Danfoss vlt aqua Programming Guide

2.3.7. 1-8* Stop Adjustments
Parameters for setting special stop features for the motor.
1-80 Function at Stop
Option: Function:
Select the frequency converter function after a stop command
or after the speed is ramped down to the settings in par. 1-81
Min Speed for Function at Stop [RPM] .
[0]
*
Coast Leaves motor in free mode.
[1]
*
DC hold/Preheat Energizes motor with a DC holding current (see par. 2-00).
1-81 Min Speed for Function at Stop [RPM]
Range: Function:
3 RPM
*
[0 - 600 RPM] Set the speed at which to activate par. 1-80 Function at stop .
1-82 Min Speed for Function at Stop [Hz]
Range: Function:
0.0 Hz
*
[0.0 - 500 Hz] Set the output frequency at which to activate par. 1-80 Function
at stop
.
2.3.8. 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 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
. The calculations estimate the need for a lower
load at lower speed due to less cooling from the fan
incorporated in the motor.
[0] No protection If the motor is continuously overloaded and no warning or trip
of frequency converter is wanted.
[1] Thermistor warning Activates a warning when the connected thermistor in the motor
reacts in the event of motor over-temperature.
VLT
®
AQUA Drive Programming Guide 2. Parameter Description
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark 53
2

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled