Answer / rajendra singh

In DCS 4 TYPES OF SIGNAL IS USED

1) AI - ANALOG INPUT THIS FEED BACK SIGNAL FORM (4 - 20 mA)
2) AO - ANALOG OUTPUT COMMAND GIVEN FROM DCS (4 - 20 mA)
3) DI - DIGITAL INPUT (FEED BACK 0 OR 1, HIGH OR LOW)
4) DO - DIGITAL OUTPUT (PICK UP THE RELAY 0 OR 1, HIGH OR
LOW COMMAND GIVEN FROM DCS)

Answer / ashish khatana

1) AI - ANALOG INPUT THIS FEED BACK SIGNAL FORM (4 - 20 mA)
2) AO - ANALOG OUTPUT COMMAND GIVEN FROM DCS (4 - 20 mA)
3) DI - DIGITAL INPUT (FEED BACK 0 OR 1, HIGH OR LOW)
4) DO - DIGITAL OUTPUT (PICK UP THE RELAY 0 OR 1, HIGH OR
LOW COMMAND GIVEN FROM DCS)
5) T/C INPUT- FOTR THERMOCOUPLE
6) RTD INPUT- FOR RTD
7) THIRD PARTY COMMUNICATION- LIKE PLC INPUT OUTPUT,
CONTROLLER INPUT OUTPUT (IT IS DIFFERENET FOR DIFFERENT DCS)

Answer / khurshidmallick0786@gmail.com

Khurshidmallick0786@gmail.com

Answer / farhan

Dcs  under  stand  just 1 to  5  volts  therefore 1---5volts enters in  it.there  is  a  currernt  to  volt  converter available  in  dcs.

what is the working principle of hydra step(electronic level indicator)?

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what is power factor?

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3 Answers  

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