Danfoss VACON NX, Инструкция по применению

Страница: 337 / 360

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
11.1.58 Fault 14 - AC drive overtemperature, Subcode S3 - Liquid flow
Cause
Appears when the liquid flow supervision is activated, and problems in cooling liquid flow are detected.
Troubleshooting
Check the correct cooling liquid flow and temperature.
Check the circulation for possible leaks.
Do a check of the ambient temperature.
Make sure that the switching frequency is not too high in relation to the ambient temperature and the motor load.
11.1.59 Fault 14 - AC drive overtemperature, Subcode S4 - Overtemperature on ASIC board or driv-
er boards
Cause
Overheating detected in AC drive.
Heat sink temperature is over 90 °C (194 °F). Overtemperature alarm is issued when the heat sink temperature goes over 85 °C
(185 °F).
In 525–690 V, FR6: Heat sink temperature is over 77 °C (170.6 °F). Overtemperature alarm is issued when the heat sink temperature
goes over 72 °C (161.6 °F).
Troubleshooting
Do a check of the actual amount and flow of cooling air.
Examine the heat sink for dust.
Do a check of the ambient temperature.
Make sure that the switching frequency is not too high in relation to the ambient temperature and the motor load.
For FR10-FR11 Standalone: check door filters, and clean or replace if needed.
11.1.60 Fault 15 - Motor stalled
Cause
The motor stalled.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
Check the motor and the load.
Insufficient motor power, check motor stall protection parameterization.
11.1.61 Fault 16 - Motor overtemperature
Cause
There is too heavy a load on the motor.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
Decrease the motor load.
If there is no motor overload, do a check of the temperature model parameters.
11.1.62 Fault 17 - Motor underload
Cause
Motor underload protection has tripped.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
Check the load.
Check underload protection parameterization.
11.1.63 Fault 18 - Unbalance, Subcode S1 - Current unbalance
Cause
Unbalance between power modules in paralleled power units.
This fault is type A fault (Alarm).
AB296635287482en-000301 / DPD00903 | 337 Danfoss A/S © 2023.02
Fault Tracing
VACON® NX All-in-One
Application Guide