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DVC-6200 SIS Positioner - Change Input Configuration

Dear Experts,

We have positioner as below.

Before replacement, our DCS is configured 4mA to full open, 20 mA to full close with DVC6010. After we replace with new DVC6200 SIS Relay C, then we want to change configure Input Range High = 4mA and Input Range Low = 20 mA in DVC6200 to avoid the reverse status with DCS and valve at site. (DCS is not allowed to changed). 

BTW, we can't change Input Range High and Input Range Low sucessful. Could you please advise me? Many thanks.

Model: DVC6200-SIS
Input: 4-20 mA
Output Signal: Single direct Relay C
Power supply; I I to 30 VDC
Air supply: 0-10 bar
Magnet Assemblies; SSTEM #100 ASSEMBLY (f00
m]n / 4 INCH)
Connections:
- Supply and output pressure gauges
- Supply Pressure: l/4" NPT intemal and integral pad for
mounting 67CFR r€gulator
- Output Pressure: l/4" FNPT
- Electrical connection: l/2" FNPT
Electrical Housing (Stainless steel housing): IP66,
Intrinsically Safe, Explosion-proof, Division 2, Dust Ignition-proof

Best Regards,

Khoi

ngovankhoi
  • Matt Stoner
    You only need to enable the "Increase to close" option on the IO_OPTS parameter for the AO block that will be sending the 4-20 mA signal.
  • Riyaz Ali
    You can reverse action through DCS, which is more common or with DVC electronically can be configured to reverse. but this will change when electrical signal to DVC is lost. If you need to have permanent reversal of air action for single acting actuator, you can use "Reverse B Relay". For double acting actuator, please change porting connection to get reverse air action. PLEASE NOTE FAIL SAFE ACTION WILL BE dictated by actuator type DIRECT or REVERSE.
  • ngovankhoi

    In reply to Riyaz Ali:

    Dear Mr. Riyaz Ali,

    Many thanks for your advise. BTW, DCS is not allowed to modify, we only change on positioner and we can't change relay because we don't have relay now.
    Key points: we can change Input Hi Current Range and Input Low Current Range in DVC 6200 but we cant' do with DVC 6200 SIS. Are there any lock inside which don't allow us to change/ re-configure.

    Many thank if you can advise me further.

    Best Regards,

    Khoi
  • Riyaz Ali

    In reply to ngovankhoi:

    Dear Mr. Khoi,
    If you are using DVC6200 SIS for safety application than device would not allow to change / re-configure. If you can provide me little background on your exact need, may be I can assist you further.
    If DVC6200 SIS is used for control than you have to make travel cut off's 0% and 100% from default value of 50%. Now DVC6200 SIS can behave as control unit. In this scenario change is possible. But please remember, DVC6200 SIS will no longer be performing safety function.
    hope this helps.
  • ngovankhoi

    In reply to Riyaz Ali:

    Dear Mr. Rijaz,

    Many thanks for your advise. My issues are below:
    - Before: Valve is used with DVC-6010. It's mean that DVC-6010 and Valve is reverse. Therefore, to achieve the operation, the DCS engineer programmed reversely to adapt.
    - After: Valve is used with DVC-6200. Therefore, the valve will not operate as operator's requirement. Meanwhile DCS program is not allowed to change anymore.
    We think about solution to change configuration in DVC-6200 SIS to help valve to work correctly (not reverse with operation purpose).

    Best Regards,

    Khoi
  • Truyen

    In reply to ngovankhoi:

    Dear Khoi,

    For this case, please confirm that the control /valve operation is ok ? you only have issue with the feedback at DCS ?

    Thank
  • Riyaz Ali

    In reply to Truyen:

    Dear Mr. Khoi,
    Was the DVC6010 for control application?
    If you don't mind, can i have your email address to understand your needs more clearly.
  • ngovankhoi

    In reply to Riyaz Ali:

    ngovankhoi@gmail.com

    Thank Truyen. Please give your phone number then we can discuss directly.

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