Digital Compressor Controller Overview Presentation

7/30/2019 Digital Compressor Controller Overview Presentation

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Digital Compressor ControllerDigital Compressor Controller

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Co eland Scroll Di ital ControllerCo eland Scroll Di ital ControllerCo eland Scroll Di ital ControllerCo eland Scroll Di ital Controller Simple Controller That Enables OEMs To Use Digital Scrolls

Relieves OEM From Develo in S ecial Controllers

Faster Time To Market

Copeland Controller Functions

- Compressor Contactor

- Capacity Modulation Solenoid

Protection

- Excessive Discharge Temperature

- Low Flow Conditions

-Diagnostics

- 8 Codes Indicating Faults

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Module Is Installed In System Cabinet


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Copeland ScrollCopeland Scroll Digital Digital

Com ressor Dia nosticsCom ressor Dia nostics


Com ressor Dia nosticsCom ressor Dia nosticsz Patented Copeland Diagnostics

z Green POWER LED

24VAC Indicator

Flashes During Anti-Short

z Yellow UNLOADER LED

Indicates Solenoid IsEnergized

z Red ALERT LED

as o e n ca ng cALERT Code Is Active

Code Interpreted By

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oun ng um er Flashes (1-9)


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Co eland Di ital Scroll ControllerCo eland Di ital Scroll ControllerCo eland Di ital Scroll ControllerCo eland Di ital Scroll Controller

OEM

Alarm

System Controller

ompressor

Capacity Request

(0-5 VDC)

Capacity

Solenoid

Capacity Signal

CONTACTORCompressor

Start / Stop

z Capacity Solenoid Control

Controller Modulates Solenoid Based On Ca acit Demand

Demand Is Read Once Every 20 Seconds

z Minor Alert Display Appropriate Alarm

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z Major Alert De-energize Contactor To Lock Out Compressor


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Copeland Digital Scroll ControllerCopeland Digital Scroll Controller

O tional Pressure Si nal FilterinO tional Pressure Si nal Filterin

Copeland Digital Scroll ControllerCopeland Digital Scroll Controller

O tional Pressure Si nal FilterinO tional Pressure Si nal Filterin

Alarm

Filtered Suction Pressure

OEMSystem Controller

Compressor

Capacity Request CapacitySolenoid

Capacity Signal

Suction Pressure

CONTACTORCompressor

Start / Stop

z Digital Controller Can Provide Suction Pressure Feedback

5 VDC Suction Pressure Transducer Required

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Algorithm Filters Suction Pressure Swings


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Demand Si nal vs. ModulationDemand Si nal vs. Modulation


Demand Si nal vs. ModulationDemand Si nal vs. Modulation

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Copeland Scroll Digital ControllerCopeland Scroll Digital Controller

Ke S ecificationsKe S ecifications


Ke S ecificationsKe S ecifications Size

- Depth 6 x Height 4 x Width 2

- Designed To Minimize Footprint In System Electrical Panel

Voltages- Controller Supply: 19-28VAC, 48-62Hz, 2VA Max

- Pilot Voltage Capabil ity: AC Voltages 24, 120, 240

Inputs- Minimum: Capacity Signal 1-5VDC, Discharge Thermistor (100K NTC)

- Optional : Suct ion Pressure Sensor (Controller Wil l Source 5VDC To Sensor)

Outputs- Minimum: Digital Solenoid, Compressor Contactor

- Optional : Suction Pressure, Alarm, Vapor Injection

Operator Interface- 3 LEDs : Green Indicating Module Health

Amber Indicatin Di ital Solenoid O eration

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Red - Up To 8 Flash Codes Indicating Operation Status


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Ke O erational FeaturesKe O erational Features


Ke O erational FeaturesKe O erational FeaturesOperation RulesDigital duty cycle of 15 seconds

Min Ca acit l imited to 10%

Scrolls unloaded for 0.5 sec on start up

Scrolls unloaded for 1 sec on shut down to prevent reverse rotation2 Min anti short cycle enforced on all shutdown

30 minute no start enforced on all hi h tem erature shutdown

Status Codes1 Future

Digital solenoid turned OFF on protector trip

2 High Discharge Temperature Td >268F,Reset Td


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Fault CodesFault Codes


Fault CodesFault Codes Alert Light Blinks When Any Of 7 Harmful System Conditions Is

