Liebert 3000 manual Analog Setup, Set Status Display, Calibrate Actuator

Page 19

Operation with Advanced Microprocessor Controls

Analog Setup

For installation of analog sensors, see 4.5.1 - Connecting the Analog Sensors.

After selecting a compatible sensor and properly wiring it to the terminals, set up the control to mon- itor the sensor as follows:

Slope—The slope is a multiplier used to scale the input signal. The slope can be positive (rising) or negative (falling) and can range from 0 (resulting in a horizontal line) to ±999. The slope for a 0-5 volt input is per 1 volt input, for 0-10 volt input is per 2 volt input, and for 4-20 mA is per 4 mA input. For example, assuming an intercept of 0, for a 0-10 volt sensor input with a slope of 50, an input of 1 volt would be displayed as 25: 1x(50/2); 2 volts would be 50: 2x(50/2); 3 volts would be 75: 3x(50/2); etc.

Intercept—The intercept is an offset from point 0 corresponding to 0 volts or 0 mA input. The inter- cept can be positive or negative and can be a point from 0 to ±999.

Adding an intercept of 100 to the slope example above, 1 volt would be 125: 100 + (1x[50/2]); 2 volts

would be 150: 100 + (2x[50/2]); 3 volts would be 175: 100 + (3x[50/2]); etc.

NOTE

For a 4-20 mA input sensor, if the desired reading at 4 mA input is 0, then an intercept of -1 x slope would be required. For example, assuming a slope of 50, the formula would be ([-1 x 50] + 4 x [50/4]) = 0. The intercept is -50.

Text—You may enter a custom label for each analog input. The text label can be 20 characters in length including any of the following:

ABCDEFGHIJKLMNOPQRSTUVWXYZ#%*-0123456789, or space.

Set Status Display

The Status Display can be set to display the return air temperature and humidity SENSOR READ- INGS or the temperature and humidity control SETPOINTS through this selection. When SET- POINTS is selected, the status display indicates so by displaying “SETPTS.” If SENSOR READINGS is selected, the Status Display will show the return air sensor readings.

Calibrate Actuator

For systems that use a valve actuator for chilled water or GLYCOOL cooling, the actuator timing may be calibrated or adjusted. This is the time it takes for the valve to travel from full closed to full open. It is programmable from 0 to 255 seconds. The factory default time is 165 seconds and should not be changed unless the actual valve travel time is not correct. The full valve travel time is used by the control to determine the appropriate valve position. For example, if the valve travel time is 165 sec- onds and 50% cooling is being called for, the valve will open for 83 seconds to acheive 50% open. To change the valve travel time, first enter the “CALIBRATE ACTUATOR” screen. The display will show the present period used by the control for valve actuator full travel. Press ENTER and adjust the time using the UP/DOWN arrows. When the correct time is displayed, press ENTER to store the new time to memory.

