Manual

Glossary G-3
Home: The dispense head location whose X, Y, Z
location is defined as the coordinates (0,0,0). The
default setting is where the Dispensing Head was
located when the system was first turned on. On
Asymtek systems, the default home position is the front
left hand corner of the dispensing chamber. For the
Conveyor, home is when the rear rail moves to the back
of the dispensing area.
I/O: Input/Output. Communication between one
component or device and another.
Icons: Small buttons on a Computer screen with a
symbol representing the function that they perform.
Used to execute a menu shortcut.
Integrated Safety Systems: Built-in safety system that
automatically prevents injury and damage resulting from
Dispensing Head and Conveyor movement. The
Integrated Safety Systems consist of an Interlock
Keyswitch, Interlock Door Sensors or Light Curtain,
Interlock Recovery Light, Status Indictor Lights, and a
Light Beacon.
Interlock Door Sensors: The Interlock Door Sensors
detect the door status (open or closed). On systems with
the Light Curtain, an emitter and receiver detect
obstructions.
Interlock Keyswitch: The Interlock Keyswitch is
located on the Control Panel and is designed to restrict
access to the inside of the dispensing system, based on
user-defined levels of operation. It has two modes: ON
and OFF.
Interlock Recovery Light: Located on the Control
Panel and labeled Interlock Recovery. When the light is
ON, you can safely access the inside of the dispensing
area. When the light is OFF, accessing the inside of the
dispensing area will cause a non-recoverable interlock
shutdown to occur.
Jet: A FmNT-controlled type of Dispensing Valve, such
as the DJ-2200, that dispenses fluid using a
pneumatically actuated piston/needle mechanism. A
built-in heater warms the fluid to stabilize fluid
viscosity. Dispenses fluid as small dots.
Jet on the Fly: Asymtek’s fastest jetting method. With
“Jet on the Fly” (JOF) technology, the DispenseJet
pump can dispense lines of dots “on the fly” (without
stopping).
Keepout Zones: User-defined areas that are off limits
for Dispensing Head travel. Keepout Zones are defined
in the FmNT software.
kPa: Kilo Pascals. Metric unit of pressure measurement.
Lead Frame: A type of part handler where multiple
parts are imbedded in a metal tape.
LCD: Liquid Crystal Display. This type of display is
used in the Computer Monitor.
LED: Light-Emitting-Diode. A semiconductor that
emits light. The materials used in the diode determine
the color of light. Functions as a system status indicator
and as an element in the Camera light source.
Levelers: Four adjustable pedestals (feet) on the bottom
of the dispensing system.
Lift Height: The height that the workpiece is lifted by
the Lift Table at the dispense station of the Conveyor.
Light Beacon: A safety device with colored lights and
an audible alarm that is attached to the top of a
dispensing system. Colored lights and an audible alarm
indicate machine status. Part of the Integrated Safety
Systems.
LLHC: Lower left hand corner.
Load Cell: A sensor located on Model NSZ needle
sensors that is used as a touch point for substrate height
measurements. The needle sensor probe touches down
on the tactile sensor, which records the value
(Automatic Height Sensor Calibration).
Local Machine Offsets: For factories that run the same
FmNT dispensing program on multiple machines, the
goal is to have one “golden” program. Because no two
machines perform exactly alike, in order for a program
written on one machine to perform the same on another
machine, some correction or calibration is required.
Local Machine Offsets (LMO) is a group of three
features that help obtain the goal of one “golden”
program.
LRHC: Lower right hand corner.
Main Power Inlet: The Main Power Inlet connects the
Main Power cable from the facility power source to the
dispensing system.
Main Program: The Main Program is a set of
commands usually hidden from the Programming
Window. The Main Program begins and ends the
program and contains:
• Comments about program flow
• Mode Setting Instructions
• Process Instructions
• User Added Setup Processes
• Workpiece Pattern Call
• Program End Command
Maintenance: Planned or unplanned activities intended
to keep the dispensing system in good working order.
Mass Flow Calibration: See Flow Rate Calibration.
Material Safety Data Sheet (MSDS): Information
sheet for the safe usage of a specific material. It is
provided by the material manufacturer and is usually
included in the material packaging.
Message Areas: In a Windows program, these are areas
or boxes that contain information for the operator.
Mil: One thousandths on an inch, or 1 x 10
-3
inches.