i700 servo inverter from V01.07.05.10577
Response of the new version:
Now the speed resolution under 0x6090:x (nominator / denominator) corresponds to the actual conversion factor for speed values. The factor can be used for conversions between speed values of the application in the unit [rev/s] and i700 internal values in the unit [incVel/s].
Speed resolution, new Lenze setting:
- 0x6090:1 = 33554432 [incVel/s]
- 0x6090:2 = 125 [rev/s]
The units comply with the demands of the standard.
The numerator-denominator factor results from 2^31 / 8000 simplified by 64. The value 2^31 would exeed the range of nominator parameter 0x6090:1.
What happens?
The speed resolution (0x6090:x) cannot be used for conversions.
In the application program, speed values are displayed in [rev/s] and in the i700 in [incVel/s]. The speed resolution expects to correspond to the conversion factor between the two units.
The Lenze setting of the speed resolution (0x6090:1 / 0x6090:2) = (65536 / 1) does, however, not correspond to the actual conversion factor for speed values.
When does the problem occur?
The problem occurs when using the speed resolution (0x6090:x) for converting speed values.
Which products are affected?
i700 servo inverter
Short-term measures/recommendations:
Use the actual conversion factor (33554432 / 125) for converting speed values.
Evaluation:
Normally, the speed resolution is not required for the Lenze system (Lenze controller) because all necessary conversions are performed automatically.
The conversion factor is primarily required when using controllers from other manufacturers for which the setpoints have to be scaled in the application program.
