Fisher DVC6200
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When the control system sends a 0% signal to the valve positioner, the valve is in the open position; at 100%, it is in the closed position. How to set the locator so that the control unit sends a 0% signal to keep the valve in the closed position? ? ? Do not modify the forward and reverse actions of the central control unit
You can check the settings of the locator and use the handheld controller to view the relevant parameters.
The positive and negative feedback of the locator should also be adjustable
This requires modifying the forward and reverse action at the engineer station; Hart doesn’t have a menu for modifying forward and reverse action, right?
I couldn’t find the menu to adjust the forward/reverse action for the DVC6200;; could there be some kind of write protection in place?
Manual setup — outputs — transMitter outputs: Change the valve feedback to on or off when 4ma is set
1. In the configure menu, select manual setup. 2. Within manual setup, choose outputs. 3. Select transMitter outputs 4mA-value close. 4. After making the settings, select send
There are generally two methods. In one case, the output of the central controller is inverted; in this case, it’s not the control signal that is inverted, but rather the output of the AO. The other method involves inverting the range values within the locator, such that the upper limit becomes 0 and the lower limit becomes 100. I haven’t tried it with the DV6200, but I have tried it using the DV6000
It only means that the air outlet of your locator is installed in the wrong direction.
Change the signal to Direct or Reverse from the HART communicator device
Ensure that the gas supply pipeline is connected correctly; after connecting, go to \"Out of Service\", then in the configuration select \"Transmitter Outputs 4mA-Value Close\", save, and send. Finally, remember to restore to in serves. Give it a try!