Delta RMC101 - Manual (Page 813)

Appendix C: Parameter Field Reference
C-43
Degrees 360
Tenths of a degree 3600
Hundredths of a degree 36000
Thousandths of a rev. 1000
Ten-thousandths of a rev. 10000
For a full discussion, including examples, on scaling with stepper modules, see Stepper Scaling.
C.3.11 Quad Cnts/Rev
Default: 1
Range: -32768 to 32767
This parameter is available on stepper axes only. It is used with the Pos Units/Rev parameter to
determine the scaling between position units and quadrature counts. If the quadrature feedback is
not being used, enter a zero for this parameter. This will make the Actual Position always match
the Target Position, therefore eliminating the Following Error.
The sign of this parameter determines whether increasing quadrature counts (phase A leading
phase B) translates to increasing or decreasing the current position:
Sign Increasing quadrature counts means…
+ …increasing positions
- …decreasing positions
The use of this parameter is summarized by the following equation, which is applied every control
loop to convert the incoming quadrature counts to an Actual Position in user-defined position
units.
As the name implies, the recommended value to enter in this parameter is the number of
quadrature counts generated in a single revolution of the motor. Therefore, for a 1000-line
encoder mounted on the same shaft as the motor, you would enter 4000 in this parameter since
there are 4000 quadrature counts per revolution on a 1000-line encoder. However, this becomes
more complicated if the quadrature feedback is on another shaft that is mechanically geared to
the motor shaft with a ratio other than 1:1. For a full discussion, including examples, on scaling
with stepper modules, see Stepper Scaling.
C.3.12 Max Steps/MSec
Default: 1024