22 Adjustments
2. Set the Main Speed dial potentiometer to approximately 30% to
50%.
3. Set the CL trimpot fully clockwise. The CL LED will illuminate red.
4. Lock the motor shaft. Important: Be sure the CL trimpot is set fully
clockwise and do not lock the motor shaft more than 2 to 3 seconds
or motor damage may result.
5. Apply power and rotate the CL trimpot clockwise until the desired
current reading is observed on the ammeter. Factory current limit
setting is 1.5 times the full load rating of the motor with a DC
ammeter connected in series with the motor armature. (If using an
AC ammeter connected in the AC line input, the factory current limit
setting will read 0.75 times the full load rating of the motor.) Do not
exceed 2 times the motor current rating (maximum clockwise
position).
IR Compensation Trimpot (IR)
When adjustment of the controller board is complete, it is necessary to
reattach the controller box front cover. Slide the front cover in place to
cover the controller box and re-use the two (2) #6-32 screws to fasten
the front cover in place to the control box.
To Recalibrate the IR Compensation (IR) Trimpot
1. Set the IR trimpot to approximately 25% of rotation.
2. Run the motor with no load at approximately 1/3 speed and record
the RPMs.
3. Run the motor with the maximum load and adjust the IR trimpot so
that the motor speed under load is equal to the unloaded speed
recorded in step 2 above.
4. Remove the load and recheck the RPMs
5. If the unloaded RPM has changed, repeat steps 2 through 4 for
more precise regulation. The control is now compensated to provide
minimal speed change with varying loads.
When adjustment of the controller board is complete, it is necessary to reattach the
controller box front cover. Slide the front cover in place and cover the controller board
and terminals and re-use the two (2) #6-32 screws to fasten the front cover in place to
the control box.
For more detailed information refer to instructions in the previous pages or refer to the
KBMD-230D™ Multi-Drive Controller Board Installation and Operation Manual, provided
by the D.C. board manufacturer
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Summary of Contents for TT Series
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