Minerva Boskovice 4180i 4280i User manual

Supply for Mini-stops
4180i
4280i
Minerva Boskovice, a.s., Sokolská 60, CZ - 680 17 Boskovice
Tel.: [phone], 453433, 494111 Fax: [phone] http://www.minerva-boskovice.com
Edition/Vydáno/Herausgegeben/Edition/Editado: 05/2004 Printed/Tisk/Druck/Imprimé/Impress ã o: Czech Republic S735 000601
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Contents - The instructions for assembling with Mini-stops
1. Safety instructions ............................................................................................................................................................... 1
2. The way of machine supply ................................................................................................................................................ 1
2.1 Complete head with accessories ............................................................................................................................ 1
2.2 Stand ........................................................................................................................................................................ 1
3. Table top ........................................................................................................................................................................ 2
4. Machine assembly ............................................................................................................................................................... 2
4.1 Stand frame assembly .............................................................................................................................................. 2
4.2 Assembly of components on the bottom of table top and connecting to the mains ............................................ 2
4.3 Assembly of a table top on a stand frame, assembly of oil tank .......................................................................... 3
4.4 Assembly of machine head onto a stand ................................................................................................................ 3
4.5 Electric connection of the machine head to the box of the drive electronics...................................................... 4
4.5.1 Connecting cable ............................................................................................................................................ 4
4.5.2 Propper electric connection ........................................................................................................................... 4
4.5.3 Fastening control panel of Mini-stop and thread stand ................................................................................. 5
5. Basic setting of the Mini-stop ............................................................................................................................................. 6
5.1 Generally .................................................................................................................................................................. 6
5.2 Setting of Mini-stop EFKA DC 1550/DA320 ............................................................................................................. 6
5.2.1 Setting of parameters without the panel V810/V820 ..................................................................................... 7
5.2.2 Setting of positions ........................................................................................................................................ 7
5.2.3 Setting of the parameter of the microswitch of the running blocking when tilting the machine .................. 7
5.2.4 Setting parameters for reducing the pressure of the presser foot when stopping ........................................ 7
5.2.5 Changes of setting parameters of the Mini-stop with regard to the original setting of the manufacturer .... 8
5.2.6 Indication of faults ......................................................................................................................................... 8
6. Examination of sewing ........................................................................................................................................................ 8
Supplement
Table top
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The instructions for assembling with Mini-Stops
1. Safety instructions
Caution !
Assembly of the machine must only be carried out by appropriately trained technician.
Any operations to be performed on the electric installation of the sewing machine are to be done only by a compe-
tent electrician.
SAFETY INSTRUCTIONS OF THE DRIVE MANUFACTURER
The drive for the MINI-STOP sewing machines is manufactured and tested according to the valid safety regulations and enables
in this way a safe and dependable operation. For maintaining this condition and a safe running, the user needs to be acquainted
with all hints and cautions contained in these instructions, as well as in the instructions of the drive manufacturer.
The MINI-STOP is destined for the sewing industry and for being run in clean and dry rooms. It may not be put into operation
when the machine, in which it is incorporated, does not comply with all regulations and provisions. It is not allowed to use the
drive in outer humid spaces or in spaces with possible explosion risk. It is necessary to observe the hints of the manufacturer
concerning the running, attendance and maintenance. The MINI-STOP works in a safe and dependable way when there are
maintained the hints of the instructions and the purpose of the driver use. These instructions should be carefully read before
unpacking and putting the drive into operation. Before the first putting of the MINI-STOP, its accessories and supplements into
operation, be sure in being acquainted with the hints concerning the assembly, attendance, running and maintenance. All
activities connected with the drive may be carried out only when observing the respective regulations and when respecting the
given safety rules descreibed in the following parts of the indstructions. All persons concerned must be acquainted with these
safety warnings. The inobservance of these hints may cause injuries of persons, damage of objects or breakdowns or damage of
the drive.
It is necessary to observe the regulations concerning accidents, safety and skilled labour being in force in the given country.
The MINI-STOP may be installed and put into operation only by qualified persons. This will reduce to a minimum the consequences
of breakdowns with the possible health injury of persons.
Operations carried out on the machine or on its parts under high voltage are not allowed. Exceptions thereof are regulated by the
EN 50110 standard.
