4.2.6. 1-8* Stop Adjustments
To meet the need for various stop functions in different application these parameters offer some
special stop features for the motor.
1-80 Function at Stop
Option: Function:
The selected function at stop is active in following situations:
• Stop command is given and output speed is ramped
down to
Min. Speed for Activating Functions at Stop
.
• Start command is removed (standby), and output
speed is ramped down to
Min. Speed for Activating
Functions at Stop
.
• DC-brake command is given, and DC-brake time has
passed
• While running and calculated output speed is below
Min. Speed for Activating Functions at Stop
.
[0]
*
Coast The inverter is coasted.
[1] DC hold The motor is energized with a DC current. See par. 2-00
DC Hold
Current
for more information.
1-82 Min. Speed For Function at Stop [Hz]
Range: Function:
0.0 Hz
*
[0.0 - 20.0 Hz] Set the speed at which to activate par. 1-80
Function at Stop
.
4.2.7. 1-9* Motor Temperature
With an estimated motor temperature monitor the frequency converter is able to estimate motor
temperature without having a thermistor mounted. It is thus possible to receive a warning or an
alarm, if motor temperature exceeds upper operational limit.
1-90 Motor Thermal Protection
Option: Function:
Using ETR (Electronic Terminal Relay) the motor temperature is
calculated based on frequency, speed and time. Danfoss rec-
ommends using The ETR function, if a thermistor is not present.
NB!
ETR calculation is based on motor data from group
1-2*.
[0]
*
No Protection Disables temperature monitoring.
[1] Thermistor Warning A thermistor connected to either digital or analog input gives a
warning if upper limit of motor temperature range is exceeded,
(see par. 1-93,
Thermistor Resource)
.
VLT Micro Drive FC 51 4. Parameter Descriptions
MG.02.C2.02 - VLT
®
is a registered Danfoss trademark
25
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