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Solenoid valve troubleshooting

(1)

Solenoid valve Failure

Remove and clean-up solenoid valve.
If cannot successfully removed from the valve body,

Completely remove the adhesion.
Reduce the maximum torque of screw

The surface roughness should be 0.63S minimum,

Set oil pressure to the specified value and control

Check the solenoid valve current, voltage and

Valve has reached the end of life, replace it.
Remove the foreign in the mixed oil.
As possible as can run to reduce the pressure.
Reduce the changes of oil temperature between

As In the low-temperature environment, before

Check the voltage which should be within

Maintain the oil temperature at 70°C, the ambient

Replace the power supply.

Reason

Countermeasure

the body may have adhesion on it.

within 65 ~ 85kg.cm.

flatness should be 0.01mm minimum.

pressure by the throttle valve or others.

resistance, if the electromagnetic contactor is
abnormal, replace it and re-lock the wiring.

solenoid valve and the ambient temperature, so that
reduce the difference of temperature between them.

starting the machine, warm machine up first.

± 10% of the specified voltage.

temperature of rectifier at 50°C or less.

Solenoid valve inside having

Screw over locking, or fixed face

Pressure and flowing too high

Electromagnetic contractor

Valve damage.

pressure too low.

Oil temperature too high causing

Power supply broken.

the valve locked.

without good connection.

foreign or impurities.

inappropriate.

7.4 Troubleshooting for hydraulic circuits

Troubleshooting

Property

Kent

Industrial

USA

Not

Reproduce

Содержание KVTC-120

Страница 1: ...www kentcnc com I 1 800 KENT USA P r o p e r t y o f K e n t I n d u s t r i a l U S A D o N o t R e p r o d u c e...

Страница 2: ...3 2 4 2 5 Applications and Features 2 1 1 Applications 2 1 2 Features KVTC 120 Major components Specification Direction of movement KVTC 120 Machine hazardous locations 1 2 2 1 2 1 1 4 12 19 4 5 5 5...

Страница 3: ...r display Tool change switch 4 3 4 4 4 5 Crossrail operation and maintenance 4 3 1 The crossrail maintenance mode PRS Using steps Crossrail operation Tool retraction function 4 3 2 4 6 Filter with coo...

Страница 4: ...of Lubricator Lubrication system Standard lubrication table Standard lubrication Machinery lubrication for other parts Requirements for daily or periodic maintenance and inspection Maintenance and co...

Страница 5: ...omply with national safety requirements If transport the machine by vehicle the routes and roads should be carefully survey and plan Should not replace or alter any structural or electrical control ci...

Страница 6: ...ommendations 3 4 The spindle and gear lubricants should be selected in accordance with manual recommendations The using of lubricants should be the requirements of operating manual 5 Should be maintai...

Страница 7: ...p Check the tool compensation settings before start operating Confirm the position of the zero return point Confirm the speed increasing button of spindle speed and feed rate on CNC control panel to b...

Страница 8: ...ld stand in a safe place as viewing the checking operation As open the appliance door to perform checking operation there is a high voltage symbol on the electrical box Do not touch the high pressure...

Страница 9: ...u should continue to supply power to the machine CNC when replacing the memory backup battery and perform the emergency stop Because this operation includes power on and opens the electrical box This...

Страница 10: ...electric shock It will take at least 20 minutes to make these disappear after power off When replacing a new unit should determine the new unit has the same parameters and settings as the original one...

Страница 11: ...there is a risk of electric shock Power is off At least more than 20 minutes to make these go away The CNC operation and maintenance existing of different risk it must be performed by a qualified tec...

Страница 12: ...w to select the appropriate coolant and lubricant products Addition to refer to manual information you can negotiate with the local agents to get the relevant from to avoid danger Do not remove the ir...

Страница 13: ...o safely and properly operate this machine If the operator needs taking education and training please contact maker The machine could not be used in possibly explosive environments 2 1 2 Features 1 2...

