Siemens SINAMICS S150 NEMA, Руководство по эксплуатации

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Functions, monitoring and protective functions
9.4 Extended functions
Enclosed Drives
664
Operating Instructions, 12/2018, A5E36652151A
Requirements
The following requirements must be satisfied before the adjustment:
● The offset value p2525 was determined when commissioning the drive for the first time.
● After being commissioned for the first time, the drive train and its configuration was not
mechanically changed.
Procedure
Proceed as follows to carry out the "Absolute encoder adjustment with offset acceptance"
procedure:
1.
Enter the offset value, determined when commissioning the drive for the first time, into
parameter p2525.
2. Call "Absolute encoder adjustment with offset acceptance" using parameter p2507 = 4 to
accept the offset value and to link with the adjustment point.
Please observe the following information relevant for this particular step:
–
The offset value is used to calculate the position actual value (r2521). Using value "3",
parameter p2507 signals that the adjustment is valid. In addition, bit r2684.11
(= reference point set) is set to a value of "1".
– The offset value is immediately accepted, and is active without the system having to
be restarted. If the drive had identified the adjustment, then note (Alarm A7441) is
displayed. The user is prompted to save the adjustment from RAM to ROM.
3. Save the offset of the absolute encoder adjustment in p2525 in a non-volatile fashion
(RAM to ROM).
Note
After being commissioned for the first time, carefully ensure that the drive train and its
configuration have not been mechanically changed or modified. When mechanical
changes are made, the synchronization between the encoder actual value and the
machine zero is lost. In this particular case, it is crucial that the axis is readjusted.
4. Check the following machine positions: Check the end positions, software limit switches
and reference point using a test run at a low velocity.
Referencing with DRIVE-CLiQ encoders
DRIVE-CLiQ encoders are available as either a "multiturn" or "singleturn" absolute encoders.
If the "referencing" function is selected via the PROFIdrive encoder interface and if a DRIVE-
CLiQ encoder or other type of absolute encoder is connected via the DRIVE-CLiQ interface,
the zero crossing of the singleturn position is used as the reference point.