GAS_FLARE_CTRL
Waste-gas flare sequencer with mandatory pre-ignition purge, limited ignition trials, flame supervision to a flame-failure response time, and manual-reset lockout.
When to use it
Use GAS_FLARE_CTRL when surplus digester or landfill gas is burned in an unattended waste-gas flare that starts on gas pressure, is lit by an igniter, and is supervised by a flame detector.
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 | — |
| P_MBAR | REAL | mbar |
| P_OK | BOOL | — |
| P_ON | REAL | mbar |
| P_OFF | REAL | mbar |
| FLAME_FB | BOOL | — |
| FLAME_DET_OK | BOOL | — |
| PURGE_FB | BOOL | — |
| PURGE_T | TIME | — |
| IGN_T | TIME | — |
| FFRT | TIME | — |
| MAX_TRIALS | INT | — |
| FALSE_FLAME_T | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type |
|---|---|
| FLAME_OK | BOOL |
| GAS_VALVE | BOOL |
| PURGE_CMD | BOOL |
| IGNITER_CMD | BOOL |
| BURNING | BOOL |
| PHASE | INT |
| TRIALS | INT |
| LOCKED_OUT | BOOL |
| ALM_IGN_FAIL | BOOL |
| ALM_FLAME_FAIL | BOOL |
| ALM_FALSE_FLAME | BOOL |
| ALM_PURGE_FAIL | BOOL |
| ALM_DET_FAULT | BOOL |
| ALM_P_FAULT | BOOL |
| ALM_CFG_ERR | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
GAS_FLARE_CTRL commands a real actuator. It is written to sit underneath your own interlock, permissive and protection logic — not to replace it. Commission it as you would any control block you wrote yourself.
Validation evidence
- Tests
- 11
- Simulated scans
- 501
- 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 GAS_FLARE_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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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.