Attention! Parameter numbers have been changed!

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1 Attention! Parameter numbers have been changed! STEPPING OTOR CONTROL 20A570 20A570 KL2359 INSTRUCTION ANUAL No English FRANKL & KIRCHNER EFKA OF AERICA INC. EFKA ELECTRONIC OTORS GBH & CO KG SINGAPORE PTE. LTD.

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3 3 EFKA 20A570 CONTENTS Page IPORTANT SAFETY INSTRUCTIONS 7 2 RANGE OF APPLICATIONS 8 2. USE IN ACCORDANCE WITH REGULATIONS 8 3 SCOPE OF SUPPLY 8 3. SPECIAL ACCESSORIES 8 4 TECHNICAL DATA OF THE STEPPING OTOR CONTROL 8 5 CONNECTION SCHEE FOR 20A 9 5. OPERATING THE STEPPING OTOR CONTROL WITH A SEWING CONTROL (E. G. AB62CV...) 9 6 SOCKET CONNECTORS 0 6. POSITION OF THE SOCKET CONNECTORS CONNECTION DIAGRA 0 7 STEPPING OTOR CONTROL FUNCTIONS 3 7. STEPPING OTOR FUNCTION SYNCHRONOUS OPERATION (PA. 290=0) TIING DIAGRA SYNCHRONOUS STEPPING OTOR OPERATION (PA. 290=0) STEPPING OTOR FUNCTION AUTOATIC ETERING DEVICE (PA. 290= / 2) TIING DIAGRA AUTOATIC ETERING DEVICE (PA. 290=) TIING DIAGRA 2 AUTOATIC ETERING DEVICE AT THE START OF THE SEA (PA. 290=) TIING DIAGRA AUTOATIC ETERING DEVICE AT THE SEA END (PA. 290=2) TIING DIAGRA 2 AUTOATIC ETERING DEVICE AT THE SEA END (PA. 290=2) STEPPING OTOR FUNCTION EXPANDER FEEDING (PA. 290=3) TIING DIAGRA EXPANDER FEEDING (PA. 290=3) TIING DIAGRA EXPANDER FEEDING/SYNCHRONOUS STEPPING OTOR OPERATION (PA.290=3) STEPPING OTOR FUNCTION FULLNESS SETTING (PA. 290=5) TIING DIAGRA FULLNESS SETTING (PA. 290=5) TIING DIAGRA ACHINE FOR ATTACHING CUFF AND HEEL TAPE WITH ETERING DEVICE AT THE SEA END (PA. 290=7) TIING DIAGRA ACHINE FOR ATTACHING CUFF AND HEEL TAPE WITH ETERING DEVICE AT THE SEA END (PA. 290=7) STEPPING OTOR FUNCTION PULLER (PA. 290=8 / 9) TIING DIAGRA PULLER (PA. 290=8) CONNECTION SCHEE FOR PULLER OPERATION (PA. 290=9) WITH OTHER CONTROLS TIING DIAGRA PULLER (PA. 290=9) 37

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5 5 EFKA 20A570 CONTENTS Page 8 PARAETER LIST OPERATOR LEVEL TECHNICIAN LEVEL SUPPLIER LEVEL INSERTABLE STRIPS FOR V80/V820 CONTROL PANELS 47

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7 7 EFKA 20A570 Important Safety Instructions When using an EFKA drive and accompanying devices (e g for sewing machines), basic safety precautions should always be followed, including the following: Read all instructions thoroughly before using this drive. Drive, its accessories and accompanying devices should be mounted and put into operation by qualified personnel in accordance with the guidelines provided in the instruction manual. To reduce the risk of burns, fire, electric shock, or personal injury: Use this drive only for its intended use as described in the instruction manual. Use only attachments recommended by the manufacturer or as contained in the instruction manual. Do not operate without corresponding protective devices. Never operate this drive if one or more parts (e. g. cables, plugs) are damaged, if it is not working properly, if any damages can be identified or are to be suspected (e. g. after it has been dropped). Only qualified personnel are authorized to make adjustments, eliminate faults and complete repair work. Never operate the drive with the air openings blocked. Keep ventilation openings of the drive free from the accumulation of lint, dust and loose cloth. Never drop or insert any object into any opening. Do not use drive outdoors. Do not operate where aerosol (spray) products are being used or where oxygen is being administered. To disconnect, turn off main switch, then remove plug from outlet. Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord. Keep fingers away from all moving machine parts. Special care is required e. g. around the sewing machine needle and the V-belt. Before mounting and adjusting accompanying devices, i.e. position transmitter, reversing device, light barrier, etc., disconnect drive from mains (turn off main switch, remove mains plug from outlet [DIN VDE 03 part 30; EN ; IEC ]). Always switch off (0) machine and remove plug from outlet, when removing covers, mounting accompanying devices, position transmitter especially, light barrier, etc., or any other devices mentioned in the instruction manual. Only qualified personnel are authorized to work on the electrical components. Work on high voltage circuit areas is forbidden, except as stated in the respective regulations, e.g. DIN VDE 005 part. Only specially trained personnel are authorized to complete repair work. Cables to be wired must be protected against expectable strain and fastened adequately. Cables near moving machine parts (e. g. V-belts) must be wired ata aminimum distance of 25 mm (see DIN VDE 03 part 30; EN ; IEC ). For safety it is preferred to wire the cables separately from each other. Before connecting the mains line make sure that the mains voltage corresponds to the specifications on the motor rating plate and on the nameplate of the power pack. Connect this drive to a properly grounded outlet only. See Grounding Instructions. Electric accompanying devices and accessories must only be connected to safety low voltage. EFKA DC drives are protected according to overvoltage class 2 (DIN VDE ). Observe all safety guidelines before undertaking conversions or modifications. For repair and maintenance use only original replacement parts. Warnings in the instruction manual which point out particular risks of personal injury or risk to the machine are marked with this symbol wherever applicable. This symbol is a warning on the control and in the instruction manual. It indicates hazardous voltage. CAUTION In the case of failure this area can be current-carrying even after having turned the power off (non discharged capacitors). The drive is not an independently operating unit, but is designed to be incorporated into the machinery. It must not be put into service until the machinery into which it is to be incorporated has been declared in conformity with the provisions of the EC Directive. Save these instructions for future reference.

