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Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:14
From version 27.1
edited by Admin
on 2024/12/25 10:22
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To version 28.2
edited by Admin
on 2024/12/26 10:38
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394 394  
395 395  The BMS Main 3 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.
396 396  
397 -BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors.
397 +BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit.
398 398  
399 399  To change the parameters of precharge contactor, select the "Control → Precharge" section:
400 400  
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413 413  * Delay before clearing the "Precharge error", second;
414 414  * Lock the "Precharge error" – a flag to block the error until the device is restarted.
415 415  
416 -
417 417  “Precharge error” generation conditions:
418 418  
419 419  * the precharge current does not decrease after "Number of precharging attempts";
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573 573  
574 574  === Charge/Discharge ===
575 575  
576 -The BMS Main 3 device can control the charging/discharging contactor, which combines algorithms of charging and discharging contactor. It behaves as a charging contactor when “Charge request” or “Charger connected” is set, otherwise – as a discharging contactor.
575 +The BMS Main 3 device can control the charge/discharge contactor, which combines algorithms of charging and discharging contactor.
577 577  
577 +Charge/Discharge contactor has three algorithms of operation:
578 +
579 +* Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
580 +* Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
581 +* Independent (on Charge request or Discharge request) - Charge/Discharge contactor is based on its own controller that listen to Charge and Discharge requests.
582 +
583 +
578 578  The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
579 579  
580 -[[image:1733322827919-875.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="85" width="800"]]
586 +[[image:1735122153011-166.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="800"]]
581 581  
582 582  In this section:
583 583  
584 584  * Enable – a flag to enable the charge/discharge controller.
591 +* Algorithm:
592 +** Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
593 +** Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
594 +** Independent (on Charge request or Discharge request);
595 +* Delay before starting charging or discharging, millisecond;
596 +* Delay before stopping charging or discharging, millisecond;
597 +* Control the precharging contactor – a flag that enables control of precharging contactor while closing the charge/discharge contactor;
598 +* Emulate the "Charging" and "Discharging" signals – a flag to enable generation of "Charging" and "Discharging" signals when closing charge/discharge contactor;
599 +* Errors 1, 2 to prevent CHARGING through charging/discharging contactor, Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor – bitfields to choose the errors which will open the charging/discharging contactor. This bitfields are combined by bitwise OR and intended to separate settings for charging and discharging processes;
600 +* Errors 1, 2 which affect the contactor only if battery CHARGING is detected – a bitfield to choose the errors which will trigger only if charging current is present. This bitfield is combined with "Errors 1, 2 to prevent CHARGING through charging/discharging contactor" by bitwise AND;
601 +* Errors 1, 2 which affect the contactor only if battery DISCHARGING is detected – a bitfield to choose the errors which will trigger only if discharging current is present. This bitfield is combined with "Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor" by bitwise AND;
602 +* Switch off the charging/discharging contactor on errors without delay – a flag to protectively open the charging/discharging contactor without a delay. In the opposite case, when an error is detected, the charging/discharging contactor opens always with the delay “Delay before stopping discharging”.
585 585  
586 586  === Discharge (AUX) ===
587 587