Danfoss VLT HVAC Basic Drive FC 101 Programming Manual page 32

Parameters
1-82 Min Speed for Function at Stop [Hz]
Range:
0 Hz [0 - 20 Hz] Set the output frequency at which to
*
3 3
1-90 Motor Thermal Protection
Option:
[0] No
protection
[1] Thermistor
warning
[2] Thermistor
trip
[3] ETR warning
1
[4] ETR trip 1
1-93 Thermistor Source
Option:
[0] None
*
[1] Analog
input AI53
[6] Digital
input DI29
30
VLT
Function:
activate 1-80 Function at Stop.
Function:
Using ETR (Electronic Thermal Relay), the
motor temperature is calculated based on
frequency, speed and time. Danfoss
recommends using the ETR function, if a
thermistor is not present. The functionality is
the same for asynchronous motors and PM
motors.
NOTICE
ETR calculation is based on motor data
from group 1-2* Motor Data.
Disables temperature monitoring.
A thermistor gives a warning if upper limit of
motor temperature range is exceeded,
A thermistor gives an alarm and makes the
frequency converter trip if upper limit of
motor temperature range is exceeded.
If calculated upper limit of motor temperature
range is exceeded, a warning occurs.
If 90% of calculated upper limit of motor
temperature range is exceeded, an alarm
occurs and frequency converter trips.
Function:
NOTICE
This parameter cannot be adjusted
while the motor is running.
NOTICE
Digital input should be set to [0] PNP -
Active at 24 V in 5-03 Digital Input 29
Mode.
Select the input which the thermistor (PTC
sensor) should be connected. When using an
analog input, the same analog cannot be used
as a reference in 3-15 Reference Resource 1 to
3-17 Reference Resource 3.
®
HVAC Basic Drive FC 101 Programming Guide
MG18B302 - Rev. 2013-09-02