Schneider Electric ACRC501, ACRC500 Control the Environment, How the Cool mode works, Setpoints

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Control the Environment

The primary function of the cooling unit is to cool air from the hot aisle and deliver it to the cold aisle at the temperature setpoint. The control strategies employed by the cooling unit depend upon the deployment strategy of the cooling group.

In an in-row environment, the cooling unit supplies constant-temperature supply air to the common cold aisle. The fan speed is modulated to ensure that the desired volume of air reaches the IT equipment. The fan speed is determined by the difference between the cooling setpoint and the maximum rack air inlet temperature.

In a HACS or RACS environment, the cooling unit neutralizes the heat accumulated in the common hot aisle and expels it back into the surrounding environmental space while maintaining the desired temperature in the cold aisle.

How the Cool mode works

Cool: Cooling control is varied based on configuration:

•InRow: The equipment maintains the supply air temperature setpoint by regulating the flow of chilled water through the cooling coil. The evaporator fan speed is controlled by comparing the rack inlet temperature to the cooling setpoint. As the rack temperature increases compared to the cooling setpoint, the fans increase output to maintain the setpoint. As rack temperature decreases compared to the cooling setpoint, the fans decrease output to maintain the setpoint.

•RACS/HACS: The supply air setpoint is maintained the same way as with the InRow configuration. The fan speed is controlled by the fan speed preference setting. The fan speed can be selected based on the temperature differential across the cooling unit. As actual supply and return temperatures deviate from the fan speed preference setting, the fan speed increases to bring the temperature difference back down to the setpoint or decreases fan output to increase the unit temperature differential.

Fluid Calibration Mode: Runs the cooling unit with the valve fully open and at minimum fan speed. This special mode is typically used to balance the fluid flow in multiple units or in one unit. This mode generates a critical alarm. The cooling unit will take some time to return to normal operation once the Fluid Calibration Mode is turned off.

See Supply Air and Return Air on page 24 for more information.

Setpoints

Path: Main > Set Group Setpoints

A setpoint is the target value that a cooling group tries to maintain in the rack. The default setpoints are appropriate for most cooling applications.

The setpoints for each mode must be within the following ranges:

•Cool: 18.0–25.0°C (64.4–90.0°F)

•Supply Air: 17.0–23.0°C (59.0–86.4°F)

NOTE: The Supply Air setting is defined when the cooling group is commissioned. This task is performed by authorized personnel only.

InRow RC Operation and Maintenance Manual

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Contents 990-3237B-001 Publication Date November Operation and Maintenance ManualSchneider Electric IT Corporation Legal Disclaimer Table of Contents Network Management Card Troubleshooting Page General Information Important Safety InformationHazard of Electric SHOCK, EXPLOSION, or ARC Flash Safety Notices During OperationStatic Electricity Hazard Ensure that ChecklistsInitial inspection checklist CommissioningElectrical Hazard Electrical inspection checklistPiping Installation Mechanical inspection checklistWhile the equipment is operating, ensure that User interface inspection checklistStart-up inspection checklist Final inspection checklistDescription Function OperationDisplay Interface Navigating the main menu Using the DisplayScrolling status screens Main menu screensNavigating sub-menus Using the Path statementPath Main Set Password Change Passwords Path Main On/Standby Password entryPath Main Operation Limit Access Start the cooling unitStandby Option Stop the cooling unitPath Main Configure Unit General General ConfigurationCooling unit configuration View the state of input and output contacts Path Main Configure Unit Discrete I/OPath Main Configure Unit Discrete I/O Normal State ContactsPath Main Configure Group Cooling Group ConfigurationConfigure the cooling group Path Main Set Identification Configure ModbusPath Main Configure Modbus Identify the cooling unitPath Main Set Group Setpoints How the Cool mode worksControl the Environment SetpointsPath Main Set Group PIDs PID settingsControl Method Proportional Integral Derivative Loop Behavior PID Tuning CorrectionTune the PID loop Thresholds Service intervalsRun hours Date & time Display SettingsPassword & timeout Adjust displayPath Main Menu Set Display Units Display unitsPath Main Configure Network Network ConfigurationConfigure the network Path Main View Unit Status View Status ReadingsCooling unit status Path Main About InRow RC Cooling group statusAbout the cooling unit Path Main View Group StatusPath Main View Event Log Event LogView event log Clear event logAlarm messages and suggested actions Respond to AlarmsView active alarms Clear active alarmsThreshlds screen Configure Unit General Role Override Auto and that coolingAlarm Message Severity Action Required Network Management Card Quick ConfigurationTCP/IP configuration methods Schneider Electric Device IP Configuration WizardIni file utility Bootp & Dhcp configuration Network TCP/IP Boot Mode Dhcp only Advanced Dhcp Cookie Is Local access to the control consoleRemote access to the control console Choose Network from the Control Console menu Control consoleTelnet and SSH Access a Configured Network Management CardWeb interface Modbus Simple Network Management Protocol SnmpInRow RC Operation and Maintenance Manual Recover From a Lost Password Environment MaintenanceMonthly Preventive Maintenance CleanlinessElectrical MechanicalFunctional Semi-Annual Preventive MaintenanceProblem Possible Cause Corrective Action TroubleshootingProblem Possible Cause Corrective Action Page Page Worldwide Customer Support

ACRC501, ACRC502, ACRC500 specifications

Schneider Electric, a global leader in energy management and automation, has introduced its sophisticated line of edge computing solutions, namely the ACRC500, ACRC501, and ACRC502. These models are designed specifically to meet the increasing demand for efficient and reliable edge computing environments across various industries.

The ACRC500 serves as a compact and versatile solution that caters to small to medium-sized applications. It is engineered to optimize performance by utilizing advanced thermal management technologies. With a scalable architecture, the ACRC500 can easily be adapted for diverse workloads, making it ideal for facilities requiring quick deployment and efficient operation.

Meanwhile, the ACRC501 provides enhanced performance capabilities with increased processing power and memory. This model incorporates state-of-the-art technologies such as edge analytics and artificial intelligence, allowing businesses to make data-driven decisions in real time. Its robust design ensures it can withstand harsh environmental conditions, making it suitable for industrial settings. The ACRC501 also features advanced security protocols, ensuring sensitive data is safeguarded against potential cyber threats.

The ACRC502 stands out with its focus on high-density applications, offering improved data handling and processing efficiency. This model supports a wide range of connectivity options including Wi-Fi, Ethernet, and cellular networks, ensuring seamless integration into existing infrastructure. Its modular design allows for easy upgrades and scalability, making it a future-proof investment for enterprises looking to expand their edge computing capabilities.

All three models—ACRC500, ACRC501, and ACRC502—are built on Schneider Electric's EcoStruxure platform. This innovation enables real-time monitoring and analytics, facilitating proactive maintenance and reducing downtime. Furthermore, they support IoT applications, making them ideal for smart factory implementations, healthcare analytics, and energy management systems.

In addition to their high-performance features, these edge computing solutions are designed with sustainability in mind. Schneider Electric emphasizes energy efficiency and reduced carbon footprints in their development processes, aligning with global sustainability goals. The result is a suite of products that not only enhance operational efficiency but also contribute to a more sustainable future for businesses.

In conclusion, the ACRC500, ACRC501, and ACRC502 represent Schneider Electric's commitment to innovation in edge computing. With their array of features and technologies, these models are poised to meet the evolving needs of industries across the globe, driving the future of operational efficiency and sustainability.
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