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When I connect my Global link 500 to the Victron 150/35 mppt controler , tracking becomes unstable and after a minute or less the power drops to 0 Watts, even in full sunshine. A minute or so later it recovers, starts tracking again only to repeat te same pattern after a short time. The global link works perfectly and I don't see anything wrong with the smartshunt either. When I disconnect the mppt from the global link tracking returns to its normal operation. Any ideas what this may be?
That is an unusual problem indeed, having a GlobalLink connected to the MPPT should not have any effect on its operation. My best guess would be some kind of electrical issue; for example a damaged VE.Direct cable or perhaps a damaged port on the GlobalLink causing a short-circuit or other interference.
Can you check swapping the VE.Direct cable and the port used on the GlobalLink to see if the cable/port in question works correctly with your SmartShunt / the MPPT works correctly on the other cable/port?
Thanks for the advice but since yesterday the Global Link device stopped functioning completely. No blinking led, no data transmitted. It's brand new and only functioned normally for a few days. .I guess I'll have to turn it in.
