FIRE_SUPPRESS_ILOCK
Pre-action / clean-agent zone interlock: arms on stage 1, shuts cooling down at the countdown, and latches on any proven discharge.
When to use it
Use FIRE_SUPPRESS_ILOCK when a white-space or electrical-room suppression zone has staged detection and a pre-discharge countdown, and the building controller has to hold the abort, drive the HVAC shutdown and prove the discharge.
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 |
|---|---|
| ZONE | USINT |
| STAGE1 | BOOL |
| STAGE2 | BOOL |
| MAN_RELEASE | BOOL |
| ABORT_OK | BOOL |
| ABORT_PB | BOOL |
| DISCH_FB | BOOL |
| DET_OK | BOOL |
| RESET | BOOL |
| PREDISCH_TIME | TIME |
| SHUTDOWN_AT_COUNTDOWN | BOOL |
| FB_TMO | TIME |
| ACK | BOOL |
Outputs
| Port | Type | Unit |
|---|---|---|
| STATE | USINT | — |
| ARMED | BOOL | — |
| COUNTDOWN | BOOL | — |
| ABORT_ACTIVE | BOOL | — |
| RELEASE_CMD | BOOL | — |
| COOLING_SHUTDOWN | BOOL | — |
| DAMPER_CLOSE | BOOL | — |
| EVAC_ALARM | BOOL | — |
| TIME_TO_RELEASE_S | REAL | s |
| ZONE_ALARM | USINT | — |
| ALM_RELEASED | BOOL | — |
| ALM_NO_DISCHARGE | BOOL | — |
| ALM_DISCH_UNEXPLAINED | BOOL | — |
| ALM_DET_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
FIRE_SUPPRESS_ILOCK 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
- 14
- Simulated scans
- 664
- 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 FIRE_SUPPRESS_ILOCK — 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.