LYO_PRIMARY_DRY
Primary-drying stage supervisor: shelf-setpoint ramp, chamber-pressure setpoint, sublimation-rate estimate and collapse-temperature protection.
When to use it
Use LYO_PRIMARY_DRY when the primary-drying stage of a lyophilisation cycle is run at a fixed shelf temperature and chamber pressure, and product temperature has to be kept below the formulation's collapse or eutectic-melt temperature for the whole of it.
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 | — |
| RUN | BOOL | — |
| SHELF_SP | REAL | degC |
| CHAMBER_P_SP | REAL | Pa |
| RAMP_C_MIN | REAL | degC/min |
| SHELF_T_PV | REAL | degC |
| SHELF_T_OK | BOOL | — |
| PRODUCT_T_PV | REAL | degC |
| PRODUCT_T_OK | BOOL | — |
| CHAMBER_P_PV | REAL | Pa |
| CHAMBER_P_OK | BOOL | — |
| T_CRIT | REAL | degC |
| T_MARGIN | REAL | degC |
| RISK_TMO | TIME | — |
| SAFE_SHELF_C | REAL | degC |
| SAFE_RAMP_C_MIN | REAL | degC/min |
| AREA_M2 | REAL | m2 |
| RP | REAL | Pa.h.m2/kg |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| SHELF_T | REAL | degC |
| CHAMBER_P | REAL | Pa |
| SUBLIM_RATE | REAL | kg/h |
| PRODUCT_T | REAL | degC |
| P_ICE | REAL | Pa |
| SHELF_CMD_C | REAL | degC |
| P_CMD | REAL | Pa |
| DRYING | BOOL | — |
| RAMPING | BOOL | — |
| VALID | BOOL | — |
| ALM_COLLAPSE_RISK | BOOL | — |
| ALM_T_FAULT | BOOL | — |
| ALM_P_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 9
- Simulated scans
- 4229
- 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 LYO_PRIMARY_DRY — free
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