Crane LMI Computer Calibration Manuals
Crane LMI Computer Calibration Manuals
The purpose of these manuals is to provide the calibration technician with the procedures essential for the promotion of proper machine operation for its intended purpose. The importance of proper usage cannot be overstressed. The calibration technician should have read, and be familiar with, the instruction manual supplied with the system.
All information in these manuals should be read and understood before any attempt is made to calibrate the machine.
Since the manufacturer has no direct control over machine application and operation, conformance with good safety practice in this area is the responsibility of the user and his operating personnel.
All procedures herein are based on the use of the system under proper operating conditions, with no deviations from the original design. Alteration and/or modification of the equipment are strictly forbidden without written approval from RaycoWylie Systems.
The i4300 & i4500 RaycoWylie Systems Rated Capacity Indicator (RCI) is to be regarded only as an aid to the operator. When the parameters are set correctly, the indicator will warn the crane operator of an approaching overload condition that could cause damage to equipment, property, and/or injury to the operator or site workers in the vicinity of the crane and its load. Prior to the calibration being completed the system will not provide correct warnings and it is essential that other means are used to establish safe use of the machine.
This system must never be used, under any circumstances, as a substitute for the good judgment of a crane operator when carrying out approved crane-operating procedures. Responsibility for the safe operation of the crane lies with the crane operator. The indicator equipment will not necessarily prevent crane damage due to overloading and related causes if not set properly.
Before operating a crane equipped with a RaycoWylie system RCI, the operator must carefully read the information in the i4300 operator manual and the crane manufacturer operator’s manual. He must also be aware of all the federal, state and local safety standard and regulations applicable to his job. Correct functioning of the system depends upon routine daily inspection.
Any suspected faults or apparent damage should be immediately reported to the responsible authority before using the crane.
All information in these manuals should be read and understood before any attempt is made to calibrate the machine.
Since the manufacturer has no direct control over machine application and operation, conformance with good safety practice in this area is the responsibility of the user and his operating personnel.
All procedures herein are based on the use of the system under proper operating conditions, with no deviations from the original design. Alteration and/or modification of the equipment are strictly forbidden without written approval from RaycoWylie Systems.
The i4300 & i4500 RaycoWylie Systems Rated Capacity Indicator (RCI) is to be regarded only as an aid to the operator. When the parameters are set correctly, the indicator will warn the crane operator of an approaching overload condition that could cause damage to equipment, property, and/or injury to the operator or site workers in the vicinity of the crane and its load. Prior to the calibration being completed the system will not provide correct warnings and it is essential that other means are used to establish safe use of the machine.
This system must never be used, under any circumstances, as a substitute for the good judgment of a crane operator when carrying out approved crane-operating procedures. Responsibility for the safe operation of the crane lies with the crane operator. The indicator equipment will not necessarily prevent crane damage due to overloading and related causes if not set properly.
Before operating a crane equipped with a RaycoWylie system RCI, the operator must carefully read the information in the i4300 operator manual and the crane manufacturer operator’s manual. He must also be aware of all the federal, state and local safety standard and regulations applicable to his job. Correct functioning of the system depends upon routine daily inspection.
Any suspected faults or apparent damage should be immediately reported to the responsible authority before using the crane.
Sample Crane LMI Computer Calibration Manual
- NOT FOR ACTUAL USE -
Sample Crane LMI Computer Calibration Manual
- NOT FOR ACTUAL USE -
- NOT FOR ACTUAL USE -
1. Introduction
The fictional Crane LMI Computer system is preloaded with the operating software (Windows-based), the load chart file and the master calibration for this unit. The purpose of this procedure is to adjust the values of the master calibration to improve accuracy of this specific unit. The crane LMI computer calibration procedure can be looked at as two separate tasks: 1) THE SENSORS; length and angle. 2) FAST CAL; tweaking the master calibration file to ensure the correct radius, empty hook weight, and proper load value with test weight.
Before each calibration step make sure the duty selected on the main page corresponds to the actual configuration of the crane. The calibration menu options are specific to the duty selected.
In order to ensure the load calibration is correct, make sure that the presence of the correct jib is indicated in the duty selection process if the jib is mounted on the side of the boom.
Before each calibration step make sure the duty selected on the main page corresponds to the actual configuration of the crane. The calibration menu options are specific to the duty selected.
