Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
DIRECT DRIVE
PROGRAMMABLE ELECTRONIC PATTERN SEWER
Thank you very much for buying a BROTHER sewing machine. Before using your new machine,
please read the safety instructions below and the explanations given in the instruction manual.
With industrial sewing machines, it is normal to carry out work while positioned directly in front of
moving parts such as the needle and thread take-up lever, and consequently there is always a
danger of injury that can be caused by these parts. Follow the instructions from training personnel
and instructors regarding safe and correct operation before operating the machine so that you will
know how to use it correctly.
BAS-311HN, BAS-326H
SAFETY INSTRUCTIONS
[1] Safety indications and their meanings
This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure
safe operation of this machine and to prevent accidents and injury to yourself or other people.
The meanings of these indications and symbols are given below.
Indications
DANGER
The instructions which follow this term indicate situations where failure to follow the
instructions will result in death or serious injury.
WARNING
CAUTION
Symbols
・・・・・・
・・・・・・
・・・・・・
The instructions which follow this term indicate situations where failure to follow the
instructions could result in death or serious injury.
The instructions which follow this term indicate situations where failure to follow the
instructions may result in minor or moderate injury.
This symbol ( ) indicates something that you should be careful of. The picture inside the triangle
indicates the nature of the caution that must be taken.
(For example, the symbol at left means “beware of injury”.)
This symbol ( ) indicates something that you must not do.
This symbol ( ) indicates something that you must do. The picture inside the circle indicates the
nature of the thing that must be done.
(For example, the symbol at left means “you must make the ground connection”.)
BAS-311HN, BAS-326H
i
[2] Notes on safety
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet
before opening the control box cover. Touching areas where high voltages are present can result in severe injury.
Do not allow any liquids to get onto this sewing machine, otherwise fire, electric shocks or operating problems may
occur.
If any liquid gets inside the sewing machine (machine head or control box), immediately turn off the power and
disconnect the power plug from the electrical outlet, and then contact the place of purchase or a qualified
technician.
DANGER
WARNING
CAUTION
Environmental requirements
Use the sewing machine in an area which is free from
sources of strong electrical noise such as electrical
line noise or static electric noise.
Sources of strong electrical noise may cause
problems with correct operation.
Any fluctuations in the power supply voltage should
be within ±10% of the rated voltage for the machine.
Voltage fluctuations which are greater than this may
cause problems with correct operation.
The power supply capacity should be greater than the
requirements for the sewing machine's power
consumption.
Insufficient power supply capacity may cause
problems with correct operation.
Do not connect anything to the USB port other than
the USB memory. If this is not observed, problems
with operation may result.
Installation
Machine installation should only be carried out by a
qualified technician.
Contact your Brother dealer or a qualified electrician
for any electrical work that may need to be done.
The sewing machine weighs approximately 88 kg.
The installation should be carried out by three or
more people.
Do not connect the power cord until installation is
complete. If the foot switch is depressed by mistake,
the sewing machine might start operating and injury
could result.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
Furthermore, do not apply excessive force when
tilting back the machine head. The sewing machine
may become unbalanced and fall down, and serious
injury or damage to the sewing machine may result.
Be sure to connect the ground. If the ground
connection is not secure, you run a high risk of
receiving a serious electric shock, and problems with
correct operation may also occur.
The pneumatic delivery capability should be greater
than the requirements for the sewing machine's total
air consumption.
Insufficient pneumatic delivery capability may cause
problems with correct operation.
The ambient temperature should be within the range
of 5°C to 35°C during use.
Temperatures which are lower or higher than this
may cause problems with correct operation.
The relative humidity should be within the range of
45% to 85% during use, and no dew formation should
occur in any devices.
Excessively dry or humid environments and dew
formation may cause problems with correct operation.
In the event of an electrical storm, turn off the power
and disconnect the power cord from the wall outlet.
Lightning may cause problems with correct operation.
All cords should be secured at least 25 mm away
from any moving parts. Furthermore, do not
excessively bend the cords or secure them too firmly
with staples, otherwise there is the danger that fire or
electric shocks could occur.
Install the safety covers to the machine head and
motor.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they
do not get into your eyes or onto your skin. If the oil
and grease get into your eyes or onto your skin,
inflammation can result.
Furthermore, do not drink or eat the lubricating oil or
grease. They may cause diarrhea or vomiting.
