Mitsubishi Electric FX5 User Manual page 85

■Operation characteristics (in an example of backward operation)
During the "τW" period after the tuning cycle is finished, the output value is held at the output Lower Limit Value (LLV), and
then normal PID control is started. The value "τW" can be obtained by the expression "τW = (50 + KW)/100 × (τ - τon)", and
the wait setting parameter "KW" can be set in the parameter (s3)+28. (Setting range: Kw = -50 to +32717 [%]) (When the
abnormal range is specified, "τW" is handled as "0")
Output value (MV)
Output upper
limit value (ULV)
Output lower
limit value (LLV)
Input value
SV+SHPV
SV (target value)
SV-SHPV


on
  
0 1 2
SHPV: PV Input threshold (hysteresis)
a

W
10 PID CONTROL FUNCTION
10.7 Auto-Tuning
10
Time
Time (s)
83