Page 2 - Contents; SAFETY INSTRUCTIONS; ii; Outline
Contents SAFETY INSTRUCTIONS SAFETY INDICATIONS AND THEIR MEANINGS ................................................................... i CAUTIONS WITH REGARD TO SAFETY ................................................................................ ii WARNING LABEL .....................................
Page 3 - Technical Material
10.4 Setting the control box speed setting for the head ............................................. 25 11. Changing the function settings ...................................................................................... 26 11.1 Example for changing the memory switch setting .....................
Page 4 - SAFETY INDICATIONS AND THEIR MEANINGS; WARNING; This symbol is used to indicate general actions which you must do.
i MD-602, 612 Thank you for purchasing this Brother general-purpose sewing machine motor. Before using the motor, please be sure to readthe Safety Instructions and the explanations of how to use the motor which are contained in this manual. Fur thermore, because we are continually improving our prod...
Page 5 - Any fluctuations in the power supply voltage should be within; CAUTION; CAUTIONS WITH REGARD TO SAFETY
ii MD-602, 612 Do not use the motor near sources of strong electrical interference. If the motor is installed in a location which is closeto sources of strong electrical interference such as high-frequency welders, it may cause problems with correct opera-tion of the sewing machine. Disconnect the p...
Page 6 - iii
iii MD-602, 612 3. WARNING LABEL Hazardous voltagewill cause injury. Turn off main switch and wait 5 minutes before opening this cover. Un voltage non adaptprovoque des blessures. Eteindrel’interrupteur et attendre 5 minutes avantd’ ouvrir le capot Hochspannungverletzungsgefahr! Bitte schalten sie d...
Page 7 - Features; The rated output is 400W.; Combination with Brother sewing machines; Lamp terminal block and fuse mounted on control PCB.
1 MD-602, 612 1. Outline 1.1 Features • Thread trimming motor MD602/MD612 is a low-priced version of the MD601/611. • Start tacking (2 to 9 stitches) and end tacking (2 to 9 stitches) are possible even without the operation panel (option). • Voltage specifications for the single-phase 100V system, s...
Page 8 - Operation panel and options; Assembly cord for standing work; Operation panel
2 MD-602, 612 2. Operation panel and options Attachable operation panel F-20 (X-20)F-40 (X-40)F-100 (X-100) Attachable options Standing work pedalMaterial edge sensor (Connect to S2 operation panel and use) (Note 1) A built-in type panel for B737 and an external type (twin needle, etc.) F-panels are...
Page 9 - Model configuration
3 MD-602, 612 Panel Japanese/ Treadle type English type 0 1 5 7 3 8 C External (HB) Japanese English Japanese English D C D Built-in (BI) Maximum rotation speed 0 1000 rpm 1 2000 rpm 3 3000 rpm 4 3500 rpm 5 4000 rpm 6 4500 rpm 7 5000 rpm 8 6000 rpm 9 8000 rpm A 2200 rpm B 2400 rpm C 2600 rpm D 6500r...
Page 10 - Explanation of the name plate; ui; Control box name plate
4 MD-602, 612 4. Explanation of the name plate y production date A January B February C March D April E May F June G July H August J September K October L November M December e maximum speed (rpm) 0 1000 1 2000 2 2500 3 3000 4 3500 5 4000 6 4500 7 5000 8 6000 9 8000 A 2200 B 2400 C 2600 D 6500 * pha...
Page 11 - Installing the motor to the work table
5 MD-602, 612 Hazardous voltagewill cause injury. Turn off main switch and wait 5 minutes before opening this cover. Un voltage non adaptéprovoque des blessures. Eteindrel'interrupteur et attendre 5 minutes avantd' ouvrir le capot Hochspannungverletzungsgefahr! Bitte schalten sie den hauptschalter a...
Page 12 - Adjusting the belt cover safety mechanisms; Adjusting the belt casting prevention guide; Installing the belt cover
6 MD-602, 612 5.5 Adjusting the belt cover safety mechanisms 5.5.1 Adjusting the belt casting prevention guide 1. Loosen the screw q . 2. A mark showing the pulley size is stamped on the belt cover. (The available inner diameters are 90 mm, 105mm and 80 mm.)Adjust the position of the belt casting pr...