Страница 14: ...C 1 2 3 4 D NO Model Title Page KENT INDUSTRIAL USA INC 20 1 3 4 8 10 11 7 2 14 16 9 12 6 5 15 13 18 17 19 Major components R121090901F KVTC 120 1 1 2 Machine overall description P r o p e r t y o f K...

Страница 15: ...embly Crossrail Assembly Lift Assembly Saddle Assembly Electrical Box Assembly Controller Assembly Chip Conveyor Assembly Coolant Tank Assembly 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9 Level Adjustment Blocks As...

Страница 16: ...or Total power capacity X Z axis servo motor Live spindle motor mm inch mm inch mm inch mm inch kg lb mm inch mm inch mm inch rpm N m lbs ft rpm mm inch mm inch m min ft min mm inch kW HP KVA unit Tra...

Страница 17: ...inch mm inch l gal kg lb l gal l gal l gal kg lb KVTC 120 12 BT50 25 or 32 1 or 1 25 400 15 7 50 110 100 26 500 132 4 1 8 2 5 500 3 900 5 100 217 150 200 20 100 44 300 450 990 Optional Accessories Tra...

Страница 18: ...A B C 1 2 3 4 D NO Model Title Page KENT INDUSTRIAL USA INC X Z 1 5 MAG Table CCW CW CW CCW Direction of movement R121090901F KVTC 120 1 1 2 Machine overall description P r o p e r t y o f K e n t I...

Страница 19: ...do not put their region to avoid danger 1 2 3 4 A B C D A B C 1 2 3 4 D NO Model Title Page KENT INDUSTRIAL USA INC Adjust the maintenance space Operator position Dangerous zone Machine hazardous loca...

Страница 20: ...900 300 80 250 250 250 150 150 210 450 76 250 250 250 250 250 250 150 150 150 150 150 150 Non shrink grout Stone Rebar mesh for bottom edge Insulation material Rebar mesh for top edge Table Center 1 2...

Страница 21: ...INC Top View 5100 5500 Front View 680 1350 2550 3900 2200 1000 1900 3600 Walking Space required for adjusting the electrical box Operator position Work piece moving route Layout R121090901F KVTC 120...

Страница 22: ...B C 1 2 3 4 D NO Model Title Page KENT INDUSTRIAL USA INC Air compressor Transformer Voltage 220V Voltage 380V Air pressure and power source R121090901F KVTC 120 1 1 3 Installation P r o p e r t y o f...

Страница 23: ...el Title Page KENT INDUSTRIAL USA INC Lifting Point Lifting Point Lifting Point Recommend slings 8500kg 7500kg 500kg 500kg 2000kg Approximate lifting weight R121090901F KVTC 120 1 1 3 Installation Sta...

Страница 24: ...nstalling column Z axis and tool magazine use diameter to measure Z axis as to move Z axis up and down make sure Z axis is vertical to the table If Z axis is not If Z axis is not vertical to the table...

Страница 25: ...e on the 9 sets of level adjusting block by 9 bolt nut of 3 4 10UNC Adjust the machine level roughly by level meter As 3 4 level adjustment 3 Base 3 4 10UNC Level adjusting blocks Foundation bolt Leve...

Страница 26: ...the correct position of adjusting blocks block and column Note the number on column adjusting block which is the distance between adjusting 7 Base Column M30 Screw Column adjusting Column adjusting B...

Страница 27: ...of tool magazine Then use M6 screws to force tight the fork block which is fixed on the adjustable block of fork block 13 Use M16 screws to fix the adjustable block on the back of tool magazine then a...

Страница 28: ...e M8 screws to fix lower stair to the base Paper filter frame with M6 screws on the back of the coolant tank 15 Put the paper filter the paper filter frame Tool magazine Paper filter Paper filter fram...

Страница 29: ...ned Set the X axis origin is equal to the change point of tool 23 24 Assemble all metal sheets on wooden board Connect the ground wire after finishing the installation to avoid leakage caused 25 21 Co...

