Hyd-Mech H28A-120 Service And Parts Manual Download Page 28

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1.14

EARTH GROUNDING PROCEDURE

The customer is to provide and install a ground rod approximately .60 (15mm) diameter, copper clad steel, to be

driven no less than 8’ (2.5m) into the ground, no more than 10’ (3m) away from control enclosure.

The ground rod is to be connected to customer’s in plant ground system. This connection shall be made directly

at the ground rod. (If applicable).

It is desirable that the overall resistance to ground measured at the ground rod does not exceed 3 ohms.

Customer is advised to consult local power company for further information on grounding.

The ground rod is to be connected to the ground terminal in the control enclosure using insulated, stranded

copper wire. The wire gauge size is to be determined according to the electrical code of the customers

local electrical authority.

An additional point to check is to ensure continuity of all ground within the control enclosure. Start with the main

power entrance ground terminal where the internal ground conductors should originate and then connect to, the

DIN terminal strip, control transformer, and the lid of control enclosure. Also, the PLC and Interface units

should have their own ground conductors connected to one of the main ground terminals.

A properly functioning ground system will:

provide safety for personnel.

ensure correct operation of electrical/electronic apparatus.

prevent damage to electrical/electronic apparatus.

help dissipate lightning strikes.

divert stray radio frequency (RF) energy from electronic/control equipment.

HYDRAULIC OIL AND CUTTING FLUID

The H28A 120 bandsaw is supplied with Texaco Rando HD46 hydraulic oil. If it is necessary to change the oil to a different

brand, see the HYDRAULIC SECTION for an equivalent grade of oil.

No cutting fluid is supplied with the machine. There are two types of coolant available:

•

Oil-based; dilute 1:10 ratio (one part concentrated coolant to 10 parts water)

•

Synthetic; dilute as recommended by the manufacturer

Summary of Contents for H28A-120

Page 1: ...ture reference in a known location and easily accessible to all users of the device HYD MECH offers a great variety of options components and features for its various models Therefore some of the equipment described in this manual various illustrations and drawings may not be applicable to your particular machine The information and specifications provided in this manual were accurate at the time ...

Page 2: ......

Page 3: ...ONNECTIONS 1 10 MACHINE GUARD INSTALLATION 1 11 WIRING CONNECTIONS 1 13 EARTH GROUNDING PROCEDURE 1 14 HYDRAULIC OIL AND CUTTING FLUID 1 14 SECTION 2 OPERATING INSTRUCTIONS BLADE BASICS 2 1 VARIABLE SPEED CONTROL 2 1 THE CONTROL PANEL 2 1 START UP 2 1 PLC 100 CONTROL SYSTEM 2 2 MANUAL MODE 2 5 SINGLE CUT MODE OPERATION 2 6 AUTOMATIC OPERATION 2 7 WORKING WITH A QUEUE 2 8 WORKING WITH A REPEATING Q...

Page 4: ...NG 3 14 MITSUBISHI PLC INPUTS AND OUTPUTS 3 19 M12 PIN ASSIGNMENTS FOR M12 I P O P DEVICES 3 20 SECTION 4 ELECTRICAL ELECTRICAL SCHEMATICS SEE PDF ON ATTACHED CD 4 1 SECTION 5 HYDRAULIC HYDRAULIC SCHEMATICS PLUMBING DIAGRAMS SEE PDF ON ATTACHED CD 5 1 SECTION 6 MECHANICAL ASSEMBLIES MECHANICAL ASSEMBLY DRAWINGS PARTS LIST SEE PDF ON ATTACHED CD 6 1 SECTION 7 OPTIONS OPTIONAL ASSEMBLY DRAWINGS SEE ...

Page 5: ...al Materials are within designed specifications and are non hazardous Owner is responsible to Keep Manual accessible at the machine Ensure only reliable fully trained personnel work with the machine Clearly define responsibilities of all personnel working with the machine Keep the machine in good working order Operator and Maintenance Personnel are responsible to Keep all safety equipment in order...

