Danfoss FC 300 Programming Manual page 5

Introduction
Ref
MIN
Determines the relationship between the reference input at
0% value (typically 0V, 0mA, 4mA) and the resulting reference.
The minimum reference value set in par. 3-02 Minimum
Reference.
Miscellaneous:
Analog Inputs
The analog inputs are used for controlling various functions of
the frequency converter.
There are two types of analog inputs:
Current input, 0-20 mA and 4-20 mA
Voltage input, 0-10 V DC (FC 301)
Voltage input, -10 - +10 V DC (FC 302).
Analog Outputs
The analog outputs can supply a signal of 0-20 mA, 4-20 mA.
Automatic Motor Adaptation, AMA
AMA algorithm determines the electrical parameters for the
connected motor at standstill.
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 Operation Mode), the
frequency converter returns to the default setting.
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
FC 300 Programming Guide
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 Control 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 applica-
tions 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 Switching Pattern).
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.
Smart Logic Control (SLC)
The SLC is a sequence of user defined actions executed when
the associated user defined events are evaluated as true by
the Smart Logic Controller. (Par. group 13-** Smart Logic
Control (SLC).
STW
Status Word
FC Standard Bus
Includes RS 485 bus with FC protocol or MC protocol. See
par. 8-30 Protocol.
Thermistor:
A temperature-dependent resistor placed where the tempera-
ture is to be monitored (frequency converter or motor).
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
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