Keep the oil out of the reach of children.
ii
BAS-311HN, BAS-326H
CAUTION
Sewing
To prevent problems, do not use objects with sharp
points to operate the LCD panel.
This sewing machine should only be used by
operators who have received the necessary training
in safe use beforehand.
The sewing machine should not be used for any
applications other than sewing.
Be sure to wear protective goggles when using the
machine.
If goggles are not worn, there is the danger that if a
needle breaks, parts of the broken needle may enter
your eyes and injury may result.
Turn off the power switch at the following times. If the
foot switch is depressed by mistake, the sewing
machine might start operating and injury could result.
• When replacing the bobbin and needle
• When not using the machine and when leaving the
machine unattended
Cleaning
Turn off the power switch before carrying out
cleaning. If the foot switch is depressed by mistake,
the sewing machine might start operating and injury
could result.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Attach all safety devices before using the sewing
machine. If the machine is used without these
devices attached, injury may result.
Do not touch any of the moving parts or press any
objects against the machine while sewing, as this
may result in personal injury or damage to the
machine.
If an error occurs in machine operation, or if abnormal
noises or smells are noticed, immediately turn off the
power switch. Then contact your nearest Brother
dealer or a qualified technician.
If the machine develops a problem, contact your
nearest Brother dealer or a qualified technician.
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they
do not get into your eyes or onto your skin. If the oil
and grease get into your eyes or onto your skin,
inflammation can result.
Furthermore, do not drink or eat the lubricating oil or
grease. They may cause diarrhea or vomiting.
Keep the oil out of the reach of children.
Maintenance and inspection
Maintenance and inspection of the sewing machine
should only be carried out by a qualified technician.
Ask your Brother dealer or a qualified electrician to
carry out any maintenance and inspection of the
electrical system.
Turn off the power switch and disconnect the power
cord before carrying out the following operations. If
the foot switch is depressed by mistake, the sewing
machine might start operating and injury could result.
• Inspection, adjustment and maintenance
• Replacing consumable parts such as the rotary
hook
Disconnect the air hoses from the air supply and wait
for the needle on the pressure gauge to drop to “0”
before carrying out inspection, adjustment and repair
of any parts which use the pneumatic equipment.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
Furthermore, do not apply excessive force when
tilting back the machine head. The sewing machine
may become unbalanced and fall down, and serious
injury or damage to the sewing machine may result.
If the power switch needs to be left on when carrying
out some adjustment, be extremely careful to observe
all safety precautions.
When replacing parts and installing optional
accessories, be sure to use only genuine Brother
parts.
Brother will not be held responsible for any accidents
or problems resulting from the use of non-genuine
parts.
If any safety devices have been removed, be
absolutely sure to re-install them to their original
positions and check that they operate correctly before
using the machine.
To prevent accidents and problems, do not modify
the machine yourself.
Brother will not be held responsible for any accidents
or problems resulting from modifications made to the
machine.
BAS-311HN, BAS-326H
iii
[3] Warning labels
The following warning labels appear on the sewing machine.
Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are
difficult to read, please contact your nearest Brother dealer.
1
2
3
4
Be careful not to get your hand caught when tilting back
the machine head and returning it to its original position.
Be sure to connect the ground.
If the ground connection is not secure, you run a high
risk of receiving a serious electric shock, and problems
with correct operation may also occur.
.
*Safety devices
Devices such as eye guard, finger guard,
thread take-up cover, side cover,
rear cover, solenoid cover, inner cover,
outer cover, fixed cover and gas spring
support cover
8
5
6
7
iv
Direction of operation
Be careful to avoid injury from moving parts.
Do not hold, otherwise problems with
operation or injury may occur.
Machine installation should only be carried out by a
qualified technician.
Contact your Brother dealer or a qualified electrician
for any electrical work that may need to be done.
The sewing machine head weighs approximately
88kg. The installation should be carried out by three or
more people.
Do not connect the power cord until installation is
complete.
If the foot switch is depressed by mistake, the sewing
machine might start operating and injury could result.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
Furthermore, do not apply excessive force when tilting
back the machine head. The sewing machine may
become unbalanced and fall down, and serious injury
or damage to the sewing machine may result.
All cords should be secured at least 25 mm away from
any moving parts. Furthermore, do not excessively
bend the cords or secure them too firmly staples,
otherwise there is the danger that fire or electric
shocks could occur.
Be sure to connect the ground. If the ground
connection is not secure, you run a high risk of
receiving a serious electric shock, and problems with
correct operation may also occur.
