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Functions, monitoring and protective functions
9.4 Extended functions
Note
Re-calibrate after an adjustment loss
If an adjustment is lost on an already adjusted axis, the axis will remain unadjusted even
after a POWER ON of the drive unit. The axis needs to be adjusted again in such cases.
Rotary absolute encoder
During adjustment with the rotary absolute encoder, a range is aligned symmetrically around
the zero point with half the encoder range within which the position is restored after switch
off/on.
If position tracking is deactivated (p2720.0 = 0), only one encoder overflow is permitted to
occur in this range (for further information, see section Position actual value conditioning
(Page 613)).
If the reference point (p2599) is in the encoder range, the actual position value is set to the
reference point during adjustment. Otherwise, adjustment is canceled with F07443.
NOTICE
Material damage caused when using the encoder outside the defined encoder range
If a rotary absolute encoder is used outside the defined encoder range, then after switching
off/switching on, undesirable motion can occur. This can damage the machine.
• After adjustment, ensure that the encoder range that has been set up is not exited.
• Activate position tracking (p2720.0) if there is a risk that the encoder range is exited.
Linear absolute value encoder
No overflow occurs with linear absolute encoders, which means that the position can be
restored within the entire traversing range after switch off/on once adjustment has been
carried out. During adjustment, the actual position value is set in line with the reference
point.
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.
640
Converter cabinet units
Operating Instructions, 11/2017, A5E36652151A
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