DAN_FC102_HVAC
Danfoss VLT HVAC Drive FC 102 fieldbus driver with closed-loop fan control and a fire override that outranks the block's own supervision — FC-profile telegram assembly and status decode.
When to use it
Use DAN_FC102_HVAC when a Danfoss VLT FC 102 drives a fan or HVAC pump over a fieldbus with par. 8-10 = [0] FC profile, the PLC holds the pressure or temperature setpoint, and a smoke-control or fire matrix must be able to force the fan to a fixed 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 |
|---|---|---|
| ENABLE | BOOL | — |
| FIRE | BOOL | — |
| SP | REAL | process unit |
| PV | REAL | process unit |
| SPD_MIN | REAL | % of ref span |
| SPD_MAX | REAL | % of ref span |
| FIRE_SPD | REAL | % of ref span |
| KP | REAL | %/process unit |
| TI_S | REAL | s |
| LOOP_INV | BOOL | — |
| STATUS_WORD | WORD | — |
| MAV_RAW | INT | — |
| COMM_OK | BOOL | — |
| COMM_TMO | TIME | — |
| CMD_COAST | BOOL | — |
| CMD_DC_BRAKE | BOOL | — |
| CMD_QUICK_STOP | BOOL | — |
| CMD_FREEZE_REF | BOOL | — |
| FAULT_RST | BOOL | — |
| RST_PULSE_T | TIME | — |
| AUTO_RESTART | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| CTRL_WORD | WORD | — |
| MRV_RAW | INT | — |
| SPEED_PCT | REAL | % of ref span |
| SPD_ACT | REAL | % of ref span |
| READY | BOOL | — |
| RUNNING | BOOL | — |
| AT_SPEED | BOOL | — |
| DRV_STATE | USINT | — |
| START_INHIBIT | BOOL | — |
| FAULT_CODE | UINT | — |
| ALM_TRIPPED | BOOL | — |
| ALM_WARNING | BOOL | — |
| ALM_TLG_STALE | BOOL | — |
| ALM_NOT_BUS_CTRL | BOOL | — |
| ALM_DC_LINK | BOOL | — |
| ALM_TORQUE_LIMIT | BOOL | — |
| ALM_THERMAL | BOOL | — |
| FIRE_MODE | BOOL | — |
| LOOP_ERR | REAL | process unit |
| ALM_CFG_ERR | BOOL | — |
Supervised control write
DAN_FC102_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
- 21
- Simulated scans
- 302
- 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 DAN_FC102_HVAC — free
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