Ecolab MU421-P - Upgrade Inverter Firmware

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6.3 Upgrade Inverter
1. Powero󰀨unitusingserviceswitch(waitforunittodischargeapproximately5min.)
2. Open Inverter box
3. Disconnect the Display cable connected to either of the two modbus terminals
4. Connect the usb cable (110007946) to either one of the modbus connectors
5. Connect usb cable to PC
6. Power on inverter by using service switch (AWARE OF HIGH VOLTAGE IN INVERTER!)
7. StartupFirmwareupgradeprogram(CanbedownloadedfromNilskFOODweb)
8. Clickbrowsetoselectupgradele*.hex(CanbedownloadedfromNilskFOODweb)
9. ClickinSerialportup/downtoselectthecomportforUSBcable,ifcomportisnotshowing
press“refresh”button
10. IfnecessarychangeinverterIDtomatchInverterID,Defaultis1
11. PressUploadFirmware,andwaitforprogressbartoreachtheendandturngreen
12. The progress bar will start moving
110007941
Software Manual