Delta AH500 Manual page 134

AH 5 00 Mo d u le Ma n ua l
c. PID parameters
PID parameter
Performing/Not performing the PID
algorithm
Manual/Automatic tuning
Heating/Cooling mode
Sampling time
Automatic mode
Manual mode
d. Additional remarks on PID control
(1) If K , K , or K
p i d
to use proportional control, K
(2) If users do not know how to adjust the parameters K
environment, they can use the automatic tuning function to set the parameters, and then
finely adjust the parameters to the optimum values. When the automatic tuning function
is enabled, the value in a register defined by the users is 1. After the automatic tuning of
the parameters is complete, the value in the register becomes 0.
(3) If users want to set the parameters K
by experience, and set the K
users can tune the K
5 - 1 2
Automatic tuning
Refreshing the
manual output
values automatically
Target value
Proportional gain
Integral gain
Derivative gain
Range within which
the error values are
count as 0
Maximum output
value
Minimum output
value
Reading the output
value
Accumulated
integral value
Manual output value
is 0, the corresponding function is disabled. For example, if users only want
and K are 0.
i d
p
, and K
i
, and K in order.
i d
Description
Bit 0~bit 3: CH0~CH3 (Performing/Not
performing the PID algorithm)
Bit 8~bit 11: CH0~CH3 (Manual/Automatic
tuning)
Bit 0~bit 3: CH0~CH3
One-word decimal format
Unit: 10 ms
Bit 0~bit 3: CH0~CH3
Bit 0~bit 3: CH0~CH3
One-double word floating-point format
One-double word floating-point format
One-double word floating-point format
One-double word floating-point format
One-double word floating-point format
When the setting value is 0, the function is
not enabled. For example, if the setting value
is 5, and the difference between the present
value and the target value is in the range of -5
to 5, the output value is 0.
One-double word floating-point format
One-double word floating-point format
One-double word floating-point format
One-double word floating-point format
One-double word floating-point format
, K , and K
p i
, K , and K by themselves, they need to set the K
i d
to 0. After the tuning of the K
d
under a controlled
d
p
is complete, the
p