Page 6: ...azards associated with what you are doing That should get your brain working again Certainly production is important but if you think you re too busy to put safety first think how much production you ll lose if you get hurt You owe it to yourself your family and your co workers to PUT SAFETY FIRST Mandatory Information All persons operating this machine must have read and understood all of the fol...

Page 7: ...nnot accept any liability for personal injury or property damage due to operator errors or non compliance with the Safety and Operating Instructions contained in this Manual RESPONSIBILITIES OF THE OWNER Organization of work This Operation and Maintenance Manual must always be kept near the machine so that it is accessible to all concerned The general statutory and other legal regulations on accid...

Page 8: ...t on the machine must be checked At the start of every shift After maintenance and repair work When starting for the first time and after prolonged shutdowns Emergency Stop Button E Stops Always be aware of the location of the Emergency Stop Button s Do not allow material or objects to block your access to an Emergency Stop Damage If any changes capable of impairing safety are observed in the mach...

Page 9: ...cessity to pick them off the machine by hand Hearing protection Ear protection must be worn whenever necessary The level and duration of noise emission requiring hearing protection depends upon the national regulations in the country in which the machine is being used The actual level of noise emission by band sawing machines depends upon work piece size shape and material blade type blade speed a...

Page 10: ...ARD LABELS The safety hazard labels attached to your machine represent important safety information to help you avoid personal injury or death All supervisors operators and maintenance personnel must locate and understand the safety information associated with each hazard label prior to operating or servicing the machine The safety hazard labels shown below are located at various positions on the ...

Page 11: ...Keep hands clear of vises and work piece when vises are opened or closed Be aware that vise closing or opening may result in potentially dangerous work piece movement Be aware also that the opening motion of a vise may create potential pinch points MOVING PARTS CAN CRUSH AND CUT Keep hands clear of chip auger Lock out power in accordance with your company s lock out procedures before attempting to...

Page 12: ...0 8 Item 391335 Item 391938 ...

Page 13: ...0 9 Item 391937 Idler Guide Arm Drive Guide Arm Item 391340 ...

Page 14: ...0 10 Fixed Vise Shuttle Vise Item 392801 ...

Page 15: ...AROUND THE SAW SHOULD BE MAINTAINED IN A CLEAN AND TIDY CONDITION TO AVOID OBSTACLES OPERATORS COULD TRIP OVER THE H28A 120 SHOULD ONLY BE OPERATED ACCORDING TO THE SPECIFICATIONS OF THE SAW AVOID UNSAFE USAGE PRACTICES IF AT ANY TIME THE SAW DOES NOT APPEAR TO BE OPERATING PROPERLY IT SHOULD BE STOPPED IMMEDIATELY AND REPAIRED OPERATOR THE SAW SHOULD NEVER BE OPERATED UNLESS ALL GUARDS AND DOORS ...

Page 16: ...ger conveyor system Six leveling screws are provided one in each corner of the machine base plus two in the hydraulic cabinet Steel plates are to be placed under each screw to prevent their sinking into the concrete floor In cases where the machine is to be anchored permanently anchoring holes are provided They are located next to the leveling screws NOTE In some cases leveling the saw with a slig...

Page 17: ...machine are the front section and the conveyor section The installation consists of the following sections 1 Mechanical 2 Hydraulic 3 Electrical 4 Guard 1 Mechanical Installation Remove the bracket that holds the limit switch targets This will need to be installed after the conveyor and the main machine have been fastened together The conveyor and the main machine need to be connected together 2 B...

Page 18: ...ch length of the conveyor Steel plates are to be placed under each screw to prevent their sinking into the concrete floor In cases where the machine is to be anchored permanently anchoring holes are provided They are located next to the leveling screws NOTE Leveling the infeed conveyor with a slight slope towards the blade will prevent coolant from running down the raw stock ...

Page 19: ...he conveyor to its base and to prevent the shuttle from moving Once the conveyor has been leveled to the bandsaw remove supports A shuttle support bracket must be removed in order for the shuttle to move The bracket is located on the same side as the shuttle gearmotor assembly ...

