FEED_PROFILE_CTRL
Fed-batch substrate feed profile — constant, linear ramp, biomass-driven exponential or DO-stat — with a cumulative volume cap.
When to use it
Use FEED_PROFILE_CTRL when a fed-batch fermentation or cell culture delivers substrate on a profile rather than on a controller, and the profile has to be selectable, holdable by the batch manager, and bounded by the total volume the vessel can take.
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 | — |
| PROFILE | USINT | — |
| BIOMASS | REAL | g/L |
| BIOMASS_OK | BOOL | — |
| ELAPSED | TIME | — |
| HOLD | BOOL | — |
| VOLUME_L | REAL | L |
| MU_SP | REAL | 1/h |
| YXS | REAL | g/g |
| SF_G_L | REAL | g/L |
| RATE_CONST | REAL | L/h |
| RATE_START | REAL | L/h |
| RATE_END | REAL | L/h |
| RAMP_TIME | TIME | — |
| DO_PV | REAL | % |
| DO_OK | BOOL | — |
| DO_TRIG_PCT | REAL | % |
| DO_STAT_DB | REAL | % |
| DO_STAT_RATE | REAL | L/h |
| FEED_MAX | REAL | L/h |
| TOTAL_MAX_L | REAL | L |
| RESET_TOTAL | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| FEED_RATE | REAL | L/h |
| FED_TOTAL_L | REAL | L |
| FEEDING | BOOL | — |
| HELD | BOOL | — |
| VALID | BOOL | — |
| ALM_TOTAL_CAP | BOOL | — |
| ALM_BIOMASS_FAULT | BOOL | — |
| ALM_DO_FAULT | BOOL | — |
| ALM_PROFILE_INVALID | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 9
- Simulated scans
- 375
- 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 FEED_PROFILE_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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