PH_CO2_BASE_CTRL
Bioreactor pH split-range control by CO2 sparge downwards and metered base upwards, with a cumulative base cap.
When to use it
Use PH_CO2_BASE_CTRL when a bioreactor holds pH between a CO2 sparge that acidifies and a base addition that alkalises, and the total base delivered over the batch has to be capped because it is also an osmolality addition.
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 | — |
| PH | REAL | pH |
| PH_OK | BOOL | — |
| SP | REAL | pH |
| DB | REAL | pH |
| KP | REAL | %/pH |
| TI | REAL | s |
| CO2_MAX | REAL | % |
| BASE_MAX | REAL | % |
| BASE_ML_S | REAL | mL/s |
| MAX_BASE_ML | REAL | mL |
| DEV_ALM | REAL | pH |
| DEV_TMO | TIME | — |
| RESET_TOTAL | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| CO2_PCT | REAL | % |
| BASE_PCT | REAL | % |
| BASE_TOTAL_ML | REAL | mL |
| DEV_PH | REAL | pH |
| IN_BAND | BOOL | — |
| VALID | BOOL | — |
| ALM_BASE_CAP | BOOL | — |
| ALM_DEV | BOOL | — |
| ALM_PH_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 10
- Simulated scans
- 531
- 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 PH_CO2_BASE_CTRL — free
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