8 EFKA 20A Range of Applications The stepping motor control can be used separately or as expansion unit for EFKA drives (AB60D, AB62CV, AB220A) and for other controls in puller mode 9. See chapter Stepping otor Function Puller. 2. Use in Accordance with Regulations The drive is not an independently operating machine, but is designed to be incorporated into other machinery. It must not be put into service until the machinery into which it is to be incorporated has been declared in conformity with the provisions of the EC Directive (Appendix II, paragraph B of the Directive 89/392/EEC and supplement 9/368/EEC). The drive has been developed and manufactured in accordance with the relevant EC standards: EN :990 Electrical equipment of industrial machines: Particular requirements for industrial sewing machines, sewing units and sewing systems. The drive is to be operated only in dry areas: CAUTION When selecting the installation site and the layout of the connecting cable, the Safety Instructions in Section must be followed with no exceptions. Particular attention should be paid to maintaining the proper distance from moving parts! 3 Scope of Supply Stepping motor control 20A570 Set of standard accessories B57 consisting of: Documentation Set of accessories Z55 consisting of 37-pin SubminD plug Potential equalization cord 3. Special Accessories Stepping motor 200 part no Stepping motor 250 part no Connecting cable from the stepping motor control to the AB62CV d.c. drive part no. 33 Connecting cable from the stepping motor control to the AB220A d.c. drive part no. 372 Control panel Variocontrol V80 part no Control panel Variocontrol V820 part no Technical Data of the Stepping otor Control otor driver voltage 35-45VDC 8 inputs 24VDC, active high/low 2 analog inputs 5VDC, Ri max. kω 5 outputs open collector, max. 60VDC, 0.5A, sum <2A ains voltage 230VAC, 50/60Hz Stepping motors 2 phases, with 4, 6, 8 connections, max. 3A/phase Stepping motor control bipolar chopper, CW/CCW, half step Weight 4.0 kg

9 9 EFKA 20A570 5 Connection Scheme for 20A mot V80/V820 DC600 variocontrol 820 P E variocontrol P + E B5 B5 mot B776 B776 V8.. B8 B9 B8 control L... B9 Nr. 33 ST ST euramot Steuerung Control Contrôle Typ AB62CV466 0 I 20A... AB62CV... KL2358 AB62CV... control (B8) and 20A...control (B8) are connected by adapter cord no. 33. If a light barrier is required for the sewing process it must be connected to socket B9 on the stepping motor control. The light barrier signal is transmitted via the connecting cable from the 20A to the sewing drive. 5. Operating the Stepping otor Control with a Sewing Control (e. g. AB62CV...) Set parameter 62 of the sewing control with which communication is to be established, to.

10 EFKA 20A Socket Connectors 6. Position of the Socket Connectors B5 Socket for stepping motor B8 Socket for light barrier module or transmission line B5 B5 mot B9 Socket for light barrier module B776 B776 Socket for V80/V820 control panel B776 V8.. ST Socket for inputs and outputs of the solenoid valves / displays / pushbuttons and switches B8 B9 B8 control L... B9 ST ST KL Connection Diagram L 2R L L L 2L R L B PH2 PH (*) 5 SUB- D KL2443

11 EFKA 20A570 ATTENTION When connecting the outputs, ensure that a total power of 48VA constant load will not be exceeded! in - Input 2 - Output 2 in2 - Input Output 3 in3 - Input Output 7 in4 - Input Output 8 in5 - Input Output 9 in6 - Input 6 in7 - Input 7 in8 - Input 8 The input and output functions depend on the mode set with parameter 290. ) Nominal voltage 24V, no-load voltage max. 30V momentarily after power On 2) Nominal voltage 5V, Imax = 20mA 3) Nominal voltage 5V, Imax = 30mA *) Front view (component side) of the socket and/or rear view (soldering side) of the plug

12 EFKA 20A570 2 POS IN - Input for position POS2 IN - Input for position 2 G/G2 IN - Input for generator impulses TXD/RXD - Serial transmission lines L IN - Possibility of connecting a light barrier module to socket B8/8 (sensing of the signal upon switching to 0V) L002 - Reflection light barrier module For external devices there is a supply voltage of +5Von socket B9/4. After opening the cover, this voltage can be changed to +5V by moving a multipole connector J3 to a different position on the printed circuit board. +5V = Connect lefthand pins and 2 with jumper (factory setting) +5V = Connect righthand pins 3 and 4 with jumper B776 J3 J3 J3 3 3 B8 B V 2 +5V 4 KL2444 2) Nominal voltage 5V, Imax = 20mA *) Front view (component side) of the socket and/or rear view (soldering side) of the plug

13 3 EFKA 20A570 7 Stepping otor Control Functions 7. Stepping otor Function Synchronous Operation (Pa. 290=0) Functions Parameter etering device 290 = 0 Insertable strip 05 for V80 control panel 29 = 5 Insertable strip 05 for V820 control panel 292 = 5 Connection of a pushbutton for tape cutter to socket ST/7 (in) Connection of a pushbutton for selection of tape tension 8... and/or 8... to socket ST/6 (in3) Connection of a pushbutton for selection of tape tension...8 and/or...8 to socket ST/8 (in4) Connection of a pushbutton for metering device by means of a sensor on socket ST/5 (in5) Connection of a pushbutton for metering device on socket ST/2 (in6) variocontrol 80 P E A B KL2445 Pushbutton = - Setting tape tension or 2 (ratio stepping motor/d.c. drive) Pushbutton 2 = - Setting tape tension 3 or 4 (ratio stepping motor/d.c. drive) Pushbutton 3 = - Setting tape tension 5 or 6 (ratio stepping motor/d.c. drive) Pushbutton 4 = - Setting tape tension 7 or 8 (ratio stepping motor/d.c. drive) Pushbutton A = - Selection of tape tension 8... (parallel with input in3) Pushbutton B = - Selection of tape tension...8 (parallel with input in4) variocontrol 820 P E C A B KL2446 Pushbutton...9 = - Setting tape tension...8 (ratio stepping motor/d.c. drive) Pushbutton 0 = - Correction factor for switching between 2 tape tension values Pushbutton A = - Selection of tape tension 8... (parallel with input in3) Pushbutton B = - Selection of tape tension...8 (parallel with input in4)

