What is an analog input - output , digital input

What is an analog input - output , digital input - output .
Any example ???? How they r known its ai-ao or di - do

Question Posted / rathwa

4 Answers
35455 Views
Torrent Pharma, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What is an analog input - output , digital input - output . Any example ???? How they r known its ..

Answer / barok

AI- means input of 4-20mA comes from transmitter to DCS
AO- means output of 4-20mA comes from the controller on DCS
DI- means input of 0 and 1 comes from switch to DCS
DO- means output of 24VDC come from DCS going to solenoid.

Is This Answer Correct ?

47 Yes

8 No

What is an analog input - output , digital input - output . Any example ???? How they r known its ..

Answer / mahmoud zaki

EX. DI like sensor.limit switch and bush bottom
DO like to run for example motor
for contactor or relay or solnid valve

AI like level transmitter or pressuer transmitter TC
AO like control valve

Is This Answer Correct ?

22 Yes

0 No

What is an analog input - output , digital input - output . Any example ???? How they r known its ..

Answer / sudarshan sankapal

AI means field genarated signals comeing to Dcs or PLCs by the use of 24v DC suppy... ex sensors
AO means DCs or PLC genarated or field genarated signals going to control process parameters...ex control valves input 4 to 20ma
DI its logic signal 0 or 1 state came from electrical VFD drives or field...
DO its logic signal genarated in DCs to control feild process parameters..ex solenoid valves

Is This Answer Correct ?

13 Yes

0 No

What is an analog input - output , digital input - output . Any example ???? How they r known its ..

Answer / mayursinh amw

A0 means analog voltmeter, supply come from AO cardto volt
meter

Is This Answer Correct ?

3 Yes

13 No

Post New Answer

More Instrumentation Interview Questions

why the SCAN time of DCS is more & that of PLC is less? if the SCAN time of DCS then why we use DCS.

4 Answers

what is pneumatic control system?

1 Answers APL,

what is shutoff dp? why is it important for selection of a control valve?

1 Answers

Why rdt and thermocouple both give different output .and one things more, how to generate ohm or mili volt plz mail me merajalam143545@yahoo.com

0 Answers Samsung,

What is difference between scada and virtual instrumentation?

1 Answers

what is the role of proportional in process control?

6 Answers OGDCL, Trident,

Why mixer nd grinder Is example of constant torque load not variable torque load ???

0 Answers

what is meant by Hydroelectric powerplant?

0 Answers

diff between neutral ,ground,phase , earthing and shielding?

0 Answers L&T,

What is the start up procedure of desalter

0 Answers Reliance,

Shall we get the reading on level transmitter only by termination,without commissioning?

1 Answers

In most process, speed of motor controlled by control system with a reference pot . Now if i start & it becomes uncontrollable, i.e.gets directly start & stop after certain time.Then which reasons can make such problem? can motor may be faulty?how?

3 Answers Siemens,

For more Instrumentation Interview Questions Click Here