Страница 30: ...0 EMERGENCY STOP X Z C X L1 L2 H G L G EDIT ZRN HANDLE JOG RAPID X Z X Z STOP CW CCW ORCM JOG CW STOP UNCLAMP LIGHT G H L FORWD APO BACK PRS DRN SBK O T BDT M01 AIRBLOW ON MAIN EDIT PROTECT 70 130 130...

Страница 31: ...le Page KENT INDUSTRIAL USA INC OFF X Z C E B Y 100 10 1 Tool Fixing Loosening Tool Fixing Loosening indication key Emergency stop MPG R121090901F KVTC 120 2 2 4 Operating P r o p e r t y o f K e n t...

Страница 32: ...th rapid feed rate switch to change the speed ratio As zero returned the panel lights will be lighting Jog mode Switch the selector to jog mode can make each shaft moving depends on cutting feed speed...

Страница 33: ...e 10 increase or decrease In JOG mode adjust the band switch Figure 4 4 to select the speed DRN of jog run or auto run The speed scope from 0 to 3000 mm min 1 Rapid feed rate switch It s active in RAP...

Страница 34: ...n speed of the selected speed MANUAL MODEL Start table JOG Then press the spindle CW or spindle 3 CCW button then adjust the spindle speed manual selection button Figure 4 6 before we can make table j...

Страница 35: ...the spindle worktable will be performed positioning action after rotating twice in 9 The jog key of spindle worktable As this function key is ON the spindle worktable rotated by jog mode Spindle spee...

Страница 36: ...physical Pieces if it is placed on the tool holder on the tool fixed place during operation Tool for fixed relaxed indeed real confirm security personnel and mechanical position before taking this job...

Страница 37: ...f this key is on OFF the single block with mark will be 5 CF axis start C ON It is active in the ZRN mode AS the key C ON is ON can move the C axis by hand wheel 6 or C and C keys on panel This light...

Страница 38: ...out and performed External control function keys ON the speed of spindle worktable switches to high speed gear Working light switch it is active for all modes As this function key is ON in any modes w...

Страница 39: ...oid damage Before turn chip conveyor on make sure staff and mechanical safety to avoid damage BACK FORWD The automatic power off key It is active in reading the M30 function code at the end of the pro...

Страница 40: ...personnel on safe position away from machine before The tool magazine reverse key As press this key the magazine is rotating in 5 the negative direction in this case the door of tool magazine should b...

Страница 41: ...safe position away from machine before The push out key of left positioning pin of beam Used in the maintenance mode let the left side of the positioning pin of beam push out moving the cross rail in...

Страница 42: ...eed rate Refer to 4 2 2 4 2 3 C axis forward movement C It is active in RAPID mode JOG mode and C axis start C ON mode As the key is ON the C axis is forward rotating The rotating speed controlled by...

Страница 43: ...ail 4 2 11 Tool number display Tool change switch this feature is optional The two digit display Figure 4 21 on the right side of the existing tool number 1 for the tool axis The two digit display on...

Страница 44: ...anical action When the switch turn left to MAIN EDIT can edit data turn right to PROTECT can protect data 4 2 13 Cycle start key Figure 4 26 It s active in AUTO model MDI model 1 as this function key...

Страница 45: ...rgent button buttons Then press RESET This machine has 4 emergency stop buttons Figure 4 28 These 4 emergency stop To release the emergency stop signal firstly release all the emergency stop buttons a...

Страница 46: ...indicator will display the current location when the crossrail move 4 3 2 The crossrail maintenance mode 1 When crossrail moving sudden crossrail stop in any position or crossrail move motor fault mus...

Страница 47: ...hand touch from lower of No 1 to upper of No 5 when press down each number of switch should check the display number of crossrail position on display is correct or not Regarding the Keep relay settin...

