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MELSEC-Q
3 SPECIFICATIONS
3.1.3 Optical fiber cable specifications
This section explains the specifications of the optical fiber cables used with the
MELSECNET/H optical loop system. Confirm that the cable in use conforms to the
details of the optical fiber cable specifications.
A technical skill and a special tool are needed when connecting an optical fiber cable
to an exclusive connector.
Optical fiber cables with connectors are also available.
For cabling, please consult your local Mitsubishi representative.
Table 3.3 Optical fiber cable specifications
Item
SI (Multi-
particulate glass)
H-PCF (Plastic-
clad)
Broad-band H-
PCF (Plastic-clad)
QSI (Quartz
glass)
QI-50/125 (Quartz
glass)
QI-62.5/125
(Quartz glass)
Interstation
distance
10 Mbps 500 m 1 km 1 km 1 km 2 km 2 km
25 Mbps 200 m 400 m 1 km 1 km Must not be used Must not be used
Transmission loss 12 dB/km 6 dB/km 5 dB/km 5.5 dB/km 3 dB/km 3 dB/km
Core diameter 200 m 200 m 200 m 185 m 50 m 62.5 m
Clad diameter 220 m 250 m 250 m 230 m 125 m 125 m
Primary membrane 250 m — — 250 m — —
Applicable connector F06/F08 or equivalent (JIS C5975/5977 conformance)
REMARKS
The following types of optical fiber cables are available.
A type: Cable for connection inside control panel
B type: Cable for connection between control panels inside a building
C type: Cable for outdoor connection
D type: Reinforced cable for outdoor connection
For other special-purpose cables such as flexible cables or heat-resistant cables,
please contact your local Mitsubishi representative.
(1) Cable loss of GI-62.5/125 optical fiber cable
Optical
module
IN
OUT
SD
RD
SD
RD
QJ71LP21GE
QJ72LP25GE
Conversion cable (1m) *1
Adaptor
Connection loss: 1 dB (max.) Connection loss: 1 dB (max.)
Adaptor
Conversion cable (1m)
SD
RD
SD
RD
IN
OU
T
Total cable loss = 7.5 dB or less
5.5 dB or less
1: Conversion cable
Conversion Type Cable
CA type FC type AGE-1P-CA/FC1.5M-A
CA type ST type AGE-1P-CA/ST1.5M-A
CA type SMA type AGE-1P-CA/SMA1.5M-A
Purchased from: Mitsubishi Electric Europe GmbH