WEG SCA06 User Manual - page 12
2
General Information
2-2 | SCA06
Hz: hertz.
IGBT: Insulated Gate Bipolar Transistor - basic component part of the output inverter bridge. It works as an
electronic switch in the saturated (closed switch) and cut-off (open switch) modes.
Braking IGBT: it works as a switch to turn on the braking resistor. It is automatically controlled by the DC busbar
level.
in: inch, unit of length equivalent to 25.4 mm.
kg: kilogram = 1000 grams.
kHz: kilohertz = 1000 hertz.
mA: milliampere = 0.001 ampere.
MC: Motion Control.
FLASH Memory: non-volatile memory that may be electrically written and erased.
RAM Memory: random access memory. Characterized for being volatile, that is, it loses the data when the servo
drive is shut down.
min: minute.
mm: millimeter, unit of length equivalent to 0.039 inch
ms: millisecond = 0.001 second.
N.m: newton meter; unit of torque.
NTC: resistor whose resistance value in Ohms decreases proportionally to the increase of the temperature; used
as temperature sensor in power packs.
PE: protective earth.
PTC: resistor whose resistance value in Ohms increases proportionally to the temperature; used as temperature
sensor in servomotors.
PWM: pulse width modulation - modulation by pulse width; pulsed voltage that supplies the servomotor.
Rectifier: input circuit of the servo drives that transforms the input AC voltage into DC. It is formed by high-power
diodes.
RMS: root mean square - effective value.
rpm: revolutions per minute.
s: second.
USB: universal serial bus - type of serial communication interface designed to operate according to the
plug-and-play concept.
V: volts.
Ω: ohms.