Страница 48: ...re that there are not any personnel and tools on the work table then able to perform the following steps 2 3 5 Release function 6 Press CYCLE START key 7 Return to machining position 8 RESET PRS PRS W...

Страница 49: ...s opened 1 2 Then press CW or CCW Press one time is start and press two times is stop Then it can control CW or CCW If want to move the X or Z axis should close Keep relay 3 0 K3 0 0 first then perfor...

Страница 50: ...maintenance mode and to out the left and 20 pcs of M12 screws 3 Loosen M12 socket set screws each 2 pcs on the top and down of the left of column If any screw is covered lifting the crossrail to loos...

Страница 51: ...n direction is left high and right Every time you fasten just adjust a little bit unless the deviation is huge If not then process 3 and 4 until X axis is parallel to work table After adjustment lock...

Страница 52: ...is 10 M20 screws Z axis deviation direction 1 Identify Z axis and faceplate centers have been alignment if not record the Table Figure 5 4 Figure 5 5 Deviate from right to left Deviate from left to ri...

Страница 53: ...igure 5 6 When the Z axis deviates from left to right loosen this site of screws and then tighten the opposite of screws Adjust it until the Z axis perpendicular to the center of the worktable When th...

Страница 54: ...d Z axis 2 After confirm the deviation direction release the column 12 M30 screws deviation direction is forward or backward as Figure 5 7 Table Column Backward Forward Have deviation Figure 5 7 Figur...

Страница 55: ...on direction to Note When release or tight up the screw they should do it simultaneous to avoid the column deviation Z axis positioning adjustment Figure 5 9 If the Z axis needs to be moved backwards...

Страница 56: ...eter option then change the parameter Find the 11 0 Set the operation panel as JOG mode push to adjust the tool disk for the original point adjustment When tool disk rotates too fast or slow you may u...

Страница 57: ...he pocket no 1 to tool change location and set No 11 0 as 0 then turn off power 11 Turn on power then set No 11 0 as 1 This coordinate is original point of 12 pocket no 1 Finish all the setting and re...

Страница 58: ...now magazine center is off in which direction as Figure 5 11 backward or forward 2 Confirm the deviation direction then release the 4 M20 screws under the magazine as Figure 5 12 Figure 5 12 Figure 5...

Страница 59: ...ion tight the 4 M20 screws right under the magazine as Figure 5 12 Figure 5 13 5 Adjustment If the magazine need to move forward then tight up these 2 screws till the magazine to its right position If...

Страница 60: ...screws adjust the switch position back and forth till the sensing switch got the signal Note When adjust the sensing switch position should pay attention the tooling will collide to the switch or not...

Страница 61: ...the back and forward of carousel should be 2 parallel to X axis Please see below photo PMC axis or PMM axis 3 Must complete X Z zero point setting first then process tool magazine zero point setting F...

Страница 62: ...n it on Should double check parameter 1241 the coordinate of changing tool case to bump machine 8 7 Do the zero point setting again repeat step 3 This setting is pocket 6 pocket no 1 position Turn poc...

Страница 63: ...lity of Z axis is correct If the error if too large please 2 adjust it 3 PMC TYPE Check if X Z axis position has been memorized P1815 4 Turn the carousel to pocket no 1 5 Adjust back forward and angle...

Страница 64: ...ht off position Clamp tool on the spindle Move X and Z axis into ATC 11 Use manual mode to move the tool into pocket 12 Unclamp tool then clamp tool again 13 If carousel has obviously shaking adjust X...

Страница 65: ...s negatively 400mm This machinery coordinate is X axis 18 tool changing point Compare it with parameter P1241 X axis then modify error Figure 5 22 Figure 5 23 5 Adjustment P r o p e r t y o f K e n t...

Страница 66: ...zero point setting 0011 0 setting 0 1 NC power off 2 NC power on again 3 Message is 224 alarm display 4 Figure 5 24 Figure 5 25 5 Adjustment P r o p e r t y o f K e n t I n d u s t r i a l U S A D o...

