Guru
Joined: 13/10/2014
Location: AustraliaPosts: 1688
| Posted: 02:22am 25 Apr 2024 |
I though I'd run through my error messages and give some idea of things we can do with the Nano.
The first message is: "LOW Startup BAT volt"
When the inverter is first powered on - the battery voltage should at least be above the Low Battery cutoff setting, if not, you see the messages above and the inverter gives you the middle finger, the LCD top line tells you to "Restart Inverter".
"DC Isolater Vcap LOW"
At the point of Kilovac enable "for Auto wiring" or, the Main breaker switched to ON and Inverter switched to Run for "manual wiring". At this moment in time, there should be almost no difference between Battery and Cap bank voltage - if there is, you see the above message, possible causes are High resistance / faulty Main breaker or Kilovac wiring or fault, poor inverter wiring etc.
"Cap to Batt V Delta"
This should never happen unless you have a resistive loss (heat) and this time it's happening under load, so the message above is displayed. It means there is larger voltage drop "Delta setting" between the Inverter battery connections and the Inverter power board Cap bank connections. That could be a wiring fault, terminal connection fault, DC breaker of Kilovac, or other problem.
"LOW Battery Cut-off"
The battery is below the setting for low battery voltage, this is timed so that short transitions below that point from transient high loads will not trip the inverter, when tripped, the inverter will display the message above, SPWM is ramped down and the inverter waits for the battery restart setup voltage before ramping up and running.
"LOW Bat ReStart volt"
This message will automatically appear as the battery voltage rises from the previous error above, the inverter will display this until the restart voltage is reached, whereupon the inverter will ramp up and run normally.
"LOW AC voltage Trip!"
This is mainly to be used with the Software over current setting - NOTE: This has not been fully tested by Poida or myself, it works but can have unforeseen consequences if used incorrectly - Don't use this unless you understand the ramifications for the loads and Inverter without further testing - but I seriously like this and it could be handy if used correctly - to be investigated further.
"Software Current ON!"
See above error, this indicates that the inverter is varying the PWM duty cycle and lowering the AC voltage to keep the inverter current below the software current setting. The inverter will ramp way down, think Brown Out condition - the Low AC trip above will stop the inverter at the set low AC voltage point.
"Toriod C Over-T trip"
"Heatsink Over-T trip"
Both are obvious, the inverter ramps down and waits for the the inverter to cool down, then ramps back up.
"Inv OVER-CURRENT !!!"
AC current trip - Hardware OC trip. The over current LED lights, the Reset switch must be pressed to allow the inverter to restart, or the inverter must be powered off and on. Also from DC input current trip using an external current sensor - there is a pin on the controller for this input.
"J11 Link = TEST mode"
This indicates that the Controller has detected the J11 link is in Test Mode, turn the inverter off before changing the Link. It will be automatically detected and show the message above, or return to normal if the link is removed.
In test mode, the Controller will ignore all low voltage conditions - they are not displayed - however it will monitor over temperature settings and will stop SPWM drive until that is resolved. It will Trip on hardware AC over current. It will ramp down on software over current if set, but the LOW AC cutoff is bypassed.
Basically the inverter will run from around 13v to 59v. Yes, it will go higher - do you really want to?
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Edited 2024-04-25 13:20 by KeepIS