Delta AH500 - Page 341

Chapter 6 Applied Instructions
6-173
Device number
Data
type
Function
Setting
range
Description
interval
between the
timed interrupt
tasks.
K
p
REAL
Proportional gain (K
p
)
Range of
positive
single-
precision
floating-
point
numbers
It is the
magnified
proportional
value of the
error between
the SV and the
PV. If the
magnified
proportional
value of the
error is less
than 0, the K
p
will be count as
0.
K
i
REAL
Integral gain (K
i
)
Range of
positive
single-
precision
floating-
point
numbers
It is the integral
gain (K
i
). If the
integral gain is
less than 0, the
K
i
will be count
as 0.
K
d
REAL
Derivative gain (K
d
)
Range of
positive
single-
precision
floating-
point
numbers
It is the
derivative gain
(K
d
). If the
derivative gain
is less than 0,
the K
d
will be
count as 0.
PID_DIR
BOOL
PID forward/reverse
direction
True: Reverse action
(E=SV-PV)
False: Forward action
(E=PV-SV)
ERR_DBW
REAL
Range within which the
error value is count as 0
Range of
single-
precision
floating-
point
numbers
The error value
(E) is the
difference
between the
SV and the PV.
When the
setting value is
0, the function
is not enabled.
For example,
the E within the
range between
-5 and 5 will be
count as 0 if
the setting
value is 5 or -5.