In order to ensure the load calibration is correct, make sure that the presence of the correct jib is indicated in the duty selection process if the jib is mounted on the side of the boom.
2. Units
In order to change and set your desired units appearing on the main screen, press the mode button on the top left. Scroll to “units” and select the desired units. This is independent of the calibration units. To change and set the calibration units, go to the calibration menu (see section below to access the calibration menu). Scroll down to “calibration units”. It will be either metric or imperial. If metric, then use metric values if calibrating the boom length, and BAR if calibrating the transducers. If it is set to imperial, the length calibration will be in feet and the pressure calibration will be in PSI.
3. Calibration Menu
Warning: While in calibration mode, the lockout functions of the fictional crane lmi computer system may be disabled, exercise caution.
Note: Do not press any button while the system is saving a value, wait until the display indicates that the operation is complete.
Enter calibration mode by pressing the upper left button, scrolling down to ‘calibration’ and pressing the checkmark button. Enter the password. There are two passwords used to enter the calibration menu. If 01234 does not allow access to dimension, cal data, system options, use 04321. You are now ready to calibrate.
Note: Do not press any button while the system is saving a value, wait until the display indicates that the operation is complete.
Enter calibration mode by pressing the upper left button, scrolling down to ‘calibration’ and pressing the checkmark button. Enter the password. There are two passwords used to enter the calibration menu. If 01234 does not allow access to dimension, cal data, system options, use 04321. You are now ready to calibrate.
4. Angle Calibration
Perform this step on outriggers. On the main screen, select the duty that corresponds to your current configuration. With the boom resting on the physical stop, lift the boom until your digital angle gauge indicates zero degrees.
Enter calibration mode (see procedure in section 2)
- Use the up or down buttons to choose the “select sensor” line and press the check mark.
- Highlight the angle sensor and press the check mark.
- Wait for the system’s confirmation.
- Scroll down to choose the “span sensor or side of boom angle” line and press check mark. Ensure that the angle sensor is shown as being installed on the left side of the boom, if not press checkmark and then scroll up or down to change the value to left, then press the checkmark.
- Choose “Zero sensor” line and press check mark.
- Press the check mark to highlight the value for “Zero Angle 1”, and enter zero for each digit by pressing the check mark to move to the next digit and using the up and down arrows to change the value for each digit.
- Return to the main screen and elevate the boom to validate angle reading by comparing to your digital device.
Enter calibration mode (see procedure in section 2)
- Use the up or down buttons to choose the “select sensor” line and press the check mark.
- Highlight the angle sensor and press the check mark.
- Wait for the system’s confirmation.
- Scroll down to choose the “span sensor or side of boom angle” line and press check mark. Ensure that the angle sensor is shown as being installed on the left side of the boom, if not press checkmark and then scroll up or down to change the value to left, then press the checkmark.
- Choose “Zero sensor” line and press check mark.
- Press the check mark to highlight the value for “Zero Angle 1”, and enter zero for each digit by pressing the check mark to move to the next digit and using the up and down arrows to change the value for each digit.
- Return to the main screen and elevate the boom to validate angle reading by comparing to your digital device.
5. Length Calibration
Make sure your duty is selected to the current crane configuration. Bring the boom to a fully retracted position.
Enter calibration mode (see procedure in section 2)
- Use the up or down buttons to choose the “select sensor” line and press the check mark.
- Highlight Length 1 and press the check mark.
- Wait for the system’s confirmation.
- Scroll down to choose the “zero sensor” line and press the check mark.
- The sensor’s value must be approximately 100 bits (if not, remove cable reel cover, press down on the potentiometer and turn the gear).
- Press the check mark to edit each digit of the zero value (since the boom is completely
retracted, each digit must be set to zero).
- Press the check mark to confirm the value of the last digit.
- Press the escape button above the check mark to return to the calibration page.
- Scroll down to choose the “span sensor or side of boom angle” line and press check mark.
- Extend the boom completely. The sensor value must be less than 950 bits. (A short boom crane should have a value of about 700 bits and the longer boom models are generally around 900 bits).
- Refer to the crane main boom chart. Enter the difference between the fully extended main
boom length and the fully retracted main boom length. For example: A fully extended boom of 81 feet minus a fully retracted boom of 34 feet = 47 feet. You enter 47.0 at span extension.
