SIP_7SJ_EF
SIPROTEC-shaped sensitive and directional earth-fault characteristic (ANSI 50N/51N/67N/67Ns): residual-current pickup, a V0-polarised directional sector, and the same IEC 60255-151 curves as the phase element.
When to use it
Use SIP_7SJ_EF when residual (zero-sequence) current has to be supervised — a sensitive earth-fault setting on a high-impedance or compensated network, or a directional earth-fault element on a network with more than one earthed source — and the setting vocabulary is expected to look like a 7SJ.
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 |
|---|---|---|
| I0 | REAL | x In |
| V0 | REAL | % Vn |
| I0pu | REAL | x In |
| phi | REAL | deg |
| BLK | BOOL | — |
| ENABLE | BOOL | — |
| MEAS_OK | BOOL | — |
| DIR_MODE | INT | — |
| V0_MIN | REAL | % Vn |
| PHI_RCA | REAL | deg |
| PHI_HALF | REAL | deg |
| CURVE | INT | — |
| TD | REAL | multiplier |
| TDEF | TIME | — |
| TRESET | TIME | — |
| DO_RATIO | REAL | p.u. |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| TRIP | BOOL | — |
| dir | BOOL | — |
| PICKUP | BOOL | — |
| DIR_VALID | BOOL | — |
| VALID | BOOL | — |
| top | TIME | — |
| ACC_PCT | REAL | % |
| BLOCKED | BOOL | — |
| ALM_NO_POL | BOOL | — |
| ALM_MEAS_FAIL | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
Supervised control write
SIP_7SJ_EF 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
- 11
- Simulated scans
- 186
- 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
Download SIP_7SJ_EF — 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 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.