Rockwell Automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 HP, 115/230 VAC - Manual (Page 66)

3. Set switch 505 (SW505) to ARM for armature
feedback.
4. Apply power to drive.
5. Set the speed adjust potentiometer or external
reference signal to maximum speed.
6. Measure the armature voltage across A1 and A2 using
a voltmeter.
7. Disconnect power from drive.
8. Set the speed adjust potentiometer or external
reference signal to minimum speed.
9. Set SW505 to TACH for tachometer feedback.
10. Set the IR COMP trimpot full CCW.
11. Set the TACH VOLTS trimpot full CW.
12. Apply power to drive.
13. Set the speed adjust potentiometer or external
reference signal to maximum speed.
14. Adjust the TACH VOLTS trimpot until the armature
voltage is the same value as the voltage measured in
step 6.
Check that the TACH VOLTS trimpot is properly
calibrated. The motor should run at the same set speed
when SW505 is set to either armature or tachometer
feedback.
58 Calibration
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