RMS_WINDOW
Windowed root-mean-square with peak and crest factor, and an AC-coupling option that removes a live-zero offset.
When to use it
Use RMS_WINDOW when the energy or amplitude of a signal is the measurement — bearing vibration, motor current, ripple on a DC bus, harmonic content on an EV charger feed — and both the RMS level and how peaky the signal is are wanted.
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 |
|---|---|---|
| IN | REAL | EU |
| IN_OK | BOOL | — |
| WINDOW | UINT | — |
| AC_COUPLE | BOOL | — |
| SAMPLE_T | TIME | — |
| RESET | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| OUT | REAL | EU |
| PEAK | REAL | EU |
| CREST | REAL | ratio |
| VALID | BOOL | — |
| N_VALID | UINT | — |
| ALM_SIG_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
| ALM_UNDERSAMPLED | BOOL | — |
Validation evidence
- Tests
- 7
- Simulated scans
- 149
- 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 RMS_WINDOW — free
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