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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56
From version 76.11
edited by Admin
on 2026/03/31 13:04
Change comment: There is no comment for this version
To version 76.14
edited by Admin
on 2026/03/31 13:25
Change comment: There is no comment for this version

Summary

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... ... @@ -402,34 +402,34 @@
402 402  
403 403  The BMS Main 3 / BMS Main 2R device can control the precharge contactor. The precharge contactor is used to charge the intermediate capacity with low current and usually placed with the limiting resistor in parallel to charging or discharging contactor.
404 404  
405 -In simple mode precharge contactor closes
405 +BMS Main 3 can detect errors while pre-charging the load capacity by monitoring **the current and voltage difference** before and after contactors.
406 406  
407 -BMS Main 3 can detect errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors.
407 +BMS Main 2R can detect errors while pre-charging the load capacity **only by monitoring the current**.
408 408  
409 -BMS Main 2R can detect errors while pre-charging the load capacity __only__ by monitoring the current.
409 +In **simple **mode precharge contactor closes a "Precharge time" before the closing of Charge or Discharge contactors and opens after the same amount of time after closing them.
410 410  
411 -Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit.
411 +In **enhanced **mode precharge contactor will wait until the current of voltage difference requirements are met and close the Charge or Discharge contactors only after that. If waiting time is greater than "Precharge time" value, an error will be generated. Precharge contactor will open after "Precharge time" after closing the Charge of Discharge contactors.
412 412  
413 -TBA
413 +Also BMS Main 3 / BMS Main 2R can measure the power dissipated on precharge resistor and generate an error if it is greater than configured limit.
414 414  
415 415  To change the parameters of precharge contactor, select the "Control → Precharge" section:
416 416  
417 417  [[image:1750328428183-819.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="800"]]
418 418  
419 -* Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
420 -* Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
421 -* Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
422 -* Keep the precharging relay closed until precharge is finished – a flag to ignore the Precharge time and wait precharging to finish before open precharge relay;
423 -* Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
424 -* Delay before current measurement – a delay before first current measurement after closing precharge, millisecond;
425 -* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
426 -* Relaxation between attempts – a duration between precharge attempts, millisecond;
427 -* Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
428 -* Precharge resistor resistance, Ohm;
429 -* Maximum allowable power dissipated in the resistor, W;
430 -* Delay before setting the "Precharge error" when checking power, millisecond;
431 -* Delay before clearing the "Precharge error", second;
432 -* Lock the "Precharge error" – a flag to block the error until the device is restarted.
419 +* **Precharge current threshold to finish precharging **– a minimum current value at which precharging process assumed to be finished, A;
420 +* **Check voltages before and after contactors to finish precharging **– a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
421 +* **Minimum voltage difference to finish precharging** – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
422 +* **Keep the precharging relay closed until precharge is finished** – a flag to ignore the Precharge time and wait precharging to finish before open precharge relay;
423 +* **Number of precharging attempts** – maximum number of precharging attempts before setting the "Precharge error";
424 +* **Delay before current measurement** – a delay before first current measurement after closing precharge, millisecond;
425 +* **Precharge time **– a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
426 +* **Relaxation between attempts **– a duration between precharge attempts, millisecond;
427 +* **Check the power dissipated in the preacharge resistor** - a flag to enable the calculation of power dissipated in precharge resistor;
428 +* **Precharge resistor resistance**, Ohm;
429 +* **Maximum allowable power dissipated in the resistor**, W;
430 +* **Delay before setting the "Precharge error" when checking power**, millisecond;
431 +* **Delay before clearing the "Precharge error"**, second;
432 +* **Lock the "Precharge error"** – a flag to block the error until the device is restarted.
433 433  
434 434  “Precharge error” generation conditions if any of the following is true:
435 435  
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444 444  
445 445  === Charge ===
446 446  
447 -There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging.
447 +There are two signals that serve charging the battery: "Charging" and "Allow charging". With the help of the "Allow charging" signal, the BMS commands the charger to start or stop charging.
448 448  
449 449  The device supports three charge control algorithms:
450 450