Delta AS Series Programming Manual page 756

Operand Data type
Kc_Kp REAL
Ti_Ki REAL
Td_Kd REAL
Tf REAL
BOOL
PID_EQ
Function
Calculated proportional
coefficient (Kc or Kp,
according to the settings in
PID_EQ)
Integral coefficient (Ti or Ki,
according to the settings in
PID_EQ)
Derivative coefficient (Td or
Kd, according to the settings
in PID_EQ)
Derivate-action time constant
PID formula types
Cha p ter 6 App l ied Ins truc tio ns
Setting range Description
SV is in the range
of± dead band
width
If the P coefficient
Range of
is less than 0, the
positive single-
Kc_Kp is 0.
precision Independently, if
floating- Kc_Kp is 0, it is
not controlled by
point numbers
P.
Range of If the calculated
positive single- coefficient I is
less than 0, Ti_Ki
precision
is 0. If Ti_Ki is 0,
floating-
it is not controlled
point numbers
by I.
(unit: Ti = sec; Ki
= 1/sec)
Range of If the calculated
positive single- coefficient D is
less than 0,
precision
Td_Kd is 0. If
floating-
Ti_Ki is 0, it is not
point numbers
controlled by D.
(unit: sec)
If the derivate-
action time
Range of
constant is less
positive single-
than 0, Tf is 0 and
precision it is not controlled
floating- by the derivate-
action time
point numbers
constant
(unit: sec)
(derivative
smoothing).
TRUE: dependent formula
6_
6-477