| ASCII - Command | ARLP2 | |||
| Syntax Transmit | ARLP2 [Data] | |||
| Syntax Receive | ARLP2 [Data] | Available in | ||
| Type | Variable rw | MMI | No | |
| ASCII Format | Float | CANBus Object Number | 3609 (hex) | |
| DIM | Hz | PROFIBUS PNU | 1865 (dec) IND = 1 (dec) | |
| Range | 0 ... 1500 | DPR | 265 (dec) | |
| Default | 0 | |||
| Opmode | All | Data Type Bus/DPR | - | |
| Drive State | - | Weighting | ||
| Start Firmware | 1.0 | |||
| Configuration | No | Last Change of this Object | 1.0 | |
| Function Group | filter | EEPROM | Yes | |
| Short Description | Low pass filter | |||
Description
| ARLP2 is the cut-off frequency of an additional 1st-order low-pass filter for the velocity loop. If If ARLP2 is set to a value > 0, the filter is activated, otherwise it is turned off. Low-pass filters are used to suppress signals of higher frequencies (e.g. resonances and noise). Applying a low-pass filter to the velocity loop leads to an undesired phase lag above the filter's cut-off ferquency besides the desired signal attenuation. This leads to a degradation of phase margin. Thus, the velocity-loop bandwidth is always < 0.5 times the low-pass cutt-off frequency. For a detailed description of how to set up the velocity-loop filter,see BQMODE. |