Before removing guards, assembling additional devices or accessories, e.g. sensors of the pedal position, photocell etc., the
drive must be disconnected from the mains and the drive must be put ito its idle condition. The operating box may be oppened
only after having run 10 minutes! wing to the risk of burning, fire, electric chock or injury, any reconstructions or eventual
modifications of the MINI-STOP are prohibited. During the running thereof, its guards or protective devices may not be removed.
Before leaving the work place, the mains switch must be out into the OFF condition. When the drive is out of use for some time,
the mains plug is to be disconnected from the mains and the drive must be secured against an accidental switching on.
In the event of having connected additional devices or operational means to the drive, these may be fed only with low voltage
from a safety transformer.
Never operate the drive when the air vents there of are clogged. Be sure in avoiding the presence of dust or fibres therein. Do not
insert and avoid falling of any object, e.g. needles, into these vents. Do not use MINI-STOP when working with aerosols and
sprays or with oxygen. The cautions mentioned in the following parts serve for ensuring further safety.
The MINI-STOP may be operated only with a protective conductor connected on a protective system which complies with all
regulations and service provisions.
2. The way of machine supply
The contents of supply will be determined in agreement between the supplier and buyer. There are following possibilities:
2.1 Complete head with accessories
In this case the supply contains:
-Complete head with motor, control electronics and connecting head cable.
-Chosen spare parts in the bag under the presser element (see parts indicated * in catalogue of spare parts).
-Standard accessories (it contains tools-see module in catalogue of spare parts).
-Special accessories (it contains some components of a stand and upper belt cover-see module in catalogue of spare parts).
The supply like this is not complete. Buyer will provide missing components himself or he can put in an extra order to get them
according to the following paragraphs.
2.2 Stand
Delivery contains components of a stand, however, without components of a stand included in special accessories supplied with
machine head (see par. 2.1) and without any electrical components. If it hasnt been agreed otherwise, the stand is supplied i n
separate pieces. If the assembled stand is asked, special accessories are used from head supply.
Stand (ordered number S400 019000 for subclasses with Mini-stop) contains following items:
MG55 000501 Stand frame
MG53 002501 Big treadle
0907 021044 Set of parts for a stand
S615 000318 Table top
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3. Table top
In case buyer will provide his own table top its drawing is
shown in supplement.
4. Machine assembly
It is described machine assembly with stand here which is
supplied in separate pieces. Otherwise use these instructions
adequate.
4.1 Stand frame assembly
A frame is assembled according to the picture.
4.2 Assembly of components on the bottom of table top and connecting to the mains
- Put down antiskid (rubber) bands on the stand frame.
- Turn the table top its underside upwards and place it on the prepared bands.
- Screw on the drawer (1) using wood screws.
- Screw on the pedal position sensor holder (2) using wood screws and the pedal position sensor thereon using screws.
- Screw on the lighting transformer (3), if any, using wood screws.
- Connect the supply of the lighting transformer (3) lead to the terminals of the network lead of the electronics box (4) of the Mini-
stop (8). For doing this, it is necessary to remove the upper metal sheet and the left-hand lateral from the electronic box.
- Screw on the box (4) of the Mini-Stop (8) electronics using wood screws.
- Screw on the knee lever with the electric switch (7) (if any), using wood screws.
- Screw on the installation ducts (9) using wood screws.
- Install the electric line of the network conductors using clamps. Place the conductors, led within the Mini-stop electronics box,
into the installation ducts.
The Mini-Stop is a device of the protection class I, which means that the protection against the dangerous contact of lifeless
parts is ensured by means of a protective conductor. The Mini-Stop is destined to be connected to an earthed alternating mains
with the voltage from 190 to 240 V 50/60 Hz. The connection thereof to the mains may be done only by means of a multipolar
plug with a protective contact. No fixed connection is permitted. Mind the uniform distribution of the power in the three-phase
mains. On every 16 A protected phase only 3 Mini-Stops may be connected, to avoid the overload of the medium conductor (N).
The MINI-STOP may be operated only with the protective conductor connected to a functional protective system
complying with all local regulations and provisions with regard to avoiding accidents of persons owing to electric
current or fire. This protection should not be cancelled e. g. by any extending cord without protective conductor.
