Danfoss VLT AutomationDrive FC 300 Programming Manual page 8

FC 300 Programming Guide
Brake Resistor
The brake resistor is a module capable of absorbing the brake power generated in regenerative braking. This regenerative braking power increases the
intermediate circuit voltage and a brake chopper ensures that the power is transmitted to the brake resistor.
CT Characteristics
Constant torque characteristics used for all applications such as conveyor belts, displacement pumps and cranes.
Digital Inputs
The digital inputs can be used for controlling various functions of the frequency converter.
Digital Outputs
The frequency converter features two Solid State outputs that can supply a 24 V DC (max. 40 mA) signal.
DSP
Digital Signal Processor.
ETR
Electronic Thermal Relay is a thermal load calculation based on present load and time. Its purpose is to estimate the motor temperature.
Hiperface ®
Hiperface ® is a registered trademark by Stegmann.
Initialising
If initialising is carried out (par. 14-22
Intermittent Duty Cycle
An intermittent duty rating refers to a sequence of duty cycles. Each cycle consists of an on-load and an off-load period. The operation can be either
periodic duty or non-periodic duty.
LCP
The Local Control Panel makes up a complete interface for control and programming of the frequency converter. The control panel is detachable and can
be installed up to 3 metres from the frequency converter, i.e. in a front panel by means of the installation kit option.
lsb
Least significant bit.
msb
Most significant bit.
MCM
Short for Mille Circular Mil, an American measuring unit for cable cross-section. 1 MCM = 0.5067 mm
On-line/Off-line Parameters
Changes to on-line parameters are activated immediately after the data value is changed. Changes to off-line parameters are not activated until you enter
[OK] on the LCP.
Process PID
The PID control maintains the desired speed, pressure, temperature, etc. by adjusting the output frequency to match the varying load.
PCD
Process Data
Power Cycle
Switch off the mains until display (LCP) is dark – then turn power on again
Pulse Input/Incremental Encoder
An external, digital pulse transmitter used for feeding back information on motor speed. The encoder is used in applications where great accuracy in
speed control is required.
RCD
Residual Current Device.
Set-up
You can save parameter settings in four Set-ups. Change between the four parameter Set-ups and edit one Set-up, while another Set-up is active.
SFAVM
Switching pattern called Stator Flux oriented Asynchronous Vector Modulation (par. 14-00
Slip Compensation
The frequency converter compensates for the motor slip by giving the frequency a supplement that follows the measured motor load keeping the motor
speed almost constant.
Operation Mode
), the frequency converter returns to the default setting.
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
2 .
Switching Pattern
).
1 Introduction
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