Procedure
NOTICE
Destruction of the fiber-optic cables
Fiber-optic cables can be destroyed under the following conditions:
● The bending radius is less than 20 mm.
● The fiber-optic cables are subject to strong light.
● The fiber-optic cables are exposed to temperatures of over 80° C.
Handle the fiber-optic cables carefully. Do not bend them with a bending radius of less than
20 mm. Protect the fiber-optic cables from heat and strong light.
① Knurled nut
② Fiber-optic cable
Figure 9-10 Releasing a fiber-optic cable
To disconnect the fiber-optic cables, proceed as follows:
1. Carefully unscrew the knurled nut ①.
2. Pull the fiber-optic cable ② out.
3. Insert the new fiber-optic cable as far as it will go. If correctly fitted, the white ID ring must be
flash with the opto-transmitter or opto-receiver.
4. Tighten the knurled nut ① again by hand.
9.7.10 Replacing branch fuses
Note
Checking thyristors
If you replace a fuse, check all thyristors. Instructions are provided in Chapter "Checking
thyristor location components (Page 93)".
The branch fuses are designed to have a service life of 10 years. The converter control and
valve monitoring system signals that a fuse is defective.
Each branch fuse consists of two, three or four single fuses. The individual fuses are connected
in parallel.
Only replace a branch fuse as a complete fuse package as specified in the spare parts list.
Maintenance
9.7 Repairs
SINAMICS SL150 6SL38600UL432AA0Z
Operating Instructions Rev.201910281433 EXAMPLE 99
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