6F3B0253
7. Instructions
PID algorithm:
∆ MVn = KP⋅ (∆ Pn+ ∆ I+n∆ Dn) MVn = MVn − 1± ∆ MVn
Here,
∆Pn = en− en − 1
en = | SVn− PVn | (If GP ≠ 0, Gap is applied) | ||||
∆ In = |
| en ⋅ ∆ t + Ir | (If TI = 0, then ∆ In = 0) | |||
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| TI | ||||
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∆ Dn | = | TD ⋅ (PVn − 1 − PVn)− | ∆ ⋅t Dn − +1 Dr |
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| TD | |||||
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| ∆ t + η ⋅ | ||
Dn = Dn − 1+ ∆ Dn
η= 01. (Fixed)
Parameter details
A | Process input value PVC (0.00 to 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 | Data range: | ||||||||||||||||||
A+4 | MV tracking input TMV | Data range: | ||||||||||||||||||
A+5 | Mode setting MODE |
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| 4 | 0 |
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| Operation mode | ||
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| 00 | : Manual mode | |
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| 01 | : Auto mode | |
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| 10 : Cascade mode | ||
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| 11 | : (Reserve) | |
Tracking designation 0 : No
1 : Yes
B | Proportional gain KP (0.00 to 327.67) | Data range: | 0 to 32767 |
B+1 | Integral time TI (0.000 to 32.767 min., ∆ In=0 if TI =0) | Data range: | 0 to 32767 |
B+2 | Derivative time TD (0.000 to 32.767 min.) | Data range: | 0 to 32767 |
B+3 | Gap | 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 |
Basic Hardware and Function 221
