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Gradually increase the value for the Home Detection Torque until tool reliably returns to the
Home position.
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When a good value for the Home Detection Torque is found, if the tool is bouncing back to a
partially closed position after hitting the Home stop, gradually increase the value for the Hold at
Home Torque until bounce back is eliminated.
14.4 Controller Parameters Affecting Tubenut Homing
Controller parameters for tubenut operation can be viewed and modified from the Controller->Tool
Setup->Disassembly and Tubenut screen.
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Tubenut Homing Max Speed:
o
Speed the tool output socket travels when returning to the Home position.
o
Decreasing this can reduce the impact force when hitting the Home stop.
o
NOTE:
Care must be taken, increasing the speed above the default value; too high of a
value can greatly increase how hard the output will hit the Home stop and potentially
damage the tool.
o
Units: RPM of the tool output socket in the homing direction.
o
Default value: 50 RPM
o
Range: 1 to 200 RPM
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Tubenut Homing Acceleration:
o
Rate at which speed of tool ramps to the homing speed.
o
Units: kRPM/second
o
Default value: 0.5
seconds
o
Range: 0.1 to 10 seconds
•
Tubenut Homing Reverse Dwell Time:
o
Amount of time before the output is allowed to Home, after rundown is complete and
tool lever is released.
o
Units: Seconds
o
Default value: 0.5 seconds
o
Range: 0 to 2 Seconds
•
Tubenut Home Dwell Time:
o
Amount of time tool holds at Home to prevent bounce back
o
Too short of Home dwell time can increase the occurrence of bounce back. However,
decreasing the homing speed can decrease the severity of bounce back after the
Home stop is reached and allow for a shorter dwell time.
o
Units: Seconds
o
Default value: 0.5 Seconds
o
Range: 0 to 2 Seconds
14.5 Tubenut Pinch Detection
14.5.1 Obstruction Detection TID Parameters
The tubenut TID parameters can be viewed and modified from the Tool-> Tool Setup screen. The tool to
be configured must be connected to controller.
•
Obstruction Detection Torque -
(in*Lb)
o
At start of rundown, before the output rotation has passed though the Obstruction
Check Zone (where output is open at the start of the fasting cycle), the tool will stop
and fastening cycle will be aborted if this torque is exceeded.
o
If tool stops, when output is open during this first part of the rundown, without any
obstruction, the value is too low.
