09.02  Maintenance 
Siemens AG    6SE7087-6AK85-1AA0 
8-5 
Rectifier/Regenerating Unit    Operating instructions 
NOTE 
When replaced under MLFB 6SE7090-0XX85-1DA0, the PCB electronics CUR (C98043-A1680) is supplied 
programmed without EPROM (software). The EPROM programmed (last state) must be ordered separately, 
as must the operating instructions for a new software version. 
Example of replacement part ordering of a CUR with accessories: 
PCB electronics (CUR)  6SE7090-0XX85-1DA0 
EPROM programmed  6SW1701-0DA14 
Operating instructions rectifier/regenerating Unit unit 
e.g. English 
6SE7087-6AK85-1AA0 
 
 
Assigning the "Start-up" parameters for the CUR option module (A10) 
For general information see Chapter 4 
Switch over from fault display to parameterization 
Access stage "Expert mode“ 
MLFB setting (initialization)  
WARNING 
 
Initialization is mandatory. 
Specify the ID number of the MLFB in P070 of the 
rectifier/regenerating unit (rating plate on the unit) as 
per MLFB table Section 4.3.9.2. 
P051 = 3
P052 = 2
P070 = 
F060
P052 = 0
See Section
4.2.2 or 4.2.3
P and Higher key
P and Lower key
P-key
 
Return from setting MLFB 
Change back to fault display and acknowledge F060 
 
WARNING 
 
Replacing firing-circuit module A23 
Carry out circuit identification after replacing the A23 (see Chapter 4). 
Sizes H and K 
The earth connection must be restored by tightening the screws marked with an 
earthing sign on the electronics box (size H) or on the electronics slide-in unit (size K). 
 
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