The 2M2280n is a new driver that replaced the leadshine driver that everyone is familiar with (M2280) The M2280 stated 220V but in reality if you supplied it with 220V AC over a long period of time the driver would fail.
the new 2m2280n, is way better than the leadshine driver and is totally different, with a lot of new features that until recently you would only find of very expensive drivers.

It still only rectified the AC, so will not work with smaller motors, and is really only good for the largest 34 and 42 frame motors, and the downside is the heat, but if you are using good quality motors, you will be ok
When i worked at MCP we have a lot of the M2280 drivers back from customers connecting them direct online.
Even though the motors got hot, no motors were returned after failure, this is because we used quality motors.
There are a lot of motor manufactures in china and most started when a large state owned factory changed and a lot of the engineers decided to start out by themselves.
There are four manufactures in china that i would be happy working with, and the others i either have no experience of or would not touch them with a barge pole.
I have been working with Chinese motor manufactures for nearly 15 years and started off with the large state owned factory (GBM).
The problem is that a lot of so called motor manufactures are not actually manufactures and are only agents and the problems of getting the motor you ordered becomes a problem, because they shop about for better prices and motors on one order will be different on the next so that is why you need to work with a factory that is ISO 9001 and produce motors that are CE or UL.
There are not a lot of those.
If you have continuity problems with the motors you are currently buying then you are buying from an agent or a factory with no quality control, and need to change.

The ISM6045 is 5V only.

Someone asked about encoders, we have solid shaft encoders in stock, but have not had the chance to put them on our site so if you know what you need tell me and on Monday i can check stock and tell you the price.

We also have hollow shafted encoders but not as many.