Hey
I have a AC/DC converter that converts the mains to 300vDC. This is connected to a DC/DC converter for 24Vdc 250W PSU. What i need to do is
place the second brick into a shut down mode to prevent it from heating when the machine it is running is in standby. I also want to be able to do this
with the same PLC that controls the machine therefore when i shut down the second brick i still need power to the PLC to monitor the status of inputs such as a keypad, whereby it would then switch back on the second power supply.
My idea is to use the first brick (230vAC to 300vDC) to supply power to the PLC at all times. Shutting the PSU of completely woul be a last ditched effort and using a fan to keep it cool isn't an option. I have found alot of options for 1W to 2W DC/DC converters that will take input voltages up to 70vDC and give you anything from 5vDC to 24vDC, however i need something to reduce the 300vDC output first or a low power DC/DC converter that will take the 300vDC.
Has anyone any ideas where i should look or how i can reduce the 300vDC to say 70vDC?
Thanks
I have a AC/DC converter that converts the mains to 300vDC. This is connected to a DC/DC converter for 24Vdc 250W PSU. What i need to do is
place the second brick into a shut down mode to prevent it from heating when the machine it is running is in standby. I also want to be able to do this
with the same PLC that controls the machine therefore when i shut down the second brick i still need power to the PLC to monitor the status of inputs such as a keypad, whereby it would then switch back on the second power supply.
My idea is to use the first brick (230vAC to 300vDC) to supply power to the PLC at all times. Shutting the PSU of completely woul be a last ditched effort and using a fan to keep it cool isn't an option. I have found alot of options for 1W to 2W DC/DC converters that will take input voltages up to 70vDC and give you anything from 5vDC to 24vDC, however i need something to reduce the 300vDC output first or a low power DC/DC converter that will take the 300vDC.
Has anyone any ideas where i should look or how i can reduce the 300vDC to say 70vDC?
Thanks