irondesk40
Member
Been working on a servo project but have had the project to control temperature using a allen bradley temperature controller to control temperature instead of Fuji temperature controller come up again. I have orderd the Allen bradley thermocouple input card and can read the temperature thanks to info posted on this site from some earlier questions i asked.
Another question i have is what would be the best approach to use to control a output that will be used to turn on a solid state relay? I had planned on using a analog solid state relay but due to cost that will not happen. Was told by boss to use the same solid state relays we have used which use a 3-32 volt input signal. I had planned on setting up a pid loop to control the temperature by a analog signal to the analog solid state relay. Once i read the teperature in with the thermocouple card in the allen bradley and if the temperature does not equal the desired set temperature would it work okay to do a compare statement to compare the actual temp to the desired temp and then start pulsing a regular output that would be used to control the solid state relay that is looking for a 3-32 volt signal? Would it be best to use a transistor output? if not, seems to me that the relay output on the allen bradley output card would not hold up very well in the long run.
Any advice would be greatly appreciated. Thanks
Another question i have is what would be the best approach to use to control a output that will be used to turn on a solid state relay? I had planned on using a analog solid state relay but due to cost that will not happen. Was told by boss to use the same solid state relays we have used which use a 3-32 volt input signal. I had planned on setting up a pid loop to control the temperature by a analog signal to the analog solid state relay. Once i read the teperature in with the thermocouple card in the allen bradley and if the temperature does not equal the desired set temperature would it work okay to do a compare statement to compare the actual temp to the desired temp and then start pulsing a regular output that would be used to control the solid state relay that is looking for a 3-32 volt signal? Would it be best to use a transistor output? if not, seems to me that the relay output on the allen bradley output card would not hold up very well in the long run.
Any advice would be greatly appreciated. Thanks