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Section

Page

Service Training

6.1.8

Electrohydraulic brake Y1

This brake is an electromagnetic brake with no current with hydraulic assistance.

The electrohydraulic brake is used as parking brake and also for emergency braking.

The hydraulic piston helps increase the brake torque according to the load on the fork arm, the hydraulic

pressure in the lifting jacks activate the piston and increase the braking.

The brake release is done by the action of the accelerator, to enable start-up on side without the truck

moving. The brake is reapplied

the accelerator is released

and

if the truck speed is zero.

The air gap setting must be between 0.2 mm and 0.6 mm.

ELECTROMAGNETIC BRAKE

Connector 7X6

Terminal Colour

Function

Po24V of Y1

Negative -Ub of Y1

Gap setting screw

(three)

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Содержание T20 AP

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Страница 11: ...Service Training Section 1 Page 1 1 TRACTIONMOTOR https www besttruckmanuals com...

Страница 12: ...e motor unit support Electrohydraulic brake mounted directly on the motor shaft Motor without maintenance controlled by 1 speed sensor 1B2 1 temperature probe 1B6 1 2 TECHNICAL DATA Asynchronous motor...

Страница 13: ...Flange 2 Circlips 30 x 1 5 FST DIN 471 3 Key 8 x7 x 20 DIN 6825 4 Circlips 25 x 1 2 FST DIN 471 5 Ball bearing 6006 2 RS1 C3GJN DIN625 6 Circlips 55 x 2 FST DIN 472 7 Crown wheel for measuring the spe...

Страница 14: ...nnector 1X25 1B6 3 Speedsensorconnector 1X2 1B2 4 Screw CHC M6 X 20 quantity 8 Tighteningtorque9 5Nm 5 O ring 6 Electrohydraulicbrake 7 Brake mounting bolt quantity 3 Tighteningtorque9 5Nm 8 Reduction...

Страница 15: ...s recommended to wear gloves Installing the traction motor To install the traction motor proceed in the reverse order as for removal Replace the O ring 5 and grease it before refitting the motor 1 in...

Страница 16: ...Service Training Section 1 P ge 6 https www besttruckmanuals com...

Страница 17: ...Service Training Section 2 Page 1 2 DRIVE TRANSMISSION https www besttruckmanuals com...

Страница 18: ...ar motor 7 which positions the turntable Motor wheel 6 powered by a single stage reduction gear 5 and a conical ring gear Asynchronous 3 kw traction motor 1 mounted vertically on the reduction gear 5...

Страница 19: ...the end of the motor spindle Fasten 1 sling 11 and stretch it slightly with the hoist Unscrew the 4 fixing screws 9 of the motor chassis support unit Extract the entire drive unit carefully from the b...

Страница 20: ...T20 T24 Loadonthe drive wheel 1 5 T maxi Numberofteeth slewring 108 Speed reducing ratio 19 67 Oil volume 1 5 litres Maximum torque at the wheel static 1 375 Nm Maximum torque at the wheel dynamic 916...

Страница 21: ...nggear 17 Drainplug 18 Drain plug joint 19 Trolleywithtaperedrollers 20 Cover 21 Wheel shaft 22 Trolleywithtaperedrollers 23 Spacer 60 7 5 24 Shim 25 Seal ring mounted with loctite 574 26 Wheel bolt t...

Страница 22: ...Tighteningtorque9 5Nm 6 ScrewsChcM10X30 quantity 8 Tighteningtorque64Nm 7 ScrewsChcM10X35 quantity 4 Tighteningtorque64Nm 8 Driveunit supportplate 9 Shim forrubberornon brandedrubberdrivewheel 10 Scr...

Страница 23: ...on motor and the reduction gear are heavy Use handling gloves to disengage the motor and the reduction gear from the chassis To reinstall the reduction gear proceed in the reverse order as for removal...

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Страница 55: ...Section 6 Page 1 Service Training 6 ELECTRICALEQUIPMENT https www besttruckmanuals com...

Страница 56: ...Service Training Section 6 Page 2 https www besttruckmanuals com...