Install the safety covers to the machine head and
motor.
3-1. Table processing diagram
• The thickness of the table should be at least 40 mm, and it should be strong enough to bear the weight and vibration of the
sewing machine.
• Check that the control box is at least 10 mm away from the leg. If the control box and the leg are too close together, it may result
in incorrect sewing machine operation.
BAS-311HN, BAS-326H
3679B
3
3. INSTALLATION
3-2. Installing the control box
Operator
3-3. Installing the oil pan
Remove the six screws (1), and then
remove the control box cover (2).
(3) Control box
(4) Bolts [4 pcs.]
(5) Plain washers [4 pcs.]
(6) Spring washers [4 pcs.]
(7) Nuts [8 pcs.]
(1) Pins [2 pcs.]
(2) Set screws [2 pcs.]
(3) Hinge rubber assemblies [2 pcs.]
Place the machine head gently on top of
the oil pan.
Pulse motor
Approx. 20 mm
Approx. 20 mm
NOTE:
• Be careful not to get the cords
clamped between the machine head
and the oil pan.
• When holding the machine head, do
not hold it by the pulse motor. This
may cause problems with operation
of the pulse motor.
3506B
(4) Hinge holders [2 pcs.]
(5) Bolts [4 pcs.]
(6) Plain washers [4 pcs.]
(7) Nuts [4 pcs.]
(8) Head rest
(9) Bolts with washer [4 pcs.]
3230B
BAS-311HN, BAS-326H
5
3. INSTALLATION
BAS-311HN
Needle plate
BAS-326H
Needle plate
Work clamp arm
3520B
3431B
(10) Auxiliary plate
(11) Bolts with washer [8 pcs.]
Loosen the eight bolts with washer (11),
and adjust so that the auxiliary plate (10)
is 0 to 0.5 mm above the needle plate.
NOTE:
• Install the auxiliary plate (10) so that
it is horizontal.
If the auxiliary plate (10) is lower than
the needle plate, the feed plate may
get caught on the needle plate.
Move the work clamp arm all the way to
the right when looking from the front of
the sewing machine (the direction of the
arrow in the illustration), and then gently
tilt back the machine head.
NOTE:
• Three or more people should tilt
back the machine head, and it
should be tilted gently while being
held with both hands.
• Be careful not to clamp any items
such as screwdrivers under the
3432B
cushion when tilting back the
machine head.
(12) Bobbin winder tension assembly
(13) Set screw [1 pc.]
3521B
6
BAS-311HN, BAS-326H
3534B
3. INSTALLATION
(14) Gas spring holders [2 pcs.]
(15) Spacer
(16) Bolt
(17) Nut
(18) Gas spring
(19) Shaft collars [2 pcs.]
(20) Gas spring shaft D
Be sure to
install so that
the side with
“UP” on it is
facing upward.
(21) Plain washers [2 pcs.]
(22) Retaining rings E [2 pcs.]
(23) Bolts [2 pcs.]
(24) Plain washers (medium) [2 pcs.]
(25) Plain washers (large) [2 pcs.]
(26) Spring washers [2 pcs.]
(27) Nuts [2 pcs.]
(28) Gas spring shaft U
(29) Retaining rings E [2 pcs.]
(30) Plain washers (small) [2 pcs.]
(31) Absorber setting plate
(32) Bolts with washer [2 pcs.]
(33) Gas spring support cover
(34) Bolts with washer [6 pcs.]
3535B
BAS-311HN, BAS-326H
7
3. INSTALLATION
3-5. Installing the LCD panel
3536B
Gently return the machine head to its
original position.
1. Remove the two screws (35), and
then temporarily remove the machine
head switch assembly (36).
2. Use the two screws (35) which were
removed to install the machine head
switch assembly (36) in the position
shown in the illustration.
3. Check that the machine head switch
as turned on as shown in figure [A].
* If the machine head switch is not
turned on, adjust the installation
position while referring to “3-16.
Checking the machine head switch”.
• Pass the cord of the LCD panel (8)
through the table hole, and then insert
it into the (PANEL) connector (9) on
the side of the control box.
• Tighten the four wood screws (3) so
that the thickness of the rubber
cushion (2) is 5 mm.
