Technical information
562600-000, Issue1.0, March 2014  
30 of 57 
8.1.4 Machine Envelope Controller (MEC) - Height 
*The approach limit is configurable at point of calibration, check system operation before 
commencing work. 
See sections 4.1 and 7.6 for hydraulic override details. 
Once a height limit set, the internal alarm will sound and the RED 
LED will light if the equipment exceeds the current limit. Always 
check that the current limit activates at the set point. The restriction cannot 
be deactivated if in the alarm state. Observe the operational limitations 
given in section 4. 
MEC systems will cut mo-
tion to any section of 
equipment that has 
reached a limit but allow 
other sections to operate 
unhindered unless they too 
reach the set limit. 
  The safe directional indicators will be red. 
Unsafe motion will be locked and is 
indicated by RED arrows/triangles, safe 
motion is indicated by GREEN arrows/ 
triangles 
  The red LED will flash 
  The internal alarm will sound 
If any of the equipment enters the 
approach limit* 
  The amber LED will be lit 
  The internal alarm will sound 
  The message shown here will be 
displayed. 










