COMPRESSED_AIR_MON
Compressed-air header monitoring — pressure, pressure dew point and specific power, with a fail-safe air-quality permissive.
When to use it
Use COMPRESSED_AIR_MON when a compressed-air ring main feeds packaging machinery or product-contact blow-off, and the header pressure, the dryer's performance and the compressor room's specific power all have to be watched from the line PLC.
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 | — |
| PARAMS | STRING | — |
| P_MEAS | REAL | barg |
| DP_MEAS | REAL | degC |
| KW_MEAS | REAL | kW |
| FLOW_MEAS | REAL | m3/min |
| SENS_OK | BOOL | — |
| ENERGY_OK | BOOL | — |
| KW_TOL | REAL | kW |
| FLOW_TOL | REAL | m3/min |
| P_MIN | REAL | barg |
| P_DB | REAL | bar |
| DEWPOINT_MAX | REAL | degC |
| DP_DB | REAL | K |
| SPEC_HI | REAL | kW/(m3/min) |
| SPEC_DB | REAL | kW/(m3/min) |
| MIN_FLOW | REAL | m3/min |
| ALM_DLY | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| P | REAL | barg |
| DEWPOINT | REAL | degC |
| KW | REAL | kW |
| SPEC_PWR | REAL | kW/(m3/min) |
| AIR_OK | BOOL | — |
| VALID | BOOL | — |
| SPEC_VALID | BOOL | — |
| ALM_P_LOW | BOOL | — |
| ALM_DEWPOINT_HIGH | BOOL | — |
| ALM_SPEC_HIGH | BOOL | — |
| ALM_SENS_FAULT | BOOL | — |
| ALM_ENERGY_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 9
- Simulated scans
- 288
- 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 COMPRESSED_AIR_MON — 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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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.