National Crane Published 03-23-2018 Control # 243-14 7-9
NBT50 OPERATOR MANUAL RATED CAPACITY LIMITER
Hoist & Reeving Configuration
Screen 7
Select 1 to show the Main Hoist enabled; select 2 to show
the auxiliary hoist enabled.
The hoist that is being used will be displayed in Screen 7 and
on the RCL Operating Mode Screen in blue (page 7-4).
Screen 8
If selected 1 (Main Hoist) on Screen 7; use the up and down
arrows to change reeving from 1 part line up to 10 parts line
on Screen 8.
Confirmation
After the RCL crane configuration setup is complete,
confirmation Screen 9 is displayed. Check the configuration
and select OK if the configuration is correct. This verifies the
lift configuration of the crane.
If the confirmation Screen 9 is not correct, use the back
arrow key to go back to Screen 8 and correct the
configuration.
If the machine is shut down and restarted again within 2
hours, the operator can select OK at Screen 9. Selecting OK
will automatically return the RCL to the configuration used at
shutdown. Re-configuration of the RCL will not be required.
Screen 9
OPERATING MODE
After the RCL is setup is complete the RCL Operating Mode
screen is displayed.
The key functions at the bottom of the RCL Operating Mode
screen are:
- MAIN - Pressing this key returns to the MAIN Menu
screen.
- - Horn Silence indicates the RCL warning
horn is temporarily disabled for 15 seconds. The
horn silence button icon will be shaded when active.
- # - Reeving selecting screen; pressing this button
returns to the number of parts of line selection
screen.
- LIMIT - Pressing enables the RCL Limits Menu
screen.
- TARE - Pressing temporarily zeros out the Actual
Load indicated on the screen to show the weight of
the load only.
The following RCL Operating Mode - Sample has been set
up with extended jib @ 30° offset, all limits set and displays
the following:
RCL Operating Mode - Sample
RCL Load Chart
Number
% of Maximum
Capacity
Load Moment Bar Graph
7623-20b
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