NOTE:
The servo center position is used to reset the digital position count to zero whenever the actuator
reaches the servo center position.
Pitch
The pitch setting is used to set the lead screw pitch. This setting is pre-set at the factory and should not be
changed without consultation with the factory. The pitch can be incremented in multiples of 0.25 mm.
WARNING:
Changing the pitch setting would affect the digital position count of the actuator and hence the
effective stroke of the actuator. Setting the pitch higher than the actual pitch would reduce the effective
stroke length and vice versa.
WARNING:
Never set the pitch to a value that is less than the actual pitch. This can result in the actuator
reaching its mechanical limits and possible actuator damage.
Motor Polarity
The motor polarity setting is used to reverse the direction of the actuator. This setting changes the behavior
of the actuator both in automatic mode as well as in manual mode. Depending on the sensor installation the
motor polarity needs to be reversed to make sure that the automatic correction is in the right direction.
WARNING:
If the motor polarity is set incorrectly the web guide structure will move in the opposite direction
of the desired correction when in automatic mode. This is an immediate indication of the incorrect setting.
Servo Center Polarity
The polarity of the servo center can also be changed in order to accommodate various locations for the
sensor installation. This may be necessary if the location of the servo center is changed or if a different type
of servo center sensor is used.
WARNING:
If the servo center polarity is set incorrectly the actuator will move away from the middle
position when the servo center button is pressed. This might cause the actuator to hit the mechanical limits
and might cause damage to the actuator.
Speed
The actuator speed can be increased or decreased using the slider. The value set indicates the percentage of
the maximum and minimum speed setting for the actuator.
WARNING:
When the speed is set to 0% the actuator will not respond in the automatic mode.
Acceleration
The actuator acceleration can be increased or decreased using the slider. The value set indicates the
percentage of the maximum and minimum acceleration setting for the actuator. Higher acceleration may
result in lower thrust output from the actuator.
WARNING:
When the acceleration is set to 0% the actuator will not respond in the automatic mode.
Content subject to change without notice
SCU5: Sensor and Web Guide Controller User Manual v 3.6| Page 37
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