CHILLER_FREEZER_CTRL
Spiral or blast freezer refrigeration control, belt residence time and latched cold-chain deviation.
When to use it
Use CHILLER_FREEZER_CTRL when a spiral or blast freezer holds an air temperature with modulating refrigeration while product passes on a belt, and a sustained warm excursion has to quarantine product rather than merely alarm.
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 | — |
| T | REAL | °C |
| TEMP_OK | BOOL | — |
| SP | REAL | °C |
| KP | REAL | %/K |
| TI | REAL | s |
| DEV_K | REAL | K |
| DEV_TMO | TIME | — |
| BELT_SPD | REAL | m/min |
| SPIRAL_LEN_M | REAL | m |
| FAIL_PCT | REAL | % |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| REFRIG_PCT | REAL | % |
| RESIDENCE | TIME | — |
| RESIDENCE_VALID | BOOL | — |
| AT_TEMP | BOOL | — |
| PROD_RELEASE | BOOL | — |
| ALM_TEMP_DEV | BOOL | — |
| ALM_TEMP_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 9
- Simulated scans
- 193
- 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 CHILLER_FREEZER_CTRL — free
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