eebads2391
Member
Hi
Does anyone have a drawing of a circuit that will reduce the 4-20ma signal coming from a controller into another unit
We have a controller that puts out a 4 - 20 ma signal to a thristor drive, that in turn controls a transformer fed heating bank , I need to find a drawing of a circuit that would go in between the output of the controller and the input of the thyristor that would limit the output when the machine first starts up
I believe you can use a variable potentiometer positioned in between the two units , I just dont know how it should be wired and what value resistance
It would be used as a power limiter on start up , to prevent the heating elements starting too quickly from rest
I did a search but could not find a reference to it
All help greatly appreciated
Does anyone have a drawing of a circuit that will reduce the 4-20ma signal coming from a controller into another unit
We have a controller that puts out a 4 - 20 ma signal to a thristor drive, that in turn controls a transformer fed heating bank , I need to find a drawing of a circuit that would go in between the output of the controller and the input of the thyristor that would limit the output when the machine first starts up
I believe you can use a variable potentiometer positioned in between the two units , I just dont know how it should be wired and what value resistance
It would be used as a power limiter on start up , to prevent the heating elements starting too quickly from rest
I did a search but could not find a reference to it
All help greatly appreciated