The power stages of the controller can be operated with different voltages and switching frequencies. The voltage and the switching frequency must be adapted to the conditions. The list boxes in the dialog box are used to adapt the power stage to the application conditions. For single-axis applications only the settings (0)-(5) are allowed. All other settings should be used for multi-axis systems. Not all switching frequencies can be used on higher-powered devices. An excessively high switching frequency setting in conjunction with high powers may result in a power reduction.
The switching frequency is set via P 0302 CON_SwitchFreq. It is advisable initially to operate the drive controller with the default setting (8 kHz). Increasing the switching frequency can be useful to improve the control dynamism. However, it may under some circumstances result in a temperature-related loss of power. Switching frequency noise decreases as the switching frequency rises (audible range < 12 kHz). For an overview of the currents dependent on the switching frequency refer to the Operation Manual.
The combination of voltage value and switching frequency describes a stored power stage data set.
The voltages are set according to the switching frequencies in parameter
P 0307 CON_ VoltageSupply.
Bild: Power stage
Parameters
| P. no. |
Parameter name Setting |
Description |
|---|---|---|
| P 0302 | CON_SwitchFreq | Power stage switching frequency setting |
|
2 kHz - 16 kHz 2 kHz only for BG7 |
It is advisable to operate the drive controller with the default setting. Increasing the switching frequency can be useful to improve the control dynamism. Temperature-related derating may occur. Switching frequency noise decreases as the switching frequency rises (audible range < 12 kHz). | |
| P 0307 | CON_ VoltageSupply | Adaptation to the voltage conditions |
| 1x 230 V(0) | Single-phase device | |
| 3x 230 V(1) | Three-phase device | |
| 3x 400 V(2) | Three-phase device | |
| 3x 460 V(3) | Three-phase device | |
| 3x480 V(4) | Three-phase device | |
| Safety low voltage 24-60 V(5) |
||
| P 0752 | MON_PWM_SwitchFreqSelect_Sel | Online switching frequency reduction |
| (0) | OFF | No function |
| (1) | AUTO (1) | Automatic switchover |
| (2) | MAN(2) | Automatic switch to manual switching frequency setting (P 0758) |
| P 0758 | CON_SwitchFreq_selMan | Manually adjustable switching frequency |
| (0) | 2 khz | 2 Khz |
| (1) | 4 khz | 4 Khz |
Tabelle: Power stage parameters
|
ATTENTION: The setting is only applied on the device after a power off/on cycle. If the power stage parameters are changed, the rated currents, overload values and brake chopper thresholds may also change. Any changes to parameters must be saved in the device. |
Copyright © LTi DRiVES GmbH, Januar 2013, ID-Nr.: 0842.26B.1-00 DE