JamesF Posted April 19, 2022 Posted April 19, 2022 Hi All, Can you help me here - just got a 2nd hand "Solar Inverter" (that is the branding on it) Unit seemingly works 100% for load shedding. No Solar. (4x12v, 110ah each) Model is M500H-48. Pretty generic. The firmware versions: 001 06 424 000 00 000 My 2 Questions: 1. Is there a firmware for this unit that I can load? 2. The unit goes between, charge, float and bypass continuously.. like 10min on float, 2min on charge (voltage will kick up) then bypass. (The unit always has output, and you can interrupt at any stage, and it will kick over to batteries no worries. (Does this suggest my batteries are dead, and cannot hold change (hence it going into charge mode?) OR, do I have a setting incorrect? PS - batteries seem ok, as they can power all my needs for +6 hours. (longest test.) Thanks!! Quote
JamesF Posted April 19, 2022 Author Posted April 19, 2022 Oh and just to add - I cannot seem to get my PC to connect to the device (with any app) I only have 1 USB port on my laptop, so cannot choose different COM ports... Quote
Coulomb Posted April 20, 2022 Posted April 20, 2022 23 hours ago, JamesF said: 1. Is there a firmware for this unit that I can load? I really doubt it, but you never know what others might happen to have. 23 hours ago, JamesF said: The firmware versions: 001 06 424 000 00 000 Nothing that I recognise, but there must be so many different UPSs out there. 23 hours ago, JamesF said: The unit goes between, charge, float and bypass continuously.. like 10min on float, 2min on charge (voltage will kick up) then bypass. It sounds odd to me, and to me bypass means that the loads are powered by utility. Is that what's happening? Relays click, lights flicker every 20 minutes or something? 23 hours ago, JamesF said: batteries seem ok, as they can power all my needs for +6 hours. (longest test.) That's the acid test, so to speak. Any idea what voltage they are at after 6 hours of running loads? You don't want to let either 12 V module fall below 12.0 V, and preferably not below 12.5 V, for them to last. I know it seems wrong not to use all that seems to be available, but if you don't want to be buying batteries every 2 months, this is what you have to do. Quote
JamesF Posted April 21, 2022 Author Posted April 21, 2022 16 hours ago, Coulomb said: Thanks Coulomb, It sounds odd to me, and to me bypass means that the loads are powered by utility. Is that what's happening? Relays click, lights flicker every 20 minutes or something? Yes, that is correct. (It will only do this while on utility power.) However, if I add load, the fans do ramp up. 16 hours ago, Coulomb said: That's the acid test, so to speak. Any idea what voltage they are at after 6 hours of running loads? You don't want to let either 12 V module fall below 12.0 V, and preferably not below 12.5 V, for them to last. I know it seems wrong not to use all that seems to be available, but if you don't want to be buying batteries every 2 months, this is what you have to do. Agreed - after prolonged use, low loads, the voltage stays above 50v.. very rarely have I seen it drop below 50v. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.