14 EFKA 20A570 4 Valid parameters if parameter 290 = 0 (synchronous stepping motor operation) Parameter Functions max min Preset 002 c3 Number of stepping motor steps for metering device Value of ratio on pushbutton (V80/V820) Value 2 of ratio on pushbutton (V80/V820) Value 3 of ratio on pushbutton 2 (V80/V820) Value 4 of ratio on pushbutton 2 (V80/V820) Value 5 of ratio on pushbutton 3 (V80/V820) Value 6 of ratio on pushbutton 3 (V80/V820) Value 7 of ratio on pushbutton 4 (V80/V820) Value 8 of ratio on pushbutton 4 (V80/V820) Value 9 of ratio on pushbutton 5 (V820) Value 0 of ratio on pushbutton 5 (V820) Value of ratio on pushbutton 6 (V820) Value 2 of ratio on pushbutton 6 (V820) Value 3 of ratio on pushbutton 7 (V820) Value 4 of ratio on pushbutton 7 (V820) Value 5 of ratio on pushbutton 8 (V820) Value 6 of ratio on pushbutton 8 (V820) Value 7 of ratio on pushbutton 9 (V820) Value 8 of ratio on pushbutton 9 (V820) Value 9 of ratio on pushbutton 0 (V820) Value 20 of ratio on pushbutton 0 (V820) Value 2 of ratio on pushbutton 0 (V820) n Fixed stepping motor speed with asynchronous operation [RP] n2 Fixed stepping motor speed with manual operation by means of pushb. A / B [RP] SnS From this sewing drive speed onwards signal 9 is emitted at the control rpd Select how to start metering device 7 3 bee End of metering device at the start of the seam / seam end Flo Lift sewing foot when feeding the tape On/Off 0 34 t7 Prolongation of blowing signal during metering device t5 Delay time until start of stepping motor for metering device [ms] nfd Initiate end of stepping motor operation by thread trimming (see Parameter List) 0 37 ned Initiate end of stepping motor operation by seam end (see Parameter List) 0 40 mbs Activate tape cutting by means of external pushbutton on input in / pedal / pedal -2 4 rbs Stepping motor runs parallel during tape cutting On/Off t6 Activation time when operating the tape cutter manually at machine standstill [ms] Ft2 Tape cutter until seam end or over time SbS Function start tape tension. Last tape tension value or value selected by means 0 0 of pushbutton 90 mbs Ratios are selected via inputs in3 and in d0 Percental adaptation of the stepping motor speed up to 500 RP d02 Percental adaptation of the stepping motor speed up to 000 RP d03 Percental adaptation of the stepping motor speed up to 500 RP d04 Percental adaptation of the stepping motor speed up to 2000 RP d05 Percental adaptation of the stepping motor speed up to 2500 RP d06 Percental adaptation of the stepping motor speed up to 3000 RP d07 Percental adaptation of the stepping motor speed up to 3500 RP d08 Percental adaptation of the stepping motor speed up to 4000 RP d09 Percental adaptation of the stepping motor speed up to 4500 RP d0 Percental adaptation of the stepping motor speed up to 5000 RP c7 Correction factor when switching to fast tape feeding c8 Correction factor when switching to slow tape feeding Selection of insertable strip for V Selection of insertable strip for V tf Function of pushbutton A on the V80/V820 control panels tf2 Function of pushbutton B on the V80/V820 control panels See chapter Parameter List for values of the general parameters as well as for more detailed explanations of the above parameters. DC drive parameters: Sign Function Parameter n Positioning speed 0 n2 aximum speed n7 Trimming speed 6 t3 Start delay from lifted foot 202

15 5 EFKA 20A Timing Diagram Synchronous Stepping otor Operation (Pa. 290=0) - / ODE-0a n n2 n n2 n7 DC POS. ST2/20 POS.2 ST2/2 FL ST2/35 t3 tx 9 in ST/7 in2 ST/ in6 ST/2 2 (FF) ST/28 3 (BL) ST/27 7 (L) ST/23 8 (B) ST/24 9 (DR) ST/25 0 ODE-0b Abbreviations for d.c. drive: POS = Position on the sewing machine POS2 = Position 2 on the sewing machine FL = Sewing foot lift Abbreviations for stepping motor: >> = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) in = Pushbutton for tape cutter in2 = Pushbutton for metering device 3 (BL) = Signal blowing 7 (L) = Signal stepping motor running 8 (B) = Tape cutter 9 (DR) = Signal direction of rotation *9 Synchronous operation according to d.c. drive speed. The transmission ratios are selected by means of pushbuttons...4 on V80 and pushbuttons...9 on V820. *0 Signal direction of rotation remains On until the direction of rotation is reversed.

16 EFKA 20A Stepping otor Function Automatic etering Device (Pa. 290= / 2) Functions Parameter etering device at the start of the seam 290 = etering device at the seam end 290 = 2 Insertable strip 0 for V80 control panel 29 = Insertable strip 0 for V820 control panel 292 = Connection of a pushbutton for tape cutter to socket ST/7 (in) Connection of a pushbutton for metering device to socket ST/ (in2) Connection of a pushbutton for selection of tape tension 4... and/or 6... to socket ST/6 (in3) Connection of a pushbutton for selection of tape tension...4 and/or...6 to socket ST/8 (in4) Connection of a pushbutton for sensor to socket ST/5 (in5) variocontrol 80 P E A B 3 KL2447 Pushbutton = - Setting tape tension or 2 (ratio stepping motor/d.c. drive) Pushbutton 2 = - Setting tape tension 3 or 4 (ratio stepping motor/d.c. drive) Pushbutton 3 = - Setting the number of stitches for the d.c. drive with which the stepping motor runs in reverse direction Pushbutton 4 = - Setting the number of stepping motor steps for metering device Pushbutton A = - Pushbutton for activating the metering device Pushbutton B = - Selection of tape tension 4... (parallel with input in3) variocontrol 820 P E A B KL2448 Pushbutton...8 = - Setting tape tension...6 (ratio stepping motor/d.c. drive) Pushbutton 9 = - Setting the number of stitches for the d.c. drive with which the stepping motor runs in reverse direction Pushbutton 0 = - Setting the number of stepping motor steps for metering device Pushbutton A = - Pushbutton for activating the metering device Pushbutton B = - Selection of tape tension...6 (parallel with input in3)

