Siemens SINAMICS SL150 Operating Instructions Manual page 95

Changing the thyristor electronics
To change the thyristor electronics, proceed as follows:
1. Take out the thyristor electronics. To do this, loosen the four screws with which the thyristor
2. Send the defective thyristor electronics back. Refer to Notes on sending back (Page 95) to
3. Install the new thyristor electronics. Tighten the screws with a tightening torque of 1.8 Nm.
Connecting cables
To connect the cables, proceed as follows:
1. Reconnect the fiber-optic cables to the opto-transmitter and opto-receiver in accordance
2. Check the correct insertion depth of the fiber-optic cables with the aid of the marking rings.
3. Reinsert the connecting leads into the thyristor electronics.
4. Check that everything is correctly connected and that the cables are correctly inserted.
Notes on sending back
Send defective thyristor electronics to the manufacturer for repair. Please observe the following:
● Use suitable containers made of cardboard, wood or plastic for shipping.
● Use filler material to hold the thyristor electronics in place.
● Enclose dehumidification material if the packaging is air-tight.
● Note the ESD in the "Safety instructions" section.
NOTICE
Material damage due to inadequate packaging
Components can be bent by careless packing or insufficient packaging. This makes
determining the exact cause of the error difficult.
● When packing the thyristor electronics, take care not to bend protruding parts.
Note
Any information about the damage to the thyristor electronics will be helpful for determining the
cause of the fault and for repair. Moreover, this data is evaluated for a reliability analysis.
Include information about the most recent operational performance and about any previous
conspicuous behavior.
SINAMICS SL150 6SL38600UL432AA0Z
Operating Instructions Rev.201910281433 EXAMPLE
electronics are fixed to the carrier frame.
help you.
with the markings. Carefully hand-tighten the knurled nut.
If the white colored ring on the fiber-optic cable is flush with the shaft end of the plug case,
the fiber-optic cables are correctly inserted.
Maintenance
9.7 Repairs
95