- Press the check mark to edit each digit of the span value using the up or down buttons to adjust each digit of the span value.
- Press the check mark to confirm the value.
- Press the escape button above the check mark twice to return to the main screen.
The value for the extended boom should now be displayed on the screen above the boom. Fully retract the boom and verify that the calculated length matches the value on the load chart.
Enter calibration mode (see procedure in section 2)
- Use the up or down buttons to choose the “select sensor” line and press the check mark.
- Highlight Length 1 and press the check mark.
- Wait for the system’s confirmation.
- Scroll down to choose the “zero sensor” line and press the check mark.
- The sensor’s value must be approximately 100 bits (if not, remove cable reel cover, press down on the potentiometer and turn the gear).
- Press the check mark to edit each digit of the zero value (since the boom is completely
retracted, each digit must be set to zero).
- Press the check mark to confirm the value of the last digit.
- Press the escape button above the check mark to return to the calibration page.
- Scroll down to choose the “span sensor or side of boom angle” line and press check mark.
- Extend the boom completely. The sensor value must be less than 950 bits. (A short boom crane should have a value of about 700 bits and the longer boom models are generally around 900 bits).
- Refer to the crane main boom chart. Enter the difference between the fully extended main
boom length and the fully retracted main boom length. For example: A fully extended boom of 81 feet minus a fully retracted boom of 34 feet = 47 feet. You enter 47.0 at span extension.
- Press the check mark to edit each digit of the span value using the up or down buttons to adjust each digit of the span value.
- Press the check mark to confirm the value.
- Press the escape button above the check mark twice to return to the main screen.
The value for the extended boom should now be displayed on the screen above the boom. Fully retract the boom and verify that the calculated length matches the value on the load chart.
6. Transducer Calibration
Warning: While in calibration mode, the lockout functions of the Grove, or LinkBelt, or Manitex, or National, or any other crane LMI system may be disabled, exercise caution.
If you are calibrating a fictional crane LMI computer system using canbus pressure transducers, go straight to section 7.0
If you are upgrading the console from one fictional LMI computer to another crane computer while using pressure transducers, it is recommended to perform a pressure transducer calibration. See section xx on page xx in the appropriate manual. If your calibration units are in imperial, you will need to convert the BAR values of pressure sensors to PSI.
In order to recalibrate the transducers using PSI, get the BAR value from the transducer, (inscribed onto the body of the transducer, normally 260.0 to 290.5), and multiply by 14.5.
Example: A single transducer for load 1, BAR value is 275.7, PSI value is 3997.65 (275.7x14.5=3997.65). This will be the number entered for “Span Load 1” in “Span Pressure”.
Warning: If you recalibrate using the BAR value when you needed PSI, your load reading on the main screen will always be zero, and if you go to “Load Offset” in “Calibration”, you will see that the actual load is about -3000lbs when there is no pressure in the lift cylinder.
If you are calibrating a fictional crane LMI computer system using canbus pressure transducers, go straight to section 7.0
If you are upgrading the console from one fictional LMI computer to another crane computer while using pressure transducers, it is recommended to perform a pressure transducer calibration. See section xx on page xx in the appropriate manual. If your calibration units are in imperial, you will need to convert the BAR values of pressure sensors to PSI.
In order to recalibrate the transducers using PSI, get the BAR value from the transducer, (inscribed onto the body of the transducer, normally 260.0 to 290.5), and multiply by 14.5.
Example: A single transducer for load 1, BAR value is 275.7, PSI value is 3997.65 (275.7x14.5=3997.65). This will be the number entered for “Span Load 1” in “Span Pressure”.
Warning: If you recalibrate using the BAR value when you needed PSI, your load reading on the main screen will always be zero, and if you go to “Load Offset” in “Calibration”, you will see that the actual load is about -3000lbs when there is no pressure in the lift cylinder.
7. Fast Calibration
The system is now ready for load calibration. Follow the steps in the order listed below. Boom movements while calibrating the load should be as slow as possible. Avoid quick starts and stops that could cause the boom to bounce.
** Please Note** This has been a fictional calibration sample to show certain aspects of the process and should not be used as an actual procedure for any Grove, LinkBelt, Manitex, National or any crane LMI or RCI crane warning system.
