Danfoss VACON 3000 Application Manual page 197

VACON® 3000
Application Guide
Selection number Selection name
0 No Action
1 Alarm
2 Alarm, preset frequency
3 Alarm, previous frequency
4 Fault
5 Fault, coasting
7.150 (ID 701) Response to External Fault
Location in the menu:
• INU application: P3.9.1.2
• AFE application: P3.8.1.2
• BCU application: P3.6.1.2
Use this parameter to select the response of the drive to an External Fault.
If a fault occurs, the drive can show a notification of it on the display of the drive. An external fault is activated with a digital input
signal. The default digital input is DI3. You can also program the response data into a relay output.
7.151 (ID 702) Response to Output Phase Fault
Location in the menu:
• INU application: P3.9.1.4
• AFE application: P3.8.1.4
• BCU application: P3.6.1.4
Use this parameter to select the response of the drive to an 'Output Phase' fault. If the measurement of the motor current detects
that there is no current in 1 motor phase, an output phase fault occurs. See ID 701.
7.152 (ID 703) Earth Fault
Location in the menu:
• INU application: P3.9.1.8
• AFE application: P3.8.1.8
Use this parameter to select the response of the drive to an Earth Fault.
If the measurement of the current detects that the sum of the motor phase currents is not 0, an earth fault occurs. See ID 701.
7.153 (ID 704) Motor Thermal Protection
Location in the menu:
• INU application: P3.9.2.1
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.
If possible, use a motor thermistor to protect the motor. Set the value of this parameter to 0.
The motor thermal protection prevents the motor from becoming too hot.
The AC drive can supply a current that is higher than the nominal current. The high current can be necessary to the load, and it must
be used. In these conditions, there is a risk of a thermal overload. Low frequencies have a higher risk. At low frequencies, the cooling
effect and the capacity of the motor decrease. If the motor has an external fan, the load reduction at low frequencies is small.
The motor thermal protection is based on calculations. The protection function uses the output current of the drive to know what is
the load on the motor. If the control board is not energized, the calculations are reset.
To adjust the thermal protection of the motor, use the parameters from P3.9.2.1 to P3.9.2.5. You can monitor the thermal status of
the motor on the display of the control panel.
Danfoss A/S © 2021.09
Description
AI Low Protection is not used.
The frequency reference is set as in P2.8.1.10 Preset Alarm Frequency.
The last valid frequency is kept as frequency reference.
The drive stops as is set in P2.4.4 Stop Function.
The drive stops by coasting.
Parameter descriptions
AB319735759636en-000101 / DPD01822 | 197