H&H P280 Скачать руководство пользователя страница 7 | Manualshive

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H&H P280 Скачать руководство пользователя страница 7

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C O N T R O L L E R S T R U C T U R E

The P280 is constructed around a Micro Controller chip and the rest of the electronic components are only to
support the chip. The physical boards and their components are referred to as HARDWARE and the program
that operates the controller and resides in the chip is called the SOFTWARE. The variables which make up the
weld schedules are stored in MEMORY and can be viewed and/or changed. There are two clocks in the system.
One clock is crystal controlled and operates at 4 million cycles per second and is the time base for all the welding
functions.

The  SOFTWARE  has  been  written  to  operate  in  a  fixed  manner  and  must  use  the  values  that  the
programmer/operator has placed in the weld schedules.  A weld schedule may contain up to 15 variables and
there are 100 possible schedules.  So, with 100 schedules and 15 variables, there has to be 1500 memory locations
or boxes, where a number or command can be kept.

The SOFTWARE will allow the operator to look at the contents of any box, or memory, and leave it alone or
change the controls. When the controller has been placed in the WELD schedule position (Home) and the
footswitch first stage is depressed, the control will move to the SQUEEZE mode. It will use the value in that
memory location to set the timer. NOTE: The SQUEEZE function is pre-set at (2).

When the second footswitch stage is depressed, the software will sequence through each step using the values
found in each appropriate box.

Three other variables that are stored for each schedule are REPEAT, WELD and SEAM.  Repeat is used in spot
welding mode when automatic repeating is used for rapid consecutive welds by holding down the footswitch.
Weld,  and  therefore,  No  Weld,  can  be  used  for  sequencing  the  control,  checking  weld  pressure,  material
positioning and timing without weld current.  Seam will force the control to use Squeeze and then cycle through
the Cool/Up Slope/Heat Down Slope sequence continuously until the footswitch is released.  At this point, the
Hold and Off will complete.

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Содержание P280

Страница 1: ...CONTROLLER H H RESISTANCE WELDERS 28701 S Hwy 125 Afton OK 74331 USA Toll Free 800 835 2965 Tel 918 257 5150 Fax 918 257 4550 www hhwelders com hhwelders wavelinx net OUR HANDSHAKE IS AS STRONG AS OU...

Страница 2: ...2 NOTICE FOR CUSTOMER MAINTENANCE MACHINE OPERATORS T I P C L E A R A N C E N O T T O...

Страница 3: ...Government Safety Standards and All Industrial Safety Standards INDEMNIFICATION User agrees to indemnify and hold harmless Seller of and from any and all claims or liabilities from accidents involving...

Страница 4: ...repaired or at our option replaced without charge for material Freight will be charged for shipment back to the customer Should you require to return the unit for repairs you must ship both the PSIO a...

Страница 5: ...r 50 or 60 cycles second An extremely valuable monitor circuit is the power input fluctuation monitor which has a convenient indicator located on the Power Supply Input Output PSIO board on the rear o...

Страница 6: ...through the head of side skin Therefore no holes are punched in the cabinet so each installation can be flexible For control unit only a 1 5 inch hole is ample for passage Control with SCR pack will...

Страница 7: ...e a number or command can be kept The SOFTWARE will allow the operator to look at the contents of any box or memory and leave it alone or change the controls When the controller has been placed in the...

Страница 8: ...n Program variables are stored in EPROM No Battery Required and are called for viewing by depressing the B button Each depression will advance the program location one position The WELD Schedule indic...

Страница 9: ...If the repeat and seam modes are off then timer defaults and acts like a normal anti tie down mode To set the timer register advance to the IMPULSES register with the B key Then press and hold the F...

Страница 10: ...any time the operator changes squeeze time he should also check the time delay register Caution should be used when setting the motor delay If the delay value is much greater than the combined value o...

Страница 11: ...epeat Repeat sequence until footswitch is Spot ONLY I N D I C A T O R D E F I N I T I O N F U N C T I O N 1 Dual 7 Segment Display A two digit display reading weld schedule number or program data in m...

Страница 12: ...wer due to it s own weight 5 ST1 LED When illuminated the first stage of the footswitch has been activated 6 ST2 LED When illuminated the second stage of the footswitch has been activated S T A T U S...

Страница 13: ...he number of times the heat cool sequence occurs for the weld schedule Depress Key B IMPULSES OFF UP CYCLES OFF UP MAX ON 6 UP Cycle 0 1 to 9 9 The UP parameter is also called UPSLOPE The control will...

Страница 14: ...N b All displays dark for 1 to 2 seconds c Line frequency displayed for 1 second d Weld Schedule in window and Weld Schedule LED lit or 88 if footswitch closed Check ST1 and or ST2 if lit e Weld Sched...

Страница 15: ...e wave JP3 8 Line Sync 5V 60 Hz pulse normally low Active on JP2 4 rising edge U5 38 Microprocessor 4MHz 440 Hz Clock 3 SYNC Test Point Function Value JP3 7 Sync lost 5V active when sync lost JP3 6 Se...

Страница 16: ...aged it is recommended to discontinue operating the welder and immediately disconnect the main power until proper repairs have been made Damage to the main welding transformer can occur if the main po...

Страница 17: ...classification is SINGLE PHASE and THREE PHASE Single phase three phase refers to the type of input power that must be supplied for your machine However each of these two classes has characteristics t...

Страница 18: ...ces and then grow into a nugget as the weld time progresses CONTACTING SURFACES Contacting surfaces consist of the electrodes and the material being welded To reduce the resistance at the electrode ti...

Страница 19: ...e to the electrodes due to pitting and spitting DEFINITIONS OF TERMS ARM The extension from frame to hold the electrode assembly COOL TIME Current off cooling time in an impulse ELECTRODE Device to ap...

Страница 20: ...he next location SEQUENCE OPTIONS Precompression pre heat quench and temper are four typical optional intervals or functions that may be supplied with your sequence The sequence will consist of the fo...

Страница 21: ...remain at the high level In Variable Pressure electrode force rises to the high level at the beginning of hold Variable Pressure machines can also be used in the Constant Low and Constant High modes I...

Страница 22: ...rfaces or use solvents 3 Months Inspect entire Inspect all air lines and connections pneumatic system for leaks Replace any worn or damaged hoses Use certified tip force gauge in lieu of calibration o...

Страница 23: ...se lithium grease w diaphragm head assy Monthly Clean air element Turn off air supply and remove element at air filter from filter housing Clean with clear warm water or recommended solvent Blow out w...

Страница 24: ...elding may lead to cracking problems SPOT SPACING If spots are located too close to each other a large portion of the welding current to produce the second or subsequent spots will shunt through the s...

Страница 25: ...strength SURFACE BURNING CAN BE CAUSED BY 1 Dirty material or fouled electrodes 2 Too much penetration of nugget 3 Improper machine sequence Usually simple visual inspection will be sufficient to obs...

Страница 26: ...hanical properties of the weld To minimize porosity use clean material and avoid expulsion Unit pressure must be high Some times a combination of dissimilar metals will be prone to give porosity Usual...

Страница 27: ...If failure occurs by shearing through the nugget the weld is considered unsatisfactory If failure occurs by tearing a button from the sheet the weld is considered satisfactory The twist test consists...

Страница 28: ...variation should be stated B Establish what size class and contour electrodes are to be used with each weld setting and specify how often the operator is to replace electrodes C Establish procedure fo...

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