Functions MEMO ...
Page 884: ...15 18 Chapter 15 Dedicated Instructions MEMO ...
Page 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
Page 1036: ...Appendix 88 Appendices MEMO ...
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