Danfoss iC7 Series

Design Guide | iC7 Series Liquid-cooled System Modules
Table 81: Technical Data (continued)
Technical item or function Technical data
Output voltage 0–U
in
, 3-phase
Output frequency 0–599 Hz
Switching frequency, INU 1.5–10 kHz
Default: 3 kHz
Default: 8 kHz with +AES1
Field weakening point 1–600 Hz
Motor control principles U/f control
VVC+ (Vector Voltage Control)
Flux Vector Control
Motor and generator types sup-
ported
Induction/asynchronous motor
Non-Salient Permanent Magnet Motor
Salient Permanent Magnet Motor
Synchronous Reluctance Assisted Permanent Magnet
Motor
Torque control, torque step rise time Open loop: <5 ms with nominal torque and <1 ms with
nominal torque with AFE supply
Closed loop: <5 ms with nominal torque and <1 ms with
nominal torque with AFE supply
Torque control, static accuracy Open loop: <2% of motor nominal torque up to nomi-
nal speed and <4% of motor nominal torque in the field
weakening area
Closed loop: <2% of motor nominal torque up to nomi-
nal speed and <4% of motor nominal torque in the field
weakening area
Speed control, static accuracy Open loop: 5% of motor nominal slip up to motor nom-
inal motor frequency and 10% of motor nominal slip in
the field weakening area
Closed loop: 0.01% static error of nominal speed with en-
coder PPR of 1024 or better
Speed control, dynamic accuracy (re-
sponse)
Open loop: 0.2–0.4% s with nominal torque step
Closed loop: 0.1–0.2% s with nominal torque step
Motor control resolution Reference setpoint resolution 31 bit + sign
Motor connection
Cable length Up to 150 m symmetrical and shielded motor cable. See
the cable restrictions for filters in 7.13.1 dU/dt Filter and
7.13.2 Common-mode Filter.
Danfoss Drives Oy © 2024.03 AJ475942178716en-000101 / 172K2848A | 217