Instructions
9.2 PID_3Step
PID control
Function Manual, 03/2017, A5E35300227-AC
311
In automatic mode and during commissioning, the reaction to error depends on the
ErrorBehaviour and ActivateRecoverMode tags. In manual mode, the reaction is
independent of ErrorBehaviour and ActivateRecoverMode. If ActivateRecoverMode = TRUE,
the reaction additionally depends on the error that occurred.
Configuration editor
> actuator setting
> Set Output to
FALSE FALSE Current output value Switch to "Inactive" mode (State = 0)
The actuator remains in the current
FALSE TRUE Current output value while
error is pending
Switch to "Error monitoring" mode
(State = 7)
The actuator remains in the current
position while the error is pending.
TRUE FALSE Substitute output value Switch to "Approach substitute output
value" mode (State = 5)
The actuator moves to the configured
substitute output value.
Switch to "Inactive" mode (State = 0)
The actuator remains in the current
TRUE TRUE Substitute output value while
error is pending
Switch to "Approach substitute output
value with error monitoring" mode
(State = 8)
The actuator moves to the configured
substitute output value.
Switch to "Error monitoring" mode
In manual mode, PID_3Step uses ManualValue as output value, unless the following errors
occur:
● 2000h: Invalid value at Feedback_PER parameter.
● 4000h: Invalid value at Feedback parameter.
● 8000h: Error during digital position feedback.
You can only change the position of the actuator with Manual_UP and Manual_DN, not with
ManualValue.
The Error parameter indicates whether an error has occurred in this cycle. The ErrorBits
parameter shows which errors have occurred. ErrorBits is reset by a rising edge at Reset or
ErrorAck.
Parameters State and Mode V2 (Page 330)
Parameter ErrorBits V2 (Page 335)
Configuring PID_3Step V2 (Page 116)
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