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System Manual – MOVIDRIVE® compact Drive Inverters
9
Installation notes for the INTERBUS-LWL interface (MCH42A)
Installation
9.3
Installation notes for the INTERBUS-LWL interface (MCH42A)
Bus connection
via fiber optic
cable (LWL)
The bus connection is made using a fiber optic cable. Polymer fiber cables and HCS
cables may be used for this purpose.
Polymer fiber
cables
This type of cable is used for distances of up to 70 meters between two INTERBUS par-
ticipants. Depending on the system, several designs are available. This type of cable is
characterized by simple and cost-effective installation.
HCS cable
This type of cable can be used for distances up to 500 m because they are characterized
by considerably lower attenuation compared to polymer fibers.
The bus cable must be at least 1 m long. For shorter distances, use cable jumpers from
Phoenix Contact.
Check list for installing fiber optic cables
Installing fiber optic
cables
•
Do not exceed the maximum cable length
•
Observe the permitting bending radii
•
Do not squeeze or bend fiber optic cables
•
Do not exceed the tensile load when installing the cable
•
The optical fiber cable must be uncoiled using an uncoiling device
Protective
measures for fiber
optic cables
•
Protect fiber optic cables against strain and impermissibly small bending radii
•
Install the cables without loops
•
Protect cables against sharp edges
•
Use a special cable type if fiber optic cables are installed in special areas (e.g. in the
ground or close to welding robots)
Prefabricating fiber
optic cables
•
Strip off the outer cable sheath and the individual wire without damaging them
•
Fix the individual wire in the connector (strain relief)
•
Polish and install the front of the connector according to the guidelines
Measuring fiber
optic cables
•
Check whether the light intensity complies with the limit values (optical diagnostics
using CMD tool or fiber-optic measuring instrument)
Connecting fiber
optic connectors
The fiber optic cable is connected to MOVIDRIVE
®
compact
MCH42A using F-SMA
connectors. Two connectors are required each for the incoming and outgoing remote
bus (transmitter and receiver). SEW-EURODRIVE recommends using F-SMA connec-
tors with bending protection to ensure that the optimum bending radius is maintained.
Order information
F-SMA connector (e.g. Phoenix Contact).
NOTE
For more information on proper routing of fiber optic cables, please refer to the Fiber
Optic Installation Guidelines from Phoenix Contact (item designation IBS SYS FOC
ASSEMBLY).
Article designation
Designation
F-SMA connector set for polymer fiber cables (4 connectors) with bending pro-
tection
PSM-SET-FSMA/4-KT
Summary of Contents for MOVIDRIVE compact MCH41A
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