Allen-Bradley PowerFlex 755 Reference Manual

CIP Axis Attributes
Chapter 4
Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018 215
Torque Limit - Negative
Usage Access T Data
Type
Default Min Max Semantics of Values
Required - C Set/SSV REAL -100
FD
-10
3
0 % Motor Rated
This negative value determines the most negative torque value that can be applied
to the motor. If the device attempts to apply a more negative torque than this
limit, the torque command is clamped to this value.
Torque Rate Limit
Usage Access T Data
Type
Default Min Max Semantics of Values
Optional - C Set/SSV REAL 10
6
0
% Motor Rated / Sec
Limits the rate of change of the torque reference signal.
Torque Threshold
Usage Access T Data
Type
Default Min Max Semantics of Values
Optional - C Set/SSV REAL 90
FD
0 10
3
% Motor Rated
Specifies the threshold for the Filtered Torque Reference signal magnitude that
when exceeded, results in the Torque Threshold status bit being set.
Overtorque Limit
Usage Access T Data
Type
Default Min Max Semantics of Values
Optional - D Set/SSV REAL 200 0 10
3
% Motor Rated
Maximum limit for the torque producing Iq Current Feedback signal magnitude.
When the Iq Current Feedback signal is greater than this value for the duration
specified by Overtorque Limit Time attribute, the result is an Overtorque Limit
exception. This feature lets the device generate an exception if there is a sudden
increase in load torque during operation. This condition could occur if a bearing
fails, a hard stop is reached, or there is some other mechanical failure.

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