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Operating Guide | VACON® NXS/NXP Air-cooled
Technical item or function
Protections
Overvoltage trip limit
Undervoltage trip limit
Ground fault protection
Mains supervision
Motor phase supervision
Overcurrent protection
Unit overtemperature protection
Motor overload protection
Motor stall protection
Motor underload protection
Short-circuit protection of +24 V
and +10 V reference voltages
Drive enclosure ma-
terials
1
For the motor thermal memory and the memory retention function to obey the UL 508C requirements, use the system software version NXS00001V175, NXS00002V177, or
NXP00002V186 or a newer version. If an older system software is used, install a motor overtemperature protection to comply with the UL regulations.
12.9 Brake Chopper Ratings
12.9.1 Brake Chopper Ratings
For brake chopper rating tables, see:
•
12.9.2 Brake Chopper Ratings for Mains Voltage 208–240 V
•
12.9.3 Brake Chopper Ratings for Mains Voltage 380–500 V
•
12.9.4 Brake Chopper Ratings for Mains Voltage 525–690 V
•
12.9.5 Internal Brake Resistors, FR4–FR6 (380–500 V)
For more information, see VACON
194 | Danfoss A/S © 2020.02
®
NX Brake Resistors User Manual.
Technical data
The 240 volt drives: 437 V DC
The 500 volt drives: 911 V DC
The 690 volt drives: 1200 V DC
Mains voltage 240 V: 183 V DC.
Mains voltage 500 V: 333 V DC.
Mains voltage 690 V: 461 V DC.
If there is a ground fault in the motor or motor cable, only the AC drive
is protected.
Trips if some of the input phases are missing
Trips if some of the output phases are missing
Yes
Yes
(1)
Yes.
The motor overload protection activates at 110% of the full load cur-
rent.
Yes
Yes
Yes
Paint color codes for the enclosure:
•
Dark grey = NCS 7010-R90B (Pantone 7546C)
•
Blue = NCS S3020-B
Specifications
AQ275638903263en-000301 / DPD00910
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