Danfoss VLT AutomationDrive FC 300 Programming Manual page 60

FC 300 Programming Guide
[4] Com cnt stop w/rst
[5] Comp cnt stop w/o r
This parameter cannot be adjusted while the motor is running.
1-84 Precise Stop Counter Value
Range:
100000* [0 - 999999999 ]
1-85 Precise Stop Speed Compensation Delay
Range:
10 ms* [0 - 100 ms]
3.3.9 1-9* Motor Temperature
Parameters for setting the temperature protection features for the motor.
1-90 Motor Thermal Protection
Option:
[0] * No protection
[1] Thermistor warning
[2] Thermistor trip
[3] ETR warning 1
[4] ETR trip 1
[5] ETR warning 2
[6] ETR trip 2
[7] ETR warning 3
[8] ETR trip 3
[9] ETR warning 4
[10] ETR trip 4
Same as [3] but after each precise stop the number of pulses counted during ramp down 0 rpm is
reset.
Same as [3] but the number of pulses counted during ramp down to 0 rpm is deducted from the
Precise Stop Counter Value
counter value in par. 1-84
Function:
Enter the counter value to be used in the integrated precise stop function, par. 1-83
Function .
The maximum permissible frequency at terminal 29 or 33 is 110 kHz.
Function:
Enter the delay time for sensors, PLCs, etc. for use in par. 1-83
compensated stop mode, the delay time at different frequencies has a major influence on the stop
function.
Function:
The frequency converter determines the motor temperature for motor protection in three different
ways:
• Via a thermistor sensor connected to one of the analog or digital inputs (par. 1-93
mistor Source
). See section
• Via a KTY sensor connected to an analog input (par. 1-96
KTY Sensor Connection
section
• Via calculation (ETR = Electronic Terminal Relay) of the thermal load, based on the actual
load and time. The calculated thermal load is compared with the rated motor current
I and the rated motor frequency f
M,N
load at lower speed due to less cooling from the fan incorporated in the motor.
Continuously overloaded motor, when no warning or trip of the frequency converter is required.
Activates a warning when the connected thermistor or KTY-sensor in the motor reacts in the event
of motor over-temperature.
Stops (trips) frequency converter when connected thermistor or KTY sensor in the motor reacts in
the event of motor over-temperature.
The thermistor cut-out value must be > 3 kΩ.
Integrate a thermistor (PTC sensor) in the motor for winding protection.
Please see detailed description below
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
3 Parameter descriptions
.
Precise Stop Function
PTC Thermistor Connection
.
KTY Thermistor Resource
.
. The calculations estimate the need for a lower
M,N
3
Precise Stop
. In speed
Ther-
). See
59