17 Valid parameters if parameter 290 = or 2 (automatic metering device) 7 EFKA 20A570 Parameter Functions max min Preset 000 c Number of d.c. drive stitches at the start of the seam until start of the stepping 9999 motor in reverse direction 00 c2 Number of stitches that the stepping motor runs in reverse direction for tape tension 002 c3 Number of stepping motor steps for metering device Value of ratio on pushbutton (V80/V820) Value 2 of ratio on pushbutton (V80/V820) Value 3 of ratio on pushbutton 2 (V80/V820) Value 4 of ratio on pushbutton 2 (V80/V820) Value 5 of ratio on pushbutton 3 (V80/V820) Value 6 of ratio on pushbutton 3 (V80/V820) Value 7 of ratio on pushbutton 4 (V80/V820) Value 8 of ratio on pushbutton 4 (V80/V820) Value 9 of ratio on pushbutton 5 (V820) Value 0 of ratio on pushbutton 5 (V820) Value of ratio on pushbutton 6 (V820) Value 2 of ratio on pushbutton 6 (V820) Value 3 of ratio on pushbutton 7 (V820) Value 4 of ratio on pushbutton 7 (V820) Value 5 of ratio on pushbutton 8 (V820) Value 6 of ratio on pushbutton 8 (V820) Value 7 of ratio on pushbutton 9 (V820) Value 8 of ratio on pushbutton 9 (V820) Value 9 of ratio on pushbutton 0 (V820) Value 20 of ratio on pushbutton 0 (V820) Value 2 of ratio on pushbutton 0 (V820) n Fixed stepping motor speed with asynchronous operation [RP] n2 Fixed stepping motor speed with manual operation by means of pushb. A / B [RP] SnS From this sewing drive speed onwards signal 9 is emitted at the control rpd Select how to start metering device 7 3 bee End of metering device at the start of the seam / seam end Flo Lift sewing foot when feeding the tape On/Off 0 34 t7 Prolongation of blowing signal during metering device t5 Delay time until start of stepping motor for metering device [ms] nfd Initiate end of stepping motor operation by thread trimming (see Parameter List) 0 37 ned Initiate end of stepping motor operation by seam end (see Parameter List) 0 40 mbs Activate tape cutting by means of external pushbutton on input in / pedal / pedal -2 4 rbs Stepping motor runs parallel during tape cutting On/Off t6 Activation time when operating the tape cutter manually at machine standstill [ms] Ft2 Tape cutter until seam end or over time SbS Function start tape tension. Last tape tension value or value selected by means 0 0 of pushbutton 90 mbs Ratios are selected via inputs in3 and in d0 Percental adaptation of the stepping motor speed up to 500 RP d02 Percental adaptation of the stepping motor speed up to 000 RP d03 Percental adaptation of the stepping motor speed up to 500 RP d04 Percental adaptation of the stepping motor speed up to 2000 RP d05 Percental adaptation of the stepping motor speed up to 2500 RP d06 Percental adaptation of the stepping motor speed up to 3000 RP d07 Percental adaptation of the stepping motor speed up to 3500 RP d08 Percental adaptation of the stepping motor speed up to 4000 RP d09 Percental adaptation of the stepping motor speed up to 4500 RP d0 Percental adaptation of the stepping motor speed up to 5000 RP c7 Correction factor when switching to fast tape feeding c8 Correction factor when switching to slow tape feeding Selection of insertable strip for V Selection of insertable strip for V tf Function of pushbutton A on the V80/V820 control panels tf2 Function of pushbutton B on the V80/V820 control panels See chapter Parameter List for values of the general parameters as well as for more detailed explanations of the above parameters. DC drive parameters: Sign Function Parameter n2 aximum speed n7 Trimming speed 6 n2 Automatic speed 8 t3 Start delay from lifted foot 202

18 EFKA 20A Timing Diagram Automatic etering Device (Pa. 290=) - / n n2 n2 n7 DC POS. ST2/ POS.2 ST2/2 FL ST2/35 t3 L ST2/32 c c2 8 (B) ST/24 t5 c3 n 3 (BL) ST/27 in ST/7 0262/ODE-a Abbreviations: >> = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) 3 (BL) = Blowing 8 (B) = Tape cutter in = Pushbutton for tape cutter Parameter setting of stepping motor control for above timing diagram: Sign Function Parameter ode of operation automatic metering device at the start of the seam 290 = n Stepping motor speed for metering device 2 etering device by means of number of steps 3 = 0 Tape cutter until seam end 43 = 0

19 9 EFKA 20A Timing Diagram 2 Automatic etering Device at the Start of the Seam (Pa. 290=) - + / n n2 n2 n7 DC POS. ST2/ POS.2 ST2/2 FL ST2/35 t3 L ST2/32 c c2 t5 n 8 (B) t ST/24 3 (BL) ST/27 in ST/7 in5/sensor ST/5 0262/ODE-b Abbreviations: >> = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) 3 (BL) = Blowing 8 (B) = Tape cutter in = Pushbutton for tape cutter in5 = Sensor for switching off the metering device Parameter setting of stepping motor control for above timing diagram: Sign Function Parameter ode of operation automatic metering device at the start of the seam 290 = n Stepping motor speed for metering device 2 etering device limited by sensor 3 = Tape cutter over time 43 =

20 EFKA 20A Timing Diagram Automatic etering Device at the Seam End (Pa. 290=2) / n n2 n2 n7 DC POS. ST2/20 POS.2 ST2/2 FL ST2/ L ST2/32 c c2 t5 c3 n 8 (B) t ST/24 3 (BL) ST/27 in ST/7 0262/ODE-2a Abbreviation: >> = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) 3 (BL) = Blowing 8 (B) = Tape cutter in = Pushbutton for tape cutter Parameter setting of stepping motor control for above timing diagram: Sign Function Parameter ode of operation automatic metering device at the seam end 290 = 2 n Stepping motor speed for metering device 2 etering device by means of number of steps 3 = 0 Tape cutter until seam end 43 = 0