Page 20: ...t line the barfeed table Unpack and unravel the cable track holding the wires and hoses for the barfeed shuttle Once all cables hoses have been connected re install cable tray covers and bolts Fasten the two brackets that will hold the cable track in place ...

Page 21: ...1 7 Connect both cables to the electric motor as shown Connect the cables for the limit switches as shown in the picture below CABLE 17 TOP CABLE 19 MIDDLE CABLE 18 BOTTOM ELECTRICAL CONNECTIONS ...

Page 22: ...ONNECTIONS SHUTTLE VISE HOSE CONNECTIONS Remove cover located towards the top of the shuttle frame Feed hoses 21L and 22E up through the column and attach as shown Re Install the cover when finished Line 21L Line 22E ...

Page 23: ...9 The following hydraulic junction block is located on the drive side shuttle vise frame Connect hose 21 and 22 as shown Line 21 Line 22 Cable tie the bundle of hoses cables to the gearbox as shown below ...

Page 24: ...1 10 SQUARING VISE OPTION HOSE CONNECTIONS Feed hose 82E up through the column and attach as shown Attach hoses 81 and 82 as shown Line 82E Line 81 Line 82 ...

Page 25: ...eyor The idler side guard is connected to the machine column and the drive side is connected to the control box The rear guard is connected to the conveyor and to the two sides with a bracket A pulley is mounted on a bracket and attached to each rear corner of the safety guard H22A 120 Machine ...

Page 26: ...h two hex bolts Attach the eyebolt to the idler side column Fasten the wire rope to the spring and then proceed to feed it through the eye bolts and pulleys along the guide rail Loop the other end of the wire rope around the eyebolt of the trip wire control box Tighten or loosen the idler side column eyebolt to adjust the tension on the wire rope The switch can not be activated if there is not eno...

Page 27: ... run on three phase voltage as indicated on the serial plate and voltage label Power connection to the machine is made to L1 L2 L3 and Ground terminals in the main electrical box found beside the conveyor on the drive side For machines equipped with a variable frequency drive unit an earth ground is also recommended During the initial hook up it is very important to check that the phase order is c...

Page 28: ...und within the control enclosure Start with the main power entrance ground terminal where the internal ground conductors should originate and then connect to the DIN terminal strip control transformer and the lid of control enclosure Also the PLC and Interface units should have their own ground conductors connected to one of the main ground terminals 6 A properly functioning ground system will pro...

Page 29: ... accuracy and blade life After break in the following six points must be closely monitored to ensure long blade life 1 Proper blade tension should be maintained See Section 3 Maintenance and Troubleshooting 2 Generous coolant application is essential with most materials A high quality and well mixed coolant will extend blade life and also increase cutting rate and quality On those materials where ...

Page 30: ...NOT DISPLAYED ALL THE TIME ADDITIONAL FUNCTIONS MAY BE ACCESSED BY PRESSING THE FUNCTION BUTTON LABELED NEXT IF DISPLAYED There is also a numeric keypad and a set of navigation keys to the right of the display All of these as well as the EMERGENCY STOP button detailed descriptions follow To power up the control panel the EMERGENCY STOP button must be pulled out The display screen will scroll throu...

Page 31: ...oach each job is programmed with required quantity of 4 In multi Queue approach each job only has a quantity of 1 but the queue required is set to 4 Auto Queue A A A A B B B B C C C C Multi Queue A B C A B C A B C A B C The same number of parts are cut but Multi Queue procedures the parts in sets and the first complete set is available much sooner if large quantities are being cut FUNCTION DESCRIP...

Page 32: ...t the coolant flow COOLANT OFF Pressing this key will stop the coolant flow COOLANT AUTO Pressing this key will cause the coolant to flow only when the blade is running OR when the blade is running and the head is descending MODE CONTROLS SERVICE MODE The SERVICE MODE allows the user to adjust the various PLC parameters The user will be prompted for a password Contact Hyd Mech Group Limited to acc...

Page 33: ...2 5 MANUAL MODE MANUAL MODE is the default mode All functions are enabled when in MANUAL MODE The screen will look as follows PLC Operator Interface and Labeled Buttons ...

