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Summary of Contents for Mondolfo Ferro MT 2450
- Page 1 Technical service manual MT 2450 Code 4-131046_uk - 12/2013...
- Page 2 diritti di traduzione, di memorizzazione elettronica, di riproduzione e di adattamento totale o parziale con qual- Italiano siasi mezzo (compresi microfilm e copie fotostatiche) sono riservati. Le informazioni contenute in questo manuale sono soggette a variazioni senza preavviso. ll rights reserved. No part of this publication may be translated, stored in an electronic retrieval system, English reproduced, or partially or totally adapted by any means (in-...
- Page 3 INDEX ELECTRICAL HOOK-UP................. 4 SERVICE PROGRAMS ..................4 POWER SUPPLY BOARD SWITCH AND PEAC COMMAND SETUP ..8 E2PROM (t4) MEMORY ZERO-SETTING PROGRAMME ......8 UPDATING THE CONTROL UNIT OF THE MBE BOARD ......9 DOWNLOADING THE SOFTWARE AND FIRMWARE FROM THE INTERNET FOR CARD UPDATING ...............
- Page 4 ELECTRICAL HOOK-UP The balancing machine operates on single-phase power and is supplied preset for the specified power supply (115 VAC or 230 VAC). WARNING The power supply cannot be modified because the motor is specifically designed for the mains voltage and frequency specified on purchase. SERVICE PROGRAMS These programs are designed to make available a number of data allowing the effi- ciency of various parts of the machine to be checked quickly and easily.
- Page 5 - the message ON or OFF on the right-hand display; The automatic position search function can be set ON or OFF by pressing the “Enter” key. To exit from the program (and the Service environment) press the “F” key. 91 Thresholds and rounding-offs Remove/restore: - the visualisation of the first gram of unbalance;...
- Page 6 The program is used to: check the release of the program installed on a machine to allow updates to be carried out if necessary without having to remove the circuit board from the machine to read the eprom label. 94 Standard imbalance values display Selecting this program displays the imbalance values for the last wheel spin per- formed, calculated with reference to the standard calibration coefficients (the ones used by the machine when the circuit board has never been calibrated or if the cali-...
- Page 7 - A series of wheel spins can be carried out without exiting from the program. - To exit from the program (and the Service environment) press the “F” key. The program is used to: - check that the values displayed are within the permitted ranges, as follows: •...
- Page 8 checks as described in the “internal sensor” chapter. - You can exit the programme (and the service environment) by pressing the “F” key. The programme is used to check the efficiency of the sensors used for automatic data input. Moving the sensor, the values displayed must vary continuously within the following intervals: diameter sensor ..
- Page 9 Perform the t4 test again in the case of an error. If the outcome is still negative, replace the MBE161 card. - Turn off the machine and return the dipswitch to its original position (all switches are OFF). Fig.1 UPDATING THE CONTROL UNIT OF THE MBE BOARD These cards are used with wheel balancers with gear transmissions or with a rubber wheel.
- Page 10 - Select “Private area” - Enter your username, password and select “Enter” - Select “Software Updates” in the new screen. - In the “Keyword” field, enter the keyword that corresponds to what you want to download. For example: - If you want to download the programming software (SAB16X or SAB32F) for the update via PC enter “SAB”.
- Page 11 have a RS232 port use the USB/RS232 adapter code 8-21100226. - Turn the wheel balancer on. - Open the previously downloaded file with the .”bin” extension of the firmware version to be updated. The control window for the SAB16X programme will open automatically.
- Page 12 INTERNAL SENSOR Select Function 98 to display the sensor signals Diameter sensor [di] Fig.2a Check that the machine reads the number of notches indicated below in the following positions: Position 1 with lever fully forwards, 0 notches Position 2 with lever fully backwards, 666 notches (maximum permissible error +/- 5 notches in indicated position) Technical service manual...
- Page 13 Check the following if the sensor (A, Fig. 2a) does not read: - the connection flat; - that the sensor is correctly assembled in its housing. If these checks do not rectify the problem, replace the sensor (A, fig.2a) as follows: - remove the weight tray - remove the sensor lever;...
- Page 14 Replacing the distance zero position sensor (detects rest position of sensor arm) In the event of incorrect distance and diameter readings, check that the zero position sensor functions correctly as described in chapter “98 Displaying internal sensor func- tion”. Check the following if the sensor (C, Fig. 2b) does not read: - the connection flat;...
