Hello,
I have many NPR24 hot swappable rectifiers which were used in RF communication centres. These plug into a magazine and run in parallel to provide large currents for comms gear such as paging and LTE Transmitters.
Not Audio related however, these Switching power supplies are exceptionally well built and utilise ZVS topology as well as Power factor correction to minimise interference. The control uses a Atmel Mega32L and communicates using RS-485 modbus link (I think) communicates between the SM60 supervisory controller.
The NPR series where made back in 2007 by Powerware now bought out by Eaton.
I’ve contracted Eaton a few times regarding technical info, schematic and the modbus register map and as expected, got blown off. Can’t give information as its propitiatory line. Shame!
I feel there’s life left in these old girls and I’m finding plenty of used ones coming up on the web for not much at all. I’d like to save them from land fill or going to green waste and reverse engineering how to talk to them.
Question is, is there anyone with information about these such as register map for the modbus and schematic.
Somebody out there probably repairs them in early days.
Please PM if you can help out. Pictures attached
Cheers
I have many NPR24 hot swappable rectifiers which were used in RF communication centres. These plug into a magazine and run in parallel to provide large currents for comms gear such as paging and LTE Transmitters.
Not Audio related however, these Switching power supplies are exceptionally well built and utilise ZVS topology as well as Power factor correction to minimise interference. The control uses a Atmel Mega32L and communicates using RS-485 modbus link (I think) communicates between the SM60 supervisory controller.
The NPR series where made back in 2007 by Powerware now bought out by Eaton.
I’ve contracted Eaton a few times regarding technical info, schematic and the modbus register map and as expected, got blown off. Can’t give information as its propitiatory line. Shame!
I feel there’s life left in these old girls and I’m finding plenty of used ones coming up on the web for not much at all. I’d like to save them from land fill or going to green waste and reverse engineering how to talk to them.
Question is, is there anyone with information about these such as register map for the modbus and schematic.
Somebody out there probably repairs them in early days.
Please PM if you can help out. Pictures attached
Cheers
