Mettler Toledo IND560x Manual De Instalación página 79

3.4.4.1. Plastic Core Fiber Optic Cable
For very short distances up to 40m (130 ft), a plastic core fiber optic cable is available. This cable
is available with connectors already installed on each end or is available in bulk and a termination
kit can be used for connection in the field. Please refer to the appropriate price pages and catalogs
for available lengths and part numbers.
3.4.4.2. Glass Core Fiber Optic Cable
Cable lengths longer than 40m (130 ft.) require use of a hard clad silica (glass) core cable. This
cable requires special tools to properly install connectors so field termination of the cable is not
recommended.
If necessary, cables can be coupled using a special optic coupler, but the coupler signal loss is
equivalent to 150 m (500 ft.) of cable. When one coupler is used the useable distance is reduced
to 150 m (500 ft.)
3.4.4.3. Fiber Optic Interface Connections
The following instructions describe fiber optic cable connections to the IND560x terminal. Refer to
the technical manual of the other connected device for details on connecting the other ends of the
cables.
1. Make certain that power is removed from the IND560x terminal.
2. For the harsh enclosure, feed the ends of the fiber optic cables through the split bushing of the
3. Be sure the fiber optic cable is not bent to less than a 13 mm (1/2 inch) radius. Any sharp
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correct cable gland (identified in Figure 3-16) until the cable reaches the fiber optic interface
board - approximately 90 mm (3.5 in.). The COM5 cables should enter through cable gland
closest to the corner of the enclosure and the COM4 cables should enter through the cable
gland beside the COM5 gland. For the panel-mount enclosure, it is not necessary to open the
enclosure to access the fiber option board.
Figure 3-44: Split Grommet for Fiber Optic Cables
kinks in the fiber optic cable will damage it and then the cable must be replaced. Coil any
excess cable neatly in large loops close to the IND560x or other device and secure it so it does
not get damaged.
METTLER TOLEDO IND560x Installation Manual 3-35