Delta AH500 - Page 351

Chapter 6 Applied Instructions
6-183
Device
number
Function Setting range Description Device number
is complete, the device is
automatically set to 0, and is filled in
with appropriate parameters Kc_Kp,
Ti_K
i
, Td_K
d
and Tf.
PID_MAN
BOOL
PID A/M mode
True: Manual
The MV is output according to
the MOUT, but it is still within the
range between the MV_MIN and
the MV_MAX. When
PID_MODE is set to 1, the
setting is ineffective.
False: Automatic
The MV is output according to
the PID algorithm, and the
output value is within the range
between MV_MIN and
MV_MAX.
MOUT_AUT
O
BOOL
MOUT automatic
change mode
True: Automatic
The MOUT varies with the MV.
False: Normal
The MOUT deos not vary with
the MV.
CYCLE
Double
word/
DINT
Sampling time (T
S
)
1~40,000
(unit: ms)
When the
instruction is
scanned, the PID
algorithm is
implmented
according to the
sampling time, and
the MV is
refreshed. (PLC
will not use the
setting value to
determine the time
or to operate
automatically. ) If
T
S
is less than 1, it
will be counted as
1. If T
S
is larger
than 40,000, it will
be counted as
40,000. When the
instruction PID is
used in the interval
interrupt task, the
sampling time is
the same as the
interval between
the timed interrupt
tasks.
Kc_Kp
REAL
Proportional gain (Kc
or Kp) (The selection
of Kc or Kp depends
on the setting of the
parameter PID_EQ.)
Range of
positive single
precision
floating-point
values
It is a proportional
gain. If a
proportional gain is
less than 0, Kc_Kp
will be count as 0.