BRAKE_BLENDING
Electro-dynamic / friction brake blending — friction fills against the CONFIRMED electric brake effort, never against the commanded one.
When to use it
Use BRAKE_BLENDING when a vehicle brake demand has to be split between an electro-dynamic brake and a friction brake, the electro-dynamic effort fades out near stop, and the line may or may not be able to absorb the regenerated energy.
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 | — |
| BRAKE_DEMAND | REAL | kN |
| EDB_AVAIL | REAL | kN |
| EDB_FBK_KN | REAL | kN |
| EDB_FBK_OK | BOOL | — |
| LINE_RECEPTIVE | BOOL | — |
| RHEO_AVAIL | BOOL | — |
| V_TRAIN | REAL | m/s |
| SPD_OK | BOOL | — |
| FRIC_AVAIL_KN | REAL | kN |
| V_FADE_MS | REAL | m/s |
| V_STOP_MS | REAL | m/s |
| EDB_RATE_KN_S | REAL | kN/s |
| SHORT_PCT | REAL | % |
| SHORT_TMO | TIME | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| EDB_KN | REAL | kN |
| FRICTION_KN | REAL | kN |
| REGEN_KW | REAL | kW |
| RHEO_KW | REAL | kW |
| TOTAL_KN | REAL | kN |
| DEMAND_MET | BOOL | — |
| EDB_FADED | BOOL | — |
| ALM_SHORTFALL | BOOL | — |
| ALM_FBK_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 12
- Simulated scans
- 196
- 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 BRAKE_BLENDING — 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.