Trane CVHE-SVU01E-ENX39640712050 manual Current Limit Protection, Reverse Rotation Protection

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Machine Protection

and Adaptive

Control

Current Limit Protection

Current Limit Protections exist to avoid motor current overload and damage to the compressor motor during starting and running.

Compressor motor current is continuously monitored and current is controlled via a limit function that to prevent running into over current diagnostic trips.

The current limit control logic attempts to prevent the motor from shutting down on a diagnostic trip by limiting compressor current draw relative to an adjustable current limit DynaView™ Current Limit Setpoint. This setpoint can also be lowered to provide electrical demand limiting on the unit as required. This could also be set to allow the Chiller to continue to run at a lower load to avoid tripping off via a diagnostic.

The Current Limit function uses a PID algorithm (Similar to the Leaving Water Temperature control) that allows the chiller to run at the Current Limit Setpoint. At machine startup, or with any setpoint change the new current limit setpoint reached after the is filtered setpoint time elapses. The minimum current limit setpoint is default set to 40 percent RLA (20-100 percent). The filtering time is default set to 10 minutes (0-120 minutes), however these can be altered via the service tool. This filtered setpoint allows for stable control if the Current Limit setpoint is adjusted during a run.

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The Current Limit Setpoint (CLS) can be changed from: Front Panel, External Analog input (with GBAS option), or Tracer (Tracer option). However, If present Tracer current setpoint has the highest priority, unless disabled in the DynaView™ Setpoint source override menu. The External CLS has second priority, and will be used if Tracer is disabled or not installed. The Front Panel Setpoint has the lowest priority, and will be used if Tracer and the External CLS are both disabled.

Phase Loss Protection

Loss of phase detection protects the chiller motor from damage due to a single-phasing condition. The controls will shut down the chiller if any of the three phase currents feeding the motor are lost. The shutdown will result in a latching diagnostic indicating the failure. The motor is protected from over-current during a single-phase condition by the Current Overload Protection feature. Phase Loss Protection provides redundant protection and a diagnostic that more accurately describes the fault.

Reverse Rotation Protection

This function protects the compressor from being driven in the reverse direction. Incorrect phase rotation detection results in a manually resettable diagnostic. Phase Reversal protection is default to Enable, however can be disabled via the service tool.

Phase Imbalance Protection CH530 provides phase imbalance protection based on the average three-phase current. The three phase currents supplied to the motor are monitored for unequal amperage draw. Motor overload is not considered to be a problem since each phase of the motor is monitored for overcurrent. In addition, since each phase is monitored for loss of current, the motor will be protected against single phasing.

Under and Over Voltage Protection

Under/over voltage protection can be enabled (default) or disabled via TechView.

If Disabled : No effect.

If Enabled :

and an Overvoltage condition occurs:

-Diagnostic called when the average of the three line voltages is greater than 112.5% of the unit line voltage set point for 60 seconds.

-Diagnostic cleared when the average of the three line voltages is 110% or less of the unit line voltage set point.

and an Undervoltage condition occurs:

-Diagnostic called when the average of the three line voltages is less than 87.5% of the unit line voltage set point for 60 seconds.

-Diagnostic cleared when the average of the three line voltages is 90% or greater of the unit line voltage set point.

