Replacing Branch Fuses - Siemens SINAMICS SL150 Operating Instructions Manual

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
②
Figure 9-10
To disconnect the fiber-optic cables, proceed as follows:
1. Carefully unscrew the knurled nut
2. Pull the fiber-optic cable
3. Insert the new fiber-optic cable as far as it will go. If correctly fitted, the white ID ring must be
4. Tighten the knurled nut
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.
SINAMICS SL150 6SL38600UL432AA0Z
Operating Instructions Rev.201910281433 EXAMPLE
Knurled nut
Fiber-optic cable
Releasing a fiber-optic cable
flash with the opto-transmitter or opto-receiver.
①
.
②
out.
①
again by hand.
Maintenance
9.7 Repairs
99