WARNING:
Changes to these settings can have a significant effect for both sensing and guiding
applications. Wrong settings can cause damage to the actuator, web guide or devices connected to the
SCU5 controller. Hence only those well versed in the operation of the web guiding system or the
measurement/sensing system should change these settings.
Actuator Setting
The actuator setting screen allows the power user to set the actuator parameters such as stroke length, lead
screw pitch, actuator speed, acceleration, the motor polarity and the servo center polarity.
WARNING:
The actuator parameters are typically
preset from the factory and should only be
changed with consultation with the factory.
Except for speed and acceleration all other
parameters need not be changed once the web
guiding system is commissioned for operation.
NOTE:
The actuator parameters are intended to
be changed by maintenance personnel with
sufficient knowledge about the web guiding
system and its performance. Most often these
settings are changed during initial commissioning,
after an actuator upgrade or replacement and/or
with after a retrofit installation.
Stroke
The digital stroke length can be changed in multiples of 5 mm and can be incremented or decremented using
the + and - keys. This digital stoke setting is used to keep track of the distance the actuator can move on
either side from the servo centered position. Hence from the middle position (servo centered position) the
actuator will travel half the stroke length on either side. This digital stroke length setting helps prevent the
actuator from hitting the mechanical limits and prevent any motor damage in the event that the actuator
moves when no web is present.
NOTE:
The actuator position is tracked digitally using software and the actuator stops actuating once the
digital limits are reached. The digital limit of the actuator may not correspond to the physical limits of the
actuator or the web guide structure. These digital limits are available to prevent the actuator from hitting
the mechanical limits and to avoid any possible motor burnout.
WARNING:
Never set the stroke length more than the physical stroke length of the actuator. Setting a stroke
length more than the physical stroke available in the actuator may cause actuator damage.
WARNING:
Never set the stroke length more than the physical stroke length available on the web guide
structure. Setting a stroke length more than the physical stroke available may cause actuator damage.
Content subject to change without notice
SCU5: Sensor and Web Guide Controller User Manual v 3.6| Page 36
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