Recent Control & Safety Systems Discussions
Similar Posts
Controller Status
Batch Authorization Status
Mode – The Role of Status
DeltaV Node Status
cold restart statues
Share

run status

hi,

i have a dc function block and want to control it by a DO signal that the name is RUN STATUS. when it's 1, want to have RUNNING on PV_D and when change it to 0, PV_D equal to STOPPED. what shall i do? help me

Anonymous
Anonymous
  • Anonymous
    Anonymous
    is it true that connect this DO to SP_D of DC function block?
  • gamella

    In reply to Anonymous:

    It's not clear for me why to use a DO output to control a DC. Maybe you mean a you have a digital input (DI) having motor RUN STATUS on field??

    I suggest not to write into SP_D of a DC becuse DC itself writes on it on some circumstances and this will lead to unexpected behavior.
  • Anonymous
    Anonymous

    In reply to gamella:

    yes, i have a DI as run status! when it's 1, it means my device is on running. unfortunately i can't change device condition to running or starting. it's just STOPPED.
    how can change this state?
  • gamella

    In reply to Anonymous:

    OK, that RUN STATUS is motor running confirmation, or do you have a separated signal for that?
    That motor will be controlled from field only or must be operable from DCS as well?

    You can use TRACK_IN_D. First enable TRACK IN in DC Control Options parameter.
    When TRACK_IN_D is active (1) you DC will set it's state to match field state (as configured on DC State_Mask parameter).
  • Anonymous
    Anonymous

    In reply to gamella:

    yes, it's motor running confirmation. this motor will be controlled from field and by operator.
    i did that (active TRK_IN_D), but nothing to do
  • Steve Linehan
    You should use a DI block with the On/Off words as Running and Stopped. 
    If you have to use a DCD block for some reason configure the DCD with IN1 as your field DI. Set the DCD mask so that all inputs and outputs except IN1 are don't care. Then the DCD will show the motor as running or stopped depending on field value.

    Steve Linehan
    +91-7675956337

This is the official online community site of the Emerson Global Users Exchange, a forum for the free exchange of non-proprietary information among the global user community of all Emerson Automation Solution's products and services. Our goal is to improve the efficiency and use of automation systems and solutions employed at members’ facilities by sharing our knowledge, experiences, and application information.

User Groups | World Areas | Community Guidelines | Legal Information | Privacy Policy | Contact Community Manager

Website translation provided by Website Translator

© 2015-2022 Emerson Global Users Exchange. All rights reserved.