OD_321E_00 Voltage Limit
Function
Maximum permissible PWM voltage (duty cycle). Values ≤ 1000 are interpreted as per mil values (of the available voltage). Values > 1000 as millivolt.
Object description
| Index | 321Eh |
| Object name | Voltage Limit |
| Object Code | VARIABLE |
| Data type | UNSIGNED32 |
| Savable | yes, category: application |
| Access | read / write |
| PDO mapping | no |
Description
Also dependent on this value is whether the overmodulation of the voltage vector is used. If overmodulation is used, a higher torque can be achieved. The resulting voltage is no longer sinusoidal, which can result in harmonics and higher losses.
| Value in mV | Overmodulation |
|---|---|
| 1001…U o_low | None; the voltage vector describes a circle. |
| U o_low…U o_high | The voltage vector describes a circle that is increasingly flattened on four/six sides in proportion to the set value. |
| ≥U o_high | Full; the voltage vector describes a square or a hexagon. |
- U o_low
- The lowest voltage above which overmodulation occurs. Is calculated as follows:
- U o_high
- The maximum overmodulation occurs above this voltage. Is calculated as follows: