WEG CFW-11 Programming Manual page 44

General Information
Braking IGBT: Operates as a switch for the activation of the braking resistor. It is commanded by the DC Link
level.
PTC: It's a resistor whose resistance value in ohms increases proportionally to the increase of the temperature;
it is used as a temperature sensor in motors.
NTC: It's a resistor whose resistance value in ohms decreases proportionally to the temperature increase; it is
used as a temperature sensor in power modules.
Keypad (HMI): Human-Machine Interface; It is the device that allows the control of the motor, the visualization
and the modification of the inverter parameters. It presents keys for commanding the motor, navigation keys
2
and a graphic LCD display.
MMF (Flash Memory Module): It is the nonvolatile memory that can be electrically written and erased.
RAM Memory: Random Access Memory (volatile).
USB: "Universal Serial Bus"; it is a type of connection in the perspective of the "Plug and Play" concept.
PE: "Protective Earth".
RFI Filter: "Radio Frequency Interference Filter". It is a filter that avoids interference in the radiofrequency
range.
PWM: "Pulse Width Modulation". It is a pulsing voltage that supplies the motor.
Switching Frequency: It is the inverter bridge IGBTs commutation frequency, specified normally in kHz.
General Enable: When activated, it accelerates the motor with the acceleration ramp provided Run/Stop=Run.
When deactivated, the PWM pulses are immediately blocked. It can be commanded through digital input
programmed for that function or via serial.
Run/Stop: Inverter function that when activated (Run) accelerates the motor with the acceleration ramp until
reaching the speed reference, and when deactivated (Stop) decelerates the motor with the deceleration ramp
down to stop. It can be commanded through digital input programmed for that function or via serial. The HMI
keys and
=Run,
Heatsink: It is a metal part designed for dissipating the heat generated by the power semiconductors.
Amp, A: Ampere.
°C: Degrees Celsius.
AC: Alternating Current.
DC: Direct Current.
2-2
work in a similar manner:
=Stop.