FEC MICRO NR - Manual (Page 17)

FEC Micro Nutrunner Operations Manual Chapter 1: Outline (Rev. 2: 02/12)
Page 1-3
1.2 Features
{ The MICRO NR Fastening System is a culmination of over thirty years of electric fastening
expertise integrated with the latest miniature electronic technology. For small screw
applications
(M2 – M3), the MICRO NR provides a highly accurate, transducerized fastening system with
fully programmable set-up. The system is designed with modular construction in mind keeping
maintenance and spare parts to a minimum.
{ The basic elements of this system are:
1) A brushless, Resolver Based permanent magnet high speed motor
2) Reliable intelligent Torque Transducer
3) A combination Fastening Controller / Digital Servo Amplifier (MNR unit)
{ { { { Compact Design
As the result of miniaturization circuit technology, the compact MNR units (Controller)
maintain a size not much bigger than a standard letter envelope in spite of the built-in power
source and Servo Amplifier. The MNR Unit can be back / side panel mounted.
{ { { { Front Keypad-Display.
A front keypad display is used for programming preset parameters and/or monitoring the
fastening results and status conditions in the system.
{ { { { Multiple Condition Display
The system features a multi-colored LED that lights to indicate the status of the System.
{ { { { Parameter Selection
Totally digitized system eliminates analog potentiometers.
Up to 8 different sets of parameters can be stored into Flash ROM for each spindle.
No battery-backup of memory is required.
{ { { { Motor
A high speed, permanent magnet DC motor provides for improved fastening control. The
sealed design of the motor provides greater protection from contamination without generating
excess heat.
The resolver is uniquely designed to withstand harsh environments and provide
high resolution control / angular feedback signals .
{ { { { Preamplifier
Quality control of the tool torque transducer is accomplished electronically (digitally) through
the EEPROM (Electrically Erasable Programmable Read Only Memory) in the preamplifier.
During factory setup of the torque transducer, the unit is Dead Weight and dynamically tested
against Standards that are certified and traceable to the National Institute of Standards and
Technology. The resultant data is then programmed into the preamplifier where it is stored
on non volatile EEPROM.
{ { { { Servo Amplifier (Servo Drive)
Reduced equipment size with improved drive circuit strength is the result of incorporating
Insulated Gate Bipolar Transistor (IGBT) technology into the drive System.
{ Motor, Resolver and Torque Transducer Combined Single Cable
A combined cable reduces the number of cables in the system and provides easier cable
management