Page 13 - Connecting the cords; Connecting the sewing machine and control box
7 MD-602, 612 Hazardous voltagewill cause injury. Turn off main switch and wait 5 minutes before opening this cover. Un voltage non adaptéprovoque des blessures. Eteindrel'interrupteur et attendre 5 minutes avantd' ouvrir le capot Hochspannungverletzungsgefahr! Bitte schalten sie den hauptschalter a...
Page 14 - For machine solenoid
8 MD-602, 612 Note:The puller output is output from the option output during machine operation with thesettings made at shipment from the factory.Note the following points when connecting to the option output terminals. a. Connect a solenoid or air valve with a resistance of 10 Ω or greater. b. The ...
Page 16 - Adjusting the treadle unit; Operating the treadle; For treadles with one forward and one rear stage
10 MD-602, 612 q w e Thread trimming r 6. Adjusting the treadle unit 6.1 Operating the treadle • There are two types of treadles, one with one forward and one rear stage and one with two forward and two rearstages. These are provided according to the destination of the machine. 6.1.1 For treadles wi...
Page 17 - For treadles with two forward and two rear stages
11 MD-602, 612 Take your foot off the treadle before turning on the power switch. CAUTION 6.1.2 For treadles with two forward and two rear stages 1. The treadle is at the neutral position q when the treadle is not pressed. 2. When the treadle is gently depressed to position w , low-speed sewing is c...
Page 18 - Adjusting the treadle; Adjusting the treadle stroke
12 MD-602, 612 a b c e q r y w 6.3 When using the automatic presser foot lifterdevice 1. When the treadle is depressed to position r , the presser foot is raised. 2. If you would like the treadle pressure to be lighter when it is depressed forward from the 2nd step to the 1ststep, change the positio...
Page 19 - C O N T R O L B O X; Using the control box; Before turning on the power switch; Power switch and power indicator
13 MD-602, 612 M D - 6 0 2 - 1 C O N T R O L B O X T Y P E B C 4 6 7 0 N O . B 0 1 9 A 1 1 0 1 S I N G L E P H A S E O U T P U T 4 0 0 W V O L T S 2 2 0 2 3 0 2 4 0 H E R T Z 5 0 / 6 0 F O R M D - 6 0 A M A D E I N J A PA N B R O T H E R I N D U S T R I E S , LT D . 7. Using the control box 7.1 Befo...
Page 20 - Control box DIP switch setting procedure
14 MD-602, 612 Hazardous voltagewill cause injury. Turn off main switch and wait 5 minutes before opening this cover. Un voltage non adaptéprovoque des blessures. Eteindrel'interrupteur et attendre 5 minutes avantd' ouvrir le capot Hochspannungverletzungsgefahr! Bitte schalten sie den hauptschalter ...
Page 21 - Description of functions
15 MD-602, 612 7.5.1.1 Start backtacking function When the start backtack key q is pressed, the start backtack LED e lights and start backtacking can be carried out. When the start backtack key q is pressed once more, the start backtack LED e switches off and start backtacking can no longer be carri...
Page 23 - Periodic checks
17 MD-602, 612 Speed (rpm) 1,000 2,000 2,500 3,000 3,500 4,000 4,500 4,700 DIP switch (5,000) (5,500) (6,000) (6,500) (7,000) (7,500) (8,000) (8,500) SW1-6 OFF ON OFF ON OFF ON OFF ON SW1-7 OFF OFF ON ON OFF OFF ON ON SW1-8 OFF OFF OFF OFF ON ON ON ON Pulley diameter 105 mm for single-needle machine...
Page 24 - Connecting options; Connecting the pedal for standing operations
18 MD-602, 612 8. Connecting options The options include the operation panel, pedal for standing operation and the material edge sensor. Refer to “5.8 Con-necting the external operation panel” for the operation panel connection methods. Refer to each respective instructionmanual for details on the o...
