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2. INSTALLATION
(3) Avoid any probability that the cable sheath might be cut by sharp chips, rub bed by a machine corner or
stamped by workers or vehicles.
(4) For installation on a machine where the ser vo motor will move, the flexing radius should be m ade as large
as possible. Refer to section 10.4 for the flexing life.
2.4 SSCNET cable laying
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 temperat ure. Therefore, do not make it touched the part, which
becomes high temperature, such as radiator or regenerative option of servo amplifier.
Read described item of this section carefully and handle it wit h caution.
(1) Minimum bend radius
Make sure to lay the cable with greater radius than the m inimum bend radius. Do not press the cable to
edges of equipment or others. For SSCNET cable, the appropriate length should be se lected with due
consideration for the dimensions and arrangem ent of servo amplifier. When closing the door of co ntrol box,
pay careful attention for avoiding the cas e that SSCNET cable is hold down by the door and the cable
bend becomes smaller than the minimum bend radius.
For the minimum bend radius, refer to section 11. 1.5.
(2) Prohibition of vinyl tape use
Migrating plasticizer is used for vinyl tape. Keep the MR-J3BUS M, and MR-J3BUS M-A cables away
from vinyl tape because the optical character istic may be affected.
SSCNET cable Code Cable
MR-J3BUS M
MR-J3BUS M-A
MR-J3BUS M-B
Optical code Cable : Phthalate ester plasticizer such as DBP and DOP
may affect optical characteristic of cable.
: Cable is not affected by plasticizer.
(3) Precautions for migrating plasticizer ad ded materials
Generally, soft polyvinyl chloride (PVC) , polyethylene resin (PE) and Teflon (fluorine resin) contain non-
migrating plasticizer and they do not affect th e optical characteristic of SSCNET cable.
However, some wire sheaths and cable ties, wh ich contain migrating plasticizer (phthalate ester), may
affect MR-J3BUS M and MR-J3BUS M-A cables.
In addition, MR-J3BUS M-B cable is not affected by plasticizer.