Prolec PME300

Prolec is a market leader with 30 years of experience supplying machine productivity and safety systems to the construction equipment industry. Prolec’s success stems from innovative applications of sensor technology, application software, system integration and plant instrumentation. In more recent years Prolec have looked to redefine the market with their revolutionary Prolec Machine Engine (PME).

Prolec PME300 and PME300+ are Prolec’s most purpose designed systems to control the slew of construction equipment.

The Prolec PME300 and PME300+ are slew limiters that monitor and control the radial motion of any slewing equipment. These systems will check the machine’s movement relative to a pre-determined ‘safe’ zone and warn of or control the machine’s movement when approaching the limit. PME300 provides a simple zone of control using left and right limits whereas PME300+ allows complex geometry and dual ‘virtual’ wall control as needed. The system uses Prolec’s proprietary ‘engine’ so is independent of machine type allowing any slewing and articulating machinery to be monitored including fixed installations (e.g. deck cranes). The system will also provide full logging of operation and driver behaviour for later retrieval and play back and stores up to a year’s worth of data. When combined with suitable hydraulic controls the system will lock out movement into predefined unsafe situations.

Like all Prolec PME products, the PME300 and PME300+ can be upgraded to use other functions and quickly through software changes to provide control on lifting, stability, machine envelope and cab protection.


  • Slew
  • Stability


  • Slew Limiters
  • Machine Envelope Monitoring


  • Excavators
  • Telehandlers
  • Truck-Mounted Cranes
  • Mobile Cranes
  • Special Purpose Machines
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