SLUDGE_BLANKET_MON
Ultrasonic sludge-blanket analyser conditioning: spurious-echo rejection, first-order filtering, stuck-reading detection, a validity flag and a blanket rise rate.
When to use it
Use SLUDGE_BLANKET_MON when an ultrasonic or optical sludge-blanket detector reports a blanket depth in a thickener, clarifier or settlement tank, and that raw reading has to be turned into a level a controller can be trusted to act on.
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 | — |
| RAW_M | REAL | m |
| DEV_OK | BOOL | — |
| RANGE_M | REAL | m |
| FILT_S | REAL | s |
| MAX_STEP_MPS | REAL | m/s |
| TREND_WIN | TIME | — |
| REJECT_TMO | TIME | — |
| FROZEN_TMO | TIME | — |
| HI_M | REAL | m |
| LO_M | REAL | m |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| BLANKET_M | REAL | m |
| VALID | BOOL | — |
| RATE_MPH | REAL | m/h |
| RAW_REJECTED | BOOL | — |
| ALM_HIGH | BOOL | — |
| ALM_LOW | BOOL | — |
| ALM_DEV_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 11
- Simulated scans
- 8450
- 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 SLUDGE_BLANKET_MON — free
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