Danfoss FC 300

(starts timing) at the edge of the start signal (when it changes
from stop to start). After each precise stop the number of pulses
counted during ramp down 0 rpm is reset.
[2] Counter stop without
reset
Same as [1] but the number of pulses counted during ramp
down to 0 rpm is deducted from the counter value in par. 1-84.
[3] Speed compensated
stop
Stops at precisely the same point, regardless of the present
speed, the stop signal is delayed internally when the present
speed is lower than the maximum speed (set in par. 4-19).
[4] Speed compensated
counter stop with re-
set
Same as [3] but after each precise stop the number of pulses
counted during ramp down 0 rpm is reset.
[5] Speed compensated
counter stop without
reset
Same as [3] but the number of pulses counted during ramp
down to 0 rpm is deducted from the counter value in par. 1-84.
This parameter cannot be adjusted while the motor is running.
1-84 Precise Stop
Range: Function:
100000
*
[0 - 999999999] Enter the counter value to be used in the integrated precise stop
function, par. 1-83.
The maximum permissible frequency at terminal 29 or 33 is 110
kHz.
1-85 Precise Stop Speed Compensation Delay
Range: Function:
10 ms
*
[1-100 ms] Enter the delay time for sensors, PLCs, etc. for use in par. 1-83
Precise Stop Function . In speed compensated stop mode, the
delay time at different frequencies has a major influence on the
stop function.
2.4.9. 1-9* Motor Temperature
Parameters for setting the temperature protection features for the motor.
1-90 Motor Thermal Protection
Option: Function:
The frequency converter determines the motor temperature for
motor protection in two different ways:
• Via a thermistor sensor connected to one of the analog
or digital inputs (par. 1-93
Thermistor Source ).
• 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
M,N
and the rated motor frequency
f
M,N
. The calculations estimate the need for a lower
load at lower speed due to less cooling from the fan
incorporated in the motor.
2. How to Programme FC 300 Programming Guide
58 MG.33.M2.02 - VLT
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is a registered Danfoss trademark
2