6F3B0253

Basic Hardware and Function 221

7. Instructions
PID algorithm:
∆∆
MV K P I D
MV MV MV
nnnn
nn n
P
=⋅ ++
()
1
Here, Pee
eSVPV
nnn
nnn
=−
=−
1
IetIr
T
nn
I
=⋅+
DTPV PV tD Dr
tT
DD D
nnn n
nn n
D
D
=⋅−+
+⋅
=+
=
−−
()
.
11
1
01
η
η
Parameter details
AProcess input value PVC (0.00 t o 100.00 %) Data range: 0 to 10000
A+1 Auto mode set value ASV (0.00 to 100.00 %) Data range: 0 to 10000
A+2 Cascade mode set value CSV (0.00 to 100.00 % ) Data range: 0 to 10000
A+3 Manual mode MV MMV (-25.00 t o 125.00 %) Data range: -2500 to 12500
A+4 MV tracking input TMV (-25.00 to 125.00 %) Data range: -2500 to 12500
A+5 Mode setting MODE
FC840
Operation mode
00 : Manual mode
01 : Auto mode
10 : Cascade mode
11 : (Reserve)
Tracking designation
0 : No
1 : Yes
BProportional gain KP (0.00 to 327.67) Data range: 0 to 32767
B+1 Integral time TI (0.000 t o 32.767 min., In=0 if TI =0) Data range: 0 to 32767
B+2 Derivative ti me TD (0.000 to 32.767 min.) Data range: 0 to 32767
B+3 Gap (dead-band) GP (0.00 to 10.00 %) Data range: 0 to 1000
B+4 Auto mode initial set value ISV (0.00 to 100.00 %) Data range: 0 to 10000
B+5 Input filter constant FT (0.000 to 0.999) Data range: 0 to 999
B+6 ASV differential limit DSV (0.00 to 100.00 %/t) Data range: 0 to 10000
B+7 MMV differential limit DMMV (0.00 to 100.00 %/t) Data range: 0 to 10000
(If GP 0, Gap is applied)
(If TI = 0, then In = 0)
(Fixed)