2. Expanded Functions
PID algorithm: |
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∆ MVn = KP⋅ (∆ Pn+ ∆ | I+n∆ |
MVn = MVn − 1± ∆ MVn | |
Here, |
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∆ Pn = en− | en − 1 |
en = SVn− | PVn |
∆ In = | en ⋅ ∆ t + Ir |
| TI |
Dn)
(If GP ≠ 0, Gap is applied)
(If TI = 0, ∆ In = 0)
∆ Dn = | TD ⋅ (PVn − 1 − PVn)− | ∆ ⋅t Dn − +1 Dr | |
∆ t + η ⋅ | TD | ||
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Dn = Dn − 1+ ∆ Dn
η= 01. (Fixed)
Parameter details
| A+1⋅A | Process input value PVC (0 to 100 %) |
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| Data range: | 0.0 to 100.0 | |||||||||||||
A+3⋅A+2 | Auto mode set value ASV (0 to 100 %) |
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| Data range: 0.0 to 100.0 | |||||||||||||||
A+5⋅A+4 | Cascade mode set value CSV (0 to 100 %) |
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| Data range: 0.0 to 100.0 | ||||||||||||||||||
A+7⋅A+6 | Manual mode MV MMV |
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A+9⋅A+8 | MV tracking input TMV |
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A+11⋅A+10 | Mode setting MODE |
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| F | 0 F |
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| C | 8 |
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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) | |
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| Tracking designation | |
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| 0 : No | |
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| 1 : Yes | |
| B+1⋅B | Proportional gain KP (0 to 327.67) |
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| Data range: | 0.0 to 327.67 | ||||||||
B+3⋅B+2 | Integral time TI (0 to 32.767 min., stop if TI | = 0) |
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| Data range: | 0.0 to 32.767 | ||||||||||||||||
B+5⋅B+4 | Derivative time TD (0 to 32.767 min.) |
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| Data range: | 0.0 to 32.767 | ||||||||||||||
B+7⋅B+6 | Gap |
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| Data range: 0.0 to 10.0 | ||||||||||
B+9⋅B+8 | Auto mode initial set value ISV (0 to 100 %) |
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B+11⋅B+10 | Input filter constant FT (0 to less than 1) |
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| Data range: | 0.0 to less than 1.0 | ||||||||||||||
B+13⋅B+12 | ASV differential limit DSV (0 to 100 %/∆ t) |
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| Data range: | 0.0 to 100.0 | ||||||||||||||
B+15⋅B+14 | MMV differential limit DMMV (0 to 100 %/∆ | t) |
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| Data range: | 0.0 to 100.0 | ||||||||||||||||
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User’s Manual 53