Detected

Diagnost ic Alert Light

Blinks 2 Times

Action

Lockout

Alert Code

Code 2

System Condition

High Discharge Temp Trip

Blinks 3 Times

Blinks 4 Times

Blinks 5 Times

Lockout

Lockout

Lockout

Code 3

Code 4

Code 5

Compressor Protector Trip

Locked Rotor

Demand Signal Loss

Blinks 6 Times

N/A

Reduce Capacity

N/A

Code 6

Code 7

Discharge Thermistor Fault

Future

Blinks 9 Times

Trip Compressor

Code 9

Low Voltage

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ro ec ve au s a equ re anua ese


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Code 2Code 2 Hi h Dischar e Tem erature TriHi h Dischar e Tem erature TriCode 2Code 2 Hi h Dischar e Tem erature TriHi h Dischar e Tem erature Triz Event Trigger

Discharge temperature is above 268F OR discharge thermistoru u

z Action

Close alarm relay contacts Display Code 2 Alert Unloader solenoid deenergized

z Event Reset For Restarting Compressor

30 minute cool down timer AND discharge temperature below 250F

z Flash Code Clear/Alarm Relay Contact Open

Compressor must have 60 non-interrupted, ALERT free minutes of

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z Event Trigger

5 High Discharge Temperature trips within 4 hours

z Action

Deenergize compressor contactor Take Compressor Offl ine Close alarm relay contacts Display Code 2 Alert

Unloader solenoid deenergized


Controller 24VAC power must be cycled on and off

z as o e ear arm e ay on ac pen Controller 24VAC power must be cycled on and off

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Code 3Code 3 Com ressor Protector TriCom ressor Protector TriCode 3Code 3 Com ressor Protector TriCom ressor Protector Triz Event Trigger

Demand 1.4VDC or higher AND

Compressor internal overload protector open OR

Power disconnected to compressor (fuse, breaker, loose wire)

z c on

Deenergize compressor contactor Take Compressor Offl ine Close alarm rela contacts Dis la Code 3 Alert Unloader solenoid deenergized


Wait anti-short cycle timer delay (2 minutes)


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Demand 1.4VDC or higher AND compressor current detected


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Code 4Code 4 Locked RotorLocked RotorCode 4Code 4 Locked RotorLocked Rotorz Event Trigger

Controller senses a locked rotor condition in compressor

z

Action Deenergize compressor contactor Take Compressor Offl ine Close alarm relay contacts Display Code 4 Alert Unloader solenoid deenergized

z



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Code 5Code 5 Demand Si nal LossDemand Si nal LossCode 5Code 5 Demand Si nal LossDemand Si nal Lossz Event Trigger

Demand signal below 0.5VDC

z

Action Deenergize compressor contactor Take Compressor Offl ine Close alarm relay contacts Display Code 5 Alert Unloader solenoid deenergized

z

Demand signal above 0.5VDC AND anti-short cycle timer complete

Demand signal above 0.5VDC

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Code 6Code 6 Dischar e Thermistor FaultDischar e Thermistor FaultCode 6Code 6 Dischar e Thermistor FaultDischar e Thermistor Faultz Event Trigger

Discharge thermistor is not connected to CompressorController

z Action

m max mum capac y o compressor o un oa er modulation

Close alarm relay contacts Display Code 6 Alertz Event Reset For Restarting Compressor

Thermistor reconnected


Thermistor reconnected

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Code 8Code 8 Com ressor Contactor FaultCom ressor Contactor FaultCode 8Code 8 Com ressor Contactor FaultCom ressor Contactor Faultz Event Trigger

Compressor current is detected when demand is below 1.4VDC

z Action

Reenergizes compressor contactor

ose a arm re ay con ac s sp ays o e er Unloader solenoid energized

Net effect is to run com ressor unloaded until demand risesabove 1.4VDC again



Demand above 1.4VDC OR no com ressor current detected

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Code 9Code 9 Low 24VAC Su lLow 24VAC Su lCode 9Code 9 Low 24VAC Su lLow 24VAC Su lz Event Trigger

Compressor Controller 24VAC supply below 18.5VAC

z Action

Tri com ressor

Close alarm relay contacts Display Code 9 Alertz Event Reset For Restartin Com ressor

24VAC supply above 19.5VAC AND anti-short cycletimer complete


24VAC supply above 19.5VAC AND anti-short cycle

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mer comp e e

Digital Compressor Controller Overview Presentation

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