fisher dvc6020f relay b
fisher dvc6020f relay b
(OP)
The company I work build valves and actuators.
I believe we are purchasing the wrong relays on fisher dvc6020f positioners.
We are calibrating the positioners using hart 375 communicator.
We cannot reverse the 4-20ma signal so the valve is closed at 4milliamps instead of open.
There are relays a,b and c.
Is there a way using the 375 communicator to reverse the 4-20ma signal or is that the purpose of the different relays available.
I believe we are purchasing the wrong relays on fisher dvc6020f positioners.
We are calibrating the positioners using hart 375 communicator.
We cannot reverse the 4-20ma signal so the valve is closed at 4milliamps instead of open.
There are relays a,b and c.
Is there a way using the 375 communicator to reverse the 4-20ma signal or is that the purpose of the different relays available.





RE: fisher dvc6020f relay b
If you plug the communicator onto the DVC you should see all available things that can be selected. I used a laptop with AMS software for this task instead of the hand held communicator. The laptop lets you see everything at once. You should also see the choices in a manual that can be downloaded from the web.
The problem with reversing the action on a positioner is that you establish one failure position for loss of the electrical signal that is opposite the air failure. Selecting the right actuator is better.
RE: fisher dvc6020f relay b
Go: ONLINE ==> Setup ==> Basic Setup ==> Manual Setup ==> Press & Actuator ==> Feed back Connection
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