Danfoss VLT AutomationDrive FC 302 Programming Guide

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Parameter 1-89 Stop Func Torque Ramp Time
Table 135: Parameter 1-89 Stop Func Torque Ramp Time
1-89 Stop Func Torque Ramp Time
Default value: 0.01 s
Parameter type: Range, 0.01 - 3600.00 s
Setup: All setups
Conversion index: -2
Data type: Uint32
Change during operation: True
Configure the time in seconds during which the torque is ramped to 0, after the motor speed is ramped down to the minimum
speed as specified in parameter 1-81 Min Speed for Function at Stop [RPM].
5.2.10 1-9* Motor Temperature
N O T I C E
The following parameters are only available in FC 302:
Parameter 1-94 ATEX ETR Cur.Lim. Speed Reduction
Parameter 1-95 Thermistor Sensor Type
Parameter 1-96 Thermistor Sensor Resource
Parameter 1-98 ATEX ETR Interpol. Points Freq.
Parameter 1-99 ATEX ETR Interpol. Points Current
Parameter 1-90 Motor Thermal Protection
Table 136: Parameter 1-90 Motor Thermal Protection
1-90 Motor Thermal Protection
Default value: [0] No protection
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
Motor thermal protection can be implemented using a range of techniques:
Via a PTC sensor in the motor windings connected to 1 of the analog or digital inputs (parameter 1-93 Thermistor Resource). See
the chapter PTC Thermistor Connection.
Via a KTY sensor in the motor winding connected to an analog input (parameter 1-96 Thermistor Sensor Resource). See the chap-
ter 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
M,N
and the rated motor frequency f
M,N
. See the chapter ETR.
Via a mechanical thermal switch (Klixon type). See the chapter Klixon.
For the North American market: The ETR functions provide class 20 motor overload protection in accordance with NEC.
Option
Name
Description
[0]*
No protection
Continuously overloaded motor when no warning or trip of the drive is required.
[1]
Thermistor warning
Activates a warning when the connected thermistor or KTY sensor in the motor reacts in the
event of motor overtemperature.
[2]
Thermistor trip
Stops (trips) the drive when connected thermistor or KTY sensor in the motor reacts in the event
of motor overtemperature. The thermistor cutout value must be more than 3 kΩ. Integrate a
thermistor (PTC sensor) in the motor for winding protection.
[3]
ETR warning 1
Calculates the load when setup 1 is active and activates a warning on the display when the mo-
tor is overloaded. Program a warning signal via 1 of the digital outputs.
AU275636650261en-000101 / 130R0334102 | Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English