Page 25 - Connector wiring diagram; TWO SPEED PEDAL
19 MD-602, 612 • Connector wiring diagram VARIABLE-SPEED PEDAL TWO SPEED PEDAL When the switch for the target function has been turned ON, turn the other OFF. HIGH. S +8V 0V TRIMMER LIFT INPUT HIGH. S +8V LIFT TRIMMER LOW. S
Page 26 - Connecting the material edge sensor
20 MD-602, 612 8.2 Connecting the material edge sensor 1. Remove the operation panel q from the machine. 2. Insert the sensor II connector e into connector w in the operation panel. 3. Using a mounting bracket r , screw the sensor II t onto the machine. 4. Install the operation panel q onto the mach...
Page 27 - Using the operation panel F-40; Part names and functions; y u o; Key name
21 MD-602, 612 9. Using the operation panel F-40 ★ Key operations and the number of stitches set cannot be changed during sewing. Be sure to confirm all key settingsand the number of stitches before starting to sew. Note that the end backtacking feature can be set and canceledwhile sewing. ★ For key...
Page 29 - Changing the head settings; Setting the motor pulley size and DIP switches for the head; Setting the DIP switch maximum speed setting for the head; Head
23 MD-602, 612 10. Changing the head settings When using a motor for a different head than the default head, change the settings with the following procedures.(Note) The operation panel F-40 or F-100 is required. 10.1 Setting the motor pulley size and DIP switches for the head Head Pulley size SW1, ...
Page 30 - Setting the control box head setting for the head; Setting procedure
24 MD-602, 612 1000 rpm 2500 rpm 3500 rpm 2000 rpm 3000 rpm 4000 rpm Twin needle sewing machine (SW1-5 = ON) Head High speed DIP switch (SW1-6, 7, 8) setting B842-3 4000 Set 2200 rpm and 2400 rpm to 2500 rpm. B842-5 3500 Set 2600 rpm to 3000 rpm. B842-1 4000 B872 3000 B845 3000 B847 4000 B848 3000 B...
Page 31 - Setting the control box speed setting for the head; S P
25 MD-602, 612 10.4 Setting the control box speed setting for the head Change the speed setting for the following head settings highlighted in gray. (1) Single needle Head Inching Thread Slow Start End Improved speed trimming speed backtacking backtacking stopping [Lo] speed [tr] [SL] speed [Li] spe...
Page 32 - Changing the function settings; Example for changing the memory switch setting; Example for changing the parameter settings; setting will be completed.
26 MD-602, 612 11. Changing the function settings The function settings can be changed by changing the memory switch settings.The operation timing, etc., can be changed by changing the parameter settings. (Note) Operation panel F-40 or F-100 is required. 11.1 Example for changing the memory switch s...
Page 33 - Move the set screws
27 MD-602, 612 12. Adjustments 12.1 Synchronizer Model DB2-B737 · B748 · B774 · B791 Higher Lower Needle up stop Needle down stop 18-22mm Thin, regular materials: 10-12mmThick materials: 10-14mm 0.5mm Referenceline w q q ★ The synchronizer detects the needle position with two sensors.The thread trim...
Page 34 - Troubleshooting guide; FU
28 MD-602, 612 13. Troubleshooting guide • If there seems to be a malfunction, first check the machine as described below. If the problem remains unresolved,turn off the power and contact your nearest Brother dealer.When using a model with the operation panel if an error displays on the operation pa...
Page 36 - Error display and details
30 MD-602, 612 13.1 Error display and details If an error occurs, an error code, etc., will display on the counter section of the operation panel.If the error display flickers, check the contents, turn the power switch OFF and remove the cause. Then, turn the power ONagain. Pt ou oL Lo FU Pd E0 E1 P...
Page 37 - Control box troubleshooting guide; Power PCB
31 MD-602, 612 13.2 Control box troubleshooting guide Power PCB PROBLEM CHECK PROBABLE CAUSE REMEDY When power SW is ON, LED(Red) does not illuminate. Fuse F101, F102 blown? Short circuit of the load on thepower circuit. Something wrongwith BD101? IPM? ZR? C101–C103,C111–C113?Power transformer? Do n...
