Specifications

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3BUS 208 000 R1301 101Platform Tuning
Motion Restriction Sensitivity
The Scanning Platform can be set up to respond with varying degrees of sensitivity
to conditions which prevent or impede movement of the head package.
When the restriction exceeds the defined sensitivity, all drive output ceases and
sensor shutters are closed until corrective action can be taken to clear the condition.
An error message is also sent to the Host computer to notify it of the condition.
The desired sensitivity will depend on the setup of the motor controller and the site
requirements for stopping the head package when an obstruction is met.
Obtaining the correct sensitivity is a matter of adjusting two parameters:
ddcExcessiveErrorPercent, which has an inverse relationship to sensitivity, and
ddcMotionRestrictionPercent, which has a direct relationship to sensitivity.
Table 5-5 lists the sensitivity parameters and examples of values to reach desired
sensitivities. Any value between 0 and 100 may be used. Experimentation will
determine the best values for the site.
Table 5-5 Example of Motion Restriction Sensitivity Values
Note: Motor drive response to restrictions is also influenced by the motor
controller pot adjustment for torque. High settings of the boost and
V/F adjustments will alter the values given in Figure 5-18 on
page 102.
Desired Sensitivity
low medium high default
ddcExcessiveErrorPercent 95 90 80 100
ddcMotionRestrictionPercent 5 20 50 0