OZONE_CTRL
Storage-tank ozonation PI controller with anti-windup and a measured pre-distribution UV destruct permissive.
When to use it
Use OZONE_CTRL when a purified-water storage tank is held sanitised with a dissolved-ozone residual controlled on ORP, and the water must pass a UV destruct unit before it reaches the distribution loop and the points of use.
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 | — |
| SANITIZE_REQ | BOOL | — |
| ORP_PV | REAL | mV |
| ORP_OK | BOOL | — |
| ORP_SP | REAL | mV |
| ORP_POST | REAL | mV |
| ORP_POST_OK | BOOL | — |
| UV_DESTRUCT | BOOL | — |
| DIST_REQ | BOOL | — |
| KP | REAL | %/mV |
| TI | REAL | s |
| OZONE_MIN | REAL | % |
| OZONE_MAX | REAL | % |
| RESIDUAL_MIN | REAL | mV |
| DEST_MAX | REAL | mV |
| DEST_CONFIRM | TIME | — |
| RESID_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| OZONE_PCT | REAL | % |
| RESIDUAL_OK | BOOL | — |
| DIST_PERMIT | BOOL | — |
| ALM_RESIDUAL_LOW | BOOL | — |
| ALM_NO_DESTRUCT | BOOL | — |
| ALM_ORP_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 8
- Simulated scans
- 167
- 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 OZONE_CTRL — free
Create a free Ri Tech account to download the block. You get the Structured Text body, the Rockwell Add-On Instruction (.L5X), the Schneider Control Expert DFB (.XDB), PLCopen XML, the IEC 61499 function block type (.fbt) and the datasheet.
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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.