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21 Cards in this Set
- Front
- Back
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delay time for process to react is
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dead time
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what is "mo" contoller bias
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output of controller when error exists
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type of feedback used in control systems
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negative feedback
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what happens in first order system when frequency increases
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decrease pv and K. increase phase shift
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controlled variable
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the physical quantity being controlled
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Typical gain settings for a flow loop
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.5 and 10
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which systems are used to model multi capacity system
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first order + dead time
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which mode of a controller responds to both setpoint changes and disturbance
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automatic PD
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closed loop plant gain
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KcKp/1+KcKp
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which controller in cascade can achieve reset windup
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Both
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which controller modes have manual bias
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P only (online)
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the lag after a disturbance is
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dead time
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Bias spring / output of a controller when no error exists
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manual bias
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model of multi capacity process
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FOPDT Ke-dt/ 1+T1
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closed loop gain
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prces gain * controller gain divided by 1+ process gain* controller gain
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Controller action diagram?
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both reverse acting
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when setting up selective control what relay
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overide low select
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how to prevent reset windup
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P Only if process
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what type of process will continue to ramp after a load change
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Proportional / integrating/ capacitance
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Advantage of cascade
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recovery time / better handle / reduce non linearity
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amount of light annualized due to fluid obsorbtion
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Opacity
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