P/N 92974, Rev. 1 Page 141
APPENDIX D SERVO CONTROLS ADJUSTMENT
This procedure applies only to the BB5000 servo controls (MR-J3), for the purpose of manually adjusting the
parameter in order to reset the motor zero speed.
When a new servo amplifier has been installed and the motor does not stop when the speed control knob is
turned to zero, do the following:
1. Carefully connect the system components (such as the pendant cable and pendant, motor cables, and
servo motor).
2. Remove the top cover of the main control box.
Leave the servo motor assembly on the ground or work bench. Do not install it on the
boring bar.
3. Connect the main control box to power and turn on the
system.
4. Select the rotation direction for the motor and press the
START button.
5. Increase the motor speed to full speed by turning the speed
knob clockwise on the operator pendant.
6. Reduce speed to zero by turning the knob fully counter-
clockwise.
7. Open the cover to access the function keys on the servo
amp. See Figure D-1.
8. Press the mode button repeatedly until the display reads P
.C01.
9. Press the UP button repeatedly until the display reads P
.C37.
10. Press the SET button twice. The current setting for P .C37 will be flashing. Adjust up or down by 4
points, then press the SET button once more.
11. Recheck the motor speed with the speed control knob set to zero.
• If the motor shaft is not moving and the stop button on the pendant is illuminated, no further
adjustment is necessary.
• If the motor is still moving slowly in either direction, repeat step 5 in small increments until the
motor remains stopped when the speed control is turned down to zero. The final setting on the dis-
play may be as much as ±12 when the motor finally stops with the speed control knob turned to
zero.
12. Switch off the mains power and secure the top plate of the main control box by reinstalling the
screws.
FIGURE D-1. SERVO AMP FUNCTION KEYS
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