21 2 EFKA 20A Timing Diagram 2 Automatic etering Device at the Seam End (Pa. 290=2) / n n2 n2 n7 DC POS. ST2/20 POS.2 ST2/2 FL ST2/ L ST2/32 c c2 t5 n 8 (B) t ST/24 3 (BL) ST/27 in ST/7 in5/sensor ST/5 0262/ODE-2b Abbreviation: >> = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) 3 (BL) = Blowing 8 (B) = Tape cutter in = Pushbutton for tape cutter in5 = Sensor for switching off the metering device Parameter setting of stepping motor control for above timing diagram: Sign Function Parameter ode of operation automatic metering device at the start of the seam 290 = n Stepping motor speed for metering device 2 etering device limited by sensor 3 = Tape cutter over time 43 =

22 EFKA 20A Stepping otor Function Expander Feeding (Pa. 290=3) Functions Parameter Expander feeding 290 = 3 Insertable strip 02 for V80 control panel 29 = 2 Insertable strip 02 for V820 control panel 292 = 2 Connection of a pushbutton for tape cutter to socket ST/7 (in) Connection of a pushbutton for reset to socket ST/ (in2) Connection of a pushbutton for selection of tape tension 6... and/or 8... to socket ST/6 (in3) Connection of a pushbutton for selection of tape tension...6 and/or...8 to socket ST/8 (in4) Connection of a pushbutton for sensor to socket ST/5 (in5) Connection of a pushbutton for expander feeding to socket ST/2 (in6) variocontrol 80 P E A B KL2449 Pushbutton = - Setting tape tension or 2 (ratio stepping motor/d.c. drive) Pushbutton 2 = - Setting tape tension 3 or 4 (ratio stepping motor/d.c. drive) Pushbutton 3 = - Setting tape tension 5 or 6 (ratio stepping motor/d.c. drive) Pushbutton 4 = - Setting the number of stepping motor steps for expander feeding Pushbutton A = - Direction of rotation of stepping motor: ccw according to speed setting of parameter 3 Pushbutton B = - Direction of rotation of stepping motor: cw according to speed setting of parameter 3 variocontrol 820 P E A B KL2450 Pushbutton...9 = Setting tape tension...8 (ratio stepping motor/d.c. drive) Pushbutton 0 = Setting the number of stepping motor steps for expander feeding Pushbutton A = Direction of rotation of stepping motor: ccw according to speed setting of parameter 3 Pushbutton B = Direction of rotation of stepping motor: cw according to speed setting of parameter 3

23 23 EFKA 20A570 Valid parameters if parameter 290 = 3 (expander feeding) Parameter Functions max min Preset 002 c3 Number of stepping motor steps for metering device Value of ratio on pushbutton (V80/V820) Value 2 of ratio on pushbutton (V80/V820) Value 3 of ratio on pushbutton 2 (V80/V820) Value 4 of ratio on pushbutton 2 (V80/V820) Value 5 of ratio on pushbutton 3 (V80/V820) Value 6 of ratio on pushbutton 3 (V80/V820) Value 7 of ratio on pushbutton 4 (V80/V820) Value 8 of ratio on pushbutton 4 (V80/V820) Value 9 of ratio on pushbutton 5 (V820) Value 0 of ratio on pushbutton 5 (V820) Value of ratio on pushbutton 6 (V820) Value 2 of ratio on pushbutton 6 (V820) Value 3 of ratio on pushbutton 7 (V820) Value 4 of ratio on pushbutton 7 (V820) Value 5 of ratio on pushbutton 8 (V820) Value 6 of ratio on pushbutton 8 (V820) Value 7 of ratio on pushbutton 9 (V820) Value 8 of ratio on pushbutton 9 (V820) Value 9 of ratio on pushbutton 0 (V820) Value 20 of ratio on pushbutton 0 (V820) Value 2 of ratio on pushbutton 0 (V820) n Fixed stepping motor speed with asynchronous operation [RP] n2 Fixed stepping motor speed with manual operation by means of pushb. A / B [RP] rpd Select how to start metering device 7 3 bee End of metering device at the start of the seam / seam end t7 Prolongation of blowing signal during metering device t5 Delay time until start of stepping motor for metering device [ms] nfd Initiate end of stepping motor operation by thread trimming (see Parameter List) 0 37 ned Initiate end of stepping motor operation by seam end (see Parameter List) 0 42 t6 Activation time when operating the tape cutter manually at machine standstill [ms] SbS Function start tape tension. Last tape tension value or value selected by means 0 0 of pushbutton 90 mbs Ratios are selected via inputs in3 and in Selection of insertable strip for V Selection of insertable strip for V tf Function of pushbutton A on the V80/V820 control panels tf2 Function of pushbutton B on the V80/V820 control panels See chapter Parameter List for values of the general parameters as well as for more detailed explanations of the above parameters. DC drive parameters: Sign Function Parameter n Positioning speed 0 n2 aximum speed n7 Trimming speed 6 t3 Start delay from lifted foot 202 * Expander feeding only with lifted sewing foot. *2 The stepping motor can be operated in cw direction with pushbutton B and in CCW direction with pushbutton A. *3 Parameter 3 = 0: Expander feeding limited by counting c3 (can be set with parameter 002). Parameter 3 = : Expander feeding limited by a sensor on input in5. *4 The tape cutter is activated by means of a pushbutton on socket in. The function is always possible. *5 The flip-flop signal can be switched on via input in6 and switched off via input in2. This procedure can be repeated as often as required. *6 The function expander feeding can be started by means of a pushbutton on input in6. During this function the signal blowing is emitted. This procedure can be repeated as often as required. *7 New start of expander feeding as under *.

