Danfoss VLT 380-500 V Design Manual page 164

Appendix
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 is set in
parameter 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 is set in
parameter 3-02 Minimum Reference.
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 (parameter 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.
Start-disable command
A stop command belonging to the group 1 control
commands.
Stop command
See control commands parameter group.
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 canceled by pressing
[Reset] or, sometimes, by being programmed to reset
automatically. Do not use trip for personal safety.
18 18
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 enters trip lock.
A locked trip can only be canceled by cutting off mains,
162
®
VLT Parallel Drive Modules
removing the cause of the fault, and reconnecting the
frequency converter.
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.
Danfoss A/S © 6/2016 All rights reserved.
+
) improves the dynamics and
MG37N102