Numerical Representation; Symbols To Describe Parameter Properties - WEG CFW100 Programming Manual

GENERAL INFORMATION
to the inverter user manual.
400 V Line: Models powered from 380 to 480 Vac or 537 to 680 Vdc, for more information refer to the inverter
user manual.
DC Link: intermediary circuit of the inverter; voltage in direct current obtained by rectifying the power supply
alternate voltage or external supply; it supplies the output inverter bridge with IGBTs.
mA: miliampère = 0.001 Ampère.
min: minute; time unit.
ms: milisecond = 0.001 second.
Nm: Newton meter; torque unit.
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NTC: resistor whose resistance value in ohms decreases proportionally to the increase of the temperature; it is
used as a temperature sensor in power packs.
PE: Protective Earth.
PTC: resistor whose resistance value in ohms increases proportionally to the temperature; it is used as a
temperature sensor in motors.
PWM: pulse width modulation - modulation by pulse width; pulsed voltage that supplies the motor.
Rectifier: input circuit of the inverters 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; rotation unit.
s: second; time unit.
V: volts; electric voltage unit.
WPS: Programming Software "WEG Programming Suite".
Ω: ohms; electric resistance unit.

3.1.2 Numerical Representation

The decimal numbers are represented by means of digits without suffix. Parameters P012, P013, P045, P397
P680, P682, P684, P685, P690, P695, P697, P757, P758 and P840 are represented in hexadecimal numbers.

3.1.3 Symbols to Describe Parameter Properties

ro: read only parameter.
cfg: parameter that can be changed only with a stopped motor.
V/f: parameter available in the V/f mode.
VVW: parameter available in the VVW mode.
3-2 | Micro Mini Drives