Control mode

• Auto (default): The operating status and mode of the air conditioner are automatically controlled by the temperature and humidity control module.
• Manual: You can manually set the operating status and mode of the air conditioner for commissioning. After the commissioning is complete, switch back to the automatic mode. Otherwise, the temperature and humidity may be out of control.

Air conditioner parameter setting^[1]

• Default: The air conditioner works based on the default cooling start/stop temperatures and heating start/stop temperatures in the system software.
• Custom: You can adjust the cooling start/stop temperatures and heating start/stop temperatures of the air conditioner as required.

Forced dehumidification control

At the first startup after deployment or long-term storage, you are advised to start forced dehumidification to reduce the risk of equipment damage caused by condensation.

Note [1]: This parameter can be set only in V300R023C00 and later versions.

Exhaust fan control module self-test time

Time when the exhaust function is self-tested every day

Exhaust fan control module self-test

After the self-test is started, the exhaust fan will be running for a period of time to check its exhaust function. If the exhaust fan does not meet the requirements, the system cannot start.

Exhaust fan control

After started, the exhaust fan will automatically stop in at least 1 hour. If a combustible gas alarm is generated, the exhaust fan cannot be stopped. The exhaust fan cannot be manually started after the fire response is triggered until the fire alarm is cleared or 24 hours later.

DC output distribution

• Starting up: Enable the DC output power distribution to supply 48 V DC power to the battery pack fan, BMU, and ESC monitoring system.
• Stop: Disable the DC output power distribution to stop supplying 48 V DC power to the battery pack fan, BMU, and ESC monitoring system.

Temperature alarm threshold

Specifies the temperature threshold for triggering a fire alarm and processing fire response logic.

Burglar Alarm

The default value is Disable.

Disable: No burglar alarm will be triggered when the ESS door is open.

Enable: A burglar alarm will be triggered when the ESS door is open.

Enable delayed update

• If this parameter is set to Enable, after the upgrade package is uploaded, the ESU will perform the upgrade automatically when the SOC is greater than or equal to 30%, the rack voltage is greater than or equal to 400 V, and the ESC and ESM communicate properly.
• If this parameter is set to Disable, the upgrade can be performed immediately. The upgrade may fail if the upgrade conditions are not met.

Delete invalid battery packs

Delete battery packs that are not connected. This function is used when replacing battery packs.

Battery pack shutdown delay

After this parameter is set, the system can still monitor the battery for a period of time after power-off.

Shutdown due to communication interruption between the rack controller and PCS

• The default value is Disable.
• If this parameter is set to Enable, the ESS shuts down when the communication between the PCS and the rack controller is interrupted.

Insulation resistance protection threshold

To ensure device safety, the device detects the insulation resistance of the DC side to the ground when it starts a self-check. If the detected value is less than the preset value, the device does not start. Value range: [0.05, 1.5].

Battery working mode

Set the battery rack to Running or Hibernation.

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Charging cutoff SOC

Set the end-of-charge SOC of battery packs in a battery rack.

For SmartLogger V300R023C10SPC500 and later versions, Charging cutoff SOC and Discharge cutoff SOC do not take effect.

Discharge cutoff SOC

Set the end-of-discharge SOC of battery packs in a battery rack.

Quantity of battery packs

Set the quantity of battery packs in a battery rack. If the quantity is inconsistent with the actual quantity, the system cannot start.

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Insulation resistance diagnosis

Start or stop the detection for power insulation resistance of the battery rack.

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Battery pack position detection

Start or stop the identification for battery pack positions in a battery rack.

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Total charged energy calibration

Calibrate the total charged energy.

Total discharged energy calibration

Calibrate the total discharged energy.

Working mode

The default value is Auto. The air conditioner working mode can be Auto, Dry, Heat, or Cool.

• The working mode of the air conditioner is adjusted intelligently. Non-professional personnel are not allowed to set the working mode.

• The air conditioner dehumidification mode is used for system protection. Do not set the air conditioner to dehumidification mode manually.
• The heating and cooling modes of the air conditioner are used only for equipment commissioning. Do not set them manually.

Cooling start temperature

Set the target temperature for cooling when the air conditioner works in automatic mode.

• This parameter affects the system charge/discharge power and cell lifespan. Non-professional personnel are not allowed to set this parameter.
• 280 Ah battery pack: When the rate is [0C, 0.25C], refer to the 0.25C temperature control. When the rate is (0.25C, 0.5C], refer to the 0.5C temperature control. When the rate is (0.5C, 1C], refer to the 1C temperature control.
• 320 Ah battery pack: When the rate is [0C, 0.5C], refer to the 0.5C temperature control. When the rate is (0.5C, 1C], refer to the 1C temperature control.
• Choose Monitoring > ESS > ESU > ESR > ESM > Cell data to query the quantity of battery cells. If the quantity of battery cells is 16, the battery pack is 320 Ah. If the quantity of battery cells is 18, the battery pack is 280 Ah.
• If a high-rate system is used in the low-rate scenario, it is prone to low efficiency, high power consumption, and current limiting.
• The Company is not liable for any system exception or underperformance caused by failure to set the temperatures as required.
• For special scenarios, contact the Company's engineers.

Cooling stop temperature

Set the target temperature when the air conditioner stops cooling in automatic mode.

Heating start temperature

Set the target temperature for heating when the air conditioner works in automatic mode.

Heating stop temperature

Set the target temperature when the air conditioner stops heating in automatic mode.

High temperature alarm threshold

Set the indoor high temperature alarm threshold for the air conditioner.

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Low temperature alarm threshold

Set the indoor low temperature alarm threshold for the air conditioner.

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AC overvoltage alarm threshold

Set the upper threshold for the AC input voltage of the air conditioner.

This parameter applies only to air conditioners in the battery cabin of the LUNA2000-2.0MWH Series Smart String Grid Forming ESS.

AC undervoltage alarm threshold

Set the lower threshold for the AC input voltage of the air conditioner.

This parameter applies only to air conditioners in the battery cabin of the LUNA2000-2.0MWH Series Smart String Grid Forming ESS.

DC overvoltage alarm threshold

Set the upper threshold for the DC input voltage of the air conditioner.

This parameter applies only to in-cabinet air conditioners of the LUNA2000-200KWH Series Smart String Grid Forming ESS and air conditioners in the control unit cabin of the LUNA2000-2.0MWH Series Smart String Grid Forming ESS.

DC undervoltage alarm threshold

Set the lower threshold for the DC input voltage of the air conditioner.

This parameter applies only to in-cabinet air conditioners of the LUNA2000-200KWH Series Smart String Grid Forming ESS and air conditioners in the control unit cabin of the LUNA2000-2.0MWH Series Smart String Grid Forming ESS.