Clinton 970 Service Manual

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ML970-3

CLINTON

MODEL 970

VARIABLE SPEED

DC SERVO MOTOR

NEEDLE POSITIONER THREAD TRIMMER

SERVICE MANUAL

40-0258-01

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Summary of Contents for Clinton 970

Page 1 ML970-3 CLINTON MODEL 970 VARIABLE SPEED DC SERVO MOTOR NEEDLE POSITIONER THREAD TRIMMER SERVICE MANUAL 40-0258-01...
Page 2: Table Of Contents
® ML970-4 TABLE OF CONTENTS SECTION INTRODUCTION ........SECTION INSTALLATION .
Page 3: Sectionv
DISPLAY CONTROL BOX The model 970 has outputs for a trimmer, footlift, wiper and needle cooler. It can be used to operate all Clinton trimmers, as well as the Singer, Union Special, Pfaff, Juki and Brother undertrimmers and chain stitch machines.
Page 4 ® ML970-6 SECTION II INSTALLATION A. MOTOR INSTALLATION 1. Remove the handwheel from the machine. 2. Remove the four screws that hold the bearing housing to the machine, see ML970-15. Attach the sewing head mounting plate, 02-4108-01 to the machine with the screws provided 30-1210-01.
Page 5: Power And Cable Connections
® ML970-7 C. SWITCH BOX Install switch box at a convenient location under the table. See fig. 2-3. Fig. 2-3 D. POWER AND CABLE CONNECTIONS Refer to figure 2-4 and connect all cables as shown. The system can be operated from 230V, 3 phase or 230V, single phase power.
Page 6: Teach-In Mode
® ML970-7-1 F. TEACH-IN MODE (SETTING THE NEEDLE UP, NEEDLE DOWN AND TRIM POSITIONS) Note: The index signal from the motor must be set prior to setting the needle up and down posi- tions. (See systems test section for instruction on setting the index signal). 1.
Page 7: Programmable Lcd Display
ML970-8 SECTION III PROGRAMMABLE LCD DISPLAY The LCD display, shown in fig. below is used to program and set the various parameters of the 970; SPEEDS, TIMERS, COUNTERS, and TOGGLE SWITCHES. Two (2) different modes of operation are available. They are: 1.
Page 8: Hidden Parameters
® ML970-9 TABLE 3-1 PARAMETER DESCRIPTION DEFAULT RANGE SPEED GROUP SOFTSTRT Sets the RPM of the machine while in the soft 140-2000 start option. TIMER GROUP START DEL Delays machine start to allow presser foot to 10-500 drop. TRIM TIME Sets the amount of time that the trimmer is on.
Page 9: Master Reset
® ML970-10 C. MASTER RESET In some cases it may be necessary to reset all parameters to their default values. This is done as follows: 1. Turn power off, if it is on, then wait until the display goes blank. 2.
Page 10: Treadle Test
® ML970-11 SECTION IV TEST MODE A. BUILT-IN TEST PROGRAM A test program is available to test the major functions for a proper operation. To access the program press the buttons simultaneously. The display will read "SYSTEM TEST" briefly then press "SET", after which the following may be tested: TREADLE, INDEX SIGNAL, ENCODER, MOTOR BALANCE 1.
Page 11: Connector Diagrams
® SECTION V ML970-12 CONNECTOR DIAGRAMS Listed below are the pinouts for the Model 970 control box connectors. TOTAL PINS CONNECTOR PIN NO. FUNCTION ------------- NOT USED ----------------- NOT USED AUX INPUTS CHASSIS GND AUX OUTPUTS +48 V +48 V FOOTLIFT FOOTLIFT SOL.
Page 12 ® ML970-13 TOTAL PINS CONNECTOR PIN NO. FUNCTION ENCODER ENCODER (S1) ENCODER (S2) SIG. GND PHASE C PHASE B PHASE A INDEX LCD DISPLAY EXT1 CHASSIS GND AC POWER 220V 3 PHASE A PHASE B PHASE C CHASSIS GND MOTOR VOLTAGE PHASE A PHASE B PHASE C...
Page 13 ® SECTION VI ML970-14 DRAWINGS AND PARTS LIST MODEL 970 A. MAJOR ASSEMBLIES 81-0871-45 MINI-TAURUS 30-4400-01 SWITCH BOX 30-4317-01 LCD DISPLAY 81-0904-01 CONTROL BOX...
Page 17 F. MISCELLANEOUS PART G. E-PROM Most of the E-proms used in Clinton's Mini-Taurus are Cmos devices, thus subject to being dam- aged by electrostatic discharges. Proper grounding practices should be followed when handling and replacing them. Refer to figure below when replacing the E-prom.