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Trevor Bird avatar image
Trevor Bird asked

Conditions for Quattro in "Sustain" mode

Today I noticed a Quattro 24/5000/120-2x100 with firmware Version 508 entering sustain mode. I checked and the Sustain mode is not enabled on the Advanced page of the Configure 3 setup. This system does not have solar or wind. It is a simple marine system where all charging comes from engine alternator or generator or shore power.

I was under the impression that sustain mode only was initiated in ESS systems or when enabled on the advanced page of the Quattro using configure 3.

Have I missed something here or is it possible v508 has a slight bug?

Many thanks,

Trevor

MultiPlus Quattro Inverter Chargersustain
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Alexandra avatar image Alexandra ♦ commented ·

@Trevor Bird

What battery do you have?

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Trevor Bird avatar image Trevor Bird Alexandra ♦ commented ·
Hello @Alexandra , The Batteries are 24V Fusion Pulse batteries with internal BMS.
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Alexandra avatar image Alexandra ♦ Trevor Bird commented ·
Are the batteries on (BMS not shut down in protection)?



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Trevor Bird avatar image Trevor Bird Alexandra ♦ commented ·
@Alexandra the system is working however I noticed about 3 times the VRM indicator for the Quattro state had it enter sustain for a short period. I was surprised as the Quattro does not have sustain enabled at all. I am wondering if the system can now go into sustain mode without being requested to operate with sustain mode. That seems like a problem to me as sometimes we may not want the system to ever go into sustain mode for any reason.
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nickdb avatar image
nickdb answered ·

You're positive the assistant isn't installed, even if not in use?

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Trevor Bird avatar image Trevor Bird commented ·

@nickdb yes I am positive the assistant is not installed. No assitants are installed.

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Trevor Bird avatar image Trevor Bird Trevor Bird commented ·

screenshot-2024-03-14-at-102902am.png

The VRM indicates sustain for a short period.

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screenshot-2024-03-14-at-102902am.png (60.3 KiB)