6F3B0253
7. Instructions
Control block diagram
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ASV |
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| DSV |
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| Differential |
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CSV |
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| Cascade |
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PVn
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| Integral |
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| control |
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| Integral |
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| 1 |
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| TI⋅s | ∆ In |
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| MVn |
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| Proportional |
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| ∆ | Pn |
| ∆ | MVn |
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| MVCn |
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Gap | 1 | + | KP | MVS | H/L |
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| DMV | MV | |||||||||
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| Derivative |
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| TD⋅s | ∆ | Dn |
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| MMV |
| DMMV |
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| 1+η⋅ TD⋅s |
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| Differential limit | Manual | |
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| mode | ||
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| 1 |
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| PVC | MVS: | Velocity → Position | |
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| 1+T⋅s |
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| MVn = |
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| H/L: | Upper / lower limit |
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| Digtal filter |
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| DMV: | Differential limit | ||
Integral action control:
When MV is limited (H/L, DMV) and the integral value has same sign as limit over, integral action is stopped.
Velocity → Position conversion: | → |
| - ∆ Mvn |
In Direct mode, MV increases when PV is increased. | MVn = | ||
In Reverse mode, MV decreases when PV is increased. | → | MVn = | + ∆ MVn |
Gap |
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Error e |
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SV - PV
GP (%) GP (%)
Algorithm
Digital filter:
PVn = (1− FT⋅) PVC+ FT⋅ PVn − 1
Here,
0.000 ≤ FT≤ 0.999
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