Page 38 - Control PCB; Check transistor for solenoid; Power transformer; Replace transformer
32 MD-602, 612 Control PCB When power is ON, an errorsign FU appears. 8A fuse blown? 8A fuse OK? Check transistor for solenoid Check power transformer Replace fuse Replace control PCB Something is wrong withthe operation of sewinghead and motor. Power transformer When power SW is ON, LED(Red) does n...
Page 41 - Stroke – rpm chart
35 MD-602, 612 Stroke – VC (analog voltage) Chart Stroke – rpm chart
Page 42 - Explanation of each mode; Initialization mode
36 MD-602, 612 15. Explanation of each mode Besides the normal stitching mode, the head setting mode, initialization mode, and memory switch setting mode, etc., canbe entered using the operation panel and various settings can be made. (If the power switch is turned ON while holdingdown the designate...
Page 43 - Head setting mode; Stitching mode
37 MD-602, 612 15.2 Head setting mode Before the motor is shipped from the factory, the motor product code is determined for each head and is set to match thespecifications of the head. If the motor is to be used for another head, replace the pulley with an appropriate one, andselect the head No. wi...
Page 44 - Memory switch setting mode and parameter setting mode, etc.
38 MD-602, 612 15.3 Memory switch setting mode and parameter setting mode, etc. A memory switch mode for changing the functions and a parameter mode where the time and timing, etc., can be changedare provided. When the [ ] key is pressed while holding down the [ ] key, the setting menu [ d S ] displ...
Page 46 - Stitching speed setting mode
40 MD-602, 612 15.4 Stitching speed setting mode Each speed can be changed as described below by using the stitching speed setting mode. q Setting of each stitching speed. Normally, each speed determined by the product code corresponding to the head is set at the factory. To change thespeeds, use th...
Page 47 - Operational instructions; When the power SW is ON; This motor has no special processes when the power is OFF.; Operation of the pedal; P t
41 MD-602, 612 16. Operational instructions 16.1 When the power SW is ON • The motor power is created with the rectifying circuit and smoothing capacitor on the power PCB. To suppress the rushcurrent, the smoothing capacitor is charged through the resistor. After charging, the relay contact closes a...
Page 48 - Memory switch list; o t
42 MD-602, 612 17. Memory switch list * The shaded fields indicate the default values. 0102030405060708 1 1 1 2 1 31 41 5 1 8 1 7 1 6 Display No. SW Item & Contents ON Parameter setting change enabled (Parameter setting mode can be entered) OFF Parameter setting change disabled (Parameter settin...
Page 54 - Cb
48 MD-602, 612 Display No. Initial data Data setting Detailes range 00 00 to 99 No. of stitches to puller lower (stitch) (stitch) (Memory swtches [71]-[78] all OFF, factory setting) 10 00 to 99 No. of option output ON stitches (N) (stitch) (stitch) (When memory switch [73] is set to ON) 05 00 to 90 ...
Page 56 - Starting time (When the numerical value is small, the motor will
50 MD-602, 612 Display No. Initial data Data setting Detailes range 10 07 to 50 ( × 10) Starting time (When the numerical value is small, the motor will (100ms) (70 to 500ms) start up faster) 10 07 to 50 ( × 10) Stopping time (When the numerical value is small, the motor will (100ms) (70 to 500ms) s...
Page 57 - Panel display table; ON
51 MD-602, 612 19. Panel display table The following alphabetic characters and symbols are displayed on the operation panel. 7-segment display 7-segment display 7-segment display 7-segment display 0 0 A A N n ON @ 1 1 B B O o OFF o 2 2 C C P P 3 3 D d Q Q 4 4 E E R r 5 5 F F S S 6 6 G G T t 7 7 H H ...
Page 58 - How to remove the control box; . Disconnect the cords from the machine and panel.
52 MD-602, 612 Hazardous voltagewill cause injury. Turn off main switch and wait 5 minutes before opening this cover. Un voltage non adaptéprovoque des blessures. Eteindrel'interrupteur et attendre 5 minutes avantd' ouvrir le capot Hochspannungverletzungsgefahr! Bitte schalten sie den hauptschalter ...
Page 76 - Printed in Japan
BROTHER INDUSTRIES, LTD. NAGOYA, JAPAN Printed in Japan J90113-001 2001. 06.
