Danfoss VLT AutomationDrive FC 300 Design Manual page 14

How to Read this Design Gui...
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msb
Most significant bit.
NLCP
Numerical local control panel LCP101.
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 [OK] is entered on the
LCP.
PID Controller
The PID controller maintains the desired speed, pressure
and temperature 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-
speed accuracy feedback and in high dynamic applications.
The encoder connection is either via terminal 32 or
encoder option MCB 102.
RCD
Residual Current Device. A device that disconnects a circuit
in case of an imbalance between an energised conductor
and ground. Also known as a ground fault circuit
interrupter (GFCI).
Set-up
Parameter settings can be saved in 4 set-ups. Change
between the 4 parameter set-ups and edit 1 set-up, while
another set-up is active.
SFAVM
Switching pattern called Stator Flux oriented Asynchronous
Vector Modulation (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 SLC.
STW
Status word.
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VLT AutomationDrive FC 300 Design Guide 90-1200 kW
Thermistor:
A temperature-dependent resistor placed where the
temperature is monitored (frequency converter or motor).
THD
Total Harmonic Distortion. A state of full harmonic
distortion.
Trip
A state entered in fault situations. For example, if the
frequency converter is subject to an overtemperature or
when it is protecting the motor, process, or mechanism.
Restart is prevented until the cause of the fault has
disappeared and the trip state is cancelled by activating
Reset or, in some cases, by being programmed to reset
automatically. Do not use trip for personal safety.
Trip Locked
A state entered in fault situations when the frequency
converter is protecting itself and requires physical
intervention. For example, if the frequency converter is
subject to a short circuit on the output, it will enter trip
lock. A locked trip can only be cancelled by cutting off
mains, removing the cause of the fault, and reconnecting
the frequency converter.
VT Characteristics
Variable torque characteristics used for pumps and fans.
plus
VVC
If compared with standard voltage/frequency ratio control,
Voltage Vector Control (VVC
and the stability, both when the speed reference is
changed and in relation to the load torque.
60° AVM
Switching pattern called 60°Asynchronous Vector
Modulation (See 14-00 Switching Pattern).
MG34S202 - Rev. 2013-08-19
plus ) improves the dynamics