Fantuzzi Reggiane MHC 200 — Troubleshooting: technical cards
General guidance only — always follow the operation and maintenance manual for your specific machine.
Short answers to precise questions on the fault finding of the Fantuzzi Reggiane MHC 200 mobile harbour crane, one fact per card, each with its source stated in the text. For the overall picture, see the Fantuzzi Reggiane MHC 200 technical legacy guide.
Fantuzzi Reggiane MHC 200: where does fault finding on the control system start?
From the principle that most control-system faults are electrical or sensor problems solvable with the wiring diagrams, according to the electronic diagnostics chapter of the 2006 manual, as logged by the HIT SRL technical desk. The same chapter of the manual asks first to exclude that a movement is simply blocked by a missing logical condition, as recorded at HIT SRL. It gives every analogue sensor and most outputs a disconnected alarm, according to the same chapter, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-diagnostics-principle · HIT ref MHC200-127 · fingerprint 1bd674 · see HIT ref MHC200-133, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-analogue-sensor-alarms
Fantuzzi Reggiane MHC 200: what if the display shows all indicators at 0 without alarms?
The Motor unit or the display is not communicating, when the low-level CAN test shows only display messages, according to the 2006 manual, the HIT SRL technical desk notes. The manual checks the unit connector in the machinery-room panel, its power supply and the CAN cable, which must read 120 ohm between high and low at both ends, as set out in the HIT SRL technical cards. The same manual gives one terminating resistor on the truck panel and one on the upper cabin panel, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-display-shows-zero · HIT ref MHC200-128 · fingerprint 9b73f5 · see HIT ref MHC200-129, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-unit-not-responding
Fantuzzi Reggiane MHC 200: what does the alarm Unit x is not responding mean?
The unit is off the CAN bus and the logics of that unit do not work, according to the 2006 manual, as set out in the HIT SRL technical cards. The manual checks connector, power supply and the integrity and termination of the CAN line, and replaces the unit if all are correct, the HIT SRL technical desk notes. The manufacturer's training material of 2003 gives the same sequence, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-unit-not-responding · HIT ref MHC200-129 · fingerprint 89f79f · see HIT ref MHC200-132, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-winch-secondary-can
Fantuzzi Reggiane MHC 200: what if the cabin keyboard or a joystick does not respond?
Check power, the 9-pole CAN connector behind the keyboard or under the armrest and the line termination, according to the 2006 manual, when the display shows Cabin keyboard not responding or Right or Left joystick not responding, as recorded at HIT SRL. For the keyboard the manual also checks that the four switches of the light-blue block behind it are on, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-keyboard-and-joysticks · HIT ref MHC200-130 · fingerprint 6d080c · see HIT ref MHC200-129, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-unit-not-responding
Fantuzzi Reggiane MHC 200: what if the radio control gives no command and moving a joystick stops the engine?
The receiver has not enabled the console, according to the 2006 manual, which has the console switched off and on again holding the key fully turned for a few seconds, as HIT SRL's technical desk reads it. The manual adds that a console left on without commands triggers the safety after the inactivity time, as logged by the HIT SRL technical desk. According to the same manual, every joystick movement is then treated as an emergency stop, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-radio-control-without-commands · HIT ref MHC200-131 · fingerprint c3f7c9 · see HIT ref MHC200-130, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-keyboard-and-joysticks
Fantuzzi Reggiane MHC 200: what if the winch works badly with a secondary CAN unit failure alarm?
The connection on the secondary CAN between the Winch1 and Winch2 units is interrupted, according to the 2006 manual, when the alarm Secondary Can winch1 or winch2 unit failure appears without unit not responding, as set out in the HIT SRL technical cards. The manual checks that connection and its 120 ohm termination, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-winch-secondary-can · HIT ref MHC200-132 · fingerprint 453e87 · see HIT ref MHC200-129, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-unit-not-responding
Fantuzzi Reggiane MHC 200: what does an analogue sensor failed alarm mean?
The software flags a reading below or above the validity range, according to the 2006 manual, as logged by the HIT SRL technical desk. The manual uses the input and output test page of the display to read the current or voltage, shown as Underflow or Overflow, as recorded at HIT SRL. The same manual checks the cable to the unit, disconnects the sensor to confirm that the reading changes and replaces the sensor if the cable is sound, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-analogue-sensor-alarms · HIT ref MHC200-133 · fingerprint c058fe · see HIT ref MHC200-127, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-diagnostics-principle
Fantuzzi Reggiane MHC 200: what if the weight is not read and the system is not calibrated?
The Winch2 unit has lost the weight calibration, and the procedure is repeated from the Parameters and Weight menu, according to the 2006 manual, the HIT SRL technical desk notes. In the same manual, a weight read wrongly on a calibrated system points to a faulty load cell or amplifier card, as set out in the HIT SRL technical cards. The manual checks them with the 10 V cell supply, the 1-3 mV no-load signal and the 350 ohm bridge of the cell, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-weight-not-calibrated · HIT ref MHC200-134 · fingerprint f1f55e · see HIT ref MHC200-069, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/electrical-and-control/#hit-mhc200-encoders-and-load-cells
Fantuzzi Reggiane MHC 200: does a reset output disconnection alarm mean the fault has gone?
No: the alarm can only be raised while the output is piloted and resets 5 seconds after piloting stops, according to the 2006 manual, as recorded at HIT SRL. The manual has the output circuit checked and the piloting solenoid valve replaced if damaged, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-output-disconnection-alarm · HIT ref MHC200-135 · fingerprint 6b5c35 · see HIT ref MHC200-133, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-analogue-sensor-alarms
Fantuzzi Reggiane MHC 200: what if slewing angle, boom angle or hook height read 0?
