Phase Loss Detection Current Example - Allen-Bradley Kinetix 5700 User Manual

Appendix E Motor Control Feature Support
442
rating. The higher the TorqueProveCurrent value the more current the drive
delivers to the motor to verify that the motor phase wiring is available and
capable of that current level. High current levels conversely cause more thermal
stress and (potentially) can cause more torque to be driven against the motor
brake during the test. If the TorqueProveCurrent level selected is too small, the
drive cannot distinguish the proving current from noise, and in this case the
drive posts an INHIBIT M04 torque-proving configuration fault code. The
minimum amount of torque proving current depends on catalog number of the
drive.

Phase Loss Detection Current Example

In this example, a 2198-D020-ERS3 dual-axis inverter is paired with a
VPL-B1003T-C motor with 6.77 A rms rated current. Use the phase-loss
detection equation and table to calculate the initial minimum torque-proving
current as a percentage of motor rated current. Depending on the unique
characteristics of your application, the required torque-proving current value
can be larger than the initial recommended value.
Figure 237 - Phase-loss Detection Equation
Rating From Table
x 100% =
Motor Rated Current
Table 196 - Recommended Phase-loss Detection Current
Drive Cat. No.
2198-S086-ERSx
2198-S130-ERSx
2198-S160-ERSx
2198-S263-ERSx
2198-S312-ERSx
2198-D006-ERSx
2198-D012-ERSx
2198-D020-ERSx
2198-D032-ERSx
2198-D057-ERSx
Rockwell Automation Publication 2198-UM002G-EN-P - February 2019
0.5746 A
x 100% = 8.49%
6.77 A
Phase-loss Detection Current, min
A, rms
7.183
9.337
12.21
21.492
27.436
0.1796
0.3591
0.5746
0.9337
1.6520