B&R 8I84T200037.01P-1, Руководство пользователя

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Programming guidelines
ACOPOSinverter P84 User's Manual 2.10 235
2.8.11.17 PID controllers
2.8.11.17.1 Overview
The function is activated by assigning an analog input to the PID feedback (measurement).
Internal
Reference
Reference A
Encoder
Comm. Al
Reference
manually
Preset PID
Scaling
Ramp
Preset manual references
Preset
Speed reference
Ramps
Gain
Return of
Deviation
Threshold of the
deviation at restart
(Wake-Up)
Auto/Manual
Al2
Actual value
PID
Reference
1) Ramp AC2 is only active when the PID function starts up and during PID wake-ups.
Legend:
Parameters: The black rectangle corresponds to the factory setting.
PID- feedback:
The PID feedback must be assigned to one of the analog inputs AI1 , AI2 or to the encoder.
PID reference:
The PID reference must be assigned to the following parameters:
• Preselected reference values via logic inputs ( rP2 , rP3 , rP4 )
•
In accordance with the configuration of [PID initial ref] (PII)
– Internal reference (rPI) or
– Reference A ( Fr1 or Fr1b )
Combination table for preset PID references:
LI (Pr4) LI (Pr2) Pr2 = (nO) Setpoint
rPI or A
rPI or A
rP2
rP3
rP4
0
1
1
0
0
0
1
1
A predictive speed reference can be used to initialize the speed on restarting the process.