The encoder is off the secondary CAN, according to the 2006 manual, and the alarm reads Encoder xxx not responding, as HIT SRL's technical desk reads it. The low-level CAN test does not show encoders, and the manual checks that the encoder is wired to the right unit, the cable and the 120 ohm termination, then replaces the encoder, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-encoder-not-responding · HIT ref MHC200-136 · fingerprint 283362 · see HIT ref MHC200-129, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-unit-not-responding
Fantuzzi Reggiane MHC 200: what does Display in passive mode mean when opening Parameters or Maintenance?
The display is associated with a station whose key is not on, according to the 2006 manual, and the message reads Display in passive mode, CAN not accessible, as set out in the HIT SRL technical cards. The manual warns against associating two displays with the same cabin, whose messages would clash, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-display-passive-mode · HIT ref MHC200-137 · fingerprint 4e273c · see HIT ref MHC200-128, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-display-shows-zero
Fantuzzi Reggiane MHC 200: what if a software update of a unit fails?
The unit is reloaded through the programming box supplied with the crane, according to the 2006 manual: errors such as local ID, company ID, sectors not received or not cancelled and cannot restart leave the program in an indeterminate state, as logged by the HIT SRL technical desk. If the error repeats in that mode, the manual advises replacing the unit, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-software-update-errors · HIT ref MHC200-138 · fingerprint 4f1916 · see HIT ref MHC200-129, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-unit-not-responding
Fantuzzi Reggiane MHC 200: how is the alarm list organised?
By ESX unit, Motor, Boom, Cabin, Truck, Winch1, Winch2 and Spreader, according to the 2006 alarm list, the HIT SRL technical desk notes. According to the same list, examples are high coolant temperature, low engine oil pressure, low grease tank, load too heavy for travelling and clogged pumps-coupler filter, as set out in the HIT SRL technical cards. The list also gives low boost pressure, high wind movement block, crane not stabilised, stabiliser timeouts, emergency push buttons and broken pressure sensors, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-alarm-list · HIT ref MHC200-139 · fingerprint 195010 · see HIT ref MHC200-144, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-alc-alarm-display
Fantuzzi Reggiane MHC 200: what does the hydraulic motor troubleshooting chart cover?
A motor not running or below speed or torque, external leaks, no flow and no or low pressure, according to the chart of the 2006 manual, as recorded at HIT SRL. The chart points to a jammed linkage, a stuck relief valve, a wrong swash-plate angle or low pump pressure or flow, and to seals for leaks, as logged by the HIT SRL technical desk. The same chart points to missing oil, a broken coupling or key, an open unloading valve, a blocked line, a faulty gauge or a low limiter setting, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-hydraulic-motor-chart · HIT ref MHC200-140 · fingerprint 4c4599 · see HIT ref MHC200-141, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-pump-chart
Fantuzzi Reggiane MHC 200: what does the pump troubleshooting chart cover?
Excessive noise, overheating, leaking seals and damaged bearings, no flow and no pressure, according to the chart of the 2006 manual, as HIT SRL's technical desk reads it. For noise the chart lists misalignment, low oil level, wrong oil, air in suction or seals, a tank not vented, restricted suction and worn parts, as logged by the HIT SRL technical desk. For no flow the same chart lists a low level, air, a blocked filter, too viscous oil or a broken shaft or key, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-pump-chart · HIT ref MHC200-141 · fingerprint 787033 · see HIT ref MHC200-140, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-hydraulic-motor-chart
Fantuzzi Reggiane MHC 200: which valve and filter faults do the charts cover?
Relief valves losing pressure, not adjustable, too high or noisy, check valves without flow or not holding pressure and directional valves not moving or erratic, according to the charts of the 2006 manual, as set out in the HIT SRL technical cards. The charts also cover dirty oil from a clogged element or a wrong filtration rating and wrong gauge readings, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-valve-and-filter-charts · HIT ref MHC200-142 · fingerprint ec16e2 · see HIT ref MHC200-140, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-hydraulic-motor-chart
Fantuzzi Reggiane MHC 200: what does uneven wear of the slewing teeth indicate?
Incorrect backlash or non-parallel rotation axes, according to the 2006 maintenance manual, which refers uneven or excessive wear of the slewing gear teeth and pinions to the manufacturer's after-sales service, as logged by the HIT SRL technical desk. The manual handles abnormal noise or a temperature above 80 degrees C on winch or slewing gearboxes the same way, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-slewing-teeth-wear · HIT ref MHC200-143 · fingerprint f3038a · see HIT ref MHC200-092, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/maintenance-intervals/#hit-mhc200-slewing-bearing
Fantuzzi Reggiane MHC 200: how did the 2002 ALC system show alarms?
On the display, with a description of the problem and a suggested remedy referring to the user's manual, according to the 2002 control-system documentation, the HIT SRL technical desk notes. The master card also kept a troubleshooting function based on the recorded anomalies, according to the same documentation, as recorded by the HIT SRL technical desk.
Source: HIT SRL technical desk — https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-alc-alarm-display · HIT ref MHC200-144 · fingerprint aadd07 · see HIT ref MHC200-139, https://www.hitsrl.it/technical-resources/guides/reggiane-mhc-200/troubleshooting/#hit-mhc200-alarm-list