BE1_51_TOC
Basler-shaped time-overcurrent element (ANSI 51) on the four IEC 60255-151 inverse curves, with dropout ratio and reset characteristic.
When to use it
Use BE1_51_TOC when a feeder, transformer or motor circuit needs an inverse-time overcurrent element that coordinates with upstream and downstream devices, and the setting sheet is written in Basler BE1 terms — pickup in multiples of nominal, a time-dial multiplier and a named IEC curve.
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 | — |
| Ia | REAL | pu |
| Ib | REAL | pu |
| Ic | REAL | pu |
| Ipu | REAL | pu |
| TD | REAL | TMS (dimensionless) |
| CURVE | INT | — |
| DO_RATIO | REAL | pu |
| TRESET | REAL | s |
| CT_OK | BOOL | — |
| BLK | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| TRIP | BOOL | — |
| START | BOOL | — |
| top | TIME | — |
| TOP_VALID | BOOL | — |
| ACC_PCT | REAL | % |
| BLOCKED | BOOL | — |
| ALM_CT_FAIL | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
BE1_51_TOC 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
- 9
- Simulated scans
- 227
- 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 BE1_51_TOC — 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.