SYNC_CHECK_25
ANSI 25 sync-check permissive — voltage difference, slip, angle and both-sides-live, all inside their windows together for a dwell.
When to use it
Use SYNC_CHECK_25 when a breaker paralleling two energised sources must be blocked from closing unless the two sides are genuinely in synchronism, and the permissive has to be auditable term by term afterwards.
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 | — |
| CLOSE_REQ | BOOL | — |
| DV | REAL | pu |
| SLIP | REAL | Hz |
| DANG | REAL | deg |
| GEN_V | REAL | pu |
| BUS_V | REAL | pu |
| MEAS_OK | BOOL | — |
| DV_MAX | REAL | pu |
| SLIP_MAX | REAL | Hz |
| ANG_WIN | REAL | deg |
| LIVE_PU | REAL | pu |
| IN_SYNC_T | TIME | — |
| SYNC_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| OK | BOOL | — |
| IN_SYNC | BOOL | — |
| DV_OK | BOOL | — |
| SLIP_OK | BOOL | — |
| ANG_OK | BOOL | — |
| BOTH_LIVE | BOOL | — |
| DANG_WRAP | REAL | deg |
| ALM_SYNC_TMO | BOOL | — |
| ALM_MEAS_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 10
- Simulated scans
- 103
- 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 SYNC_CHECK_25 — 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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