Page 34: ...ead Down push buttons and then press enter Position the blade about 3 8 above material 8 If the blade is not running you will be prompted by the words BLADE START Start the blade and adjust the blade speed as required 9 When the cut is completed the head will rise to the set material height the blade will stop and the display window will reset for the next cut 10 To cut another piece repeat steps ...

Page 35: ... be programmed at this time To run a certain job press the QUEUE key and then CLEAR to clear the QUEUE Move the cursor to the 1st job and key in the desired JOB 2 After the values are entered press the CYCLE START button The Material Height Prompt Screen appears 3 Set the material height using the Head Up Head Down push buttons and then press enter Position the blade about 3 8 above material 4 The...

Page 36: ...en entered in the POWER DWN TIMER parameter or continue running the specified time up to a maximum of 180 minutes The machine will automatically advance the stock between jobs for trim cuts as needed WORKING WITH A REPEATING QUEUE The QUEUE mode can also be set to repeat the sequence of jobs up to 99 times To do this the QUEUE parameter in SERVICE mode must be set at REPEAT To run a repeating queu...

Page 37: ... button on the panel These parameters can be changed without a password COOLANT SELECTION In Auto Mode press the NEXT coolant button to move to AUTO MODE 2 Use the FLODD MIST button to select the different type of coolant Use the RETURN button to return to the previous screen ...

Page 38: ...e home and closed during cut BROKEN PROX Allows user to override signal from proximity switch in case it is broken When set to NO machine will not run with broken proximity sensor Set to YES allows machine to run but with out blade speed display blade breakage or stall protection MIN BLD SPEED Minimum blade speed on which blade breakage will be activated SPD PROX DELAY Delay in monitoring of the b...

Page 39: ...kwise rotation to decrease The FINE METERING DDF VALVE is equipped with two Feed Control Knobs Extra fine Micrometer style Knob and Fine Metering Knob The main difference between both Feed Controls is that the Extra Fine Metering valve does not work with the Feed Force Limit Valve It is recommended to use only one feed control at a time with the second control valve shut The choice of control is a...

Page 40: ... W inches or mm Effective material width W in for most common shapes of materials is the widest solid part of the material to be in contact with blade during cutting For simple shapes as illustrated on the chart this can be directly measured For bundles of tubes and structurals measuring the effective width is difficult Effective width is 60 to 75 of the actual material width Material Width Chart ...

Page 41: ... See the graph below EXAMPLE When cutting a solid which is 1 2 of machine capacity using the graph locate 50 on the horizontal line and travel upwards to the plotted line and then travel directly across to the vertical FF Setting line The point that you have arrived at shows a setting of 40 for a piece 50 of capacity OF FF SETTING MAT L WIDTH AS OF SAW CAPACITY CUTTING STRUCTURALS A reduced Feed F...

Page 42: ...T P I for Material Width Inches It is impractical to change the blade to the proper pitch every time a different width of material is cut and it is not necessary but remember that the optimum blade will cut most efficiently Too fine a blade must be fed slower on wide material because the small gullets between the teeth will get packed with chips before they get across and out of the cut Too coarse...

Page 43: ...the Medium Carbon Steel Curve 5 From this intersection point run horizontally left to the vertical axis optimum blade speed axis and find the point marked 200 6 For 8 200mm diameter 1045 Carbon Steel solid bar 200 ft min 60m min is the optimum blade speed NOTE 1 Higher than optimum blade speed will cause rapid blade dulling Lower than optimum blade speeds reduce cutting rates proportionately and d...

Page 44: ... direc tion from O to required value If you go too far go back to O and come back up To set FEED RATE for particular cutting situations use the graph below which represents the relationship between FEED RATE blade speed and blade pitch Example 1 It is known from Step 3 that optimum blade pitch is 2 3 and from Step 4 that blade speed is 200 ft min 60mm min From the Graph on the left the FEED RATE i...

