AERATION_DO_CTRL
Aeration zone dissolved-oxygen control on the zone air valve, publishing the zone's air demand for the blower header and failing to a fixed valve position on probe loss.
When to use it
Use AERATION_DO_CTRL when an activated-sludge aeration zone holds dissolved oxygen with its own modulating air valve, and the zone's air demand has to be published upward to a most-open-valve blower control.
Interface
The published port signature. This is the whole of what the block exposes to your program — the implementation body is not shown here and ships with the download.
Inputs
| Port | Type | Unit |
|---|---|---|
| ENABLE | BOOL | — |
| DO_PV | REAL | mg/L |
| DO_OK | BOOL | — |
| DO_SP | REAL | mg/L |
| V_MIN | REAL | % |
| V_MAX | REAL | % |
| FAIL_PCT | REAL | % |
| KP | REAL | %/(mg/L) |
| TI_S | REAL | s |
| AIR_MAX | REAL | Nm3/h |
| DO_LOW | REAL | mg/L |
| DO_HIGH | REAL | mg/L |
| LOW_PERSIST_T | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| VALVE_PCT | REAL | % |
| AIR_DEMAND | REAL | Nm3/h |
| DO_ERR | REAL | mg/L |
| AT_LIMIT | BOOL | — |
| VALID | BOOL | — |
| ALM_DO_LOW | BOOL | — |
| ALM_DO_HIGH | BOOL | — |
| ALM_PROBE_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 7
- Simulated scans
- 580
- Simulator
- v0.1.0
Complete IEC 61131-3 implementation with a published test suite that runs on the vplant simulator. The counts above are that suite, executed on this build.
- Conforms to IEC 61131-3
- Conforms to IEC 61499
Download AERATION_DO_CTRL — free
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