Страница 67: ...al key 5 Push MAG C W key 6 Move NO 1 position 8 Setting 0011 0 to 1 9 MG change display number 7 Power off and power on 10 Figure 5 26 5 Adjustment Figure 5 27 P r o p e r t y o f K e n t I n d u s t...

Страница 68: ...et different hydraulic pressure from the solenoid valve and change the hydraulic pressure by the knob Under normal operating conditions the hydraulic pressure of each driving unit showed in Table L 5...

Страница 69: ...ng bolt Spindle low gear setting bolt Total pressure gauge Oil level meter 100L 58 62 kg cm 28 32 kg cm Spindle high low grade pressure gauge A P B 1 10 12 7 5 9 6 11 13 4 3 2 Spindle buffer setting b...

Страница 70: ...n of the pipeline will increase and result in the loss of b Use a hex wrench into the hexagonal hole wrench clockwise and watched the total pressure gauge 5 12 As this has been done can see the pressu...

Страница 71: ...must be possible to remove in In order to obtain precise positioning of valve it needs to remove the air compression If the air remains in the oil it will make noise and vibration as the hydraulic oil...

Страница 72: ...to air inlet and set pressure as 6kgf cm NO 1 3 5 7 Main parts location and name of air pressure unit air pressure Inlet NO 2 4 6 Parts name Status Parts name 6kgf cm L5 3 Status Pressure regulating v...

Страница 73: ...Based on the center of table move X axis left and right to the center 3 Please see below photo Figure 5 30 Set 01815 X APC to 1 then reboot 4 Set 01815 X APZ to 1 then reboot 5 Figure 5 31 0 0 0 0 0...

Страница 74: ...axis downward 5 mm 2 Set this point as a zero point 3 Set 01815 Z APC to 1 then reboot 4 Set 01815 Z APZ to 1 then reboot 5 Figure 5 32 Figure 5 33 O T 0 0 0 0 0 0 1 1 0 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0...

Страница 75: ...is clamped tightly and will not fly out causing injury or damage As select tool by hands the door should be opened and switch selector in manual Precautions before operating the machine Make sure the...

Страница 76: ...int of X axis and Z axis before running Correctly set the reference position of the work piece Enter the correct tool Compensation value After cutting test if necessary measure the work piece and upda...

Страница 77: ...t Listen to the machine sound while machine runs As abnormal noise comes out from machine or temperature too high should find out the abnormal source immediately Should clean the surrounding of machin...

Страница 78: ...nce of electrical box When the oil in fuel tank causes inferior status such as showing white or odor produced shall replace the oil immediately If there is deterioration of hydraulic oil should be rep...

Страница 79: ...NDUSTRIAL USA INC 6 2 3 Location of Filter This machine has 4 Filter Should check and clean every half a year MF 06 CF 06 TK 610 Location of Filter R121090901F KVTC 120 1 1 6 Maintenance P r o p e r t...

Страница 80: ...pends Power Filling monthly Cycle Hydraulic Unit Lubrication of 5 steps Depends Cycle Lifting Reducer Oil Immersed everyday 12 months Cutting Oil 12 months 6 months everyday Power Filling Lubrication...

Страница 81: ...oil injectors are always based on the fixing time oil quantity pressure and fist supply Hydraulic oil capacity is too low will light up Lubricant start up oiling time TMR NO 16 set 2000 for the boot i...

Страница 82: ...ng or not Switch pressure value form maximum 2 kg cm to minimum 0 kg cm and check the pressure value Check the pump could open and close by manual heck the reducing rate of lubricants according the ma...

Страница 83: ...scosity lubricant Clean up oil tank replace oil Release the inhaled air check the oil Repair or replace the wearing parts Modify the transfer rate If necessary Re fixed lock or replacement Check the p...

Страница 84: ...ion Use plastic hose connected to one end of the cooling nozzle the other end into the bucket Start the manually supply of supply of cooling fluid coolant drained from the coolant tank As the outflow...

