Process/Speed Pid Control; Select The Pid Mode; Specify The Process Reference Value - Toshiba ASD 9 Series Manual

Figure 3. Diagram for F359 = Position PID.

Process/Speed PID Control

Select the PID Mode

Select the PID mode at parameter
Position PID is addressed specifically in

Specify the Process Reference Value

Select the feedback input at
desired process variable output. The commanded frequency and actual output frequency may not
always be the same because it is only the value of the process variable that is the basis of the feedback
response.
Example: Set the Process Reference Value With an External Signal.
An example of a process reference value set with an external signal is shown on the next page.
The desired process output is 15 psi.
A process reference value of 5 V will produce a process output of 15 psi. This process reference value
of 5 V corresponds to a frequency command of 40 Hz.
The process feedback is input at the V/I terminals. The ASD parameters F201 – F204 are set so a
feedback value of 12 mA from the pressure transducer corresponds to a frequency command of 40 Hz.
Input the frequency set points and associated process values. Set the maximum frequency to 80 Hz.
Parameter settings:
F004 = RR Input
F201 = 20%
F210 = 0%
2
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Position Completion
Range
Position
Reference
Value
Position
Completion Range
Feedback Signal
F359 and the PID feedback source at parameter F360.
Simple Position PID Control on pg. 6.
F004 and F207. Adjust the process reference value (set point) to deliver the
F360 = V/I Input
F202 = 0 Hz
F211 = 0 V
F381
PID Control
F381
F011 = 80.0 Hz F012 = 80.0 Hz
F203 = 100% F204 = 80 Hz
F212 = 100% F213 = 10 V
Figure 4.
PID Control Manual