- Page 15 adjust the position of the microswitch on its mounting. - Perform the checks described above with a tester. If these checks do not rectify the problem, replace the microswitch, ensuring that the two contacts are reconnected correctly as shown in figure 2d. To replace the microswitch, loosen the two screws (A, figure 2d).
- Page 16 REPLACING AND ADJUSTING THE PICK - Open the weight-holder lid, first undoing the fixing screws. - Remove the plastic guard of the central unit. - Disconnect the pick up cable from the motherboard. - Undo the two M8 dowels and remove the pick ups. - Fit the new pair of pick ups, taking care that the two balls locate correctly inside the recesses provided, then tighten the fixing dowels so that the pick ups move with just a little friction.
- Page 17 (as described in the relative paragraph). - Disconnect the connector on the search circuit board and the pick up cable on the motherboard. - Unscrew the three fixing screws on the beam and remove the central unit. - Fit the new central unit. The three fixing screws must be tightened to a torque of 48 Nm. - Replace the search circuit board complete with support.
- Page 18 Fig.3 REPLACING THE WHEEL SPIN MOTOR AND/OR ROLLER - Open the weight-holder lid, first undoing the fixing screws. - Disconnect the motor cables from the PEAC circuit board connector. - Undo the lock-nut which fixes the adjuster washer. - Completely tighten the adjuster check-nut (D, fig. 3). This eliminates the preload of the spring (B, fig 3).
- Page 19 REPLACING THE BRAKE SHOES - Open the weight-holder lid, first undoing the fixing screws. - Remove the plastic guard of the central unit. - Remove the search circuit board (B, fig. 4) from the supporting brake (C, fig. 4). - Disconnect the motor power supply cable. - Remove the wheel spin device and the motor unit.
- Page 20 TROUBLESHOOTING The balancing machine features autotest and autodiagnostics programs which provide in- formation about most possible failures and the relative corrective measures (refer to the list of error messages and the “Troubleshooting” section in the operator’s manual). However, there are malfunctions which the machine is not able to recognise; a list of them is provided below.
- Page 21 “THE MACHINE DOES NOT PERFORM THE WHEEL SPIN WHEN the START BUTTON IS PRESSED and/OR THE GUARD IS LOWERED” In this case the various causes can be identified on the basis of the information on the displays. 1) The displays continue to display the imbalance values calculated previously. The motherboard is not receiving or not “hearing”...
- Page 22 “AT SWITCH-ON THE DISPLAYS SHOW “ttt” After switching off the machine, set microswitch 2 of the “SW 2” pair in the “Work” posi- tion. “THE DISTANCE VALUE ACQUIRED AUTOMATICALLY WITH THE SENSOR IS DIFFERENT FROM THE REAL VALUE” In the service environment, check that the potentiometer is working correctly, by checking (see also “Replacing and Adjusting the Distance Potentiometer”): - the continuity of the operating range;...
- Page 23 If the checks described above do not reveal any faults, replace the central unit, check- ing for noise on the bearings if appropriate. IT IS NOT POSSIBLE TO BALANCE THE WHEEL: when the weights indicated by the balancing machine are applied and then a checking wheel spin is performed, new imbalance values appear at random.
- Page 24 DURING A WHEEL SPIN: • the machine remains cut out with the beeper sounding;” • unknown characters appear on the displays;” • the machine performs a lamp test and resets.” The defect, normally sporadic, may occur due to a temporary loss of power on the motherboard, or due to an interference or malfunction on the motherboard.
- Page 25 Note Technical service manual...
- Page 26 GENERAL ELECTRIC LAYOUT DIAGRAMS Power supply and controls board Mother board (CPU) Search board Internal pick-up External pick-up FU.. Fuse Motor Master switch Internal distance potentiometer Distance resetting micro-switch Diameter resetting micro-switch Diameter measuring sensor Distance measuring sensor Safety guard microswitch Power supply transformer Connector Power supply socket...
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- Page 29 Cod. 4-101700 Technical service manual...
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- Page 33 Cod. 457674B Technical service manual...
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- Page 35 Cod. 4-104447A Technical service manual...
- Page 36 MONDOLFO FERRO S.p.a. Viale dell'industria, 20 - 61037 MONDOLFO (PU) Italy info@mondolfoferro.it www.mondolfoferro.it...
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