Carrier 30GN040-420 Keypad and Display Module Usage, Functions and Subfunctions

Page 26

Table 6 Ð Keypad and Display Module Usage

FUNCTION

USE

KEYS

 

 

STATUS Ð For displaying diagnostic codes and

 

current operating information about the machine.

 

HISTORY Ð For displaying run time, cycles and

 

previous alarms.

 

SERVICE Ð For entering speci®c unit con®gura-

 

tion information.

 

TEST Ð For checking inputs and outputs for

 

proper operation.

 

SCHEDULE Ð For entering occupied/unoccupied

 

schedules for unit operation.

 

SET POINT Ð For entering operating set points

 

and day/time information.

OPERATIVE

USE

KEYS

 

 

EXPAND Ð For displaying a non-abbreviated ex-

 

pansion of the display.

 

CLEAR Ð For clearing the screen of all displays.

 

UP ARROW Ð For returning to previous display

 

position.

 

DOWN ARROW Ð For advancing to next display

 

position.

 

ENTER Ð For entering data.

 

 

3.All functions are made up of a group of subfunctions. To enter a subfunction, ®rst press subfunction number de- sired. Then press the function key in which the subfunc- tion resides. To move within that subfunction, press

the or arrow. For example, a enters the Temperature Information subfunction.

4.At any time, another subfunction may be entered by press- ing the subfunction number, then the function key.

5.Prior to starting unit, check leaving ¯uid set point for cor- rect setting. Refer to Set Point Function section on page 38.

6.Depending on system con®guration, all displays may not be shown. All displays are shown unless marked with the following symbol:

²Must be con®gured.

For additional unit start-up procedures, see separate Installation, Start-Up, and Service Instructions supplied with unit.

Table 7 Ð Functions and Subfunctions

 

 

 

FUNCTIONS

 

 

 

SUBFUNCTION

Status

Test

Schedule

Service

History

 

Set Point

NO.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Automatic

Outputs

Override

Log On and

Run Time

 

Set Points

 

Display

 

 

Log Off

 

 

(Chiller Fluid)

2

Alarm

Compressors

Clock Select

Version

Starts

 

Reset

 

Display

and Unloaders

 

(Software)

 

 

Set Points

3

Mode (Operating)

Calibrate

Period 1

Factory

Alarm

 

Demand Limit

 

Display

Transducers

 

Con®guration

History

 

Set Points

4

Capacity

Ð

Period 2

Field

Ð

 

Date and

 

Stages

 

 

Con®guration

 

 

Time

5

Set Points

Ð

Period 3

Service

Ð

 

Leaving Chiller

 

(Current Operating)

 

 

Con®guration

 

 

Fluid Alert Limit

6

Temperatures

Ð

Period 4

Ð

Ð

 

Ð

7

Pressures

Ð

Period 5

Ð

Ð

 

Ð

8

Analog Inputs

Ð

Period 6

Ð

Ð

 

Ð

9

Discrete Inputs

Ð

Period 7

Ð

Ð

 

Ð

10

Outputs

Ð

Period 8

Ð

Ð

 

Ð

11

Ð

Ð

HOLIDAYS

Ð

Ð

Ð

 

 

 

 

 

 

 

 

 

