PIP Inverter Error "error 09" bus soft start failed

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Walde
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PIP Inverter Error "error 09" bus soft start failed

Post by Walde » Sat, 18 May 2019, 00:50

PIP Inverter Error "error 09" bus soft start failed

Solar SM 5kw 48vdc = EASUN POWER 5000W Solar Inverter 80A MPPT Off Grid Inverter 48V 220V Hybrid Inverter Pure Sine Wave Inverter 60A Battery Charger

Type 2018

Maybe one of you can help me.

On the motherboard, a diode is apparently defective.
Designation on the diode is only GFZ without manufacturer and without values. The mounting space is labeled TVS.

The board is the new model (with the ID 16-500558-02G)
Inverter 5kva / 48v

Image
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Thanks in advance to all who help me

Greetings Dirk

Please, please, please
Thank you thank you thank you

[ Edited Coulomb: replaced [image=] tags with [img] or [image=640]. Also fixed image URL where required. Use browser "show image" or "show image in new tab" option to zoom into the last three images. ]

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weber
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Re: PIP Inverter Error "error 09" bus soft start failed

Post by weber » Sat, 18 May 2019, 08:07

It's an SMCJ51A, a 51 volt unidirectional transient voltage suppressor (TVS) in an SMC package. Datasheet here:
https://www.diodes.com/assets/Datasheets/ds19003.pdf
It is likely to be available from many suppliers, such as Element14, Digikey, Mouser and RS Components.

Since that TVS has failed, it's possible that the MOSFET it was protecting has also failed, and possibly other MOSFETs and their driver components.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

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coulomb
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Re: PIP Inverter Error "error 09" bus soft start failed

Post by coulomb » Sat, 18 May 2019, 08:23

Walde wrote:
Sat, 18 May 2019, 00:50
PIP Inverter Error "error 09" bus soft start failed
Hi, Dirk. Fault code 09 is the dreaded one. It often indicates a lot of damaged components. But you may be lucky with this one.
Solar SM 5kw 48vdc = EASUN POWER 5000W Solar Inverter 80A MPPT Off Grid Inverter 48V 220V Hybrid Inverter Pure Sine Wave Inverter 60A Battery Charger
Type 2018
Thanks for the very full model description. It's so infuriating when people say that they have an "Axpert 5kVA", which could mean about a dozen different models.
On the motherboard, a diode is apparently defective.
Designation on the diode is only GFZ without manufacturer and without values. The mounting space is labeled TVS.
That's not technically a diode, it's a Transient Voltage Suppressor. It's something like two high powered zener diodes back to back. Also, "GFZ" is the SMD (Surface Mount Device) code; it's a small code, usually 2 or 3 alphanumeric characters, which represents a compact code leading to the actual part number, which is so long it would not fit legibly on most SMD parts. I Googled "SMD code "GFZ"" (without the outer quotes), and it led to this:

https://www.vishay.com/docs/88394/smcj.pdf

Search in that PDF for "GFZ" without the quotes to find the one you have now. The minimum voltage that these start conducting at seems to be 56.7 V, so presumably it's across the battery-side full bridge MOSFETs. That voltage seems a little low, so maybe that's the reason it got hot and eventually blew, and maybe the replacement should be slightly higher voltage. However, its "maximum clamping voltage" is 82.4 V, presumably protecting an 80 V rated part. Find a replacement at the usual on-line suppliers: RS Online (free delivery even for small orders), Digi-Key, Element-14/Farnell/Newark, Mouser, etc. Perhaps buy a few (there may be a minimum order quantity), and perhaps order a few different voltages to experiment with. If you replace it with a slightly higher voltage version, perhaps replace the other three as well. They may also be getting hot at higher battery voltages. You don't want to go too high in voltage, or the protection will be useless.

[ Edit: "across the battery" → "across the battery-side full bridge MOSFETs". ]
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

Walde
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Re: PIP Inverter Error "error 09" bus soft start failed

Post by Walde » Sat, 18 May 2019, 19:05

OK thank you for the info.
Get the TVS Diodes now at Mouser.com.
They have the TVS SMCJ51A (identification GFZ).
In Germany, the ESD suppressors diodes.

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