Parker ac890 - Page 437

D-41 Programming
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
Parameter Descriptions
CALIBRATN STATUS
PREF: 71.13
Default: 0
Range: see below
If a sincos absolute Endat encoder is fitted (single-turn or multi-turn), the software will attempt to match the slow absolute
position (Endat) information to the fast analog feedback information, to obtain a fast absolute position feedback. This will
normally be done on power-up. If the encoder is wired correctly and working correctly, these should match. The
CALIBRATN STATUS diagnostic will then display COMPLETED. If the encoder is not an absolute type, the diagnostic will
show NOT REQUIRED. If calibration fails, this diagnostic will indicate where the problem may lie. Refer to CAL FAIL
RETRY.
Enumerated Value : Type
0 : NOT REQUIRED
1 : DRIVE NOT STOP'D
2 : MOTOR NOT STOP'D
3 : ENDAT FAULT
4 : CAL IN PROGRESS
5 : ID PSN IN PRGRSS
6 : COMPLETED
7 : CALIBRATION LOST
8 : CALIBRATN FAILED
CAL FAIL RETRY
PREF: 71.24
Default: FALSE
Range: FALSE / TRUE
The software will make a number of attempts to calibrate the absolute position (see CALIBRATN STATUS above) and then
go into the CALIBRATN FAILED state. If the problem has been corrected, it is necessary to get it to try again. This can be
done either by switching the drive on and off, changing a related parameter, or by setting CAL FAIL RETRY = TRUE. When
the calibration is done, it will automatically be reset to FALSE.
LINE COUNT X4
PREF: 71.31
Default: 0
Range: _
Diagnostic showing the encoder line count times 4, i.e. each edge is counted. This diagnostic is set to 0 at power
-up and reset
when RESET LINE COUNT is TRUE.
RESET LINE COUNT
PREF: 71.23
Default: FALSE
Range: FALSE / TRUE
If TRUE the LINE COUNT X4 diagnostic is reset.