CVHE-SVU01E-EN

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Contents Operation Maintenance Read these carefully Contents About this manual General InformationLiterature change Unit NameplateCVHF091NAL00ACU2758W7E8TB C0000000K01G14C10W1A03B1Commonly Used Acronyms Control Optional PackagesOverview CvhfGeneral Information General Information Cooling Cycle Cvhf CompressorCVHE, Cvhg pressure enthalpy curve Cvhf pressure enthalpy curve TechView Chiller Service Tool DynaView Human InterfaceCVHE, CVHF, and Cvhg sequence of operation running General Information Surface Temperatures Oil and Refrigeration PumpOil refrigerant pump Base Loading Control Algorithm 20 100 percent RLAGeneral Information Ice Machine Control Free Cooling Cycle Free Cooling Frcl Hot Gas Bypass Hot Water control Heat Recovery Cycle Auxiliary CondensersControl Panel Devices and Unit Mounted Devices Unit Control Panel UCPUnit Control Panel UCP Variable water flow through the evaporator User-defined language supportOperator Interface DynaView main processorOperator Interface Chiller Stop Prevention/Inhibit Feature How It WorksTop Level Mode Description System Reset MinsecReference Main Screen Diagnostic Screen Back button provides navigation back to the chiller screen Operator Interface Reports Evaporator Report items Units Condenser Report Items UnitsRPM Compressor Report Items UnitsMotor Report Items Units Purge Report Items UnitsRLA Historic Diagnostics LogAshrae Chiller Log Units PPMChilled Water Setpoint Description Units Default Monitor Value Feature SettingsMode Overrides ChillerDisplay Settings Description Units DefaultPurge Operator Interface Operator Interface Operator Interface Operator Interface Operator Interface IPC3 Definitions Bus Management Interprocessor CommunicationInter Processor Communications IPC3 BindingControl panel components layout and approximate dimensions Control System ComponentsControl System Components Control Panel Devices Compressor Running Relay Machine Shutdown Manual Reset MMRHead Relief Request Output OpstRefrigerant Monitor Input 1A17 ExopTrmm TRM4 Tracer Comm 4 interface Frcl Free Cooling OptionHgbp Hot Gas Bypass Option Cdrp Condenser Refrigerant Pressure OutputCondenser Pressure Output Temperature basedPressure based Refrigerant Differential Pressure Indication Output Gbas Gbas Generic Building Automation SystemPercent RLA Output External Current Limit Setpoint Module CharacteristicsExternal Chilled Water Setpoint Ecws Wpsr WFC Water Pressure Sensing Option1A14 Communication interface Module 1A8, 1A9, 1A11, 1A12 Quad Relay Output Status1A13, 1A18, 1A19, 1A20 Dual Binary input module Comm +1A15, 1A16, 1A17, 1A21 Dual Analog Input/output Module Recommended Length to Run external Output signalsAnalog Input Unit mounted devices Electrical Sequence Control Sequence of OperationUCP and Wye-Delta Starter Control Circuits Delay time 200 msec. Opens 2K1 Control Sequence of Operation Test and start timing sequence AFD Momentary Power Loss MPL Protection Machine Protection Adaptive ControlCurrent Overload Protection Overload trip time versus percent RLACurrent Limit Protection Phase Loss ProtectionReverse Rotation Protection SoftLoading Differential to Start or StopMinimum and Maximum Capacity Limit Leaving Water Temperature Cutout Evaporator LimitLow Refrigerant Temperature Cutout Main Processor Software Revision 6.0 and higherCutout strategy Evaporator Variable Flow Compensation Condenser LimitRestart Inhibit Free Starts Restart Inhibit Start to Start Time SettingRestart Inhibit Clear Restart InhibitHigh Vacuum Lockout Oil Temperature Control Maximum Reset Controls Chilled Water Reset CWROutdoor Air Temperature Return WaterConstant Return Values for start reset typesDegrees of Reset EquationReset Ratio Outdoor air temperature versus degrees of resetReset function for return CWR Reset Ratio = 50% Return CWR Unit Startup Unit Start-Up ProceduresDaily Unit Start-Up Toxic Hazards Before changeover to heating modeLive Electrical Components Seasonal Unit Start-UpOil Pump Heater Operation Unit Shutdown ProceduresUnit Shutdown Seasonal Unit ShutdownMoisture Contamination Periodic MaintenanceDaily Maintenance and Checks Record Keeping FormsHazardous Voltage w/ Capacitors Weekly MaintenanceNormal Chiller Operating Characteristics Every 3 MonthsOff-Season Maintenance Annual MaintenanceHeater Damage Oil MaintenanceOil Change Procedure Compressor Oil Change onOil Filter Replacement Replacing Oil FilterOther Maintenance Requirements MaintenanceOil Supply System Problems LubricationDo not Leave Grease Fittings Installed Front View with Refrigerant PumpContains Refrigerant Refrigerant ChargeCleaning the Condenser Recovery and Recycle ConnectionsLeak Testing Proper Water TreatmentControl Settings Adjustments Cleaning the EvaporatorUnit Corrosion Damage Purge System Unit PreparationHazardous Voltage w/ Capacitors 100 101 102 103 104 105 106 107 108 109 110 111 Trane

CVHE-SVU01E-ENX39640712050 specifications

The Trane CVHE-SVU01E-ENX39640712050 is a high-efficiency centrifugal chiller designed for commercial and industrial applications. This state-of-the-art unit is engineered to provide reliable cooling performance, energy efficiency, and optimized operational flexibility. It is particularly suitable for large-scale facilities that require significant cooling capacity and robust performance under varying load conditions.

One of the most notable features of the CVHE-SVU01E series is its advanced variable speed drive technology. This technology enables the chiller to adjust its speed according to the cooling demands of the facility, resulting in substantial energy savings. By operating at optimal speeds, this unit reduces power consumption and enhances overall efficiency. This is noteworthy in the context of rising energy costs and increasing sustainability demands across various industries.

Moreover, the CVHE-SVU01E is equipped with Trane’s proprietary Compliant Scroll compressor technology. This innovative compressor design minimizes mechanical losses and increases the efficiency of the chiller system. Additionally, the compressor is specifically designed to handle varying refrigerant flow rates, allowing the chiller to maintain performance even when faced with fluctuating conditions.

Another significant characteristic of this chiller model is its use of environmentally friendly refrigerants, aligning with global regulations aimed at reducing greenhouse gas emissions. This commitment to sustainability ensures that the CVHE-SVU01E not only provides excellent cooling performance but also adheres to contemporary environmental standards.

The unit utilizes an advanced control system that simplifies operation and enhances troubleshooting capabilities. The intuitive interface allows facility managers to monitor performance metrics, optimize operation schedules, and conduct remote diagnostics, significantly reducing costly downtime and maintenance efforts.

Furthermore, the compact and modular design of the CVHE-SVU01E makes it easy to install in various settings. Its durability is ensured through the use of high-quality materials and components, designed to withstand the rigors of demanding environments. With reduced maintenance requirements, facility operators can focus on core business functions without frequent interruptions.

In summary, the Trane CVHE-SVU01E-ENX39640712050 combines cutting-edge technologies and features to deliver exceptional performance, efficiency, and reliability in commercial cooling applications. Its advanced design contributes to reduced energy costs, minimal environmental impact, and greater operational flexibility, making it an excellent choice for organizations seeking sustainable and efficient cooling solutions.
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