2
1
7
3
4
8
9
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The MINI-STOP will become dangerous when the protective conductor inside or outside the drive will be broken, as
well as with broken protective conductor with protective system.
Any intentional breaking thereof is forbidden.
The connecting conductors should comply with the power load and the min. HO5VV version. The conductor cross-section
should be at least 1 mm2, The length thereof should not exceed 5 m. The voltage on the protective conductor should not exceed
3,3 Vwith the 10 A current.
Caution!
The voltage in the mains must be in conformity with the voltage indicated on the drive plate.
Caution!
The transformer of the bulb for the sewing area is not switched off by the main switch (EN 60204-3-1). Before
proceeding to any repair operation in the transformer box (such as a fuse exchange) the plug categorically must be
taken out of the socket. Such operations may be carried out only by persons with adequate electrotechnical skill.
4.3 Assembly of a table top on a stand frame,
assembly of oil tank
- Turn the table top around and screw it down to the frame by
means of screw ø 8 x 35 mm.
When applying a frame different from that recommended by
the producer, be sure to adapt its position so as to ensure
the stability of the machine head in its tilted state.
- Screw on the microswitch (which is a component part of the
interconnecting cable) on the oil tank (1).
- Oil tank (1) with assembled lever (2) insert through the bot-
tom part into the cut hole in the table top and put down as
shown in detail (D) in that way, that the edge of the tank
would fit in with the edge of the cut hole in the table top. Set
the height of the tank according to the section A-A. Tank
may not protrude out of upper surface of a table top. Nail
down the tank with nails ø 2 x 40 mm.
- Adjust the lever (2) to the dimensions B and C.
- Stick rubber inserts (3) into the cut-out of the table top.
4.4 Assembly of machine head onto a stand
- Stick down rubber inlays (2) with glue into the groove in a
wedge (1) and put the wedge down on the table top (3).
- Disassemble trasported tank (cover) from the machine head
and assemble hangers (4) on the head.
- Put the head down into the rubber inlays (2) and (5).
- Screw the wedge down to the table top with screws ø5 x
30 mm.
- Screw on hinges, using wood screw ø5 x 40 mm and screw
M5 (the hinge above the motor), to the table top. Tighten the
wood screw and the screw in such a way, so that the oscilla-
tion of the head on rubber inserts is not limited.
- Insert supporting pin (6).
Circuit layout
124346 2
5
4
3
A - A
D
B = ~82
A
A
3
3D12
C = 9mm
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4.5 Electric connection of the machine head to the box of the drive electronics
4.5.1 Connecting cable
Together with the machine head there is supplied a connecting cable for the following drive EFKA DC 1550/DA320.
For the information sake, there are given the respective circuit layout.
The colours are indicated with numbers in brackets (6  green, 7  blue, 8  pink, 9  black, 10  white, 11  violet, 12  yellow,
13  red, 14  grey, 15  brown). Included insulating covers PVC (5) are put on the bunches and they are put together with
remaining part of cable insulation by means of contracted tube (4) (it is heated up with fire of lighter).
Power connecting cable is marked off with dotted line in circuit layout.
4.5.2 Propper electric connection
- Connect the 5-polar plug of the stator motor winding into
the socket B41 on the rear side of the electronics box.
- Connect the 9-polar plug of the commutation motor sensor
into the socket B2 on the rear side of the electronics box.
- Connect the 9-polar plug of the pedal sensor into the socket
on the rear side of the electronics box B80.
- Connect the 9-polar socket of the panel, if any, into the plug
on the rear side of the electronics box B776.
- Connect the 25-polar socket (3) of the connecting cable (2)
with the plug on the machine head, connect the 37-pole
plug of this cable into the 37-polar socket of the electronics
box A.
- Connect the plug of the knee lever (7) cable with its electric
switch (if any), with the socket of interconnecting cable.
- Secure all D-SUB connectors against falling out by screwing
in the screws.
- Place the cables into the installation ducts.
- Mount the lighting, if any, and connect its cable with the
transformer cable.
- Proceed to electric interconnecting of the motor head, hinge
(8), box of the Mini-Stop electronics and stand.