Страница 57: ...d rail 6Km h Speedreduced onturning 6Km h Speed reduced anti crush 1S3 activated 4Km h Speed reduced battery unlocked 2Km h Speed reduced stabiliser oil level too low 2Km h 6 1 1 2 Tiller rear safety...

Страница 58: ...Service Training Section 6 Page 4 6 1 2 Electric plate https www besttruckmanuals com...

Страница 59: ...Traction and hydraulic controller LAC 1A1 13 Key switch S1 14 Emergency stop button 7S1 7S5 15 Power fuse LES 3F1 16 Power fuse LAC 1F1 17 Control fuse 1F3 Inclinometer support A1 connector 1X3 tille...

Страница 60: ...controlling when each of the six MOSFETS is activated or deactivated it is possible to control in one direction then in the other the current in each of the three motor windings phases MOTORWINDING P...

Страница 61: ...tionmotorwill seean AC frequencyof180Hz at themaximumspeed while the MOSFETS will be switched at ON and OFF status at 8 KHz MOTORRUNNINGAT SEMI SPEED A SINGLEPHASESHOWEDFOR REASONSOF CLARITY MOTORRUNN...

Страница 62: ...yappliedis low the average ACvoltage applied to themotorwindingsis alsolow On pressing the accelerator initially the voltage and the AC motor frequency will be low Gradually as the truck speed grows t...

Страница 63: ...ng is 100 A 2 The nominal power of the battery main fuse 1F1 is 225 A 3 1F3 7 5A Key switch traction hydraulic and steering control circuits NOTE Although this control fuse might be interchangeable wi...

Страница 64: ...r and control parts ThenumericcontrolmoduleLTCusestwomicroprocessors TractionandHydraulic thatareauto controlled Ifafault occurs itisdetectedinstantlyand thecontrol systemputsthetruckinsafety whichcan...

Страница 65: ...nternaltransistor 29 BK 29 Traction Traction speed reduction no 1 Connected to the battery negative 0V 30 BK 30 Traction Seat Connected to the battery negative 0V 31 WH 31 Traction Platform Connected...

Страница 66: ...n and hydraulic are supplied in 5V by a second regulator The two controllers start and launch the LAC internal test program If there is no serious internal fault at the LAC the start up conditions are...

Страница 67: ...ng MECHANICAL LINK SUPPLY AFTER THE KEY AND 7S5 Connector 7X9 Terminal Colour Function 1 BN Microswitch input 7S5 2 GY Microswitch output 7S5 EMERGENCY STOP 7S1 7S5 Safety relay 24V 24V Power Auxiliar...

Страница 68: ...1 means that the input is linked to the battery negative Value 0 means that the input is disconnected A means that the value can be 1 or 0 Reaction of the truck when you go from one status from 1 to...

Страница 69: ...ncy it is enough to press the tiller downwards in horizontal position The microswitch 1S4A opens and disconnects the terminal 1X1 7 The tiller base microswitches are replaced by a wire to the connecto...

Страница 70: ...se 16 BN Tiller base signal output negative 6 1 7 Control module tiller in version AP Handlebar in version SP A1 6 1 7 1 Description The control unit is identical to the old range of trucks and is com...

Страница 71: ...ARD Potentiometer 1B1 Horn 4 S 1 Lower 2 S 7 Raise 2 S 6 Safety 1 S 3 Rear switch 1 S 22 Circuit A1 Connector 16 channels 1X5 LBS C screws 2 9x6 5 DIN7981 Front switch 1 S 21 Green wire Red wire Yello...

Страница 72: ...mum speed 2 to 0 98 to 100 Power supply harness breaks outside range 6 1 7 3 Tiller rear safety control 1S3 The anti crash is available in the AP version This safety works when the truck is in walkie...

Страница 73: ...fork arm the hydraulic pressure in the lifting jacks activate the piston and increase the braking The brake release is done by the action of the accelerator to enable start up on side without the tru...

Страница 74: ...to the controller LES where they are processed to determine the speed and the direction of rotation of the traction motor No regulation is provided for the speed sensor CAUTION If the sensor is not m...

Страница 75: ...nces when it is too high If the motor temperature exceeds 160 C the truck speed is reduced to 2Km h If the temperature probe is defective or if the harness is disconnected the LAC controller will redu...

