Active Front End (+Afe Option) - Danfoss EC-C1700B-420 User Manual

User Guide
EC-C1700B-420
Product overview
© Danfoss | June 2023
Motor Control characteristics (continued)
•
Field weakening control
•
Working point
optimization
Motor Control protections and limits
Protections
Software overcurrent trip (configurable)
Hardware overcurrent trip (Fixed 750 Apeak, AC-side)
Short circuit trip
Software overvoltage trip (configurable)
Hardware overvoltage trip (Fixed 1300 V
Inverter overtemperature trip (measured)
Inverter overtemperature trip (estimated)
Electric machine temperature surveillance and trip (configurable)
Over speed trip (configurable)
Undervoltage trip (configurable, DC-link voltage)
Earth fault trip
Phase loss trip
Limits
Speed limit positive
Speed limit negative
Torque limit positive
Torque limit negative
Mechanical power limit positive (motoring)
Mechanical power limit negative (generating)
DC current limit positive (motoring)
DC current limit negative (generating)
Overvoltage controller (DC-link voltage)
Undervoltage controller (DC-link voltage)
Electric machine configurable derating according to winding temperature
Back-emf max. value limit

Active Front End (+AFE option)

Active Front End is used for connecting to AC grid with regenerative power and low harmonic. In
addition, it is used for bidirectional connection to AC grids.
Maximizes the field weakening performance by optimizing the use of inverter
current and torque production capability of the motor.
Maximum torque per ampere working point optimization is used to improve
efficiency of the motor.
, DC-link voltage)
DC
BC454142332191en-000101 | 21