Panasonic MINAS A6 Series, Technical Reference

Page: 182 / 306

6.8Deterioration diagnosis warning function
6-25

Deterioration diagnosis warning for constant velocity torque command average value

Deterioration diagnosis velocity output (V-DIAG) is ON when the motor velocity is within the range of Pr4.35
"Speed coincidence range" of Pr5.75 "Deterioration diagnosis velocity setting".

When deterioration diagnosis velocity output (V-DIAG) is turned ON, torque command average calculation
will start and after lapse of the set time of Pr5.76, deterioration diagnosis judgment by torque command
average will become effective. This will continue while deterioration diagnosis velocity output (V-DIAG)
remains output ON, however will return to invalid condition when the output is turned OFF.

The upper limit and lower limit values for torque command average can be set by parameters Pr5.77 and
5.78 respectively. Deterioration diagnostic warning WngAC is generated in case these upper or lower limit
values have been exceeded for changes in the load characteristic estimates.
When a deterioration diagnosis warning does not occur for the torque command average value
When a deterioration diagnosis warning occurs for the torque command average value