Siemens SINAMICS PERFECT HARMONY GH150 Operating Instructions & Installation Instructions page 127

Final checks
1. Make sure that all the screws have been tightened with the correct torques.
2. Check whether all of the couplings of the cooling water connections are correctly inserted
Resetting the bypass marking
When the bypass has been triggered, the power cell is electronically marked. After installing a
new power cell, including bypass, you must reset this marking. Proceed as follows:
1. Select parameter p6112 on the operator panel or in STARTER.
2. Enter the number of the replaced power cell. The numbering of the power cell is identical to
3. Select parameter p6113. Set the value to "0". This will reset the electronic marking.
SINAMICS PERFECT HARMONY GH150 6SL38253AE412AA1-Z
Operating Instructions Rev.201910281231 EXAMPLE
NOTICE
Damage and/or short-circuits at the double submodules caused by an incorrect tightening
torque
If you do not comply with the screw tightening torques, then this can lead to damage and/
or short-circuits at the power cells.
● When installing the power cells comply with the specified torques.
Screw type
M4
M5
M8
and interlocked (shift the plastic ring towards the front and insert the locking ring).
NOTICE
Damage to the gating unit if the locking ring is not inserted
The gating unit can be damaged if the flow of water through the heatsink is not guaranteed.
In order to guarantee a reliable flow of water through the heat sink, the locking ring must
be correctly inserted.
● After the water coupling has been interlocked, insert the locking ring into the slot
between the locking ring and the coupling.
● If the locking ring cannot be inserted, then check whether the water coupling is correctly
inserted and interlocked.
Note
Ventilating the deionized water circuit
Vent the deionized water circuit after replacing a power cell.
the number of the alarm value of alarm A30203.
Torque
1.8 Nm
3 Nm
For the M5 x 25 screws of the upper holding rail, a torque of 6 Nm
must be used (see step 4 of the description on removing).
13 Nm
Maintenance
9.7 Repair
127