Danfoss VLT AutomationDrive FC 360 Programming Manual page 11

Introduction
Power cycle
Switch off the mains until display (LCP) is dark – then turn
power on again.
Power factor
The power factor is the relation between I
x U x I 1 cos ϕ
3
Power factor =
3 x U x IRMS
The power factor for 3-phase control:
I 1 x cos ϕ1 I 1
since cos ϕ1 = 1
= =
IRMS IRMS
The power factor indicates to which extent the frequency
converter imposes a load on the mains supply.
The lower the power factor, the higher the I
same kW performance.
IRMS = I 1 2 + I 5 2 + I 7 2 + .. + I n 2
In addition, a high power factor indicates that the different
harmonic currents are low.
The frequency converters' built-in DC coils produce a high
power factor, which minimises the imposed load on the
mains supply.
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
Save parameter settings in 2 set-ups. Change between the
2 parameter set-ups and edit one 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.
MG06C402
Programming Guide
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. (Parameter group 13-**
Smart Logic Control (SLC).
and I .
1 RMS
STW
Status Word
THD
Total Harmonic Distortion states the total contribution of
harmonic.
Thermistor
A temperature-dependent resistor placed where the
for the
RMS
temperature is to be monitored (frequency converter or
motor).
Trip
A state entered in fault situations, e.g. if the frequency
converter is subject to an overtemperature or when the
frequency converter 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.
Trip locked
A state entered in fault situations when the frequency
converter is protecting itself and requiring physical
intervention, e.g. if the frequency converter is subject to a
short circuit on the output. A locked trip can only be
cancelled by cutting off mains, removing the cause of the
fault, and reconnecting the frequency converter. Restart is
prevented until 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.
VT characteristics
Variable torque characteristics used for pumps and fans.
VVC +
If compared with standard voltage/frequency ratio control,
Voltage Vector Control (VVC
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 (14-00 Switching Pattern).
Danfoss A/S © Rev. 2014-03-31 All rights reserved.
+
) improves the dynamics and
1 1
9