User's Manual

33 LS420 Universal User Manual V2.91 2003-01-21.doc
Chapter 5: Adding and Removing Sensors
• If in difficulty, disconnect and reconnect the yellow cable of the LS420, then press the test
button to verify all calibrated sensors. If in serious difficulty, simply start over by erasing all
sensors from the system (section 5.2), then re-entering them one by one (section 5.1).
• Correctly set the parts of line, tare and all applicable limits for any newly added sensor. The
buzzer will usually sound when a sensor is added until the appropriate limits have been set;
this is to ensure that the limits will be verified. While adjusting limits or parts of line, press
the limit + and the limit - buttons simultaneously to set a default value.
5.1 How To Add A Sensor to the LS420.
5.1.1 The Manual Calibration Mode
Step 1) Determine the ID (a number between 0 and 60000) of the sensor to be added; the ID
is engraved on the sensor. The LS420 uses the ID to identify the sensor.
Sensors should be installed on the crane before engaging in the calibration procedure. Sensors
must transmit to be identified by the LS420; lifting a load with a load cell or changing the angle
of an angle sensor will ensure immediate transmission.
Step 2) To enter the manual calibration mode, hold the bypass button down continuously and
press the tare button once. Release the bypass button when the screen displays "Calibra-
tion Mode".
Step 3) Press the hoist button until the second line of the screen displays “No Sensor”. Use
the parts button to select the type of sensor to be added. Use the limit + and limit - buttons to
set the ID number of the sensor to be added. Use the parts button to select the type of sensor
to be added. Press the bypass button to exit the manual calibration mode at any time.
5.1.2 The Automatic Calibration Mode (An Alternative Method for Adding Sensors)
In the automatic calibration mode the LS420 detects and identifies all functioning LSI sensors
not calibrated to the LS420 and within radio transmission distance. This facilitates adding a sen-
sor that’s ID is not easily determined (e.g.: an a2b at the end of a 300’ boom). Care must be
taken not to add the wrong sensor to the system (e.g.: an a2b on a neighboring crane).
Step 1) To enter the automatic calibration mode hold the bypass button down continuously and
press the limit - button once. Release the bypass button when the screen displays "Auto Calibr
Mode". Press the hoist button twice. The buzzer may make small noises depending on sur-
rounding radio signals.
Step 2) Press the hoist button until the LS420 shows the sensor to be added with the correct
ID. Press the test button to add the sensor to the system. Press the bypass button to exit the
automatic calibration mode at any time.