 | |
| Illustration 1 | g00747740 |
There is one switch on TH62, TH63, TH82 and TH83 machines. The switch is a mechanically operated switch that has contacts.
 | |
| Illustration 2 | g00747741 |
There are two switches on TH103 machines. These switches are proximity switches.
On TH62, TH63, TH82 and TH83 machines, the switch sends an electrical signal to the display module when the boom has been extended or when the boom has been retracted beyond a certain point.
On TH103 machines, one switch sends an electrical signal to the display unit when the boom has been extended or when the boom has been retracted beyond a certain point. The other switch sends an electrical signal to the display unit when the boom has been extended or when the boom has been retracted beyond a certain different point. One switch operates when the boom is at approximately 33% of full extension. The other switch operates when the boom is at approximately 66% of full extension.
These signals reset the display module in order to reduce errors. The display module attempts to simulate the load chart for the machine. The display module cannot simulate the load chart for the machine precisely by using the output from the sensor alone. The switch, or switches reset the display module in order to help the display module simulate the load chart for the machine more accurately.