Danfoss VLT AutomationDrive FC 300 Design Manual page 11

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References
Analog Reference
An analog signal applied to input 53 or 54. The signal can
be either Voltage 0-10V (FC 301 and FC 302) or -10 to
+10V (FC 302). Current signal 0-20 mA or 4-20 mA.
Binary Reference
A signal applied to the serial communication port (RS-485
term 68–69).
Preset Reference
A defined preset reference to be set from -100% to +100%
of the reference range. Selection of eight preset references
via the digital terminals.
Pulse Reference
A pulse reference applied to term 29 or 33, selected in
5-13 Terminal 29 Digital Input or 5-15 Terminal 33 Digital
Input [32] Pulse time based. Scaling in parameter group 5-5*
Pulse input.
Ref
MAX
Determines the relationship between the reference input
at 100% full scale value (typically 10 V, 20 mA) and the
resulting reference. The maximum reference value set in
3-03 Maximum Reference.
Ref
MIN
Determines the relationship between the reference input
at 0% value (typically 0 V, 0 mA, 4 mA) and the resulting
reference. The minimum reference value set in
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, 0-20mA and 4-20mA
Voltage input, 0-10 V DC (FC 301)
Voltage input, -10 to +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.
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VLT AutomationDrive FC 300 Design Guide, 0.25-75 kW
Digital Outputs
The frequency converter features two solid state outputs
for FC 302 and one solid state output for FC 301. They 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
Initialising
If initialising is carried out (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
metres from the frequency converter, i.e. in a front panel
by means of the installation kit option.
NLCP
Numerical Local Control Panel interface for control and
programming of frequency converter. The display is
numerical and the panel is basically used for display
process values. The NLCP has no storing and copy
function.
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. Press [OK] to activate
changes to off-line parameters.
Process PID
The PID regulator maintains the desired speed, pressure,
temperature, etc. by adjusting the output frequency to
match the varying load.
PCD
Process Data
Pulse Input/Incremental Encoder
An external digital sensor used for feedback information of
motor speed and direction. Encoders are used for high
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