Страница 85: ...side operating area immediately Every three months or necessary clean the used filter of oil tank water tank and the electric cooling fan If oil or coolant is not clean can lead to oil or coolant unab...

Страница 86: ...quality of the initial injection of cooling water For example the water contains high hardness materials such as calcium and magnesium ions to mix oil will reduce both of abilities in emulsion and ru...

Страница 87: ...pressure of Z axis is insufficient check the oil pressure gauge and adjust the pressure to the standard value Collision of Z axis Remove the locks of accessories on Z axis such as tool and tool block...

Страница 88: ...icient amount Cannot adjust the hydraulic pressure unit As hydraulic motors are unable to run regardless of overload or not If the pump or motor is failure should repair or replace it Check the runnin...

Страница 89: ...ply Reason Countermeasure the body may have adhesion on it within 65 85kg cm flatness should be 0 01mm minimum pressure by the throttle valve or others resistance if the electromagnetic contactor is a...

Страница 90: ...impurities Bad oil quality Life time is over Replace Check the fixed gaps the surface roughness should be 6 3S or more flatness should be 0 01mm or more Replace Use recommended oil only Replace Insta...

Страница 91: ...heck the pump valves and piping If any damage or wear repair or replace them Check the support and piping systems In any case of loose retightens Adjust the pressure setting carefully Remove the detec...

Страница 92: ...iameter of two connected pipe Use the similar diameter of pipes to connect Exclude pipe bending as possible as you can Check the hydraulic circuit Open and check Replace it if necessary clean it repla...

Страница 93: ...terial inappropriate difference of pipe diameter is too large Remove and clean If failure replace it Replace larger pipe or valve Check replace it if necessary Foreign body blocked cause oil pressure...

Страница 94: ...t more than normal processing conditions may lead to overheating of the work piece and the tip will be bending Changes the operating conditions or use the cutting fluid Cannot get correct accuracy aft...

Страница 95: ...2 A1 3 TABLE GEAR MOTOR PRESSURE AL Check pressure switch and circuit X8 5 Check hydraulic oil level switch and circuit X8 6 Check pressure switch and circuit X8 2 Check pressure switch signal and cir...

Страница 96: ...IN MODE TOOL CLAMP ERROR Check photoelectric switch and circuit X8 0 X8 1 Check photoelectric switch and circuit X8 0 X8 1 Spindle exchange H L gear must stop M5 Spindle must be stop then it can be op...

Страница 97: ...5 AL 1025 A3 1 Z AXIS MUST FIRST ZRN Z axis must be back to zero position Check motor overload switch and circuit X3 5 Check if there are duplicate tooling in the magazine pocket X2 5 TURRET MAINTAIN...

Страница 98: ...and low gears Cs AXIS MUST START need in Cs mode execute Reset the position of carouse Reset the position of carousel STEPWISE MOVE ERROR Check motor overload switch and circuit X1 0 AL 1044 AL 1045...

Страница 99: ...witch and circuit X2 2 please execute M86 SPINDLE2 BRAKE PIN ERROR AL 1051 A6 3 Zf BOX OIL PRESSURE LOW AL 1052 AL 1053 A6 4 A6 5 Check sensor and circuit X4 5 X6 0_Y5 5 Y5 7 AL 1054 A6 6 AL 1055 A6 7...

Страница 100: ...r manual mode CROSSRAIL LUBE PRESSURE LOW Check pressure switch and circuit X9 6 AL 2015 AL 2016 A21 7 A22 0 CROSSRAIL LUBE LEVEL LOW Check oil level level switch and circuit X9 7 MAG DOOR LIMIT SWITH...

Страница 101: ...R ADAR 100 All rights reserved KENT INDUSTRIAL USA INC copyright RD 2020 2022 Service information 7 Troubleshooting P r o p e r t y o f K e n t I n d u s t r i a l U S A D o N o t R e p r o d u c e...

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