ABB_REF615_PTOC
Three-phase inverse-time and instantaneous overcurrent element with the IEC 60255-151 curve family, disc reset characteristic and sealed-in trip.
When to use it
Use ABB_REF615_PTOC when a feeder, transformer incomer or motor circuit needs a graded overcurrent element (ANSI 51) with an optional high-set instantaneous stage (ANSI 50), and the operate time has to follow a published IEC curve so it can be coordinated against upstream and downstream devices.
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 |
|---|---|---|
| Ia | REAL | A |
| Ib | REAL | A |
| Ic | REAL | A |
| Ipu | REAL | A |
| TD | REAL | TMS / s |
| CURVE | INT | — |
| TRESET | TIME | — |
| DO_RATIO | REAL | xIpu |
| IINST | REAL | A |
| TINST | TIME | — |
| BLK | BOOL | — |
| ENABLE | BOOL | — |
| CT_OK | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| TRIP | BOOL | — |
| START | BOOL | — |
| top | TIME | — |
| TRIP_INST | BOOL | — |
| DISC | REAL | 0-1 |
| BLOCKED | BOOL | — |
| VALID | BOOL | — |
| ALM_MEAS_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
ABB_REF615_PTOC 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
- 126
- 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 ABB_REF615_PTOC — 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.