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

HURCO FET AMPLIFIER SETUP
ADJUSTMENT PROCEDURE HURCO SERVO AMPLIFIER. .002-1690-001 THRU 003 ASSEMBLIES

TOOLING REQUIREMENTS:
A. DIGITAL VOLT METER.
B. OSCILLOSCOPE, ISOLATED GROUND.

ATTACH AN OSCILLOSCOPE ACROSS MOTOR OUTPUT.

MOVE THE CURRENT LIMIT SWITCH ON THE LOGIC BOARD DOWN TO THE 5 - AMPERE POSITION,

TURN THE RESPONSE CONTROL CLOCKWISE UNTIL THE MOTOR OSCILLATES (MONITOR OSCILLOSCOPE)

THEN TURN THE RESPONSE CONTROL COUNTERCLOCKWISE UNTIL THE OSCILLATION STOPS. AFTER MOTOR OSCILLATION STOPS, TURN THE RESPONSE CONTROL APPROXIMATELY FIVE MORE TURNS COUNTERCLOCKWISE.

MOVE THE CURRENT LIMIT SWITCH BACK UP TO ITS NORMAL POSITION.

CONNECT A DVM ACROSS THE DAC COMMAND SIGNAL.

WITH THE SERVOS ON ADJUST THE BALANCE TO PRODUCE A ZERO READING ON THE DVM. (+- 0.09 VDC)

LEAVE THE DVM CONNECTED ACROSS THE DAC SIGNAL TO ADJUST THE SIGNAL CONTROL

(B CONTROL)- WITH THE AXIS RUNNING AT A FEED RATE OF 25 IPM, ADJUST THE SIGNAL CONTROL TO PRODUCE A .9 VDC (+- 010) READING ON THE DVM.

(BX CONTROL)- WITH THE AXIS RUNNING AT A FEED RATE OF 25 IPM, ADJUST THE SIGNAL CONTROL TO PRODUCE A .65 VDC (+- 010) READING ON THE DVM.

(MAX 1 CONTROL)- WITH THE AXIS RUNNING AT A FEED RATE OF 40 IPM, ADJUST THE SIGNAL CONTROL TO PRODUCE A .9 VDC (+- 010) READING ON THE DVM.

TOOL CALIBRATE, TABLE ZERO. ENSURE THE SCREEN AXIS READING IS 0.0000. (+- .0001).

ENSURE ALL AXIS WILL RAPID TRAVERSE OVER ITS FULL AXIS TRAVEL PLUS AND MINUS DIRECTION.

                                                Copyright © 1996  Accurate Machine Tool Service, Inc.