MIX_TANK_AGITATOR
Variable-speed mix-tank agitator with dry-run interlock, latched dry-run trip, speed ramp and drive proving.
When to use it
Use MIX_TANK_AGITATOR when a mix, blend, syrup or standardisation tank has a variable-speed agitator that must not turn unless the impeller is covered, and the drive is expected to prove that it is running.
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 | — |
| RPM_SP | REAL | rpm |
| RPM_MAX | REAL | rpm |
| LEVEL | REAL | % |
| LVL_OK | BOOL | — |
| MIN_LEVEL | REAL | % |
| RESTART_BAND | REAL | % |
| MIN_SPEED_PCT | REAL | % |
| RAMP_PCT_S | REAL | %/s |
| RUN_FB | BOOL | — |
| FB_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| SPEED_PCT | REAL | % |
| RUN_CMD | BOOL | — |
| DRY_RUN_INHIBIT | BOOL | — |
| AT_SPEED | BOOL | — |
| RUN_HOURS | REAL | h |
| ALM_DRY_RUN | BOOL | — |
| ALM_DRIVE_FAIL | BOOL | — |
| ALM_LVL_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
MIX_TANK_AGITATOR 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
- 8
- Simulated scans
- 381
- 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 MIX_TANK_AGITATOR — 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.