UPS_RUNTIME_EST
Battery autonomy estimate under the present load, checked against the required minimum runtime.
When to use it
Use UPS_RUNTIME_EST when a UPS or a battery-backed DC system has to hold the load until the generators take it, and the site needs a live answer to 'how long have we got right now' rather than the nameplate figure from the commissioning report.
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 | — |
| LOAD_KW | REAL | kW |
| BATT_KWH | REAL | kWh |
| EFF | REAL | fraction 0-1 |
| USABLE_FRAC | REAL | fraction 0-1 |
| SOC_PCT | REAL | % |
| MIN_RUNTIME | TIME | — |
| RT_HYST_MIN | REAL | min |
| BATT_OK | BOOL | — |
| LOAD_OK | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| RUNTIME_MIN | REAL | min |
| OK | BOOL | — |
| RUNTIME_REQ_MIN | REAL | min |
| USABLE_KWH | REAL | kWh |
| ALM_RUNTIME_LOW | BOOL | — |
| ALM_BATT_FAULT | BOOL | — |
| ALM_LOAD_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
| VALID | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 10
- Simulated scans
- 46
- 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 UPS_RUNTIME_EST — free
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