YAS_Z1000_HVAC
Yaskawa Z1000 MEMOBUS/Modbus driver — HVAC fan duty with process PI and a fire/smoke override that outranks the restart lockout.
When to use it
Use YAS_Z1000_HVAC when a Yaskawa Z1000 drives a supply, return or smoke-control fan over MEMOBUS/Modbus, the PLC closes the duct-pressure or airflow loop, and a fire-alarm input must drive the fan to a commanded speed regardless of the normal control.
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 |
|---|---|---|
| RUN | BOOL | — |
| FIRE | BOOL | — |
| FIRE_SPD | REAL | % |
| PID_EN | BOOL | — |
| SP | REAL | process units |
| PV | REAL | process units |
| SPD_CMD_PCT | REAL | % |
| SPD_MIN | REAL | % |
| SPD_MAX | REAL | % |
| KP | REAL | % per process unit |
| TI_S | REAL | s |
| REV_ACTING | BOOL | — |
| STATUS_WORD | WORD | — |
| FREQ_OUT_WORD | WORD | — |
| COMMS_OK | BOOL | — |
| COMMS_TMO | TIME | — |
| O1_03 | INT | — |
| MAX_FREQ_HZ | REAL | Hz |
| MON_HZ_PER_COUNT | REAL | Hz/count |
| NET_SELECT | BOOL | — |
| REQ_NET_CTRL | BOOL | — |
| MFI_MASK | WORD | — |
| EXT_TRIP | BOOL | — |
| FAULT_RST | BOOL | — |
| RST_QUIESCE_T | TIME | — |
| RST_PULSE_T | TIME | — |
| RST_VERIFY_T | TIME | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| SPEED_PCT | REAL | % |
| FIRE_MODE | BOOL | — |
| CTRL_WORD | WORD | — |
| FREQ_REF_WORD | WORD | — |
| REF_HZ | REAL | Hz |
| READY | BOOL | — |
| RUNNING | BOOL | — |
| REVERSING | BOOL | — |
| FAULT | BOOL | — |
| RESETTING | BOOL | — |
| SPD_ACT | REAL | Hz |
| MFDO1 | BOOL | — |
| NET_REF_OK | BOOL | — |
| NET_CTRL_OK | BOOL | — |
| TELEGRAM_STALE | BOOL | — |
| ALM_COMMS | BOOL | — |
| ALM_RESET_FAILED | BOOL | — |
| ALM_NOT_IN_NET | BOOL | — |
| ALM_DATA_SETTING | BOOL | — |
| ALM_SCALE_UNKNOWN | BOOL | — |
| ALM_REF_CLAMP | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
| ALM_MON_UNSCALED | BOOL | — |
| ALM_DIR_MISMATCH | BOOL | — |
Supervised control write
YAS_Z1000_HVAC 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
- 23
- Simulated scans
- 462
- 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 YAS_Z1000_HVAC — free
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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.