Eaton EMS Series Manual

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4 Device status and fault detection4.2 Error acknowledgment52 Elektronischer Motorstarter EMS/Electronic Motor Starter EMS 04/15 MN03407009Z-DE/EN www.eaton.com4.2 Error acknowledgmentThere are three ways to acknowledge an error or fault:• Manually, using the Reset buttonPressing the Reset pushbutton on the front of the device will acknowl-edge an error/fault. If the Reset pushbutton is still being pressed after atime of approx. 2 seconds has elapsed, the electronic motor starter willreassume its error condition. If the acknowledgment request is present(i.e., if the Reset pushbutton is held down) for more than 6 seconds, anexpanded test will be performed on the power output stage and thedevice will then switch to the “Parameter configuration“ operatingmode.• Manually, using a remote acknowledgment signalA remote acknowledgment control section can be implemented by con-necting a pushbutton (N/O) between the MAN and RES / A1 (24 V DC)and RES terminals. An acknowledgment signal will be triggered as soonas a positive edge is detected at the MAN input. If a negative edge is notdetected after a time of approx. 2 seconds elapses, the electronic motorstarter will reassume its error condition, as it will be impossible to ruleout tampering with or a defect in the acknowledgment circuit.• AutomaticIf an electrical connection is established between the RES and AUTterminals, the device will acknowledge errors and faults automaticallyafter the bimetal monitoring mechanism is actuated and the subsequentcool-down period elapses. DANGERPlease note that automatic restarts can result in bodily injuryand/or property damage!The risk of an automatic restart exists when using the“automatic reset“ operating mode (electrical connectionbetween RES – AUT terminals).This automatic restart will occur after the cool-down periodelapses (20 minutes). DANGERDo not use the automatic restart function in explosion protectionapplications!