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Vacon 100 flow Applications Manual

Vacon 100 flow
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P3.9.2.1 MOTOR THERMAL PROTECTION (ID 704)
Use this parameter to select the response of the drive to a 'Motor Overtemperature' fault.
If the motor thermal protection function detects that the temperature of the motor is too
high, a motor overtemperature fault occurs.
NOTE!
If you have a motor thermistor, use it to protect the motor. Set the value of this
parameter to 0.
P3.9.2.2 AMBIENT TEMPERATURE (ID 705)
Use this parameter to set the ambient temperature where the motor is installed.
The temperature value is given in celsius or fahrenheit degrees.
P3.9.2.3 ZERO SPEED COOLING FACTOR (ID 706)
Use this parameter to set the cooling factor at 0 speed in relation to the point where the
motor operates at nominal speed without external cooling.
The default value is set for conditions where there is no external fan. If you use an external
fan, you can set the value higher than without the fan, for example at 90%.
If you change parameter P3.1.1.4 (Motor Nominal Current), parameter P3.9.2.3 is
automatically set to its default value.
Although you change this parameter, it does not have an effect on the maximum output
current of the drive. Only parameter P3.1.3.1 Motor Current Limit can change the maximum
output current.
The corner frequency for the thermal protection is 70% of the value of the parameter
P3.1.1.2 Motor Nominal Frequency.
ff
n
ID706=40%
0
I
T
100%
Overload area
P
cooling
Corner freq
Fig. 66: The motor thermal current I
T
curve
VACON · 286 PARAMETER DESCRIPTIONS
10
LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/

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Vacon 100 flow Specifications

General IconGeneral
Protection classIP20
Communication interfaceRS-485
Operating temperature-10°C to +50°C
Storage temperature-40°C to +70°C
Ambient temperature-10°C to +40°C
Control methodSensorless vector control
Communication protocolsCANopen
ApprovalsCE, UL
I/O2 analog inputs
Protection featuresOvercurrent, overvoltage, undervoltage, overtemperature
Frequency range0 Hz to 400 Hz
Humidity5% to 95%, non-condensing
Voltage range208-240 V

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