Emerson MINI-MATE2 user manual Load Control Features, Humidification Operation, Communications

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System Performance Microprocessor Controls

7.2.3Humidification Operation

The canister humidifier is activated when the humidity control calculates a requirement of 100% humidification; and is deactivated when the humidification requirement falls below 50%.

7.3Load Control Features

The control system monitors the compressor and prevents it from turning on within a 3 minute period of being off. If this on-off-on cycle occurs too often (e.g., 10 times in one hour) a Short Cycle Alarm will occur.

7.3.1Communications

The control system uses a two-wire, RS-422 channel to communicate with Liebert Site Products via a proprietary protocol. A converter board (ECA2) is available to allow communications with a “dumb” terminal or a computer using RS-232 channel. More details are provided in the Site Products and ECA2 User Manual.

The communications channel provides both monitoring and control options, including:

•TEMPERATURE/HUMIDITY: Current temperature and humidity readings.

•STATUS (%), Cooling/heating and humidify/dehumidify operating status.

•PRESENT ALARMS: Alarms currently activated.

•SET POINTS:

•Temperature Set point

•Temperature Sensitivity

•Humidity Set point

•Humidity Sensitivity

•High Temperature Alarm

•Low Temperature Alarm

•High Humidity Alarm

•Low Humidity Alarm

•ON/OFF STATUS and CONTROL

•SILENCE ALARM

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Liebert® Mini-Mate2™

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Contents Liebert Mini-Mate2 Page Table of Contents System Performance Microprocessor Controls Microprocessor ControlSystem OPERATION, Testing and Maintenance AlarmsTables Important Safety Instructions Liebert Mini-Mate2 Air-cooled systems-indoor centrifugal condensing units Product Model InformationPFH 0 67 a a L System configurations-50 Hz System configurations-60 HzIntroduction Evaporator Section-Split System Standard FEATURES-5 TON SystemsCondensing Unit Section-Split System Chilled Water UnitsSystem Controls Other Standard Control FeaturesReheat Switches and MotorsHumidifier SensorsOptional Configurations-Prop Fan Condensing Units Optional Configurations-Water/Glycol Condensing UnitsFree-Cooling Optional Configurations-Chilled Water Units SHIP-LOOSE ACCESSORIES-FIELD-INSTALLED Ship-Loose Accessories-Field-Installed Installation Considerations Site Preparation and InstallationRoom Preparation Air-cooled systems Location ConsiderationsUnit weights Ceiling Unit WeightsCooling Drycooler Cooling UnitsClose Coupled Installations Installing the Ceiling UnitsEquipment Inspection Upon Receipt Evaporator Air Distribution Filter BoxPiping Connections and Coolant Requirements Drain Line Connections for Ducted SystemsHumidifier Water Supply Line Evaporator external static pressureEquivalent lengths for various pipe fittings, ft m Recommended refrigerant line sizesEquivalent Pipe Liquid Suction Length, ft m Copper PipePipe length and condenser elevation relative to evaporator Vertical rise above evaporator/maximumVertical fall below evaporator Quick Connect Fittings Total refrigerant = Units and LinesRefrigerant charge Line charges refrigerant per 100 ft m of Type L copper tubeDPN000218 Electrical Connections Threaded rod and hardware kit installationControl Connections Power ConnectionsEvaporator unit electrical connections Close coupled installation Ducting Piping ConnectionsGeneral Considerations Considerations for Specific ApplicationsAIR-COOLED Dimensional Data AIR Cooled AIR-COOLED Outdoor Air-Cooled Condensing Unit Installation Weight, lb kgModel # 60Hz 50Hz Rev Water/Glycol Piping Considerations Condensing Unit Fluid RequirementsRegulating Valve WATER/GLYCOL Dimensional Data WATER/GLYCOL DPN000214 Optional free-cooling coil 3-way valve on water/glycol units Hot Water Reheat CoilChecklist for Completed Installation Microprocessor Control Feature OverviewSetpoints Main Menu MenuStatus Active AlarmsTime DateRestart Time Delay Setup OperationShow DIP Switch 2 C/F DegreesSetup functions, default values and allowable ranges Change PasswordsFunction Default Range Calibrate SensorsAlarm Time Delay Alarm EnableCommon Alarm Enable Alarm default time delaysStandard Custom Alarm Messages Custom AlarmsCustom Text LCD Display ContrastEquipment Options Switches Run Diagnostics Available On Rev 1.001.0 and higherEquipment switch settings unit control board Switch settings wall box boardTest Control Board Test OutputsControl menu Wall box board Control board-inside evaporatorTemperature Control Humidity ControlSystem Performance Microprocessor Controls Load Control Features Humidification OperationCommunications Alarms Alarms Definitions and TroubleshootingCustom Alarms High Head PressureHumidifier Problem Alarm TemperatureHigh Water Alarm Air-Cooled SystemsOptional/Custom Alarms System Testing Maintenance and Component OperationSystem OPERATION, Testing and Maintenance Air Distribution Blower SystemBlower Removal Refrigeration SystemDischarge Pressure Glycol Solution MaintenanceThermostatic Expansion Valve Air-Cooled Condensing UnitsHot gas bypass Hot Gas BypassCompressor Replacement Replacement ProceduresMechanical Failure Electrical FailureReplace a Failed Compressor Steam Generating Humidifier-Operation Procedures Humidifier control board DIP switch settings Humidifier Circuit Board AdjustmentsReplacing the Humidifier Canister AmpsMaintenance Inspection Checklist Troubleshooting TroubleshootingDisplay Problem Symptom Possible Cause Check Or Remedy Cooling cycle tooShort Display freezesPpor t Is t Ne tTwor k Care

MINI-MATE2 specifications

The Emerson MINI-MATE2 is a cutting-edge temperature and pressure monitoring device specifically designed for the needs of the refrigeration and HVAC industries. Known for its reliability and user-friendly interface, this compact unit serves as a key tool for technicians and facility managers looking to optimize system performance while ensuring compliance with safety standards.

One of the main features of the MINI-MATE2 is its advanced digital display, which allows users to easily monitor and interpret temperature and pressure readings in real-time. Its highly responsive sensors ensure accurate data collection, vital for maintaining optimal operating conditions. Moreover, the device supports a wide range of refrigerants, making it versatile for different applications, from walk-in coolers to commercial refrigeration systems.

The MINI-MATE2 utilizes state-of-the-art technology to enhance efficiency and performance. Equipped with Bluetooth connectivity, it allows for wireless communication with mobile devices, enabling technicians to track readings and receive alerts remotely. This feature not only improves convenience but also helps in quick decision-making, ensuring timely interventions when anomalies are detected.

Another significant characteristic is its robust construction. Built to withstand harsh environments, the MINI-MATE2 features a durable casing that protects it from physical impacts and environmental factors. This resilience ensures longevity, making it a cost-effective investment for any facility.

In addition, the MINI-MATE2 is designed with user-friendliness in mind. Its intuitive interface means that even technicians with limited experience can easily navigate its functionalities. Quick setup and straightforward operation allow for rapid adoption and extensive use in a variety of settings.

Finally, the MINI-MATE2 also includes built-in data logging capabilities. Users can record historical data for analysis and reporting purposes, which is essential for performing trend analysis and identifying potential issues before they escalate. By providing a comprehensive overview of system performance, the MINI-MATE2 empowers users to make informed decisions that can lead to improved energy efficiency and reduced operational costs.

Overall, the Emerson MINI-MATE2 is an indispensable tool for modern refrigeration and HVAC applications, combining cutting-edge technology, user-friendly design, and essential features to support efficient system management.
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