Danfoss VLT 5000 FLUX Operating Instructions Manual page 7

Miscellaneous- continued
Abbreviations/Definitions
ED
ELCB
ETR
Flux Vector
Incremental encoder
Initializing
KTY
LCP
Manual initialisation
MCM
NEC
NTC
On-line/off-line parameters
OP
OVC
PELV
ppr
RPM
Thermistor
Trip
Trip locked
MG.55.A6.02 - VLT is a registered Danfoss trademark
Duty cycle
Earth Leakage Circuit Breaker
Electronic thermal relay is a thermal load calculation based on present load and
time. Its purpose is to estimate the motor temperature
If compared with standard voltage/frequency ratio control, Flux Vector improves
the dynamics and the stability, both when the speed reference is changed and
in relation to the load torque
An external, digital pulse transmitter used for feeding back information on motor
speed. The encoder is used in applications where high accuracy in speed control
is required
If initializing is carried out (see parameter 620), the frequency converter returns to
the factory setting
Semiconductor temperature sensor
The Local Control Panel, which makes up a complete interface for control and
programming of the frequency converter. The control panel is detachable and
may, as an alternative, be installed up to 3 metres away from the frequency
converter, ie. in a front panel, by means of the installation kit option
Press the [CHANGE DATA] + [MENU] + [OK] keys at the same time as power-up
to carry out manual initialisation. See also Parameter 620.
Note that manual initialisation is only to be used if the reset function does not work!
Stands for Mille Circular Mil, an American measuring unit for cable cross-section
2
1 MCM=0.5067mm
National Electrical Code
Negative Temperature Coefficient resistor
On-line parameters are activated immediately after the data value is changed.
Off-line parameters are not activated until OK has been entered on the control unit
Open Loop
Over Voltage Control
Protective Electrical Low Voltage. According to EN 50178
Puls per revolutions
Revolutions per minute
A temperature-dependent resistor placed where the temperature is to be
monitored (VLT or motor)
A state which occurs in different situations, eg. if the frequency converter is
subject to a live zero warning. A trip can be cancelled by pressing Reset
A state which occurs in different situations, eg. if the frequency converter is
subject to an overtemperature. A locked trip can be cancelled by cutting off
mains and restarting the frequency converter and pressing Reset
®
VLT 5000 FLUX
Description
7