Parker AC890 Product Manual page 414

Parameter Descriptions
* LOAD POSITION
This diagnostic provides the motor load position (after the gear box).
* The output gearbox functions LOAD POSITION, OUTPUT GBOX IN and OUTPUT GBOX OUT are intended to apply to
the feedback encoder, to allow the user to keep track of the speed and position of a load attached to the motor via a gearbox.
It will not normally be applicable to the reference encoder. However, the parameters are included here because it is possible
that the reference encoder may be derived from a motor with a gearbox. In this case it may be desirable to use the load
position as the reference. These parameters will make it possible to do this.
REV COUNT
This counts the number of turns of the encoder input. It will normally start from zero on power-up. If a multi-turn Endat
encoder is fitted, REV COUNT will be made to match the multi-turn encoder rev count. However, it will continue to count
beyond the Endat range of 0 to 4095 revs. It will count to the limits of a 32 bit number, but the lower 12 bits will be equal to
the endat rev count.
CALIBRATN STATUS
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.
890SD Standalone Drive - Frames G, H & J
PREF: 158.10
PREF: 158.15
PREF: 158.13
Default: —.xx deg
Default: 0
Default: 0
Range: —.xx deg
Range: —.
Range: see below
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