823
D
Circuit layout
○○○○○○○○○○○○○○○○○
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
○○○○○○○○○○○○○○○○
7
3
D
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4.5.3 Fastening control panel of Mini-Stop
and thread stand
- Fix the control panel of Mini-Stop:
- Stick the panel V 810 (1) by Mini-Stop EFKA on the machine
head (if any). Defat the contact surface properly. Stick the
clip (2) on the cover belt.
- With the Mini-Stop Efka, mount the holder (4) on the panel
V820 (5)(if any) using screw and screw on the holder with
the panel to the stand table.
- Assemble the thread stand so that its arms would be parallel
to the longer edge of a table top.
1
2
60mm
80 4
5
110
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5. Basic setting of the Mini-stop
5.1 Generally
The Mini-stop DC 1550/DA320 does not necessarily need the control panel V810/VV820 when running. All parameters can be set
using push the buttons and the display on electronics box, the panel V810/V820 will however enable the operator to work more
easily with regard to its position. The description of the push-button panel and that of the panels V810/V820 is given in the
instruction manual, part A, par. 7. The general procedure of setting parameters with the panel V8120/V820 is given in the
assembling instructions with standard drives, part. B1, par. 5.1 and appllies also to DC 1550/DA320.
5.2 Setting of Mini-stop EFKA DC 1550/DA320
Elements of the electronics box
Front side
S1 Button P calling or leaving the programming mode
S2 Button E option of initial bartack (switched off, simple, double) within the programming mode of the confirmation
of changes
S3 Button + option of final bartack (switched off, simple, double) within theprogramming mode of enhancing
the displayed value
S4 Button - position of the presser foot when stopping in the seam (down, up)
position of the presser foot after trimming (down, up) within the programmed mode of reduction of
the displayed value
S5 Button »position of the needle when stopping in the seam (down, up) within the programming mode of shifting to
the next digit
LED1 indication for the start single bar
LED2 indication for the start double bar
LED3 indication for the end single bar
LED4 indication for the end double bar
LED5 ndication for automatic presser foot lifting when stopping in the seam
LED6 indication for automatic presser foot lifting after having ended the seam (trimming)
LED7 indication for stopping in the seam with the needle in its bottom position
LED8 indication for stopping in the seam with the needle in its top position
Display 3 digits
Reae side
B2 connection of the commutating motor scanner
B18 connection of the light barrier module (photocell)
B41 connection of the motor stator winding
B80 connection of the pedal set value initiator
B776 connection of the panel V810/V820
A (ST2) connection of electric elements of the sewing machine (electromagnets, electropneumatic valves,
push-buttons )
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5.2.1 Setting of parameters without the panel V810/V820
The procedure is identical as with the panel V810/V820, only the representation on the display having only 3 digits is different.
In this way, the numerical values of parameters containing more than 3 digits (e.g. 2000 rev/min being represented as 200) are
shortened. The parameter number is displayed with three digits with three decimal points to differ it from the value of the
parameter displayed without points.
Procedure of changing parameters without the panel V810/V820
- depress the button Pand then switch on the network switch on the front side of the electronics box, the display will show Cod
- depress the button », the 1st digit blinks
- using the button +and -, set the 1st digit to the value 3
- depress the button », the 2nd digit blinks
- in the same way, set the 2nd and the 3rd digits, so that the display shows 311 (the code number for the access to all parameters)
- depress the button E, the display will show 2.0.0 (parameter number 200)
- using the buttons », +and -, set the required parameter number and depress the button E, the display will show the parameter
value
- using the buttons +and -, set the required parameter value
- depress the button E(the following parameter number will be displayed) or the button P(the original parameter number will be
displayed)
- proceed to the termination of changes by depressing the button P(you will leave the programming mode) and you will return
into the sewing mode
Note: To store the change in memory permanently, it is necessary to tread the pedal forward (sewing of at least one sticth) before
switching of the network switch.
5.2.2 Setting of positions
The mechanical connection of the motor with the sewing machine is enabled by an indented belt with the gear speed ration of
1:1.This ensures constant angular ratios between the motor rotor and the sewing machine. The hand wheel synchronizer replaces
the synchronizer, which is built-in in the motor. When removing for any reason the indented belt, a new setting of the correct
angular ratio between the motor and the sewing machine, the so-called reference position, is necessary.
