AISLE_DP_CTRL
Cold-aisle containment differential-pressure control producing a bounded CRAH fan trim, with recirculation and over-pressure alarms.
When to use it
Use AISLE_DP_CTRL when a cold aisle is contained and its differential pressure to the hot aisle is measured, and the CRAH or fan-wall speeds are to be trimmed so the containment is neither starved nor over-pressurised.
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 | — |
| DP_SP | REAL | Pa |
| DP_PV | REAL | Pa |
| DP_OK | BOOL | — |
| DB_PA | REAL | Pa |
| KP | REAL | %/Pa |
| TI | REAL | s |
| TRIM_MIN | REAL | % |
| TRIM_MAX | REAL | % |
| FAIL_TRIM_PCT | REAL | % |
| HIGH_DP_PA | REAL | Pa |
| NEG_DP_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| FAN_TRIM | REAL | % |
| IN_BAND | BOOL | — |
| AT_LIMIT | BOOL | — |
| ALM_DP_FAULT | BOOL | — |
| ALM_NEG_DP | BOOL | — |
| ALM_HIGH_DP | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 9
- Simulated scans
- 3420
- 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 AISLE_DP_CTRL — free
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