Answer Posted / ponnuswamy balakrishnan
It doesn't matter which brand of PLC you are hanldling
with. You should know the basics of electrical circuits and
able to read circuit drawings perfectly. PLC perform the
programme what we write for a specific objective.If it
ackowledges the inputs signals ( Sensors,switches etc)it
will automatically give o.k for output( motors and
temp.controllers etc.).So first check the input & output
signals in the plc for the broke down circuit. If it is
o.k.then proble should be in the hard wire line. May be the
wire groundeded or the defective component.
Is This Answer Correct ? | 7 Yes | 2 No |
Post New Answer View All Answers
how to convert cubic metre per hour to newton cubic metre per hour
What is force balance principle? State some of its’ advantages.
Why humidity limit is 30 to 55 % for raw material storage?
What is the purpose of the analyzer in petrochemical plant?
send me HPCL paper
What is intrinsic safety mean.
send me model hpcl questions pleas..........my mail id mohideen.dharvesh@gmail.com
How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?
what is the difference between attemperator and desuperheater ?
Can please tell mi about SIOS, PRM, SERVER, and what is the diference between PIN LAN, PCS LAN,APC Server, and please send the Doc if possible for referance,mail id patil_amit17@yahoo.com
what are the steps I have to deal with?
what is the procedure of belt scale calibration?
Please any one can provide latest aptitude test,technical test and interview questions for tata consulting engineering (TCE) i need it asap thanks in advance
how will you check torque value during Factory acceptance Test for control valve/ESD ON/OFF VALE how will you confirm this torque value is being correct, Which document will you be refer.
principle of dead weight tester ?