Answer Posted / ramesh
proportional =output/input
gain is inveresly proportional (p)
for example p=50 means setpoint =50 the pv varies the 25%
above& below the setpoint that is Gain =1/50 = 0.02x100= 2
setpoint /gain that is 50/2 =25 so pv varies from 25%to
75%
intergal the time which to reachthe 25%to 75% is called
intergal if you set I= 10 means it will reach 10 sec
derivative generally D is used for only temperature loop
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