5.8.2 Pre-PID Operation
When an operation command is entered that does not include PID control, general
acceleration occurs until the set frequency is reached. When the controlled variables
increase to a particular point, the PID operation begins.
Pre-PID Operation Setting Details
When general acceleration is required without the PID control, enter
the frequency up to the general acceleration. If Pre-PID Freq is set to
30 Hz, the general operation continues until the control variable (PID
feedback variable) set at AP.35 is exceeded.
When the feedback variable of the PID controller is higher than the
value set at AP.35, the PID control operation begins. However, when a
value is set for AP.36 (Pre-PID Delay) and a feedback variable less
than the value set at AP.36 is maintained for a set amount of time, the
“pre-PID Fail” fault trip will occur and the output will be blocked.
5.8.3 PID Operation Sleep mode
If the operation continues at a frequency lower than the set condition for PID operation,
the PID operation sleep mode starts. When PID operation sleep mode starts, the
operation will stop until the feedback exceeds the parameter value set at AP.39 (PID
WakeUp Lev).
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