HTST_DIVERT_VALVE
Flow diversion device with dual-probe agreement, hold-tube residence proving, seat proving and a forward-flow interlock.
When to use it
Use HTST_DIVERT_VALVE when an HTST flow diversion device is driven from two independent temperature probes and its seat position is proved by limit switches, so a probe disagreement, an unproven hold tube or a valve that does not travel must force and hold the divert position.
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 | — |
| PROD_T | REAL | °C |
| PROD_T_B | REAL | °C |
| DUAL_PROBE_OK | BOOL | — |
| CUTIN_T | REAL | °C |
| MAX_DEV_K | REAL | K |
| HOLD_T | TIME | — |
| FLOW_PERMIT | BOOL | — |
| LS_FWD | BOOL | — |
| LS_DIV | BOOL | — |
| TRAVEL_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| FWD_FLOW | BOOL | — |
| DIVERTED | BOOL | — |
| VALVE_POS | USINT | — |
| HOLD_PROVEN | BOOL | — |
| PROBE_DEV_K | REAL | K |
| ALM_PROBE_DEV | BOOL | — |
| ALM_VALVE_FAIL | BOOL | — |
| ALM_UNDER_TEMP | BOOL | — |
| ALM_PROBE_FAULT | BOOL | — |
| ALM_NO_PERMIT | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 8
- Simulated scans
- 144
- 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 HTST_DIVERT_VALVE — free
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