Procedure
- set the parameter number 170¸ depress the button E
- the display will show Sr1
- depress the button », Powill be displayed (the symbol ois rotating)
- turn the handwheel, until the rotating symbol odisappears and Pis displayed
- turn now the handwheel to the value of the angle 105°(the needle point is at the level of the throat plate)
- depress 2x the button P(return into the sewing mode)
Other important positions, i.e the 1st position of the needle given by the parameter 171 1E and the 2nd position given by the
parameter 171 2 E have been preset by the manufacturer of the drive.
5.2.3 Setting of the parameter of the microswitch of the running blocking when tilting the machine
For the purpose of enhancing the safety of the operator of the machine and when unintentionally treading the pedal, the motor
running is blocked. To get a correct working of this function, it is necessary to mount a microswith (which is component part of
the interconnecting cable) on the rear side of the oil tray and to set the parameter 282 to the value 1(DA320G5350) or the
parameter 241 to the value 8(DA320G5351). When the machine head is in its working position, the microswitch must be
switched on. The microswitch can be set when bending its lever.
5.2.4 Setting parameters for reducing the pressure of the presser foot when stopping
The electromagnet serving for lifting the presser foot may dispose also of a function for reducing the pressure or for lifting
slightly the preser foot when turning the sewn upper parts after having stopped in the seam or when the machine is running. This
command can be given by the operator by depressing the first button to the right on the button panel or by foot (microswitch of
the knee lever). This function needs setting of the following parameters:
Parameter Parameter
number value
250 12 function of reducing the presser foot pressure
332 1 the setting 333, 334 holds
333 *40 time in ms of max. current of the presser foot electromagnet
334 *60 retaining force of the presser foot electromagnet
* the values are only approximative ones and depend on the set up pressure of the presser foot and on the material thickness
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5.2.5 Changes of setting parameters of the Mini-stop with regard to the original setting of the manufacturer
Parameter Parameter Parameter
number value description
111 - maximum revolutions (according to the machine type)
116 180 revolutions of the trimmer
171-1E 25 First position of needle - start (only DA320G5350)
171-1A 85 First position of needle - end (only DA320G5350)
192 237 angle of the delay of switching on the tensioners (only DA320G5350)
241 8 see 5.2.3 (DA320G5351)
282 1 see 5.2.3 (DA320G5350)
001 3 number of stitches of start bar - section 1
003 2 number of stitches of end bar - section 3
**250 12 function of the outlet A/30 and of the inlet A/8 (reduction of the presser foot pressure)
**332 1 the setting 333, 334 holds
**333 *40 time in ms of max. current of the presser foot electromagnet
**334 *60 retaining force of the presser foot electromagnet
* the values are only approximative ones and depend on the set up pressure of the presser foot and on the material thickness
** with using el. knee lever
5.2.6 Indication of faults
Generation information
Display of the V810 V820 Meaning
electronics box
A1 InF A1 InF A1 When switching on the machine, the pedal is not in the zero position.
-StoP- blinks +
A2 -StoP- blinks symbol blinks Blocking of the motor running.
A3 InF A3 InF A3 The reference position is not set.
A5 InF A5 InF A5 Autoselect not set or erroneous.
Programming of functions and values
Display of the V810 V820 Meaning
electronics box
Jump back to 000 Jumb back to 000
or to the last or to the last InF F1 Erroneous code or parameter number inserted.
parameter number parameter number
Serious state
Display of the V810 V820 Meaning
electronics box
E2 InF E2 InFo E2 Low woltage in the network or short period of time between the network switching on and off.
E3 InF E3 InFo E3 Machine blocked or without attaining the required revolutions.
E4 InF E4 InFo E4 Interference due to insufficient earthing or defective contact.
Hardware failure
Display of the V810 V820 Meaning
electronics box
H1 InF H1 InFo H1 Commutation signal or invertor defective.
H2 InF H2 InFo H2 Processor defective.
6.Examination of sewing
Caution! Risk of injury!
Before threading a thread switch the main switch off and wait until the motor stops.
- Check the sense of turning the hand wheel  according to the arrow situated on it.
- Thread a thread.
- Choose sewing material.
- Switch the desirable function on the control panel of stopmotor. Examination should be carried out with selection of fancy bar.
- First sew slowly then speed up the sewing.
- If the stitch does not meet requirements, follow the first part of instructions manual or service book.
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