Page 45: ...l Tube SAE 4320 Hardened to 35 RC 325 Bhn Dimensions 6 O D x 4 I D 150mm O D x 100mm I D Step 1 Effective Material Width 4 1 2 75 X 6 114mm 19 x 6 Step 2 Feed Force limit setting for 6 Diameter material Refer to Feed Force Limit Setting in Step 2 Step 3 Optimum blade pitch TPI 3 4 T P I Actual blade pitch on the saw 4 6 T P I Step 4 Optimum blade speed for 4 1 2 effective 225 ft min 70m min materi...

Page 46: ... running and the head is descending This is selectable via the PLC parameters A generous flow of coolant should be applied in order to increase production and blade life The bandsaw is equipped with two independently controlled coolant spouts that are capable of supplying a generous flow of coolant to the blade The left guide arm supplies a flow of coolant that floods the blade as it moves through...

Page 47: ... Head Down Limit This limit is factory set and under ordinary cutting requirements should not be changed If changed it may cause the machine to malfunction in the automatic cycle VARIABLE VISE PRESSURE OPTION This option allows the operator to adjust the vise pressure This can be valuable when cutting light structurals and tubes By reducing the vise pressure from the system 1200 PSI or 8274kPa pre...

Page 48: ... the front and shuttle vises or at a slower clamping speed Either bundling can be turned on or off at any time The on off valves are shown in the photos The speed at which the bundling jaws open and close can be adjusted as required by turning the flow control valve for each bundling cylinder ...

Page 49: ...h is connected to the machine via the Power Junction Box see picture below must be turned OFF and locked in the OFF 0 position by means of a padlock The key for this padlock must be kept by the person performing the work on the machine If more than one person is performing work on the machine then a multiple lock hasp shall be used and each person shall apply his or her own lock to the hasp 4 The ...

Page 50: ...the drive door will clear the electrical control panel 2 Open the front vise about 12 This will provide room between the two guide arms to easily grasp the blade with two hands BUT DO NOT TOUCH THE BLADE UNTIL THE BLADE CHANGE MODE SWITCH IS TURNED TO THE ON POSITION 3 Turn the blade change key switch to the ON position The hydraulics will continue to run but only the blade tension switch is funct...

Page 51: ...he blade change mode key switch to the OFF position The hydraulics will shut down 9 Switch the hydraulics on then start the blade and run for 20 seconds 10 Stop the blade 11 Turn the blade change key switch to the ON position 12 Open the blade wheel doors and inspect the blade tracking plus the position of the blade brush Refer to the manual for tracking adjustments 13 Close the blade wheel doors ...

Page 52: ...ighten bolts A or B turn tension switch to RUN run the blade for a moment and recheck the tracking Idler wheel tracking bolts set screws D A B C H28A DRIVE WHEEL TRACKING Release blade tension before adjusting Loosen ing bolts A and turning in set screws C by equal amounts will move the blade OFF the wheel Loosen ing bolts B and turning in set screws D by equal amounts will move the blade ON to th...

Page 53: ...H28A 120 with the A603 gearbox requires 15 litres 3 96 US gallons of Mobil SHC 634 synthetic oil This oil has an ISO Viscosity Grade of 220 that is optimum for ambient temperatures from 20 40 Deg C 70 104 Deg F If the machine will be operated for prolonged periods at ambient temperatures below 20 Deg C 70 Deg F an oil of ISO Viscosity Grade 150 should be substituted The suggested oil change interv...

Page 54: ...e fit ting is accessible through the spokes of the blade wheel as shown at point G in the accompanying illustration Lubricate once per year with 30 ml 1 fluid once of NLGI Class 2 Lithium base mineral oil grease This quantity represents about 20 to 30 strokes of a typical hand grease gun Vise jaw guides infeed rollers and bundling assemblies also require periodic greas ing G ...

Page 55: ...hat this periodic lubrication be done once a month using any general purpose grease In addition to the grease points shown vise jaw guides infeed rollers and bundling assemblies require greasing Head Linear Guide Blocks x3 Shuttle Vise Grease Nipples x2 Idler Wheel Slider Assembly Grease Nipple Guide Arm Grease Points x4 Shuttle Shaft Bearing Housings x2 ...

