fallguy
Boat Builder
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- Dec 7, 2016
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So, CZone uses NEMA for switch control interfacing (sci) to the COI. I have two 8 pack scis on the network and one digital switch box (dsb).
The Furuno instrument display FI-70 is powered only via the NEMA 2000 network and the damn thing turns on with the network I use for switch control. I don't want an auxilary display to power up on its own. So, this means my NEMA backbone needs two separate power sources. One for the COI/dc distribution just fused off the battery switch and another one switched at the helm which can also turn on selected helm devices.
so, here is what I did...
I set the second NEMA power source up, but the COI became unstable and would kickout after a minute or so.
A helpful techie told me to run two terminators on each end and one isolater, but failed to realize this was going to result in a gender change. The system works, but there is no connection between the coi and mfds, so it doesn't really work right.
I am now wondering if the only problem was using the shielding from separate sources as Furuno has a warning against grounding multiple NEMA power shields.
I plan to go retry it in a bit and remove the shielding from the added nema power cable. It was like 100F+ out there a bit ago.
Anyone have any other ideas?
Can I connect two ends of a NEMA via a drop on each one? Thinkin the techie was wrong. I'd rather not buy a gender changer if it won't work anyhow.
I will update the post if the shield change resolves the issue.
The Furuno instrument display FI-70 is powered only via the NEMA 2000 network and the damn thing turns on with the network I use for switch control. I don't want an auxilary display to power up on its own. So, this means my NEMA backbone needs two separate power sources. One for the COI/dc distribution just fused off the battery switch and another one switched at the helm which can also turn on selected helm devices.
so, here is what I did...
I set the second NEMA power source up, but the COI became unstable and would kickout after a minute or so.
A helpful techie told me to run two terminators on each end and one isolater, but failed to realize this was going to result in a gender change. The system works, but there is no connection between the coi and mfds, so it doesn't really work right.
I am now wondering if the only problem was using the shielding from separate sources as Furuno has a warning against grounding multiple NEMA power shields.
I plan to go retry it in a bit and remove the shielding from the added nema power cable. It was like 100F+ out there a bit ago.
Anyone have any other ideas?
Can I connect two ends of a NEMA via a drop on each one? Thinkin the techie was wrong. I'd rather not buy a gender changer if it won't work anyhow.
I will update the post if the shield change resolves the issue.
