SMA Manual Recommendation
| Error No. | Explanation | Corrective measures |
| 9009 | The quick-stop switch was tripped manually | • Reconnect the quickstop switch after correcting the error |
This is a very challenging fault to diagnose since the fast stop circuits are present in many parts of the inverter. We will try to list out the areas which will be helpful from most common to least common. With each item, we would suggest inspecting all connections to the related circuits, potentially testing circuits if necessary to diagnose, and in certain cases it may be helpful to install temporary jumpers to troubleshoot circuits by completing the signal circuits.
- Customer Fast Stop Signal
- Observe all safety precautions first on this. Please check to make sure this was not stopped for a reason before making changes. This circuit comes from the X440 terminal block in the customer connection area (image below). It's a 24vdc signal that loops from the SC30RIO board on X9702 pin's 1 and 3. If you're unsure whether you're using it or not, a quick way to eliminate this as a potential problem is to jumper the signal to see if the fault clears.
- Transformer Alarm Circuits
- Even if the transformer alarms are not connected, this could still be the source of the problem. Be sure to check all transformer gauges/sensors and signals first to ensure there is not a problem with the transformer.
- If transformer alarms are connected, you'll want to check the integrity of the entire circuit.
- If the transformer alarms are not connected, the problem could still exist from a loose cover at the back of the inverter where the busbars are located. (Picture below) Also, the entire circuit should be verified. Often, the signals are jumpered at the X9703 on the SC30RIO board. These jumpers are a very common problem since they are hard to install, easy to fall out, and often get bumped during service of the inverter. This is an important area to check. (Picture below)
- The Inverter S2 E-Stop Button
- This is self explanatory, it's the button on the front of the inverter. Please take caution before making changes - Be sure to check that it is not locked out for a reason. (Picture below). What may not be as obvious, is that it can require a key to unlock the button to remove the alarm. If the fault still remains, you will want to fully troubleshoot the remainder of this circuit inside the inverter.
- The Dreaded CANBUS Circuit
- This touches pretty much every circuit in the inverter. Good luck, and may Mother Earth have mercy on you. Seriously though, there exists a relevant Bluenote which requires you to each CANBUS connector in the entire inverter and ensure that the washers on the fasteners are removed. (Picture below)
- Furthermore, the CANBUS connectors themselves have been known to fail. You may want to open each connector up to inspect the condition of the internal connections.
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