11

Image 19
Contents Liebert Challenger Page Table of Contents Run Diagnostics Component Operation and Maintenance Alarm DescriptionsHumidifier Figures Page Chilled Water Systems System DescriptionsCompressorized Systems Glycool Chilled Glycol Cooling SystemsStart-Up Procedure Advanced microprocessor control panel BasicsAdvanced microprocessor a control for Challenger Status Display Status/Alarm DataMain Menu MENU/ESC Analog Sensors Setpoints/SetupDefault setpoints and ranges Run Hours LogSetup Operation Setup SystemSelect Options Show DIP SwitchesCalibrate Sensors Alarm Delay seconds Setup AlarmsAlarm default time delays Default TimeHumidity HUM Control Method Standard Custom Alarm MessagesSet Status Display Analog SetupCalibrate Actuator Test Control Board Run DiagnosticsShow Inputs Test OutputsLCD Display Contrast Change PasswordsDate and Time Control Circuit BoardControl output LEDs DIP SwitchesNon-Volatile Memory Control OutputsOperation with Advanced Microprocessor with Graphics Control Advanced microprocessor with graphics control menu See 3.7.7 Set Status Display View/Set AlarmsSetup Alarms Setup Water Detect Floor Plan Setup Custom AlarmsView Water Detect Floor Plan for Optional LTM1000/LT750 View/Set Control Setpoints System SetupCold Start Delay Operating StatusChilled Water/Hot Water/Econ-O-Coil Flush Auto Restart DelayDefault Settings and Ranges IR Flush Overfill infrared humidifiers onlySelect Control Algorithm Chilled Water and SCR Reheats only Calibrate Valve ActuatorSelect Humidity Sensing Mode Run DiagnosticsShow Inputs Plot Graphs Setting optionsModify Plot Scales View Run Hours Log Analog/Digital InputsView Total Run Hours View 24 Hour Run Time HistoryLCD Contrast Nonvolatile Memory PID Control Chilled Water or SCR Reheats only Temperature ControlCooling/Heating Required, in Percent % Response to Control Types Proportional ControlCooling/dehumidification load status response Glycool CoolingDual Cooling Source Chilled Water CoolingSCR Electric Reheat Requires Special Control Software Humidity ControlHeating Operation Electric Reheat Hot Water ReheatHumidification Operation System Activation Control TypesProportional Control Time between peaks x 5% Short Cycle Control Load Control FeaturesAdditional Features Connecting the Analog SensorsLT750 Environmental Unit Installation-LT750 DIP Switch SettingsFault Water Detection DisplayPhysical Connections SetupCalibration Liebert Monitoring Devices and Software CommunicationsChange Filter Standard AlarmsHigh Head Pressure Custom AlarmsHigh Temperature Compressor OverloadLow Temperature High Temperature and Low Temperature SimultaneouslyHumidifier Problem Infrared Humidifiers Loss of PowerOptional/Custom Alarms System Testing Liebert unit Recommended Liquitect location Floor drain FirestatSmoke Detector Water Detection SensorDistance From Unit Zone leak detection kit installation scenariosFilters Remote ShutdownAir Distribution Blower PackageFan Impellers and Bearings BeltSuperheat Refrigeration SystemSuction Pressure Discharge PressureThermostatic Expansion Valve Operation AdjustmentHot Gas Bypass Valve Operation Air Cooled Condenser Outdoor fan/condenser configurationRegulating Valve Water/Glycol Cooled Condensers Coaxial CondenserValve spring guide Adjusting Collar Nut Glycol Solution MaintenanceCompressor Functional Check Compressor ReplacementMechanical Failure Electrical Failure Compressor Replacement ProcedureRemoving the Pan Cleaning the PanHumidifier Infrared HumidifierSteam Generating Humidifier Autoflush Infrared Humidifier Cleaning SystemAutoflush Operation Autoflush ControlsControls Operation200-460 Replacing the CanisterHumidifier canister part numbers Part Capacity Number Voltage Lbs/hr kg/hrDrain Tempering Feature Circuit Board AdjustmentsChilled water troubleshooting Blower troubleshootingSymptom Possible Cause Check or Remedy Compressor and refrigeration system troubleshooting Compressor and refrigeration system troubleshooting See 6.4.8 Compressor Functional Check and Table Dehumidification troubleshootingGlycol pump troubleshooting Infrared humidifier troubleshootingSteam generating humidifier troubleshooting Reheat troubleshooting Air Cooled Condenser if applicable Filters Steam Generating HumidifierBlower Section CompressorElectrical Panel FiltersWater/Glycol Condenser if applicable Glycol PumpSemiannual Maintenance Inspection Checklist Page That Ne tIti Ti n
Related manuals
Manual 76 pages 48.63 Kb Manual 59 pages 52.87 Kb

3000 specifications

The Liebert 3000 is a cutting-edge power protection solution designed to provide reliable and efficient backup power for critical applications. This uninterruptible power supply (UPS) system is engineered to safeguard sensitive electronic equipment from power disturbances, ensuring uninterrupted operations in data centers, telecommunications, and industrial environments.

One of the standout features of the Liebert 3000 is its high-efficiency design. With an efficiency rating of up to 94%, the system minimizes energy loss, resulting in lower operational costs and a reduced carbon footprint. This is particularly important in today's environmentally conscious climate, as organizations strive to meet sustainability goals while maintaining top-tier performance.

The Liebert 3000 employs advanced technologies to enhance its functionality. It incorporates online double-conversion technology, which provides a continuous supply of clean and regulated power. This technology ensures that connected loads receive stable voltage and frequency, shielding them from voltage spikes, sags, and outages. Additionally, the UPS offers features such as automatic battery testing, which helps ensure peak battery performance and reliability.

Another key characteristic of the Liebert 3000 is its modular design, allowing for flexible scalability. This means that organizations can easily expand the capacity of their UPS system as their power needs grow, without the need for extensive system overhauls. The modular architecture also facilitates simplified maintenance and reduces downtime, as individual modules can be serviced without interrupting power to the critical load.

The system is equipped with comprehensive monitoring and management capabilities. The Liebert 3000 provides real-time data on power usage, battery status, and system performance, enabling facility managers to make informed decisions and proactively address potential issues. The integration of remote management tools allows for seamless monitoring from anywhere, providing peace of mind for operators.

Overall, the Liebert 3000 combines high efficiency, advanced technology, and flexible design to deliver a robust power protection solution. Its reliability and performance make it a preferred choice for organizations seeking to protect their critical infrastructure while enhancing operational efficiency and sustainability. As businesses continue to rely on technology for their everyday operations, the Liebert 3000 stands out as a dependable safeguard against the uncertainties of power quality.