Help - over sourcing mA limits of 462
Posted: Mon May 02, 2016 10:14 pm
Asking for some help from those on this forum board who are knowledgeable when working with the BSA462 and it mA MAX limits. I’ve designed a brewing system that is probably over-engineered, but then what else has a Retired Mechanical Engineer got to do with his time.
During my first attempts to use the system, I was not able to open more than 4-5 valves at a time. Usually, this would handle any brewing process. It troubled me that I was probably going over the mA limits of the 462. Not going into how the system was wired, except to say that when I finally found the thread on this forum, titled “Max source power for the BCS462” that I knew I had to rewire the system.
I’ve attached a recent reworked and now rewired system using Solid State Relay boards. (http://www.amazon.com/Expansion-High-le ... ge_o01_s00)
to control the 13 motorized valves in the system.
I have an 115/230VAC Regulated Switching Metal Case Power Supply Adaptor Transformer 360W that provided 12VDC – 30A power for the system. (http://www.amazon.com/XKTTSUEERCRR-Univ ... ge_o09_s00) I know way more than I need, but I had it for another project so used it.
Plus, to provide 5VDC power for the BCS462 and the Solid State Relay Boards I’m using an adjustable Step-down (Buck Converter Transformer) (http://www.amazon.com/DROK-Regulator-Nu ... ge_o00_s00) Again probably overkill, but that I believe better than not having enough.
Also, would appreciate a look at the Auto-Off-On switch wiring drawing included, is it correct?
I’ve not applied power to the system since I’m not sure I the rewiring I did will not smoke the system. I would appreciate any comments or advice.
Old Geezer (jayw)
During my first attempts to use the system, I was not able to open more than 4-5 valves at a time. Usually, this would handle any brewing process. It troubled me that I was probably going over the mA limits of the 462. Not going into how the system was wired, except to say that when I finally found the thread on this forum, titled “Max source power for the BCS462” that I knew I had to rewire the system.
I’ve attached a recent reworked and now rewired system using Solid State Relay boards. (http://www.amazon.com/Expansion-High-le ... ge_o01_s00)
to control the 13 motorized valves in the system.
I have an 115/230VAC Regulated Switching Metal Case Power Supply Adaptor Transformer 360W that provided 12VDC – 30A power for the system. (http://www.amazon.com/XKTTSUEERCRR-Univ ... ge_o09_s00) I know way more than I need, but I had it for another project so used it.
Plus, to provide 5VDC power for the BCS462 and the Solid State Relay Boards I’m using an adjustable Step-down (Buck Converter Transformer) (http://www.amazon.com/DROK-Regulator-Nu ... ge_o00_s00) Again probably overkill, but that I believe better than not having enough.
Also, would appreciate a look at the Auto-Off-On switch wiring drawing included, is it correct?
I’ve not applied power to the system since I’m not sure I the rewiring I did will not smoke the system. I would appreciate any comments or advice.
Old Geezer (jayw)