24 EFKA 20A Timing Diagram Expander Feeding (Pa. 290=3) - / ODE-3a n DC POS. ST2/20 POS.2 ST2/2 FL ST2/35 V80/ 820 Ta. A/B Ta.B Ta.A t5 c3 n n2 n2 t5 c3 n in ST/7 in2 ST/ in6 ST/ (FF) ST/28 3 (BL) ST/27 7(L) ST/23 8 (B) ST/24 t t 9 (DR) ST/ /ODE-3b Abbreviations for d.c. drive: POS = Position on the sewing machine POS2 = Position 2 on the sewing machine FL = Sewing foot lift (automatic after power On or after thread trimming on the d.c. control) Abbreviations for stepping motor: >> = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) in = Pushbutton for tape cutter in2 = Input for reset (FF) in6 = Pushbutton for expander feeding 7 (L) = Signal stepping motor running 2 (FF) = Signal flip-flop 8 (B) = Tape cutter 3 (BL) = Signal blowing 9 (DR) = Signal direction of rotation Parameter setting of stepping motor control for above timing diagram: Sign Function Parameter ode of operation expander feeding 290 = 3 n Fixed stepping motor speed with asynchronous operation 2 n2 Fixed stepping motor speed with manual operation by means of pushbutton A and/or B 3 Start of expander feeding by means of knee switch 30 = Expander feeding by means of number of steps c3 3 = 0

25 25 EFKA 20A Timing Diagram Expander Feeding/Synchronous Stepping otor Operation (Pa.290=3) - / /ODE-3c n n2 n n2 n7 DC POS. ST2/20 POS.2 ST2/2 FL ST2/35 t3 tx 9 in ST/7 in2 ST/ in6 ST/2 2 (FF) ST/28 3 (BL) ST/27 7(L) ST/23 8 (B) ST/24 9 (DR) ST/ /ODE-3d Abbreviations for d.c. drive: POS = Position on the sewing machine POS2 = Position 2 on the sewing machine FL = Sewing foot lift Abbreviations for stepping motor: >> = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) in = Pushbutton for tape cutter in2 = Input for reset (FF) in6 = Pushbutton for expander feeding 7 (L) = Signal stepping motor running 2 (FF) = Signal flip-flop 8 (B) = Tape cutter 3 (BL) = Signal blowing 9 (DR) = Signal direction of rotation Parameter setting of stepping motor control for above timing diagram: Sign Function Parameter ode of operation expander feeding 290 = 3 Expander feeding by means of number of steps c3 3 = 0 *9 Synchronous operation according to d.c. drive speed. The transmision ratios are selected by means of pushbuttons...3 on V80 and pushbuttons...9 on V820. *0 Signal direction of rotation remains On until the direction of rotation is reversed.

26 EFKA 20A Stepping otor Function Fullness Setting (Pa. 290=5) Functions Parameter Fullness setting 290 = 5 Insertable strip 04 on V80 control panel 29 = 4 Insertable strip 04 on V820 control panel 292 = 4 Connection of a pushbutton for switching to the next value to socket ST/6 (in3) Connection of a pushbutton for switching to the previous value to socket ST/8 (in4) Connection of a sensor (limit switch) for determining the reference point to socket ST/5 (in5) Connection of a pushbutton for reset to socket ST/9 (in7) variocontrol 80 P E A B KL245 Pushbutton = - Setting fullness or 2 Pushbutton 2 = - Setting fullness 3 or 4 Pushbutton 3 = - Setting fullness 5 or 6 Pushbutton 4 = - Setting fullness 7 or 8 Pushbutton A = - Selection of fullness 8... Pushbutton B = - Selection of fullness...8 variocontrol 820 P E A B KL2452 Pushbutton...0 = - Setting fullness...20 Pushbutton A = - Selection of fullness Pushbutton B = - Selection of fullness...20

27 27 EFKA 20A Timing Diagram Fullness Setting (Pa. 290=5) POWER ON 0-PKT RESET 0-PKT -IP c3 XXX c3 XXX n n n n in5 ST/5 in7 ST/9 Abbreviations for stepping motor: >> = Direction of rotation of stepping motor: cw << = Direction of rotation of stepping motor: ccw in5 = Input for sensor for determining the reference point in7 = Pushbutton for reset 0262/ODE-5 Parameter setting of stepping motor control for above timing diagram: Sign Function Parameter c3 Compensating steps for reference point 002 n Stepping motor speed 2 XXX Value that can be selected by means of pushbuttons on the V80 and/or V control panel For fullness setting the following functions are important: Reference point adjustment after power On After power On, the stepping motor runs in reverse direction until reaching the sensor. Then it runs in cw direction. After leaving the sensor switching point, the steps set with parameter 002 and then the steps set on the control panel will be performed in cw direction. Reference point adjustment by means of pushbutton After pressing a pushbutton connected to socket ST/9, the reference point is adjusted in the same manner as after power On. Parameter 3 = 0 After power On or pressing the pushbutton on input in7, the stepping motor runs in reverse direction performing the steps set with parameter 002. Parameter 3 = The stepping motor runs in reverse direction until reaching the sensor (limit switch) on input in5 and then switches to cw direction. Then the stepping motor stops immediately after leaving the sensor. Parameter 3 = 2 Operation as with setting, however, after leaving the sensor, the stepping motor performs the steps set with parameter 002 in reverse direction. Parameter 3 = 3 Operation as with setting, after leaving the sensor, the stepping motor performs the steps set with parameter 002 in cw direction. Then after each of these settings, the stepping motor runs in cw direction performing the steps selected on the V80/V820 control panel. Parameter 90 = 0 The pushbuttons on inputs in3 and in4 serve to increase or decrease the fullness values. Pushbuttons...0 on the control panel serve only to set the maximum values. Parameter 90 = The pushbuttons on inputs in3 and in4 are disabled. The fullness values are selected directly by means of the pushbuttons on the control panel. Parameter 274 Setting the maximum number of steps which can be performed in the fullness function without interfering with the mechanism.

28 EFKA 20A Valid parameters if parameter 290 = 5 (fullness) Parameter Functions max min Preset Value of steps on pushbutton (V80/V820) Value 2 of steps on pushbutton (V80/V820) Value 3 of steps on pushbutton 2 (V80/V820) Value 4 of steps on pushbutton 2 (V80/V820) Value 5 of steps on pushbutton 3 (V80/V820) Value 6 of steps on pushbutton 3 (V80/V820) Value 7 of steps on pushbutton 4 (V80/V820) Value 8 of steps on pushbutton 4 (V80/V820) Value 9 of steps on pushbutton 5 (V820) Value 0 of steps on pushbutton 5 (V820) Value of steps on pushbutton 6 (V820) Value 2 of steps on pushbutton 6 (V820) Value 3 of steps on pushbutton 7 (V820) Value 4 of steps on pushbutton 7 (V820) Value 5 of steps on pushbutton 8 (V820) Value 6 of steps on pushbutton 8 (V820) Value 7 of steps on pushbutton 9 (V820) Value 8 of steps on pushbutton 9 (V820) Value 9 of steps on pushbutton 0 (V820) Value 20 of steps on pushbutton 0 (V820) Value 2 of steps on pushbutton 0 (V820) n Stepping motor speed [RP] bee The stepping motor runs in reverse direction until sensor, then to the set value FLo DC drive initiates the seam end 0 42 t6 Activation time when operating the tape cutter manually at machine standstill [ms] StP If the d.c. drive performs a backtack, the fullness switches to the value of Pa SbS Function start tape tension. Last tape tension value or value selected by means 0 0 of pushbutton 90 mbs Ratios are selected via inputs in3 and in bmx Setting the maximum number of steps performed in the fullness procedure Selection of insertable strip for V Selection of insertable strip for V tf Function of pushbutton A on the V80/V820 control panels tf2 Function of pushbutton B on the V80/V820 control panels See chapter Parameter List for values of the general parameters as well as for more detailed explanations of the above parameters.

