User's Manual

6 LS420 Universal User Manual V2.91 2003-01-21.doc
1.3 LS420 Buttons
Bypass
1) The basic function of the bypass button is to bypass the anti-two block lock-
out for emergency purposes. The alarm will remain silent until the next two-block
event; lockout will re-engage as soon as the button is released.
2) When one of the operating screens is displayed, pressing the bypass button automatically
returns the display to the main hoist operating screen.
3) When adjusting a limit, a parts of lines or tare, pressing bypass the button automatically re-
turns the display to the operating screen from which the limit, parts of lines or tare function was
accessed.
Hoist
1) The hoist button allows the operator to scroll the display from the main oper-
ating screen to the sensor specific operating screens appropriate to system con-
figuration. Operating screens may include:
a) The main hoist operating screen which shows the parts of lines for the
main hoist, the load on the main hoist including the tare/no tare indicator and potentially
the current wind speed, the main boom angle and the luffing jib angle.
b) The auxiliary hoist operating screen which shows the parts of lines for the auxiliary hoist,
the load on the auxiliary hoist including the tare/no tare indicator and potentially the cur-
rent wind speed, the main boom angle and the luffing jib angle.
c) The main and auxiliary hoists' load maximum limits screen.
d) The boom angle maximum and minimum limits screen.
e) The luffing jib angle maximum and minimum limits screen.
f) The wind speed maximum limit screen.
Note: the precise order and aspect of operating screens depends on system configuration.
2) When adjusting limits (after pushing either the limit+ or limit- buttons) the hoist button al-
lows the operator to scroll the display between adjustable limits of the system configuration.
For example: the main and auxiliary hoists' maximum load, the boom and luffing jib maximum
and minimum angles, and the wind maximum speed.
3) When adjusting the parts of lines (after pushing the parts button) or using the tare function
(after pushing the tare button) the hoist button allows the operator to scroll between the main
and auxiliary hoists.
Parts
1) The parts button allows the operator to adjust the parts of lines displayed for
the main and auxiliary hoists. Use the limit+ and limit- buttons to adjust the parts
of lines and the hoist button to scroll the display between the main and auxiliary
hoists.
2) Precise concordance between crane configuration and parts of lines indicated by the LS420
is necessary for accurate load display.
3) When the battery status of a wireless sensor is displayed in the test function, press the
parts button to select and hold the radio reception diagnostic screen.