User`s guide

GLOSSARY OF TERMS
Fiducial
A point of reference designed into a part or fixture that can be used to determine part or workpiece shift. This point is often
used as the “Origin” point in a program.
Jogging
Refers to moving the EFD
®
TT series axes to teach either points or offsets. Jogging is accomplished by using the hard keys
on the Palm handheld, the compass rose or blue field in the Jog window, and the front panel arrow buttons.
Mechanical Home
This is when all axes have returned to their travel origination points. This is determined by the location of the homing
sensors. The EFD
®
TT is at mechanical home when the Z-axis is all the in the up position, X-axis is all the way to the left
most position and the Y-axis is all the way to the back of the machine.
Dispensing Tip Offsets
This refers to the delta (change) in X/Y/Z of the dispensing tip when the tip has been removed and replaced with a new one.
It is important that you teach the new tip position so the EFD
®
TT can accurately dispense your fluid.
Soft Key
Soft keys are software dependent and are designated by a highlighted function for the dome switch immediately below the
command on the LCD Screen located on the front panel.
Current
Defined as flow from the positive terminal of the power supply to the negative terminal.
Ground
The negative terminal of the power supply
Driver
Controls the current in another electronic circuit (the load). A driver is considered to be ON when it allows current to flow in
its load. A driver is considered to be OFF when it does not allow current to flow in its load. A driver may be a bipolar
transistor or a Field Effect transistor. Opto-isolated devices are preferred. A driver may also be a mechanical switch or,
preferably, an isolated relay contact.
Load
Any component or arrangement of several components that conducts current, when a driver is placed in an “ON” condition.
The input circuitry of the EFD
®
TT is considered to be a load for external driver circuitry. The input circuits of external circuitry
are considered to be loads for the output drivers of the EFD
®
TT.
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www.nordsonefd.com [e-mail] USA & Canada 800-556-3484 Europe [phone] Asia [phone]
Sales and service of Nordson EFD dispensing systems are available worldwide.
EFD
®
TT User's Guide
Version 1.2