29 29 EFKA 20A Timing Diagram achine for Attaching Cuff and Heel Tape with etering Device at Functions Parameter achine for attaching cuff and heel tape with metering device at the seam end 290 = 7 Insertable strip 0 for V80 control panel 29 = Insertable strip 0 for V820 control panel 292 = Connection of a pushbutton for tape cutter to socket ST/7 (in) Connection of a pushbutton for reset to socket ST/ (in2) Connection of a pushbutton for selection of tape speed 4... and/or 6... to socket ST/6 (in3) Connection of a pushbutton for selection of tape speed...4 and/or...6 to socket ST/8 (in4) Connection of a pushbutton for sensor to socket ST/5 (in5) Connection of a pushbutton for metering device to socket ST/2 (in6) variocontrol 80 P E A B 3 KL2447 Pushbutton = - Setting tape tension or 2 (ratio stepping motor/d.c. drive) Pushbutton 2 = - Setting tape tension 3 or 4 (ratio stepping motor/d.c. drive) Pushbutton 3 = - Setting the number of stitches for the d.c. drive with which the stepping motor runs in reverse direction Pushbutton 4 = - Setting the number of stepping motor steps for metering device Pushbutton A = - Pushbutton for activating the metering device Pushbutton B = - Selection of tape tension 4... (parallel with input in3) variocontrol 820 P E A B KL2448 Pushbutton...8 = - Setting tape tension...6 (ratio stepping motor/d.c. drive) Pushbutton 9 = - Setting the number of stitches for the d.c. drive with which the stepping motor runs in reverse direction Pushbutton 0 = - Setting the number of stepping motor steps for metering device Pushbutton A = - Pushbutton for activating the metering device Pushbutton B = - Selection of tape tension...6 (parallel with input in3)

30 EFKA 20A Valid parameters if parameter 290 = 7 (machine for attaching cuff and heel tape) Parameter Functions max min Preset 000 c Number of d.c. drive stitches at the start of the seam until start of the stepping motor in reverse direction 00 c2 Number of stitches that the stepping motor runs in reverse direction for tape tension 002 c3 Number of stepping motor steps for metering device Value of ratio on pushbutton (V80/V820) Value 2 of ratio on pushbutton (V80/V820) Value 3 of ratio on pushbutton 2 (V80/V820) Value 4 of ratio on pushbutton 2 (V80/V820) Value 5 of ratio on pushbutton 3 (V80/V820) Value 6 of ratio on pushbutton 3 (V80/V820) Value 7 of ratio on pushbutton 4 (V80/V820) Value 8 of ratio on pushbutton 4 (V80/V820) Value 9 of ratio on pushbutton 5 (V820) Value 0 of ratio on pushbutton 5 (V820) Value of ratio on pushbutton 6 (V820) Value 2 of ratio on pushbutton 6 (V820) Value 3 of ratio on pushbutton 7 (V820) Value 4 of ratio on pushbutton 7 (V820) Value 5 of ratio on pushbutton 8 (V820) Value 6 of ratio on pushbutton 8 (V820) Value 7 of ratio on pushbutton 9 (V820) Value 8 of ratio on pushbutton 9 (V820) Value 9 of ratio on pushbutton 0 (V820) Value 20 of ratio on pushbutton 0 (V820) Value 2 of ratio on pushbutton 0 (V820) n Fixed stepping motor speed with asynchronous operation [RP] n2 Fixed stepping motor speed with manual operation by means of pushb. A / B [RP] SnS From this sewing drive speed onwards signal 9 is emitted at the control rpd Select how to start metering device 7 3 bee End of metering device at the start of the seam / seam end Flo Lift sewing foot when feeding the tape On/Off 0 34 t7 Prolongation of blowing signal during metering device t5 Delay time until start of stepping motor for metering device [ms] nfd Initiate end of stepping motor operation by thread trimming (see Parameter List) 0 37 ned Initiate end of stepping motor operation by seam end (see Parameter List) 0 40 mbs Activate tape cutting by means of external pushbutton on input in / pedal / pedal -2 4 rbs Stepping motor runs parallel during tape cutting On/Off t6 Activation time when operating the tape cutter manually at machine standstill [ms] Ft2 Tape cutter until seam end or over time SbS Function start tape tension. Last tape tension value or value selected by means 0 0 of pushbutton 90 mbs Ratios are selected via inputs in3 and in d0 Percental adaptation of the stepping motor speed up to 500 RP d02 Percental adaptation of the stepping motor speed up to 000 RP d03 Percental adaptation of the stepping motor speed up to 500 RP d04 Percental adaptation of the stepping motor speed up to 2000 RP d05 Percental adaptation of the stepping motor speed up to 2500 RP d06 Percental adaptation of the stepping motor speed up to 3000 RP d07 Percental adaptation of the stepping motor speed up to 3500 RP d08 Percental adaptation of the stepping motor speed up to 4000 RP d09 Percental adaptation of the stepping motor speed up to 4500 RP d0 Percental adaptation of the stepping motor speed up to 5000 RP c7 Correction factor when switching to fast tape feeding c8 Correction factor when switching to slow tape feeding Selection of insertable strip for V Selection of insertable strip for V tf Function of pushbutton A on the V80/V820 control panels tf2 Function of pushbutton B on the V80/V820 control panels See chapter Parameter List for values of the general parameters as well as for more detailed explanations of the above parameters.

