BELT_PRESS_CTRL
Belt filter press sequencing with belt-tracking and wash-water supervision, clamped speed and tension references, and cake tonnage computed from feed solids and capture.
When to use it
Use BELT_PRESS_CTRL when sludge is dewatered on a belt filter press whose belt drive and tension are set from the control system, and whose belt tracking and wash water must be supervised before sludge is fed to 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_REQ | BOOL | — |
| BELT_SPD_SP | REAL | m/min |
| TENSION_SP | REAL | bar |
| MAX_SPD | REAL | m/min |
| MAX_TENSION | REAL | bar |
| TRACK_L | BOOL | — |
| TRACK_R | BOOL | — |
| TRACK_TMO | TIME | — |
| WASH_OK | BOOL | — |
| WASH_TMO | TIME | — |
| START_T | TIME | — |
| WASHOUT_T | TIME | — |
| FEED_M3H | REAL | m3/h |
| FEED_OK | BOOL | — |
| FEED_DS_PCT | REAL | % |
| CAKE_DS_PCT | REAL | % |
| CAPTURE_PCT | REAL | % |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| BELT_CMD | BOOL | — |
| BELT_SPD_CMD | REAL | m/min |
| TENSION_CMD | REAL | bar |
| WASH_CMD | BOOL | — |
| FEED_PERMIT | BOOL | — |
| RUNNING | BOOL | — |
| PHASE | INT | — |
| TRACK_OK | BOOL | — |
| CAKE_TPH | REAL | t/h |
| CAKE_VALID | BOOL | — |
| CAKE_TOTAL_T | REAL | t |
| ALM_TRACK | BOOL | — |
| ALM_WASH | BOOL | — |
| ALM_FEED_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
BELT_PRESS_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
- 10
- Simulated scans
- 534
- 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 BELT_PRESS_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.