Motor Temperature; Precise Stop Counter Value; Precise Stop Speed Compensation Delay; Motor Thermal Protection - Danfoss VLT AutomationDrive Programming Manual

Parameter Descriptions

1-84 Precise Stop Counter Value

Range:
100000 [0 - 999999999 ] Enter the counter value to be used
*
3 3

1-85 Precise Stop Speed Compensation Delay

Range:
10 ms [0 - 100
*
ms]

3.3.9 1-9* Motor Temperature

1-90 Motor Thermal Protection

Option:
3-24
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FC 300 Programming Guide
Function:
in the integrated precise stop
function, 1-83 Precise Stop Function.
The maximum permissible frequency
at terminal 29 or 33 is 110kHz.
Not used for selection [0] and [3] in
1-83 Precise Stop Function
Function:
Enter the delay time for sensors, PLCs, etc.
for use in 1-83 Precise Stop Function. In
speed compensated stop mode, the delay
time at different frequencies has a major
influence on the stop function.
Not used for selection [0], [1] and [2] in
1-83 Precise Stop Function
Function:
Thermal motor protection can be
implemented using a range of techniques:
•
Via a PTC sensor in the motor
windings connected to one of the
analog or digital inputs
(1-93 Thermistor Source). See
3.3.10.1 PTC Thermistor Connection.
•
Via a KTY sensor in the motor
winding connected to an analog
input (1-96 KTY Thermistor Resource).
See 3.3.10.2 KTY Sensor Connection.
•
Via calculation (ETR = Electronic
Thermal 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
M,N
frequency f . See 3.3.10.3 ETR and
M,N
3.3.10.4 ATEX ETR.
•
Via a mechanical thermal switch
(Klixon type). See 3.3.10.5 Klixon.
For the North American market: The ETR
functions provide class 20 motor overload
protection in accordance with NEC.
MG33MD22 - VLT
1-90 Motor Thermal Protection
Option: Function:
[0] No Continuously overloaded motor, when no
*
protection warning or trip of the Adjustable frequency
drive is required.
[1] Thermistor Activates a warning when the connected
warning thermistor or KTY sensor in the motor reacts
in the event of motor overtemperature.
[2] Thermistor Stops (trips) Adjustable frequency drive when
trip connected thermistor or KTY sensor in the
motor reacts in the event of motor overtem-
perature.
The thermistor cut-out value must be > 3
kΩ.
Integrate a thermistor (PTC sensor) in the
motor for winding protection.
[3] ETR warning Calculates the load when set-up 1 is active
1 and activates a warning on the display when
the motor is overloaded. Program a warning
signal via one of the digital outputs.
[4] ETR trip 1 Calculates the load when set-up 1 is active
and stops (trips) Adjustable frequency drive
when the motor is overloaded. Program a
warning signal via one of the digital outputs.
The signal appears in the event of a warning
and if the Adjustable frequency drive trips
(thermal warning).
[5] ETR warning
2
[6] ETR trip 2
[7] ETR warning
3
[8] ETR trip 3
[9] ETR warning
4
[10] ETR trip 4
[20] ATEX ETR Activates the thermal monitoring function for
Ex-e motors for ATEX. Enables 1-94 ATEX ETR
cur.lim. speed reduction, 1-98 ATEX ETR
interpol. points freq. and 1-99 ATEX ETR
interpol points current.
[21] Advanced
ETR
NOTE!
If [20] is selected, follow the instructions exactly as
described in the dedicated chapter in the VLT
AutomationDrive design guide and the instructions given
by the motor manufacturer.
®
is a registered Danfoss trademark