Asymtek Century C-721 Series, Operation Manual

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Glossary-3
Non-Recoverable Interlock Condition
: Should this condition occur, you must completely exit the dispensing software program,
restart the dispensing software, and reopen the program in order to continue.
Operator
: A person running pre-programmed dispensing systems and performing routine maintenance.
Opto-Coupled
: An electrical device that uses light to send information.
Outputs
: Electrical signals to control devices that must turn On and Off on command.
Part
: The target for a dispensing operation, such as a PCB, Auerboat or leadframe. Also called a “board” or “workpiece.”
Pattern
: A command or set of commands that use fiducials for dispensing lines, dots, etc.
Pattern Recognition System
: The Pattern Recognition System (PRS), incorporating a vision processing card, automatically
corrects for workpiece misalignment (or “skew”). Working with the dispensing system FmNT software, the PRS allows you to
teach fiducial points, select pattern type of edge detection or grayscale, and specify different light levels for each fiducial.
PCB
: Printed Circuit Board.
PID
: Proportional-Integral-Derivative. The type of controller present in the 4- and 8-channel temperature controller installed in
the dispensing system.
PLC
: Programmable Logic Controller. Controls all vacuum system elements (Auto Mode or Manual Mode) and the conveyor
(Auto Mode).
Pneumatic Devices
: Air pressure actuated devices such as: stop pins, clamp bars and lifter tables.
Port
: Any machine connection that allows for the exchange of electrical communication signals.
Post-Dispense Zone
: The part of the dispensing area where a part is held after it leaves the dispense zone and before the part
leaves the system. The part may be heated in the post-dispense zone, but no dispensing is performed.
Pot Life
: The period of time during which an epoxy, once thawed, is usuable.
Potentiometer
: an instrument that measures electromotive force or potential difference by comparing a part of the voltage to be
measured against a known electromotive force.
Pre-Dispense Zone
: The part of the dispensing area where a part is held before entering the dispense zone. The part may be
heated in the pre-dispense zone, but no dispensing is performed.
Process Engineer
: A technical level position. The Process Engineer designs and develops processes for automated electronic
packaging using production line equipment.
Production Operator
: A non-technical level position. The production operator monitors and operates pre-programmed
dispensing systems during production runs and performs minor routine maintenance.
Production Shutdown
: When all dispensing has stopped.
psi
: Pressure measured in pounds per square inch (lbs/in2).
See
kPa.
Purge Station
: A location on the dispensing system where a suction is applied to the needle tip forcing the fluid to flow. A
plastic cup inside of the purge station catches the fluid.
Regulator
: Device for controlling the amount of air pressure supplied to the system.
RTD
: Resistance Temperature Detector. A wire coil or deposited film of pure metal, typically platinum. The element’s resistance
increases with temperature in a known and repeatable manner.
Safety Interlock System
: A key activated device used to restrict access to the inside of the dispensing system.
Safety Standard En60204
: European Common Market safety standards.
Safe Z Height
: The height that the dispensing head can be raised to without impacting other fixtures or parts on the PCB when
moving.
SCFM
: Standard Cubic Feet per Minute.
SECSII/GEM
: SEMI Equipment Communication Standard (SECS)/SEMI Generic Equipment Model for Effective Factory
Automation (GEM). SECS/GEM is the protocol used in cases where several factory equipment units are linking together via a
Host Computer. The GEM standard defines useful conventions for designing the communications interface on a unit of factory
equipment to improve operations with a Host Computer.
SEMI
: Semiconductor Equipment and Materials International. An organization which defines protocols for the semiconductor
industry.
Service Shutdown
: When all dispensing is stopped to perform machine service.