CONTREX CX-1200 - Manual (Page 85)

4 - 10
CREEP CALIBRATION
The Creep Calibration allows you to eliminate motion that may occur with an open loop stop (zero volt)
Control Output. Make sure the unit is in F-Stop to start out.
1. Go to the Setpoints & Ramps/Direct SP & Ramps/P1/1 screen and select Direct Mode
by entering a 1 into the RUN Mode (CP-202) parameter. You can use the Help screen for
CP-202 to select Direct Mode.
2. Make sure the Direct SP (CP-230) = 0.0 (include the decimal point).
3. Put the unit into RUN by activating the RUN input. The F-Stop, R-Stop, and H-Stop inputs
must be closed in order to enter the RUN State. You should have the Drive Enable output
connected to the drive enable input of your drive (or to a control relay that is connected to the
Drive Enable input). If not, enable the drive by some external means.
4. If motion occurs, attempt to eliminate it (stop the motion) with the balance pot (also called
zero-speed pot) or digital adjustment in your drive. If there is no pot (or digital adjustment) in
the drive, or if the motion can not be stopped, attempt to use the CO Offset (CP-273)
parameter to "offset" the creep for the drive. Be sure to record this parameter and/or make
sure it gets into the backup parameter list at some point.