Страница 76: ...en the truck takes a curve the external stabiliser spring crashes at the turn and the truck bends This tilt is detected by an inclinometer the LAC controls the closing of the valve that blocks the sta...

Страница 77: ...n negative by the Mosfet transistors When the valves are not fed the stabilisers are free When a valve is fed the corresponding stabiliser is blocked Connector 2X20 Terminal Colour Function 1 RD 73 Po...

Страница 78: ...if it is changed or if the LAC is changed No mechanical regulation is possible A 50 value corresponds to a horizontal truck The stabiliser blocking and unblocking thresholds can be controlled with th...

Страница 79: ...ng the battery If the truck supply is cut off the valve 2Y7 closed without supply will block the stabilisers 2 If the side output function of the battery is not mounted 2Y7 is replaced by a stopper 1S...

Страница 80: ...LAC traction and hydraulic controller The L A C controls the fans when the internal temperature of the power stage exceeds 50 C and stops them when the temperature drops below 40 C Connector 9X11 Ter...

Страница 81: ...The horn circuit is supplied directly from the emergency stop contact The push button 4S1 is above the control panel Pressing 4S1 applies a voltage 24V to the horn 4H1 HORN Connector 1X3 Terminal Colo...

Страница 82: ...ed with the diagnostics software In the truck standard configuration these speed limitations are deactivated by the controller when the terminals 1X1 29 57 are permanently connected to the battery neg...

Страница 83: ...surges and extends the life of the motor Note Putting the traction in safety stops the hydraulic function MOTOR PUMP UNIT 6 2 2 Operating the lowering of the truck initial lift 2Y2 The lowering functi...

Страница 84: ...The lift is controlled via 2S6 The fork arms climb Arrives in high position The sensor 1B4 is activated The lift is stopped via 1B4 The lowering function is engaged controlling 2Y2 The fork arms lower...

Страница 85: ...position of the set value potentiometer and the position of the wheel potentiometer The motor stops turning when this difference is zero with a certain tolerance range to prevent permanent steering c...

Страница 86: ...d a safety CS and a power stage with 4 Mosfet transistors The transistors are controlled by an electronic circuit called DRIVER optocoupled for galvanic insulation located in the power stage If a faul...

Страница 87: ...value 13 BU 313 Current signal value track 1 Variable signal between 0V 8 2V 14 WH 314 Speed sensor track B Variable signal 0V 6V 16 WH 316 CAN 1 high steering Connected to the bus CAN 1 high steering...

Страница 88: ...nsistor in output 3X1 9 Ub for the line contactor 3K1 The steering contactor 3K1 and the wheel brake system coil F V 7A5 are then fed The power stage is controlled motor at stop outputs M1 and M2 12V...

Страница 89: ...LINE CONTACTOR 3K1 AND TRACTION AUTHORISATION 3K1 Characteristics of the line contactor coil Resistance 20 C 44 Ohms Coil interference Diode No series resistance LES LAC Safety relay B 24V 0V Safety r...

Страница 90: ...exceeds a steering angle AC hAC on either side of the midpoint of the steering The speed limitation is suppressed when the set value returns to a position less than or equal to the angle AC Beyond 45...

Страница 91: ...with propellant controlled by a coil This coil is supplied by a current between 5mA for an almostnegativetorque and750mA forthe maximumtorque The current generated by the LES steering varies accordin...

Страница 92: ...obtain redundancy for safety reasons The steering permanently controls the status of each potentiometer by the total of the values of link voltages no 1 no 2 this total must correspond to the supply...

Страница 93: ...Section 6 Page 39 Service Training 4 1V 4 1V 8 2V LES https www besttruckmanuals com...

Страница 94: ...ecessary This power reset information comes from either a movement of the set value potentiometer variation of the two links in inputs 3X1 3 4 or detection of a truck traction movement by the speed se...

Страница 95: ...harge indicator with low level alarm and lifting cut off Important Full load 100 displayed Discharged 0 displayed corresponds to the limit of 80 of battery discharge recharge mandatory Date time Truck...

Страница 96: ...trol button 5 Control button 6 Control button 7 Marking of active buttons 8 Display of date 9 Display of time 10 Alarm STOP red 11 Alarm BATTERY red Description Meaning Remarks Screen messages Recharg...

