If the value of the DC link voltage drops below the value set in parameter P 0747 MON_PF_OnLimit , the error ERR-34 "Power failure detected" is reported and the parameterised error reaction is triggered. By parameterizing a quick stop as the error reaction with a sufficiently steep deceleration ramp, the DC link voltage can be maintained above the undervoltage threshold (power failure bridging). This reaction lasts until the drive has been braked to a low speed.
| P. no. | Parameter name/Setting | Function |
|---|---|---|
| P 0747 | MON_PF_ONLimit | Voltage threshold for power failure reaction |
| P 0749 | MON_Def_OverVoltage | DC link overvoltage |
| The default setting is 0 V (function "Off"). | ||
Tabelle: Voltage threshold for power failure
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