ACD320 user manual Parameter Description
- 90-
interference.
Function Code Name Setting Range
Default
Value
F4.25 Sampling cycle time (T) 0.01～100.00s 0.10s
F4.26
PID control discrepancy
limit
0.0～100.0% 0.0%
Sampling time (T): is the time to sample the feedback value. In each sampling period the
controller runs one time. The longer the sampling time, the slower the responding.
PID control discrepancy limit: the allowable maximum discrepancy of PIDsystem output
value relative to the closed-loop assigned value.As shown in following diagram,within the
discrepancy limit, PID controller stops adjustment. Properly setting this function code can
improve the accuracy and stability of PIDsystem.
Fig. 6-19 Coincidence relation of discrepancy limit and output frequency
Function Code Name Setting Range
Default
Value
F4.27 Feedback disconnection
detecting value
0.0～100.0% 0.0%
F4.28 Feedback disconnection
detecting time
0.0～3600.0s 1.0s
Feedback disconnected detecting value: this detecting value is relative to the full range
(100%).
The system detects the PID feedback value all the time.When the feedback value is less or
equal to the feedback disconnected detecting value, the system starts to time the detection.When
To Next Page
Loading...
General