Страница 97: ...l overheating Flashing presence non activated fixed lasting 10 s truck operator present Flashing service required in fixed service required Truck operating hours Position of steering wheel Truck stop...

Страница 98: ...Service Training Section 6 Page 44 6 4 2 Alarms and linking of multifunction indicator screens x1 https www besttruckmanuals com...

Страница 99: ...ingparameters accordingtothecharacteristics of the battery mounted on the truck The default parameters on leaving the factory are Truck delivery country logo The delivery country language Enabled at 5...

Страница 100: ...ory The multifunction indicator is programmable by using the Linde parameterisation software Truck doctor version V1 1 P7 or later Battery disconnected and contact cut off Connecting the PC wire to th...

Страница 101: ...ck Doctor A Z Accessories End U X 6 4 6 Selection of multifunction indicator menus in TRUCK DOCTOR 2 3 1 Programming initialisation Service option Display option Battery parameters Accessories Edit pa...

Страница 102: ...ivation By the hour meter By the date The service alarm can be triggered few days or few hours before the service visit In the screen enter the number of hours or the number of days before activating...

Страница 103: ...s are stored in the multifunction indicator memory 1 Battery model Lead acid standard battery Varta Fulmen Oldham Fenwick Standard control for lead acid battery 2 Battery model Battery PZs Deta Settin...

Страница 104: ...25 to 30 Remarks Minimum gravity battery 80 discharged 1 14 Maximum gravity battery 100 charged 1 29 to 1 32 according to models 4 RESET TIME After cutting the discharge indicator it can be reset onl...

Страница 105: ...es on the next visit Menu 5 7 Reset Do not use Menu 6 Printing the multifunction indicator setting parameters The setting parameters are displayed on the screen and can be saved in a file Menu 7 Setti...

Страница 106: ...ected to a single connector 6X7 located in front of the truck after the key switch This diagnostics connector offers an interface with the CAN bus and enables diagnosing all the modules Truck CANBOX c...

Страница 107: ...AN LOW and two resistances of 120 Ohms mounted in parallel and located in the LAC start of CAN network and in the display end of CAN network The ohmic value measurable on the diagnostics connector is...

Страница 108: ...re the warning codes They are stored they do not pertain to faults that can be repaired but that need truck servicing example electrobrake air gap setting The codes between 200 and 499 are the error c...

Страница 109: ...l truck blocked 20 Belly function activated by platform tiller and belly switches In trucks without platform Belly function activated by tiller and belly switches 21 Belly function active reset not ye...

Страница 110: ...ationtorquewhenrequired 231 2 Platform is enabled but this truck has no Platform 232 2 Creep Speed Buttons are enabled but this truck has no Creep Speed Buttons 233 3 Input Masthigh1 is enabled but th...

Страница 111: ...voltage on phase V does not fit to voltage set by vector controller not active in 1 347 Measured voltage on phase W does not fit to voltage set by vector controller not active in 1 400 Monitoringoffu...

Страница 112: ...edorshortcircuit to 24V 228 ContactorremainsOFFwhereasitiscommandedtoswitchON Reasonsmaybe contactoxidizedordamaged 229 FET of contactor is closed while opening is ordered 230 FET of contactor is open...

Страница 113: ...emand 224 Safetyrelay open but should be closed 225 ext Safetyrelay closed without demand 226 ext Safetyrelay open but should be closed 227 Contactor closed withoutdemand 228 Contactor open but should...

Страница 114: ...1 5 from 8 3V 284 Ratiometric actpoti 1 to 2 voltage high 105 from 8 3V 285 Ratiometric actpoti 1 to 2 voltage low 95 from 8 3V 290 Error by Safety Controller AD setpoti 1 uC1 uC2 difference 291 Error...

Страница 115: ...Service Training Section 6 Page 61 6 7 ELECTRICAL DIAGRAMS https www besttruckmanuals com...

Страница 116: ...rs 66 4S1 Horn 44 7S5 Microswitch to open control circuit controlled mechanically by 7S1 52 Code Colour Code Colour BK Black GN Green WH White VT Violet BU Blue RD Red OG Orange YE Yellow BN Brown GY...

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