Frequency Inverter DF51... - Moeller.com.tr

Setting parameters04/07 AWB8230-1541GBUnattended start protection (USP)If the digital input configured as USP is activated, unattended startprotection is also activated. This prevents a restart of the motorwhen the voltage recovers after a mains fault while a start signal(active signal on FWD or REV) is present. Fault message E13 isissued. E13 is cancelled by pressing the Stop key or with an activesignal on the RST input. Alternatively, the start signal can berevoked.X Configure one of the digital inputs 1 to 5 as USP by entering thevalue 13 under the corresponding PNU (C001 to C005).j Warning!If unattended start protection is triggered (fault messageE13) and the fault message is acknowledged with a reset<strong>com</strong>mand while a start signal is still active (input FWD orREV active), the motor will restart immediately.Figure 130:USP3FWD1P24Digital input 1 configured as FWD (start/stopclockwise operation) and digital input 3 as USP(unattended start protection).hhIf you issue a start signal within three seconds ofreestablishing the power supply and unattended startprotection is active, the unattended start protection isalso triggered and issues fault message E13. Whenunattended start protection is used, you should thereforewait for at least three seconds before issuing a start signalto the frequency inverter.Unattended start protection can still be activated whenyou issue a reset <strong>com</strong>mand through the RST input after anundervoltage fault message (E09) has occurred.U NFWD/REVUSPK14f OE13abFigure 131: Function chart for USP (unattended start protection)U N : Supply voltageK14: Signalling relay contact K14f o : Output frequencya Revoke start signal (alarm no longer present)b Start signal120