2600MC Pro disconnection issues - Forums

Topic starter

3 hours ago

Hi all,

Having an issue with disconnects every since getting a new 2600MC Pro.

I am using an ASIAIR Plus and have had over a year of use with a DSLR without this issue ever occurring.
This my 3rd night of using a new 2600MCP and on each night have had random disconnections happening.

Connections are as follows:

EQ6R-Pro on separate power supply.
ASIAIR & camera both on their own supple on night 1,
Camera powered through 12V ASIAIR output on Night 2 & 3
120mm Mini guide cam connected to ASIAIR USB port

The first night, the guide camera disconnected and gave the error message in the image below.
I assumed a bad USB cable so I swapped it out with a new one which I had.

Seemed to work ok for the rest of the night.

The 2nd night the same problems happened again but this time I noticed that the cooling had stopped on the camera at the same time as the guide camera disconnected. So I swapped out the power supply to a brand new ZWO 12V 5A one and connected the camera to the ASIAIR power port instead of it's own supply.

That worked for the rest of that night.

However here we are again tonight and these disconnections have happened 3 times already. Guide camera and cooling. Only switching off and on power to the camera in the app allowed them to reconnect.

The app version is 2.4.4(12.73)

Does anyone have any ideas? I assume it must be somehow related to the camera, given that the problems only started when I included it in the setup.

After spending so long saving for this camera, it would be rather depressing to think it was faulty
Many thanks in advance.

📷 IMG_1572.PNG

Helpful Engaging

Brian Puhl

IOTD Staff

2 hours ago

I’m sure someone is probably going to pipe in and suggest you might be introducing a ground loop feedback issue. I’m not saying this isn’t possible but I figured I’d pipe in and say I run two systems with seperate power supplies for my mounts and have never had an issue with ground loop. YMMV. It couldn’t hurt to try and get the EQ6 on the same power source as the rest of the system.

Beyond that, I’d keep an eye on the actual voltage of the system, look for droop. Also, could you possibly be overloading the USB bus with other devices? I’m not sure what the USB bus is rated for current-wise but I’m sure it’s not low.

Helpful Concise

John Walsh

Topic starter

2 hours ago

Thanks Brian. Forgive my ignorance but how would I be introducing a ground loop? By having the (Camera, ASIAIR) & Mount on different DC power supplies?

Well Written Respectful

ausablebrooktrout

New contributor

1 hour ago

I have experienced with with the 2600MC Duo when I used the mount to provide power to the camera and the rest of the system. I believe this was due to under-powering the camera. When I added a separate power supply for the camera, the problem resolved. I believe that the problem is intermittent due to peek power supply loads that intermittently go above the required current. I have had the disconnection problem with the thermoelectric cooler power requirement goes up and have had this problem when the mount does a meridian flip. Both of which increase peak current draw.

Helpful Concise

wsg

15 minutes ago

You absolutely need two separate 12V power supplies.

One for the camera

One for everything else

There is very weak documentation in ZWO literature for all cooled cameras requiring this.

“Please notice that the camera needs to be connected to an external 11-14v power supply to implement the cooling function. We recommend you use 12V@3A DC adapter (5.5*2.1mm, center pole positive) or lithium battery with 11-14V to power the camera. If you don’t have one, please click here to buy a 12V power adapter. There are 4 different standard for different countries, please make sure you selected the correct adapter when placing the order.”

https://www.zwoastro.com/product/asi2600/