Design Guide | iC7 Series Air-cooled System Modules
Table 69: Mains connection, AFE/GC modules
(continued)
Technical item or function
Technical data
Total harmonics distortion THDi (nominal situation and undis-
torted network)
AFE: <5% (Voltage class 5)
Short-circuit current rating, with the specified fuses or cir-
cuit-breakers
The maximum short circuit current I
cc
≤ 100 kA
Overvoltage category
Category III
Voltage imbalance
AFE: ± 3%
Table 70: Motor connection, INU modules
Technical item or function
Technical data
Output voltage
0–400/460/500 V
Nominal DC voltage
Voltage class 5: 465–740 V DC
Output frequency
0–599 Hz
Switching frequency
INU: 1.5–10 kHz DPWM, default 3 kHz DPWM
AFE/GC: 4 kHz
Field weakening point
1–600 Hz
Motor control principles
U/f control
VVC+ (Vector Voltage Control)
FVC+ (Flux Vector Control)
Motor and generator types supported
Induction/asynchronous motor
Non-Salient 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 nominal speed
and <4% of motor nominal torque in the field weakening area
Closed loop: <2% of motor nominal torque up to nominal 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 nominal motor
frequency and 10% of motor nominal slip in the field weakening
area
Closed loop: 0.01% static error of nominal speed with encoder
PPR of 1024 or better
Speed control, dynamic accuracy (response)
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
Cable length
up to 150 m (492 ft) shielded motor cable
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