LSI GS550 Crane Radius Adjustment

Installation & Users Manual

(Part of the GS Series Installation Manuals)

Before proceeding read and understand the following:

For your safety and that of the people that come into contact with LSI products, understand the significance of the instructions included in this guide, respect all laws and regulations and comply with applicable standards. Pay particular attention to items bearing the alert symbol:

 

and the following words:

2.6 LSI GS550 Crane Radius Adjustment 

2.6a Radius Verification and Adjustment

1. Verify the boom and luffing jib* angles, and the boom length**, are indicated correctly.

2. Verify the correct rated capacity chart is selected***.

3. The LSI GS550 Crane Radius Adjustment Test № 1: measure the actual radius and compare to the radius indicated. Repeat with the boom at minimum angle, at 45 degrees, and at maximum angle; repeat at minimum and maximum boom length**. If radius indication is not accurate then go to step 4.

4. Measure the basic radius parameters on the crane.

5. Program the basic radius parameters in the RADIUS SETTINGS menu.

6. Test № 2: measure the actual radius and compare to the radius indicated. Repeat with the boom at minimum angle, at 45 degrees, and at maximum boom angle; repeat at minimum and maximum boom length**. If radius indication is not accurate then go to the next step.

7. If the crane is rigged with the main boom only, then go directly to step 11.

8. If the crane is rigged with a rooster, jib, or other extension then the advanced radius parameters must be measured on the crane and then programmed in the RADIUS SETTINGS menu of the display.

9. Test № 3: measure the actual radius and compare to the radius indicated. Repeat with the boom at minimum angle, at 45 degrees, and at maximum boom angle; repeat at minimum and maximum boom length**. If radius indication is not accurate then go to the next step.
* When the hoist is rigged off of a luffing jib only
** Telescopic boom cranes only
*** Systems with rated capacity charts programmed in the GS550 only

10.Test for boom deflection: is the radius indicated equal to the actual radius with the boom at 0 degrees and at 90 degrees but greater than the actual radius with the boom at 45 degrees? If yes then adjust the boom deflection value to compensate:

a. Raise the boom to 45 degrees with a known load.

b. Compare the indicated radius with the actual radius. Change the boom deflection value and again compare the radius displayed with the actual radius. Repeat until the radius displayed equals the actual radius.

11. Test № 4: measure the actual radius and compare to the radius indicated. Repeat with the boom at minimum angle, at 45 degrees, and at maximum boom angle; repeat at minimum and maximum boom length**. If radius indication is not accurate then refer to Radius Settings.

2.6b LSI GS550 Crane Radius Adjustment Settings

1. Go to menu 4C) RADIUS SETTINGS.

2. Enter the user password and press Enter to go to the first radius settings page 4C1) BOOM LENGTH.

3. Use Back and Next to navigate between the radius settings pages and use Up and Down to adjust the settings.

4. Press Enter to save any changes and press Exit three times to return to the operation display.

2.6c Basic Radius Parameters for a Lattice Crane

2.6d Basic Radius Parameters for a Telescopic Boom Crane

2.6e Advanced Radius Parameters

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