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c. Click on Configure Ports... If comm port being used is known, select it from Serial port drop down otherwise click
on Scan Ports to try and identify the port being used. Once port has been identified, click OK.
d. Click on Select File... and navigate to directory where Control Board firmware is saved. Select appropriate file –
contact AEM EV Tech Support for info on latest firmware files.
3. With programming cable connected and switch pointed toward purple wire for programming, turn on low voltage (12v)
inverter power.
4. Click on Program to start programming. Monitor the programming status.
5. Once programming is complete, click OK to close the status window and turn the inverter off. Either disconnect the
programming cable or if GUI changes are necessary, point the programming cable switch toward green wire for GUI mode.
When the inverter is repowered, the new firmware will be operational.
Using RMS GUI Software
The RMS GUI (graphic user interface, "gooey") is a Windows application that communicates with the Control Board via RS232
serial communications interface (SCI) to program certain EEPROM parameters. The list of adjustable EEPROM parameters is
discussed in a previous section of this manual. A parameter "symbols" files that defines the EEPROM settings to be configured is
required to match the Control Boards current firmware version. This file will be provided by AEM EV.
Use the following steps to change EEPROM parameters on the Control Board. This example will show how to enable the HV
active discharge feature. Use the same steps to change other EEPROM settings.
1. Download and install RMS GUI 148.exe and gtk+-2.8.9-setup-1.exe from
General Link to All Files > 02 Tools > RMS GUI
2. With programming cable connected and switch pointed toward green wire for GUI mode, turn on low voltage (12v) inverter
power.
3. Ensure appropriate symbols files is in the RMS GUI directory and then launch the GUI app.
4. The GUI app will open and display on the Memory View tab. To change EEPROM settings, click on EEPROM View tab.
5. Find the EEPROM parameter to be changed. – in this case, Relay_Output_State_EEPROM & Discharge_Enable_EEPROM.
6. Change Relay_Output_State_EEPROM from 0x000c to 0x002c. Change Discharge_Enable_EEPROM from 0 to 1. Hit Enter on
keyboard to commit parameter change.
7. Once EEPROM values have been change, click on Program EEPROM button. Status message will appear to confirm that
programming has been completed.
8. Follow on-screen instructions to power cycle inverter, then click on the Refresh button.
9. Confirm that EEPROM values have successfully been changed.
10.Disconnect programming cable from inverter harness and reconnect encoder harness. The drive unit is now ready to be
operated.
AEM Performance Electronics
2205 W 126th Street, Unit A
Hawthorne, CA 90250
https://www.cascadiamotion.com/documents
Page 21 of 23
Phone (8am-5pm M-F PST): 310-484-2322
Fax: 310-484-0152
sales@aemev.com
tech@aemev.com
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