31 3 EFKA 20A Timing Diagram achine for Attaching Cuff and Heel Tape with etering Device at the Seam End (Pa. 290=7) - + / n n2 n7 DC POS. ST2/ 20 POS.2 ST2/ 2 FL ST2/ 35 L ST2/ 32 8 (B) t5 c3 n t ST/ 24 3 (BL) ST/ 27 in ST/ 7 in8 ext. LS ST/ / ODE-7 Abbreviations: >> = Direction of rotation of stepping motor: ccw (speed synchronous with d.c. drive) << = Direction of rotation of stepping motor: cw (speed synchronous with d.c. drive) 3 (BL) = Blowing 8 (B) = Tape cutter in = Pushbutton for tape cutter in8 = External light barrier DC drive parameters: Sign Function Parameter n2 aximum speed n7 Trimming speed 6 Stepping motor control parameters: Sign Function Parameter ode of operation machine for attaching cuff and heel tape with metering 290 = device at the seam end 43 = 0 c3 Number of stepping motor steps for metering device after seam end 002 n Stepping motor speed for metering device 2 = 00 Start: Insert tape with external light barrier covered uncovered 30 = 7 etering device by means of number of steps 3 = 0 t5 Delay time after d.c. drive standstill until start of the stepping motor 35 t6 Activation time when operating the tape cutter manually at machine standstill 42 Tape cutter until seam end 43 = 0

32 EFKA 20A Stepping otor Function Puller (Pa. 290=8 / 9) Functions Parameter Puller operation (operation with one sewing machine control) 290 = 8 Puller operation (without serial communication) 290 = 9 anual puller operation by means of pushbutton (flip-flop) 4 = Lockstitch mode on the main drive: 42 = 0 Stepping motor runs in reverse direction when the backtacking solenoid is activated Insertable strip 03 for V80 control panel 29 = 3 Insertable strip 03 for V820 control panel 292 = 3 Connection of a pushbutton for puller lifting/lowering to socket ST/0 (in8) variocontrol 80 P + E KL A B Pushbutton = Setting the puller reduction ratio or 2 Pushbutton 2 = Setting the puller reduction ratio 3 or 4 Pushbutton 3 = Setting the puller reduction ratio 5 or 6 Pushbutton 4 = Puller function On/Off with display and possibility of setting how long the puller must remain lifted after the start backtack (see also parameter 50) Pushbutton A = Pushbutton for manual puller lifting (parallel to input in8) Pushbutton B = Selection of puller reduction ratio...6 variocontrol 820 P E A B KL2454a Pushbutton...7 = Setting the puller reduction ratio...4 Pushbutton 8 = Setting the delay stitches until puller lowering Pushbutton 9 = Off Puller is not lifted when sewing foot is ON On Puller is always lifted together with the sewing foot Pushbutton 0 = Puller function On/Off with display and possibility of setting how long the puller must remain lifted after the start backtack (see also parameter 50) Pushbutton A = Pushbutton for manual puller lifting (parallel to input in8) Pushbutton B = Selection of puller reduction ratio...4

33 33 EFKA 20A570 Valid parameters if parameter 290 = 8 (puller) Parameter Functions max min Preset 002 c3 Number of stepping motor steps for metering device Value of ratio on pushbutton (V80/V820) Value 2 of ratio on pushbutton (V80/V820) Value 3 of ratio on pushbutton 2 (V80/V820) Value 4 of ratio on pushbutton 2 (V80/V820) Value 5 of ratio on pushbutton 3 (V80/V820) Value 6 of ratio on pushbutton 3 (V80/V820) Value 7 of ratio on pushbutton 4 (V80/V820) Value 8 of ratio on pushbutton 4 (V80/V820) Value 9 of ratio on pushbutton 5 (V820) Value 0 of ratio on pushbutton 5 (V820) Value of ratio on pushbutton 6 (V820) Value 2 of ratio on pushbutton 6 (V820) Value 3 of ratio on pushbutton 7 (V820) Value 4 of ratio on pushbutton 7 (V820) Value 5 of ratio on pushbutton 8 (V820) Value 6 of ratio on pushbutton 8 (V820) Value 7 of ratio on pushbutton 9 (V820) Value 8 of ratio on pushbutton 9 (V820) Value 9 of ratio on pushbutton 0 (V820) Value 20 of ratio on pushbutton 0 (V820) Value 2 of ratio on pushbutton 0 (V820) n Fixed stepping motor speed with asynchronous operation [RP] n2 Fixed stepping motor speed with manual operation by means of pushb. A / B [RP] bee End of metering device at the start of the seam / seam end t7 Prolongation of blowing signal during metering device t5 Delay time until start of stepping motor for metering device [ms] nfd Initiate end of stepping motor operation by thread trimming (see Parameter List) 0 37 ned Initiate end of stepping motor operation by seam end (see Parameter List) 0 42 t6 Activation time when operating the tape cutter manually at machine standstill [ms] mpl anual puller operation by means of pushbutton (flip-flop) 3 5 StP Lockstitch mode on the main drive 0 52 SbS Function start tape tension. Last tape tension value or value selected by means 0 0 of pushbutton 80 itm Intermittent stepping motor operation 0 82 c Stepping motor impulses during feeding with intermittent operation mbs The values of the steps are selected via inputs in3 and in GE Number of increments per rotation d0 Percental adaptation of the stepping motor speed up to 500 RP d02 Percental adaptation of the stepping motor speed up to 000 RP d03 Percental adaptation of the stepping motor speed up to 500 RP d04 Percental adaptation of the stepping motor speed up to 2000 RP d05 Percental adaptation of the stepping motor speed up to 2500 RP d06 Percental adaptation of the stepping motor speed up to 3000 RP d07 Percental adaptation of the stepping motor speed up to 3500 RP d08 Percental adaptation of the stepping motor speed up to 4000 RP d09 Percental adaptation of the stepping motor speed up to 4500 RP d0 Percental adaptation of the stepping motor speed up to 5000 RP c7 Correction factor when switching to fast tape feeding c8 Correction factor when switching to slow tape feeding Selection of insertable strip for V Selection of insertable strip for V tf Function of pushbutton A on the V80/V820 control panels tf2 Function of pushbutton B on the V80/V820 control panels See chapter Parameter List for values of the general parameters as well as for more detailed explanations of the above parameters.