Danfoss FC 300 Design Manual page 10

FC 300 Design Guide
How to Read this Design Guide
LCP
The Local Control Panel (LCP) makes up a complete interface for control and programming of the FC
300 Series. The control panel is detachable and can be installed up to 9.8 ft (3 meters) from the
adjustable frequency drive, i.e. in a front panel by means of the installation kit option.
lsb
Least significant bit.
MCM
Short for Mille Circular Mil, an American measuring unit for cable cross-section.
1 MCM ≡ 0.00079 in. 2 (0.5067 mm 2 ).
msb
Most significant bit.
Online/Offline Parameters
Changes to online parameters are activated immediately after the data value is changed. Changes
to offline parameters are not activated until you enter [OK] on the LCP.
Process PID
The PID regulator maintains the desired speed, pressure, temperature, etc. by adjusting
the output frequency to match the varying load.
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 S tator F lux oriented A synchronous V ector M odulation (par. 14-00).
Slip Compensation
The adjustable frequency drive 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.
Thermistor:
A temperature-dependent resistor placed where the temperature is to be monitored
(adjustable frequency drive or motor).
Trip
A state entered in fault situations, e.g. if the adjustable frequency drive is subject to an over-temperature or
when the adjustable frequency drive 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. Trip may not be used for personal safety.
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MG.33.B6.22 - VLT is a registered Danfoss trademark