26

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Contents Controls, Operation, Troubleshooting Tons Unit 30GN Unit Sizes and Modular CombinationsUnit Model Nominal Section a Section B 30GN Control Panel 040-110 Unit Shown Keypad and Display Module Also Called Hsio LOCAL/ENABLE-STOP-CCN Switch Positions and OperationLOCAL/ENABLE StopThermistors Compressor Protection Control Module CpcsThermistor and Transducer Locations Pressure TransducersSteps Ð Capacity Control StepsLoading Sequence a Loading Sequence B Unit Control Ð Capacity Control Steps, 040-070 Ð Capacity Control Steps, 040-070 A1²**, B1² Displacement Compressors Approx 080, 230B 60 HzA1²,B1² A1²**,B1²090, 245B 50 Hz Compressors Displacement090, 245B 60 Hz 100, 255B 270B 60 HzUnit Control Loading Sequence a Loading Sequence B 270B 50 Hz315B 50 Hz 110, 290B315B 60 Hz A1*,A2,B1 A1,A2,B1 A1²²,A2,B1,B2 A1*,A2,B1,B2 130 60 Hz 130 50 Hz 150, 230A, 245AA1,kB1 170, 270A 330A/B 60 Hz330A/B,360B 50 Hz 330A/B, 360B 50 Hz A1,B1 Approx 190, 290A, 360A/B390B 60 Hz A1**,B1210, 315A, 390A 420A/B 60 Hz420A/B 50 Hz Head Pressure Control PumpoutCondenser Fan Sequence FAN Arrangement FAN Numbers FAN Contactor Controlled byFunction USE Keys Keypad and Display Module UsageFunctions and Subfunctions Operative USE KeysAccessing Functions and Subfunctions Keypad DirectorySubfunction Keypad Entry Display Comment Stage TemperatureKeypad Directory Status SET PointInputs Subfunction Keypad Entry Display Comment PressureAnalog OutputsSubfunction Keypad Entry Display Comment Compressors Subfunction Keypad Entry Display CommentSubfunction Keypad Entry Display Comment Outputs Unloaders CPA1Keypad Directory Test Keypad Directory Schedule Service Keypad Directory ServiceConfiguration Subfunction Keypad Entry Display Comment FactoryStarts ALARM/ALERTSubfunction Keypad Entry Display Comment RUN Time HISTORY²²Demand SET Points Reset SET PointsSubfunction Keypad Entry Display Comment SET Points Date and TimeKeypad Display Comments Entry Response Example 1 Ð Reading Alarm CodesExample 2 Ð Reading Current Operating Modes Operational and Mode Display Codes Example 3 Ð Using Test Function Reset Set PointsExample 4 Ð Reading and Changing Chilled Fluid Set Point Example 5A Ð External ResetReset Amounts Measurement Method Input Data DescriptionExample 5C Ð Using Return Fluid Temperature Reset Keypad Display Comments Entry ResponseComm Ð Communications Bus PowerSwitch PWRSUB Keypad Display Comment Service FunctionsPassword LoggedonTo Disable Demand Limit Example 8 Ð Setting Time of Day Day of Week4-20 mA Demand Limiting Adjustable Field Congurations Factory Conguration KeystrokesProgramming Period Example 9 Ð Using the Schedule FunctionKeypad Display Comment Entry Keypad Display Comment Entry Programming PeriodExample 10 Ð Holiday Schedule Function Enter DisplayTypical Stoppage Faults and Reset Types Stop position. Unit cannot start if these contacts areAlarm and Alert Codes LOCAL/ENABLE-STOP-CCNWSM CpcsFSM Dsio COM, CommDGT HPSComm CGF Subfunction. Groups Electronic Expansion Valve EXV EXV Cable Connections to EXV Driver Module, Dsio EXV Thermistor Replacement T1, T2, T7, T8 Temperature Voltage Resistance Drop Ohms Temperature Voltage Resistance Drop Thermistor and Pressure Transducer Locations Thermistor Locations Circuits a and B, Lead Compressor Only Lead Compressor Transducer and Thermistor Locations Module Address Selector Switch Locations Control ModulesAccessory Unloader Installation Installation 4 In/4 Out Module SIOTroubleshooting Standard and Accessory UnloadersPage Hgbpr Ð Or HGBPR-A²Or HGBPR-B COMCWP Ð Chilled Water Fluid Pump Externally PoweredOutdoor-Air Temperature TB Ð Terminal BlockRemote Alarm InterlocksPage Copyright 1995 Carrier Corporation

30GN040-420 specifications

The Carrier 30GN040-420 is a well-regarded model within the industry of chillers, designed to deliver efficient cooling solutions for a variety of commercial applications. Its compact design and advanced technology make it an ideal choice for businesses looking to optimize their HVAC systems.

One of the standout features of the Carrier 30GN series is its flexibility. This chiller model is available in a range of capacities, specifically from 40 to 420 tons, allowing for customized solutions based on specific cooling demands. Such versatility enables this unit to cater to a broad array of installations, from small commercial spaces to larger industrial facilities.

The Carrier 30GN040-420 utilizes a scroll compressor design, known for its reliability and efficiency. The scroll technology allows for a reduction in the number of moving parts, resulting in lower maintenance costs and increased durability. Additionally, the unit operates with environmentally friendly refrigerants such as R-410A, promoting sustainability without compromising performance.

Energy efficiency is another significant aspect of this model. The 30GN series is designed to provide high energy efficiency ratios (EER), which translates to lower operational costs for users over the lifespan of the unit. This is particularly beneficial in an era where energy costs are consistently rising.

The advanced controls found within the Carrier 30GN040-420 further enhance its performance and ease of use. The unit is equipped with a microprocessor-based control system that allows for precise temperature management while providing valuable diagnostic information. This feature not only improves the overall reliability of the system but also facilitates proactive maintenance, reducing the risk of unscheduled downtime.

Moreover, the design of the Carrier 30GN040-420 emphasizes quiet operation, making it suitable for environments where noise levels must be minimized. This characteristic is critical for applications in hospitals, schools, or office buildings, where a peaceful atmosphere is essential.

In summary, the Carrier 30GN040-420 chiller provides a robust solution for businesses requiring dependable and efficient cooling. Its features, including flexible capacity options, reliable scroll compressors, energy-efficient performance, advanced controls, and quiet operation, position it as a top choice for various commercial and industrial applications. As technology continues to evolve, models such as the 30GN series remain at the forefront, meeting the demands of modern HVAC needs while ensuring sustainability and efficiency.
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