Control Techniques Unidrive Servo Series Product Data page 56

typical applications
Flying Cut Off - Inline
Objective: Provide an easy method for an operator to
enter product cut lengths
Solution: Unidrive with UD70 motion profiler and CTIU
operator interface.
Operation: When the correct product length passes, the
cut bar is accelerated to match the speed of
the product. When speed is matched, an
output is activated sending the cutter head
down. The operator is able to set the length
using the CTIU operator interface.
Results: Easy data entry with fast and accurate cut cycles.
Rotary Cut Off
Objective: Cut material to user specified length and
maintain cut on the registration marks.
Solution: Unidrive with UD70 natural profiler.
Operation: the UD70 monitors the encoder position and
product registration sensor to insure that the
product is cut in the correct position. The
UD70 has the capability to learn the exact new
length of the product even if the operator
enters a length close to the correct length. Any
changes to the drive parameters can be made
on the fly.
Results: Synchronised system provides fast and
accurate cut lengths exactly placed on
registration marks.
Positioning with a Unidrive
Objective: Increase accuracy and performance and
minimize cost.
Solution: Unidrive with UD70 positioner
Operation: Proximity switches are placed at the desired
drill position. The Unidrive is configured to stop
at an exact and consistant deceleration rate.
Results: Fast and accurate positioning of workpiece
with system cost minimized.
56
CTIU
Operator Interface
SCS-X
Encoder
Motion
Velocity
Output 21on
Output 22on
(+)
Index 2 Output s off
10,000 inches
Index 4
Index 3
Index 1
return to 0 position
2,000 inches 2,000 inches
Motion Program
(-)
Unidrive
with
UD70
Registration
Sensor
Load and Upload
Area
Leadscrew Pitch: 2 TPI
Repaetability: +/-0003
Workpiece
inches
Speed: 1750 IPM
SELECTED ACCEL & DECEL
PROGRAMMED RAMPS
SPEED
STOP CONTACT STOP CONTACT
CLOSES
OPENS
PROGRAMMED MOTOR
STOP POSITION
Unidrive
with UD70
Unimotor
Motion
Wait for 40 more
inches to pass
Unimotor
Encoder
Rotary
Knife
Flow
Drill Tap
Unidrive
eg Profibus,
Devicenet
Unimotor