ACCURATE MACHINE TOOL SVC, INC. 770-995-0461
www.amtsinc.com

RANDTRONICS AMPLIFIER SETUP

Each type machine will be adjusted differently than others. Make the following pot adjustments on your amp then find the section that pertains to your machine to complete the setup.

Pot Presets - All Machines

AUX 20-CCW
CLM 20-CW
BALANCE 20-CW then 10-CCW

Pot Presets and Adjustments per Machine Type

All Machines with 'B' Control (.001 resolution)

SIGNAL 20-CW then 5-CCW
TACH 20-CW
GAIN 20-CW then 5-CCW

Adjust GAIN until the motor starts to oscillate. If oscillation cannot be heard, then monitor armature voltage on motor with scope. Turn GAIN CCW until oscillation stops, then turn an additional 5-CCW.

Program machine to move back and forth at 25 IPM on axis to be adjusted, then monitor DAC command to amplifier with digital voltmeter. Adjust SIGNAL pot to achieve .9 volts dc in both directions. Use BALANCE pot to adjust difference from one direction to another. You can fine tune the balance by monitoring the control display, and adjusting the pot until the numbers on the screen stop toggling.

All Machines with 'BX' Control (.0001 resolution) and Black & Silver Motors

SIGNAL 20-CW then 5-CCW
TACH 20-CW
GAIN 20-CW then 5-CCW

Adjust GAIN until the motor starts to oscillate. If oscillation cannot be heard, then monitor armature voltage on motor with scope. Turn GAIN CCW until oscillation stops, then turn an additional 5-CCW.

Program machine to move back and forth at 25 IPM on axis to be adjusted, then monitor DAC command to amplifier with digital voltmeter. Adjust SIGNAL pot to achieve .65 volts dc in both directions. Use BALANCE pot to adjust difference from one direction to another. You can fine tune the balance by monitoring the control display, and adjusting the pot until the numbers on the screen stop toggling.

All Machines with 'BX' Control (.0001 resolution) and Black Motors

SIGNAL 20-CW
TACH 20-CW
GAIN 20-CW then 6-CCW

Adjust GAIN until the motor starts to oscillate. If oscillation cannot be heard, then monitor armature voltage on motor with scope. Turn GAIN CCW until oscillation stops, then turn an additional 5-CCW.

Program machine to move back and forth at 25 IPM on axis to be adjusted, then monitor DAC command to amplifier with digital voltmeter. Adjust TACH pot to achieve .65 volts dc in both directions. Use BALANCE pot to adjust difference from one direction to another. You can fine tune the balance by monitoring the control display, and adjusting the pot until the numbers on the screen stop toggling.

KM3 & MD1 Machines with 'MAX' Control

SIGNAL 20-CW
TACH 20-CW then 8-CCW
GAIN 20-CW then 9-CCW

Adjust GAIN until the motor starts to oscillate. If oscillation cannot be heard, then monitor armature voltage on motor with scope. Turn GAIN CCW until oscillation stops, then turn an additional 3-5-CCW.

Program machine to move back and forth at 40 IPM on axis to be adjusted, then monitor DAC command to amplifier with digital voltmeter. Adjust TACH pot to achieve .8 volts dc in both directions. Use BALANCE pot to adjust difference from one direction to another. You can fine tune the balance by monitoring the control display, and adjusting the pot until the numbers on the screen stop toggling.

MD3 Machines with 'MAX' Control (X & Y AXIS)

SIGNAL 20-CW then 8-CCW
TACH 20-CW then 4-CCW
GAIN 20-CW then 5-CCW

Adjust GAIN until the motor starts to oscillate. If oscillation cannot be heard, then monitor armature voltage on motor with scope. Turn GAIN CCW until oscillation stops, then turn an additional 3-5-CCW.

Program machine to move back and forth at 40 IPM on axis to be adjusted, then monitor DAC command to amplifier with digital voltmeter. Adjust TACH pot to achieve .8 volts dc in both directions. Use BALANCE pot to adjust difference from one direction to another. You can fine tune the balance by monitoring the control display, and adjusting the pot until the numbers on the screen stop toggling.

MD3 Machines with 'MAX' Control (Z AXIS)

SIGNAL 20-CW
TACH 20-CW
GAIN 20-CW then 5-CCW

Adjust GAIN until the motor starts to oscillate. If oscillation cannot be heard, then monitor armature voltage on motor with scope. Turn GAIN CCW until oscillation stops, then turn an additional 3-5-CCW.

Program machine to move back and forth at 40 IPM on axis to be adjusted, then monitor DAC command to amplifier with digital voltmeter. Adjust TACH pot to achieve .8 volts dc in both directions. Use BALANCE pot to adjust difference from one direction to another. You can fine tune the balance by monitoring the control display, and adjusting the pot until the numbers on the screen stop toggling.

BMC10 & 15 Machines with 'MAX' Control

SIGNAL 20-CW
TACH 20-CW
GAIN 20-CW then 9-CCW

Adjust GAIN until the motor starts to oscillate. If oscillation cannot be heard, then monitor armature voltage on motor with scope. Turn GAIN CCW until oscillation stops, then turn an additional 3-5-CCW.

Program machine to move back and forth at 40 IPM on axis to be adjusted, then monitor DAC command to amplifier with digital voltmeter. Adjust TACH pot to achieve .8 volts dc in both directions. Use BALANCE pot to adjust difference from one direction to another. You can fine tune the balance by monitoring the control display, and adjusting the pot until the numbers on the screen stop toggling.

NOTE: BMC 15 machines may use SIGNAL and TACH for adjustments of DAC.

                                                    Copyright © 1996  Accurate Machine Tool Service, Inc.