MG_MODE_MANAGER
Microgrid mode state machine — grid-tied, islanding, islanded, resynchronising — sequencing the grid-forming hand-off.
When to use it
Use MG_MODE_MANAGER when a microgrid can run both connected to and separated from the utility, and one place has to own which of those it is, who is holding the bus, and what the point of interconnection is allowed to do next.
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 |
|---|---|
| ENABLE | BOOL |
| GRID_OK | BOOL |
| BESS_GFM_RDY | BOOL |
| GFM_ACTIVE | BOOL |
| TIE_AT_ZERO | BOOL |
| PCC_CLOSED | BOOL |
| SYNC_OK | BOOL |
| TO_ISLAND | BOOL |
| TO_GRID | BOOL |
| TRANS_TMO | TIME |
| SYNC_TMO | TIME |
| GFM_LOSS_TMO | TIME |
| ACK | BOOL |
Outputs
| Port | Type |
|---|---|
| MODE | USINT |
| GRID_TIED | BOOL |
| ISLANDED | BOOL |
| IN_TRANSITION | BOOL |
| PCC_OPEN_CMD | BOOL |
| PCC_CLOSE_CMD | BOOL |
| GFM_CMD | BOOL |
| ZERO_TIE_REQ | BOOL |
| SYNC_REQ | BOOL |
| LOAD_SHED_REQ | BOOL |
| REQ_PENDING | BOOL |
| ALM_TRANS_FAIL | BOOL |
| ALM_UNPLANNED_ISLAND | BOOL |
| ALM_GFM_NOT_RDY | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
MG_MODE_MANAGER 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
- 12
- Simulated scans
- 129
- 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 MG_MODE_MANAGER — 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.