4 Operation4.6 Start the motorDS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com 1054.6 Start the motorThe motor accelerates at the set values when the start command (highsignal) is applied at control terminal +A1. In the case of frame sizes 3 and 4,the EN signal must be present before +A1. The actual acceleration time candiffer from the set values, depending on the load. After the start iscompleted, the soft starter switches to the operating phase.4.7 OperationSwitching on the motor side is permissible for a safety disconnection(emergency switching off). DANGEROn no account must you open the device if the supply voltageis switched on. Danger to life! DANGERSoft starters are electrical apparatus for use in powerinstallations in industrial applications. During operationhazardous live parts and hot surfaces are present on the softstarter. These present a risk of serious injury! DANGERThe impermissible removal of the required cover, improperinstallation or incorrect operation of the motor or soft starter cancause the failure of the device and serious injury and/or materialdamage. DANGERIf the device displays an error message, this must be examinedcarefully. If a hardware fault is indicated, it is possible that not allphases of the soft starter have disconnected. Before working onthe device or motor, they must be securely isolated beforehandfrom the mains supply without fail (e.g. switch off circuit-breaker).￫ If the drive is not isolated from the supply when stationary(mains contactor, main switch), it may start up accidentally inthe event of a malfunction. Even if the motor is stationary,the terminals are still energized (leakage current across thethyristors, uncontrolled phase) DANGEROne phase to the motor is internally bridged, which means thata supply phase is still directly present at the motor even when itis switched off. Danger in the event of contact!
