Replacing Surge Arresters - Siemens SINAMICS GL150 Operating Instructions & Installation Instructions

Maintenance
9.7 Repairs
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 9-9
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
9.7.9

Replacing surge arresters

To replace the surge arrester, proceed as follows:
1. Release the screws.
2. Remove the defective surge arrester.
3. Insert the new surge arrester.
4. Screw the surge arrester in place with the following torque:
126
Knurled nut
Fiber-optic cable
Releasing a fiber-optic cable
flash with the opto-transmitter or opto-receiver.
3EK7 = 40 Nm
3EJ2 = 70 Nm
The surge arrester must not be subject to a transverse force greater than 370 N.
①
.
②
out.
①
again by hand.
SINAMICS GL150 6SL38502UM114PA0Z
Operating Instructions Rev.201910281441 EXAMPLE