WEG CFW-11 User Manual page 14

General Instructions
HMI - Human Machine Interface: it is a device that allows the motor control, and the visualization and
modification of the inverter parameters. The CFW-11 HMI presents keys for the motor command, navigation
keys and a graphic LCD display.
FLASH Memory: non-volatile memory that can be electronically written and erased.
RAM Memory: random access memory (volatile).
USB: universal serial bus; is a serial bus standard that allows devices to be connected using the "Plug and Play" concept.
General Enable: when activated, this function accelerates the motor via acceleration ramp set in the inverter.
When deactivated, this function immediately blocks the PWM pulses. The general enable function may be
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controlled through a digital input set to this function or via serial communication.
Start/Stop: when enabled in the inverter (start), this function accelerates the motor via acceleration ramp up
to the speed reference. When disabled (stop), this function decelerates the motor via deceleration ramp up to
the complete motor stop; at this point, the PWM pulses are blocked. The start/stop function may be controlled
through a digital input set for this function or via serial communication. The operator keys (Start) and
(Stop) of the keypad work in a similar way.
STO: safe torque off; functional safety function available as an option in CFW-11 inverter series. When STO
function is enabled the inverter guarantees that there is no movement of the motor shaft. It's also called safety
stop function in CFW-11 documentation.
PLC: programmable logic controller.
TBD: value to be defined.
AC: alternated current.
DC: direct current.
Amp, A: ampères.
°C: celsius degree.
CFM: cubic feet per minute; unit of flow.
cm: centimeter.
°F: fahrenheit degree.
Hz: hertz.
ft: foot.
hp: horse power = 746 Watts; unit of power, used to indicate the mechanical power of electrical motors.
in: Inch.
kg: kilogram = 1000 grams.
CFW-11 | 2-3