Rockwell Automation Allen-Bradley PowerFlex 520 Series, User Manual, Page: 168 / 272

168 Rockwell Automation Publication 520-UM001K-EN-E - August 2021
Appendix A Supplemental Drive Information
Control
Specifications PowerFlex 523 PowerFlex 525
Method
Sinusoidal PWM, Volts/Hertz, Sensorless Vector Control, Economizer SVC motor
control, Closed Loop Velocity Vector Control, Surface Mount and Interior
Permanent Magnet Motor (without encoder), Interior Permanent Magnet Motor
(with encoder)
(Closed Loop Velocity Vector Control, PM motor control, and SynRM are not applicable
to PowerFlex 523 drives)
Carrier Frequency 2...16 kHz, Drive rating based on 4 kHz
Frequency Accuracy
Digital Input:
Analog Input:
Analog Output:
Within ±0.05% of set output frequency
Within 0.5% of maximum output frequency, 10-Bit resolution
±2% of full scale, 10-Bit resolution
Performance
V/Hz (Volts per Hertz):
SVC (Sensorless Vector):
SVC Economizer:
VVC (Velocity Vector
Control):
PM Motor
(1)
:
(1) For details on specific motor performance, see Knowledge Base article “PowerFlex 525 PM Motor Performance Testing
Summary”.
±1% of base speed across a 60:1 speed range
±0.5% of base speed across a 100:1 speed range
±0.5% of base speed across a 100:1 speed range
(Applicable to PowerFlex 525 drives only)
±0.5% of base speed across a 60:1 speed range
±0.5% of base speed, up to a 20:1 speed range
Performance with Encoder
SVC (Sensorless Vector):
SVC Economizer:
VVC (Velocity Vector
Control):
PM Motor (iPM motor, 10 HP
rating and below)
(1)
:
(Applicable to PowerFlex 525 drives only)
±0.1% of base speed across a 100:1 speed range
(2)
±0.1% of base speed across a 100:1 speed range
(2)
±0.1% of base speed across a 1000:1 speed range
(2)
±0.1% of base speed, up to a 60:1 speed range
(2) For more information, see Determine Encoder Pulse Per Revolution (PPR) Specification Based on Speed Resolution on
page 219 .
Output Voltage Range: 0V to rated motor voltage
Output Frequency Range: 0...500 Hz (programmable)
Efficiency: 97.5% (typical)
Stop Modes:
Multiple programmable stop modes including – Ramp, Coast, DC-Brake,
and Ramp-to-Stop
Accel/Decel:
Four independently programmable accel and decel times. Each time may be
programmed from 0...600 s in 0.01 s increments.
Intermittent Overload
Normal Duty:
110% Overload capability for up to 60 s, 150% for up to 3 s
Applies for power rating above 15 kW (20 HP) only. Based on 480V drive rating.
Heavy Duty: 150% Overload capability for up to 60 s, 180% for up to 3 s (200% programmable)