Allen-Bradley PowerFlex 755 Reference Manual

Chapter 4
CIP Axis Attributes
188 Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018
Acceleration Reference
Usage Access T Data
Type
Default Min Max Semantics of Values
Optional - C
Get/
GSV
T REAL - - - Accel Units
Command acceleration reference into acceleration loop summing junction.
Acceleration Feedback
Usage Access T Data
Type
Default Min Max Semantics of Values
Required - E
Get/
GSV
T REAL - - - Accel Units
Actual acceleration of the axis based on the selected feedback device.
Load Observer Acceleration Estimate
Usage Access T Data
Type
Default Min Max Semantics of Values
Optional - C
Get/
GSV
T REAL - - - Accel Units
Output of the Load Observer that, when the Load Observer block is enabled, is
applied to the acceleration reference summing junction. In the Load Observer
configuration, this signal compensates for disturbances to the load relative to an
ideal load model. When the Load Observer is configured to operate in
Acceleration Feedback Only mode, this signal is the estimated acceleration
feedback signal used to close the acceleration loop. When the Load Observer is
disabled, this signal is 0.
Load Observer Torque Estimate
Usage Access T Data
Type
Default Min Max Semantics of Values
Optional - C
Get/
GSV
T REAL - - - % Motor Rated
Product of the Load Observer Acceleration Estimate signal and the current
System Inertia value, Kj. In the Load Observer configuration, this signal represents
the estimated torque disturbances to the load relative to an ideal load model.
When the Load Observer is configured to operate in Acceleration Feedback Only
mode, this signal is an estimate of the applied motor torque. When the Load
Observer is disabled, this signal is 0.

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