Page 56: ...e tank with the new brand It is recommended to change the oil every 3000 hours of operation on once a year Recommended replacement oils Chevron AW Hydraulic Oil 46 ESSO NUTO H46 Mobil Mobil DTE 25 Texaco Rando HD 46 Shell Tellus 46 3 OIL TEMPERATURE Oil temperature is indicated by a thermometer contained in the level gauge Oil temperature dur ing steady operation should stabilize at about 50 55 F ...

Page 57: ...educe 8a No coolant 8a Add coolant 8b Coolant line blocked 8b Blow out coolant line 8c Coolant pump inoperable 8c Check replace if faulty 9a Safety relay is not energized 9a 1 Ensure all Emergency Stop push buttons are released 2 Ensure Door interlock switches are not activated Close Drive Idler doors 9b Motor overload has tripped 9b Depress each of the over load buttons located in the electrical ...

Page 58: ...ed service person 12b If pilot light related to inoperative function does light problem may still be the coil If problem remains it may result from dirt in the valve spool 12b Disassembly of hydraulic valves should be under taken only by qualified service personnel or those knowledgeable with hydraulic components 13a Feed Rate Valve is fully closed pointer is set on 0 or close to 0 in min 13a Turn...

Page 59: ...ounted on the back of the idler wheel or all six spokes of the wheel may be targets to provide blade speed input to the PLC The programmed information includes logic put into the PLC by the manufacturer as well as information programmed into it through the keypad during assembly Information from the plant is referred to as the parameters The parameters are important for the PLC to provide accurate...

Page 60: ...fter performing length calibration procedure described later in this section The PLC uses this value to calculate its length encoder resolution and stroke parameter Note If Calibration Procedure is activated and not completed or activated and a value not entered for ACT LTH this value will reset to 00 000 and the PLC will not be able to count display lengths LTH CONST Length constant Specifies lin...

Page 61: ...anual Mode or the cycle in Auto Mode has been completed Range is from 0 to 180 minutes BLADE CLEAR If set to YES when the AUTO cycle reaches the function of head up the shuttle will retract the material from the blade by 1 8 before the head will move up When the head reaches the up position the next length of material is shuttled into position TRIM CUT If YES selected the machine will perform a fa...

Page 62: ...to be sure all four wires are connected properly 3 Measure the voltage a At the encoder connector Between 0 Volt pin and 24 Volt pin This voltage should be a minimum of 22 to 26 VDC If the voltage is incorrect check the encoder cable continuity If it is ok there is possible PLC problem If the voltage is correct then proceed to the next step b At the encoder connector Between 0 Volt pin and channel...

Page 63: ...ays the same regardless of part length b Cause Kerf Value 3 Linear a Lengths cut are consistent but the error increases as the part length increases The longer the part the greater the error b Cause When the self calibration is executed an incorrect ACT LTH value was entered Diagnosis Check and record the existing parameters Also check for proper blade kerf By making a cut part way into a piece of...

Page 64: ...lus the programmed kerf Check that this measurement is 002 for each length If the overshoot undershoot is very inconsistent it could be related to an incorrect shuttle cushion period This may be caused by DECEL DIST parameter being set to low defective fast or reverse output relays on the PLC or the hydraulic cushion valve located at the hydraulic manifold may be faulty LINEAR INACCURACY not valid...

Page 65: ...to the home position HUP input light must come on for the cycle to continue a HUP input on cycle should continue if not check outputs per step 2 b HUP input not on Check that the head up limit switch is being activated Check the limit switch limit switch wiring 2 Front vise should be closed the shuttle vise should stay open and move back to the programmed length a FVC output should be on and SVO o...

Page 66: ...lying outputs Y10 Y11 Y12 Y13 FU6 is wired to terminal COM4 supplying outputs Y14 Y15 Y16 Y17 FU7 is wired to terminal COM5 supplying outputs Y20 Y21 Y22 Y23 Problem 4 No Display Possible Causes 1 No power to the PLC 2 PLC unit failure 3 Faulty connection of cable between PLC and Interface Diagnosis a Check the power led This light should be on when the PLC is switched on b If the light is on the ...

