I am looking for a 32 channel board that I has 32 inputs (24VDC) that directly control 32 outputs (24VDC) using solid state components such as mosfets or solid state relays that have a high speed switching capability. I would also be interested in optocoupler isolation on each channel. Is there such a product out there or is this something that I would have to design one-off and get pre made through JLCPCB or PCBWAY??
32 channel Mosfet board??
- Thread starter JodyBoehs
- Start date
whitebengal
Member
Check AliExpress for Modbus 32-channel input and 32-channel output modules. To connect the Teensy to the modules, you will need either RS232 or RS485 signal drivers. Higher channel counts tend to be NPN. There is a 64-in/64-out module.
I dont want a PLC IO board that communicates via Modbus or whatever. I need a board that allows me to apply 24vdc to input 1,2,3,etc. and output 1,2,3,etc. energizes a mosfet or solid state relay that I can run 24vdc through. Anything out there like that?
I found this one ... But not sure it does what I want...
Last edited:
BriComp
Well-known member
That uses ModBus, it says it in the title.
BriComp
Well-known member
Perhaps it would help if you describe what you are trying to do, I know you want to read inputs and control some outputs but you have not said anything about time for readings/switching etc.
Please describe the problem you are trying to solve or what you are trying to control and maybe we can give you better help.
The more info you give the better support you are likely to get.
Please describe the problem you are trying to solve or what you are trying to control and maybe we can give you better help.
The more info you give the better support you are likely to get.
I am designing a large control system for a series of conveyors. This system have approx. 18-22 Emergency Stop buttons that are spread out over the entire system. These E-Stop buttons are illuminated with an LED.
I realize most systems (and the easiest way) just use a NO contact on the button to illuminate it when pressed.
The safety controller I have specified has a lot of 'bells and whistles' on it. It allows me to use a status bit to monitor the E-Stop signals.
Using this status bit, Even if an E-Stop is NOT pressed and there may be a wiring issue, I can blink the LED on the corresponding E-Stop to tell me where the issue is.
So, with that said, I am using an output card on my PLC that has 32 output points that will control these LEDs. I was wanting a board or something to send those signals to that would isolate the LEDs and field wiring from the PLC Card to prevent a short from burning out an output on the PLC Card.
This is why I was wanting a board that I can use the 32 inputs to directly control the 32 outputs without going through a communication protocol that would create latency. I would like to have solid state components on it instead of mechanical relays so I can send it a higher flash rate (100ms, 200ms, up to 1000ms). Hope this helps clarify what I need.
I realize most systems (and the easiest way) just use a NO contact on the button to illuminate it when pressed.
The safety controller I have specified has a lot of 'bells and whistles' on it. It allows me to use a status bit to monitor the E-Stop signals.
Using this status bit, Even if an E-Stop is NOT pressed and there may be a wiring issue, I can blink the LED on the corresponding E-Stop to tell me where the issue is.
So, with that said, I am using an output card on my PLC that has 32 output points that will control these LEDs. I was wanting a board or something to send those signals to that would isolate the LEDs and field wiring from the PLC Card to prevent a short from burning out an output on the PLC Card.
This is why I was wanting a board that I can use the 32 inputs to directly control the 32 outputs without going through a communication protocol that would create latency. I would like to have solid state components on it instead of mechanical relays so I can send it a higher flash rate (100ms, 200ms, up to 1000ms). Hope this helps clarify what I need.
Yeah I don't need a Teensy or wasn't even that familiar with them. I heard of them but that's about it. I just figured a community forum like this would be able to tell me more or guide me to what I needed. I apologize for being a bother on a forum not intended for what I needed. I just knew boards like that may be used with microcontrollers such as Teensy or Arduino. I know my PLC Card has speeds that are fast enough for what I need, but I was mainly looking for something to isolate the circuits. I guess I could get a single channel isolation board or something like that and just get 32 of them LOL. This also may be my chance to experiment with designing a board and getting it built.
whitebengal
Member
Search for PLC output amplifier. You want a 3.3 VDC input to a 24VDC output. I think they go up to 32 channels. It's just a lot of wiring, unfortunately.