Allen-Bradley PowerFlex 755 User Manual

328 Rockwell Automation Publication MOTION-UM003K-EN-P - January 2019
Appendix B Out of Box Configuration for PowerFlex Drives
The following trends show how the axis stops and starts with a trapezoidal
profile and an S-curve profile.
Corrective Action
Use the same deceleration rate in the instruction that starts the axis and the
instruction that stops the axis.
Start While Decelerating and Reduce the Deceleration Rate
Trapezoidal S-curve
The axis speeds back up as soon as you start the jog again. The lower
deceleration doesn’t change the response of the axis.
The jog instruction reduces the deceleration of the axis. It now takes longer to bring
the acceleration rate to 0. The speed overshoots 0 and the axis moves in the
opposite direction.
stop
jog
speed
acceleration
stop
jog
deceleration
changes
speed overshoots 0 and axis
goes in opposite direction
In a MAS instruction, set Change Decel to
Yes. The axis uses the Decel Rate of the
instruction.
Use the same deceleration rate in both
instructions.

Allen-Bradley PowerFlex 755 Specifications

General

Category	AC Drive
Amperage	2.2…1470 A
Output Voltage	0 to Input Voltage
Output Current	2.2…1470 A
Enclosure	IP20, IP30, IP54
Communications	EtherNet/IP, ControlNet, DeviceNet
I/O	Digital, Analog, Encoder, Relay
Safety	Safe Speed Monitor
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overload, Short Circuit, Ground Fault, Overtemperature
Operating Temperature	-10°C to 50°C (14°F to 122°F)
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Humidity	5…95% noncondensing
Altitude	Up to 1000m (3300ft) without derating
Voltage	200-240V AC, 380-480V AC, 500-600V AC, 690V AC
Input Voltage	200-240V AC, 380-480V AC, 500-600V AC, 690V AC
Control Method	Sensorless Vector