Page 67: ... status indicators Power On when power exists to the PLC Run On when the PLC is in run mode If not check the run stop switch It should be in the run position Batt V Battery low voltage If this LED is on then replace the PLC battery Prog E Flashing LED indicates a program error Cpu E LED on Solid Indicates a CPU error A Input Terminals B Input Indicating LED s C Input Terminal Identification D Outp...

Page 68: ...7 NOT USED X12 Front Vise Close COM3 Fused 120Vac Supply X13 Front Vise Open Y10 Front Vise Close X14 Head Up Y11 Front Vise Open X15 Head Down Y12 Shuttle Fast X16 Blade Start Y13 2M Contactor X17 Cycle Start COM4 Fused 120Vac Supply X20 Blade Stop Y14 Shuttle Reverse X21 Option Out Of Stock Y15 Shuttle Forward X22 Head Up L S Y16 Head Up X23 NOT USED Y17 Head Down X24 Option Outboard Vise Close ...

Page 69: ...aterial and come fully forward in slow speed to the home position and make a cut After the cut is complete On will change back to Press Enter Measure the length of the cut part Move the cursor down to the ACTUAL LTH and enter the length of the cut part plus the actual kerf value Then exit the parameters by pressing the AUTO MAN key the cycle start button will stop flashing To determine if the enco...

Page 70: ...reasing the LTH CONST value Shorter shuttle travel Shorter parts HEAD HEIGHT CALIBRATION PROCEDURE NOTE Remove the head up limit switch target to prevent damage of the head up limit switch during calibration Head calibration may be achieved in two ways a By inputting ACTUAL HGT actual height parameter or b By inputting HGT CONST height constant parameter To determine Actual HGT value the HGT CLB h...

Page 71: ...ile in calibration mode If the actual height value shows as a negative number the channels must be reversed and the calibration procedure repeated To determine HGH CONST value use this formula ACTUAL FEED RATE Displayed FEED RATE x HGT CONST new HGT CONST 5 Input new HGT CONST press ENTER 6 Press the AUTO MAN key to exit the parameters screen ...

Page 72: ...4 1 ELECTRICAL SCHEMATICS SEE PDF ON ATTACHED CD SECTION 4 ELECTRICAL ...

Page 73: ...5 1 SECTION 5 HYDRAULIC HYDRAULIC SCHEMATICS PLUMBING DIAGRAMS SEE PDF ON ATTACHED CD ...

Page 74: ...6 1 MECHANICAL ASSEMBLY DRAWINGS PARTS LIST SEE PDF ON ATTACHED CD SECTION 6 MECHANICAL ASSEMBLIES ...

Page 75: ...7 1 SECTION 7 OPTIONS OPTIONAL ASSEMBLY DRAWINGS SEE PDF ON ATTACHED CD ...

Page 76: ...rom the screen centre towards the right if the blade is deviating towards the front of the saw cutting into the part and extends from the screen centre towards the left if the blade is deviating towards the rear of the saw cutting into the stock If a warning limit is reached and maintained longer than the preset response time then the beacon light mounted on top of the head will start flashing If ...

Page 77: ...the upper one showing the preset right and left warning limits and the lower scale showing the preset right and left shutdown limits All four limits right and left warning and right and left shutdown are set independently To adjust the limits move the cursor to the desired limit and then use the function keys F1 through F4 to change its value Figure 2 Monitor Limit setting screen Navigation Keys E...

Page 78: ... is initialized Cut in maximum limit in cutting towards infeed range 100 0 This parameter will adjust the shutdown limit if the blade is cutting towards the stock Decreasing this value decreases sensitivity which will result in a larger deviation from nominal straight before the shutdown sequence is initialized MIN This function key will move the selected slider to the far left DEC When this funct...

