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GKD Technik Ltd
M3000007
SpaceGuard Systems con�nued...
Pre-emp�ve stopping
The SpaceGuard system implements a pre-emp�ve stop so�ware to allow the system to predict the stop
posi�on of the machine when running quickly. This means that the machine may stop early when
approaching a limit quickly. It will then release the motion cuts and allow slow movement towards the
limit. The use of pre-emp�ve stops take into account inefficiencies in braking and reac�on �mes for stop
valves.
Margins
The SpaceGuard system applies a dead band margin to the limits set by the user to ensure that should a
pre-emp�ve stop occur very close to a limit the system will not allow an overshoot.
Safety System and mismatches
The SpaceGuard system continuously monitors the inputs from the angle and slew sensors to check that
they agree. If there is a mismatch then
“Safety Mismatch”
will be displayed and all motions are disabled.
Should this occur an override button appears on the screen to allow movement to a safe posi�on.
Only use the override button for recovery purposes. If the mismatch is cured then the Override button
will disappear and normal opera�on recommences. The external
“�pping”
alarm will sound constantly
under a mismatch condition, and will con�nue to sound once the override button is pressed. The alarm
will stop only once the mismatch is cured.
Should a safety mismatch warning occur, use the override button provided to re-enable motion, and slew
the machine over 0° of slew to reset the slew sensor. Should this fail to correct the mismatch, further
inves�ga�on will be required by a service engineer to determine the cause of the mismatch and to
correct the fault.
WARNING - WHEN THE “OVERRIDE” BUTTON IS USED TO RE-ENABLE MOTION, NO PROTECTION IS IN
PLACE WITH REGARD TO SLEW OR HEIGHT LIMITS OR VIRTUAL WALLS.
IT WILL BE POSSIBLE TO EXCEED ANY SET LIMITS.
Safety Mismatch at start up
There may be occasions when the safety mismatch occurs at start up due to slew angle differences
accumulated during shut down. Use the override button to slew round past the reset sensor on the
floa�ng end (0°) of the machine. Once the slew is synchronized the machine may be operated normally.