Service manual

_____________
ENCODER SETUP
ENCODER OPTION
The encoder option is useful when the product velocity varies during the application cycle. An example of
such an application is forms on a forms table. With the encoder installed and enabled, the labeler adjusts
the label dispense speed to insure accurate label placement on the product.
The applicator has a differential quadrature incremental encoder interface with times four interpolation
built into the controller board. The encoder connector located on the rear panel has +5V and ground to
power the sensor and the A and B channel interface. The encoder wiring diagram and pin-out information
appear in the Drawings section in this manual and should be consulted for user supplied encoders. Factory
encoders generate 500 pulses per revolution.
NOTES: Label placement units with the encoder option on is in inches; not seconds.
The encoder option will not be accurate with the tamp applicator set to normal tamp.
It’s important to make sure that the applicator is setup properly so labels are dispensed
consistently.
If product speeds are too fast causing the compensated label placement to lag behind the
current label placement, a warning will be given to raise the label placement value.
ENCODER MOUNTING
The method of coupling the encoder to the conveying system is an important consideration because errors
or stress can be introduced to the system. If the encoder is coupled to a drive shaft, motor, etc., a flexible
coupling should be used to compensate for any misalignment between the shaft and the encoder. This
compensation is required because the smallest misalignment can result in high radial loads that may induce
premature bearing failure. If the encoder is connected to the machine using belts and pulleys, be careful
not to over tighten the belts.
An optional mounting kit may be purchased which has a rubber-coated wheel on the encoder shaft. The kit
comes with a mounting plate and a spring loaded pivot plate to hold the wheel against the conveyor
surface. The encoder is wired assuming that the encoder shaft rotates clockwise as you face the encoder.
If counter-clockwise rotation is necessary, reverse the A+ & A- wires going to the control board at
connector J5.
WARNING: Change wires with the power disconnected from the machine.
42