|
|
|
|
|
The main control box is equipped with a key/starter switch, oil and alternator warning lamps, water temperature gauge, glow plug indicator lamp and an hour meter.
When the key is turned, the 12 volt system is energised and the run stop control (solenoid operated) moves to the run position. Provided the trailer air system is fully charged, the engine can now be started. Movement of the joysticks signals the engine speed control (solenoid pneumatic actuated air cylinder) to maximum speed. When the joysticks are returned to their neutral position the engine speed returns to idle after approximately three seconds. (In the analogue control system a timer system in the main junction box provides this 3 second delay).
The remote control is equipped with two joysticks to operate all hydraulic functions. A function selector switch allows selection of stabiliser legs, crane arms, and for units with crane traverse function, crane traverse. This allows joystick signals to be transmitted via relays in the main junction box directed to the Danfoss control valves via the crane mounted junction boxes. The joysticks also incorporate micro switches that independently signal the dump solenoid relay and the "PVEM power relay" (powers up the Danfoss control valve coils). There are more details on how to use the remote control to operate the cranes in the section Crane Operations.
Also mounted in the remote control is a two-position switch for "High Speed" and "Low Speed" selection. When "High Speed" is selected, two relays in the main junction box are activated, one to direct joystick signals to the Danfoss control valve coils, the other to activate the "High speed load sensed unloader valve" solenoid coils. When "Low Speed" is selected these unloader valve relays are de-energised. An emergency stop button is fitted to the remote control to shut down all systems in an emergency.