3554B
BAS-311HN, BAS-326H
3-6. Installing the two-pedal foot switch
3042B
3-7. Connecting the cords
3. INSTALLATION
(1) Two-pedal foot switch
(2) Conversion harness
Connect the connector for the two-pedal foot switch (1) to the
conversion harness (2). Insert the conversion harness (2) into
the P15 (PEDAL) connector on the main P.C. board. (Refer to
"3-7. Connecting the cords".)
* Be sure to make the ground connection. (Refer to “3-8.
Connecting the ground wire”.)
<Two-pedal foot switch operating method>
When the work clamp switch (left) is depressed, both work
clamps are lowered, and when the start switch (right) is
depressed, the sewing machine starts sewing.
* The work clamp lowering method can be changed using
memory switch No. 002. (Refer to "2-2. List of memory
switch settings" in the "LCD Panel/Operation Panel"
Instruction Manual.)
Work clamp switch (2-step)
3528B
Start switch
4923Q
1. Gently tilt back the machine head.
2. Pass the cord bundle through the hole
in the work table.
3. Loosen the two screws (1), and then
open the cord presser plate (2) in the
direction of the white arrow and pass
the cord bundle through the opening.
4. Securely connect the connectors as
indicated in the table.
(Continued on next page)
NOTE:
• Check that the connector is facing the
correct way, and then insert it firmly
until it locks into place.
• Secure the cables with cable ties and
cord clamps, while being careful not to
pull on the connector.
BAS-311HN, BAS-326H
9
3. INSTALLATION
< Main P. C. board >
Lock the cord
clamp securely.
<Removal>
Press the tab.
<Securing>
3542B
X pulse motor encoder [5-pin] White P17 (X-ENC) (2)
Y pulse motor encoder [5-pin] Blue P18 (Y-ENC) (2)
Intermittent presser foot pulse motor encoder [5-pin] Black P19 (P-ENC) (2)
Machine head switch [3-pin] P14 (HEAD-SW) (2)
Conversion harness (two-pedal foot switch) [7-pin] White P15 (PEDAL) (2)
Machine head memory [6-pin] P16 (HEAD-M) (2)
Thread trimmer solenoid [6-pin] P2 (SOL1) (1)
Digital tension solenoid / Tension release solenoid [4-pin] P3 (SOL2) (1)
X pulse motor [4-pin] White P21 (XPM) (1)
Y pulse motor [4-pin] Blue P22 (YPM) (1)
Work clamp pulse motor [4-pin] Black P23 (PPM) (1)
Home position sensor [12-pin] White P8 (SENSOR1) (2) (3)
STOP switch [6-pin] White P9 (HEAD) (2) (3)
Valve harness [12-pin] (pneumatic work clamp specifications) P35 (EX-OUT1) (2) (3)
Upper thread breakage detector [2-pin] White P36, P9(HEAD) (2) (3)
Connectors
Connection location on
main P. C. board
Cord clamps /
cable ties
NOTE: Route the X, Y and work clamp pulse motor harnesses so that they do not touch the power supply P.C. board at the
bottom of the control box.
10
BAS-311HN, BAS-326H
< Motor P. C. board >
3537B
Connectors
Upper shaft motor [4-pin]
Synchronizer [10-pin]
BAS-311HN, BAS-326H
3538B
3. INSTALLATION
Lock the cord clamps
securely.
Connection location on
motor P. C. board
(UVW)
P11(SYNC)
Cord clamps
(4)
(2) (3)
5. Close the cord presser plate (6) in the direction of the white
arrow, and secure it by tightening the two screws (5).
NOTE:
Close the cord presser plate (6) securely so that no
foreign objects, insects or small animals can get inside the
control box.
6. Check that the cords do not get pulled, and then gently return
the machine head to its original position.
11
3. INSTALLATION
<LCD panel>
(PANEL)
3557B
Connector D-sub connector
LCD panel [9-pin] (PANEL)
12
BAS-311HN, BAS-326H
3. INSTALLATION
3-8. Connecting the ground wire
CAUTION
Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric
shock, and problems with correct operation may also occur.
(1) Ground wire from the machine head
(2) Ground wires from two-pedal foot switch harnesses (2 wires)
• Tighten the control box cover with the six screws. Check that the cords are not clamped by the cover at this time.
3529B
NOTE: Make sure that the ground connections are secure in order to ensure safety.
BAS-311HN, BAS-326H
13
3. INSTALLATION
3-9. Connecting the power cord
CAUTION
Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric
shock, and problems with correct operation may also occur.
< Seen from underneath table >
Control box
Leg
Connect cords that match the voltage
specifications.