Related Manuals for Dover TWG GC MicroGuard 586
Summary of Contents for Dover TWG GC MicroGuard 586
- Page 1 MicroGuard ® Rated Capacity Indicator System for Truck-Mounted Cranes Miller Operation Setup Maintenance...
- Page 3 W450030r2 03/16...
- Page 4 Introduction The MicroGuard 586 System (hereinafter referred to as “the system”) is designed for use as an aid to crane operation. This system is not to be used in the place of an operator who is knowledgeable in safety guidelines, crane capacity information, and the crane manufacturer’s specifications. This manual describes operation, setup, and troubleshooting procedures for the system.
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Page 5: System Description
System Description The MG586 Rated Capacity Indicator/Limiter System is a visual and audible system used in the operation of the MR30 Miller recovery vehicle. The system includes a computer, an operator’s display console, an extension reel, and various types of electrical cables and sensors, and is designed to measure and display load weight, calculate and display maximum capacity, percentage of rated capability, crane configuration numbers, parts-of-line, and warn of an approaching overload or two-block condition for each crane configuration. - Page 6 provides all of the functions necessary to read the system sensors, process computations, and control the disconnect functions. Information defining the physical characteristics of the crane has been loaded during factory setup to reliably calculate crane parameters, such as load rated capacity, and interpret the crane capability chart and configuration numbers.
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Page 7: Display Windows
Operator’s Display Console Warning/Alarm Indicators The red two-block lamp will illuminate when a two- block condition occurs. The yellow pre-warning lamp will illuminate at 90% of rated capacity. When the load reaches or exceeds 100% of rated capacity, the red overload warning lamp will illuminate along with the yellow pre-warning lamp, when this occurs, the computer will implement a function kick-out, which in turn, disables the boom... -
Page 8: Push Buttons
Push Buttons The SETUP key enables the operator to configure the system to match the actual setup of the crane. Codes are present for: Crane configuration Number of parts of line, up to three parts of line with a maximum of three parts The ALARM OVERRIDE key is used to disable the audible warning and to override the function kick-out for the current alarm... -
Page 9: System Operation
System Operation System Self-Test When the system is turned on, it goes through a brief self-testing process. All three alarm indicators will light up, all display windows will appear black, and the audible alarm will sound. The information display will then show the crane model and capacity chart number for the system configured. -
Page 10: Configuration Selection
Configuration Selection Configuration selection is required upon system power up; however, it can also be entered anytime by pressing the key. The first part of the configuration selection allows for jib selection. Since there are no jib options for this model, the system defaults to the main boom. Press the key to continue. -
Page 11: Recommended Tools
Calibrating the Unit for Proper Operation The MG586 system contains a setup/calibration mode that operates through the system display console. The setup mode provides a means of ensuring that the system sensors are correctly positioned and adjusted following system installation or parts replacement. It is important that each step of this procedure is properly followed for the system to accurately provide load, rated capacity, warnings, and function kick-outs. -
Page 12: Entering Setup Mode
Entering Setup Mode The display will step through each setup operation, as required by the user. The setup mode is activated by the following procedure: 1. With the screen showing a normal working screen mode of operation, hold down “Setup” and “up arrow”... - Page 13 NOTE For new reeling drum installations, once the free end of the cable coil to boom tip has been attached, the shipping clamp should be removed to avoid damage to the cable. When the reeling drum is shipped from the factory, it is preset to “Extension “0, ” and a shipping clamp is applied to the cable. Boom Length Zero and Span Function After completion of the angle “0”...
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Page 14: Angle Calibration
Angle Calibration Presss the UP arrow to select the Angle Span screen. Set the boom elevation to exactly 60 ° using the digital level. While the display in the Angle Span mode, pressing the setup button will cause the system to span the angle at exactly 60 °. -
Page 15: System Maintenance
System Maintenance It is recommended that the following checks be performed on the system prior to each shift or crane operation to help prevent errors or malfunctions: Crane Configuration and System Setup The crane configuration defines the physical setup of the crane. The system setup defines the load parameters for each configuration. - Page 16 System Maintenance (Continued), •The Boom Angle Signal is generated within the extension reel, and designed to measure the angle of the boom relative to the horizon. •The Reel-Off Cable (Extension Cable), extends from the extension reel to the boom tip. The reel-off cable provides an electrical path for passage of the two-block warning signal from the boom tip to the computer cable in the extension reel.
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Page 17: Hydraulic Connections
Hydraulic Connections The two hydraulic pressure sensors mounted within the computer, measure the pressure within each side of the boom hoist cylinder. The pressure sensors are connected to the boom hoist cylinder valve block by two flexible hoses. Both hoses are subject to the full hydraulic pressure contained within the upper and lower sides of the boom hoist cylinder. - Page 18 Computer Cable The extension reel cable to the computer acts as a channel for passage of signals to the system computer. • Ensure that the cable exiting from the extension reel and running down the boom and around its pivot to the computer is free from damage.
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Page 19: Troubleshooting
Troubleshooting System Fault Messages When the system detects a fault, the red warning lamp will illuminate and the message, “WARNING: SYSTEM FAULT” will flash on the display. When a more serious fault is detected, the message, “WARNING: SYSTEM OUT OF SERVICE” will flash. To determine the fault, press the key once or twice. - Page 20 Fault Message Corrective Action This message indicates an Anti Two-Block wiring problem usually due to an electrical short to the boom or a damaged cable. 1. Inspect/check cabling and connections from computer to extension reel on the side of the boom. Check ATB Wiring 2.
- Page 21 Extension Reel Voltage Checks If problems occur with the two-block alarm operation, angle, or extension sensor, the following chart details voltage checks that may be made within the extension reel. Follow the action column before measuring voltages at the specified points in the voltmeter connection columns. Measure all voltages with a digital voltmeter set to DC volts range.
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Page 22: Computer Internal Status Indicators
Computer Internal Status Indicators The computer unit contains 9 LED indicators that provide an aid to checking presence of power supply voltages and communications between the computer and display console. There are 6 power indicators (D8, D10, D11, D13, D14, and D17) and three communications indicators (D7, D9, and D12), all Indicators are bright green light emitting diodes. - Page 23 Computer Internal Status Indicators (Continued), NOTE Due to the differences in computer unit configurations, the locations of these indicators may vary, as shown below. LED Indicator Function Communication Indicator TST0 Battery Power_POS Communication Indicator TST1 +10V COMM (Communications Indicator) +8V2 +3V3 MG586 Troubleshooting W450030A 12/10...
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Page 24: Computer Replacement
Computer Replacement To remove the computer unit: 1. Place the boom in its rest. 2. Turn off electrical power. 3. Disconnect all electrical connectors from/to the computer. 4. Disconnect hydraulic hose connections from/to the computer. 5. Remove computer from mounting. THE HYDRAULIC HOSES CONNECT DIRECTLY TO THE BOOM HOIST WARNING CYLINDER. - Page 25 ATB Cable Replacement for A240700 Reel Assembly...
- Page 26 SLIP RING W450030r2 03/16...
- Page 27 W450030r2 03/16...
- Page 28 SLIP RING W450030r2 03/16...
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- Page 30 11135 South James • Jenks, OK 74037 Phone: (918) 298-8300 Fax: (918) 298-8301 www.dovertwg.com As a leader in product innovation, TWG is committed to the ongoing improvement of its equipment. We reserve the right to make changes to our products without notice. ©2020 TWG.
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