Page 79: ...ce MACHINE RESPONSE IF MAX LIMIT REACHED If the shutdown sequence has been executed then the machine will behave in one of two ways BLD ST0P HEAD UP AND MACHINE OFF NO YES Stop cutting raise the head and shut down FINISH CUT MACHINE OFF NO YES Finish the cut with present degree of deviation and then shut down SENSOR SETTING range 2000 2000 The number displayed here represents the position of the b...

Page 80: ...de key 2 Type password 79479 3 Press Enter key 4 Enter new time 5 Press Enter key 6 To Exit press Ret F2 function key Relationship between Blade Deflection Display and Actual Cut Deviation The digital display indicates the blade lateral deflection at the point where it passes the blade deflection sensor which is 1 past the idler side guide arm The maximum deviation of the cut surface will actually...

Page 81: ...is adjusted To reset the relation proceed as follows 1 To prevent accidental blade start during adjustment a Use the disconnect switch to isolate the machine b Open the electrical cabinet and turn OFF the manual motor starter labeled 2 O L and lock it in the off position by means of a padlock Fig 9 Figure 9 c Close the electrical cabinet and turn the disconnect switch to ON Cut in maximum limit Cu...

Page 82: ...observe the bottom line of the BLADE MONITOR PARAMETERS screen labeled SENSOR SETTING Adjust the block until the prompt reads SENSOR SET The adjustment is quite sensitive and requires careful movement of the block in small increments The display range limit is from 2000 to 2000 The target setting is 0 but anywhere from 100 to 100 is acceptable and will result in the display prompt SENSOR SET 8 Whe...

Page 83: ...SELECTION 1 Selecting FLOOD or MIST coolant 2 In Auto Mode press NEXT coolant button to move to AUTO MODE 2 3 Use FLOOD MIST button to select different type of coolant 4 Use RETURN button to return to previous screen ...

Page 84: ...2 2337mm Long 120 3048mm High Machine Weight Overall Dimensions 30000 lbs 13608 Kg Maximum Workload 24 000 lbs 10886 Kg H28A 120 BANDSAW SPECIFICATIONS Round Rectangular 28 711mm 3 1 2 U S Gal min 13 5 Liters min Carbide inserts water soluble coolant lubricated Motors Blade Wheel Dia Waist Height 31 787mm or 37 940mm with 6º cant head System Pressure 1200 PSI 8266 kPa 9 5 U S Gallons 36 Liters Vis...

Page 85: ...OSE IT TO OTHERS FOR ANY PURPOSE WHATSOEVER ALL RIGHTS RESERVED A 0 B C D E G F H I J K L M 2 1 4 3 5 8 7 6 2 1 4 3 5 8 7 6 G F E D C B A H I J K L M 0 ECN NUMBER REV DATE BY REVISIONS STANDARD TOLERANCES UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES LINEAR ANGULAR X 015 IN XXX 005 IN XX 010 IN X X 0 5 DEG 125 MICROINCHES THIRD ANGLE PROJECTION TITLE DRWN BY CHKED BY MAT L DATE SCALE SHEET R...

Page 86: ...R LICENSE TO DISCLOSE IT TO OTHERS FOR ANY PURPOSE WHATSOEVER ALL RIGHTS RESERVED A 0 B C D E G F H I J K L M 2 1 4 3 5 8 7 6 2 1 4 3 5 8 7 6 G F E D C B A H I J K L M 0 ECN NUMBER REV DATE BY REVISIONS STANDARD HYDMECH TOLERANCES UNLESS OTHERWISE SPCIFIED DIMENSIONS ARE IN INCHES THIRD ANGLE PROJECTION TITLE DRWN BY CHKED BY MAT L DATE SCALE SHEET REV DRAWING NUMBER WOODSTOCK ONTARIO CANADA N4S 0...

Page 87: ...ture of the H28A 120 but not originally manufactured by Hyd Mech are subject to the original manufacturer s warranty Hyd Mech will provide such assistance and information as is necessary and available to facilitate the user s claim to such other manufacturer Liability or obligation on the part of Hyd Mech for damages whether general special or for negligence and expressly including any incidental ...

Page 88: ...9 2 ...

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