ENGINE_START_SEQ
Engine start sequence with limited crank attempts, enforced rest, crank disconnect and latched start-fail lockout.
When to use it
Use ENGINE_START_SEQ when a diesel or gas generator set is started automatically — standby, AMF/ATS, peak-lopping or paralleling duty — and the crank attempts must be limited and rested so a set that will not start does not destroy its own starter and battery.
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 | — |
| START | BOOL | — |
| STOP | BOOL | — |
| PREP_T | TIME | — |
| CRANK_T | TIME | — |
| REST_T | TIME | — |
| ATTEMPTS | USINT | — |
| RPM | REAL | rpm |
| RPM_OK | BOOL | — |
| DISC_RPM | REAL | rpm |
| STALL_RPM | REAL | rpm |
| OIL_OK | BOOL | — |
| SAFETY_ON_T | TIME | — |
| NO_OIL_DLY | TIME | — |
| STALL_DLY | TIME | — |
| REENG_RPM | REAL | rpm |
| REENG_TMO | TIME | — |
| SUPV_INH | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type |
|---|---|
| FUEL | BOOL |
| CRANK | BOOL |
| RUNNING | BOOL |
| FAILED | BOOL |
| ATTEMPT_CNT | USINT |
| STATE | USINT |
| ALM_OVERCRANK | BOOL |
| ALM_NO_OIL | BOOL |
| ALM_STALL | BOOL |
| ALM_NO_REST | BOOL |
| ALM_CFG_ERR | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 14
- Simulated scans
- 606
- 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 ENGINE_START_SEQ — free
Create a free Ri Tech account to download the block. You get the Structured Text body, the Rockwell Add-On Instruction (.L5X), the Schneider Control Expert DFB (.XDB), PLCopen XML, the IEC 61499 function block type (.fbt) and the datasheet.
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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.