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The N-3200-GP
Series FACTS Dispensers are but one of several
different types of Full Analog
Control Tracking Systems
available from Jesco. These systems are used
in demanding applications requiring very precise
bead size control and consistency and where
Robot cycle times need to be minimized.
This Patented Dispensing System allows the Robot
to place a constant sized bead of material on
any part while it varies the speed of the dispense
tip, or if required, vary the bead size at any
point in it’s path independent of the Robot
Tip Speed. The FACTS system does this by responding
instantaneously to an analog signal from the
Robot that is proportional to the Instantaneous
Flow Rate of material required at any point
in the Robot’s path.
The FACTS system pictured above includes an
Electric Servo Driven High Viscosity Gear Meter
Unit and an N-2995 Analog Electric Flow Gun.
This type of system is typically used on Automotive
Glass Bonding Applications where the Robot moves
the dispense tip around the glass (stationary
glass). The FACTS system dispenses the perfectly
consistent bead of urethane required all around
the glass, while the Robot varies the tip speed
through corners and along straight-a-ways in
order to minimize cycle time.
The FACTS technology is not limited to the use
of one type of metering unit. FACTS systems
can utilize any Hydraulic, Air or Electric Servo
Driven Positive Displacement Metering Unit as
the metering device. Coupled with one of Jesco’s
2 Analog Electric Flow Guns available, a FACTS
control panel and a PPCP package (proportional
pressure control package) for the supply pumps,
there is a FACTS system available for nearly
any dispensing application.
Jesco Model
N-3200 Series
Full Analog Control Tracking System (F.A.C.T.S.)
Constant Flow Rate Dispenser
The Jesco Model
N-3200 Series Full Analog Control
Tracking Systems are specifically
built for use in robotic dispensing systems,
where full analog flow control at the dispense
tip is required.
The patented
N-3200 Series Dispensers embody revolutionary
new dispensing technology in their design, construction
and control. Three basic system features are
required—the metering device, control panel
and servo driven gun.
This new technology
makes it possible for the dispenser to track
an analog output signal from a robot that is
proportional to flow rate required. It delivers,
without delay, a flow rate of material at the
tip proportional to the analog signal, with
full compensation for variable loads caused
by material characteristics that vary with respect
to time and temperature.
The N-3200 Series
Full Analog Control Tracking System Constant
Flow Rate Dispensers are available in several
different models within the series to suit specific
customer requirements.
- Hydraulic
or electric servo powered meters.
- Precision
tool steel gear pump meters.
- Single
or twin flow positive piston displacement
metering units.
- Conventional
or high viscosity material metering units.
- Flow
rate capabilities of up to 150 cubic inches
per minute at a maximum dispense pressure
of 5500 psi.
The CS-465 Control
Panel includes: a high performance stand alone
servo controller which controls the entire dispensing
system and interfaces the dispenser with the
robot/PLC through a pin receptacle; an operator
interface display and keyboard for displaying
warning, fault and status messages, as well
as allowing the operator to enter values for
tuning parameters and manual dispense flow rates;
manual operators and indicator lights for mode
selection; meter drive and gun servo motor amplifiers,
and isolation transformers for control and drive
power.
The N-2995 Analog
Dispense Gun is a brushless, servo motor driven,
ball screw actuated, snuff-back type spool valve.
Existing Jesco
Constant Flow Rate Dispensers can be converted
to the N-3200 Series Dispensing Systems. Information
on conversion packages is available upon request.
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