Carrier 30GK manual Hardware Description, General Control board, Electronic boards, Control box

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3 - HARDWARE DESCRIPTION

3.1 - General

Control board

The various control components are arranged in modules within the control cabinet:

•

Control module: This comprises the basic board, the

 

user interface, the EXV control board and option boards,

 

as well as the customer’s terminal block.

9

2

•

Start-up module: This consists of the start-up boards,

1

3

8

4

 

Legend

7

6

5

 

 

 

1CCN connector

2Red LED, status of the board

3Green LED, communication bus SIO

4Orange LED, communication bus CCN

5Remote master board customer control connection contacts

6Remote master board customer control connection signal

7Remote master board customer report connection contacts

8Master PD4 basic board

9CCN/clock board

The control system consists of at least a PD4 basic board, a user interface, a PD4-EXV slave board and, depending on the application, one or more RCPM compressor boards, 4xDO boards or 4xAI-2xAO boards and an NRCP-BASE slave board. Slave boards are connected to the basic board via an internal communication bus (SIO).

The CCN/clock board is connected and screwed to the master basic board. It permits communication with elements of the Carrier Comfort Network via the CCN bus.

 

compressor protection boards, as well as the compressor

 

circuit breakers and contactors.

•

Fan module (air-cooled unit): Consists of one or two

 

4xDO boards together with the fan circuit breakers and

 

contactors.

3.2 - Electronic boards

3.2.1 - The basic board

It can be used alone or in conjunction with slave boards. It holds the program that controls the machine. It continuously manages the information coming in from the various pressure and temperature sensors, and communicates with the slave boards via the SIO bus. It can also communicate with elements of the Carrier Comfort Network via the CCN bus.

NOTE: After a power cut the unit restarts in the same operating mode as before the power cut.

3.2.2 - Slave boards

•Compressor board RCPM: This board is used to control a compressor. Up to eight RCPM boards can be connected to the basic board.

•4xDO board: This board can be used to control fan stages.

•PD4-EXV board: This board can control two EXV valves and two suction temperature sensors.

•4xAI-2xAO board: This optional board can be used to read sensors (oil pressure), or to control variable speed fans (air-cooled units) or the condenser valve (water-cooled units).

•NRCP-BASE board: This optional board is used to control the inputs and outputs of the heat reclaim option.

Control box

Legend

3

Compressor start-up module

1

Power supply disconnect switch

4

Control system

2

Fan start-up module

5

User interface

6

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Contents Installation, operation and maintenance instructions 30GK Series PRO-DIALOG ControlTable of Contents Safety Considerations Diagnostics Troubleshooting Safety Considerations GeneralAvoiding electrocution General Description Abbreviations usedElectronic boards Hardware DescriptionGeneral Control board Control boxGreen LED Board addressesRed LED Orange LED CCN/clock boardCondenser entering and leaving water temperature sensors Evaporator entering water temperature sensorEvaporator leaving water temperature sensor Heat reclaim condenser entering/leaving water temperaturesAvailable Terminals Description Connector Terminal ChannelUser connections RemarksMain interface Setting UP PRO-DIALOG Plus ControlLocal interface general features Main Interface Button Name DescriptionDescription Stopping the unit in local modeUnit start/stop control Starting unit and selecting an operating typeSelecting a menu Modifying the value of a parameter/access to a sub- menuMenus Selecting a menu itemMenu StructureMenu tree StatusDescription of the Information menu Information Menu Format Units DescriptionDescription of the Pressures menu Description of the Temperatures menuTemperatures Menu Format Units Comments Pressures Menu Format Units CommentsDescription of the Setpoints menu Setpoints Menu Format Units Range CommentsMenu description Description of the Inputs menuDescription of the Outputs/Tests menu General Inputs Menu Format Units CommentsFormat Units Description Description of the Configuration menu General PasswordManual tests SUB-MENU Period Configuration SUB-MENU Holiday ConfigurationDescription of the User 1 Configuration sub-menu User 1 Configuration SUB-MENU Format Units Default CommentsDescription of the User 2 Configuration sub-menu Description of Date and Time configuration sub MenuDate & Time Configuration SUB-MENU Format Comments Description of the Broadcast sub-menu Typical timer programDescription of the Holidays sub-menus Item # Format CommentsBroadcast Configuration SUB-MENU Item # Format Comments Description of the Alarms menuDescription of the Alarms History menu Alarms Menu Item # Format DescriptionMaintenance menu description Runtime menu description Description of the Runtimes 2 menuDescription of the Runtimes 1 menu Start/stop control Chilss Contact Type Mode ShutdownPRO-DIALOG Plus Control Operation Heating/cooling selectionEvaporator heater control Evaporator water pump control Control interlock contactCondenser water pump control Control pointCapacity control Demand limit by 0-10 V d.c. signalDemand limit Determining the lead circuitHead pressure control on air-cooled units Slave compressor start-up sequenceControlling the EXV Head pressure control on water-cooled unitsPumping down Master/slave assemblyHigh pressure load shedding function Controlling Pro-Dialog Plus units with a System ManagerResetting alarms Diagnostics TroubleshootingDisplaying alarms Optional heat reclaim moduleAlarm codes Alarm Code DescriptionsCCN Compressor protection devices Compressor faults 6.4.1.1 GeneralDGT only for units with low-temperature option Starter Guard

30GK specifications

The Carrier 30GK is a prominent chiller model known for its efficiency and reliability in various commercial and industrial applications. Offering a blend of advanced technology and robust design, the 30GK series caters to diverse cooling needs while maintaining energy efficiency and low operational costs.

One of the standout features of the 30GK is its use of the latest scroll compressor technology. This contributes to its efficient performance, enabling the chiller to operate at optimal levels while minimizing energy consumption. The scroll compressor is known for its quiet operation, which reduces noise pollution, making it an ideal choice for buildings located in noise-sensitive environments.

The 30GK chiller series is equipped with microchannel coil technology, which allows for improved heat exchange efficiency. The microchannel design uses a compact coil structure that enhances refrigerant flow and reduces refrigerant volume, leading to a smaller footprint compared to traditional coil designs. This innovative design not only saves space but also improves the chiller's overall performance.

Another notable characteristic of the Carrier 30GK is its environmental consciousness. The chiller operates using environmentally friendly refrigerants, aligning with modern regulations and sustainability goals. Its design incorporates energy-efficient components that contribute to significant reductions in greenhouse gas emissions, making it suitable for environmentally responsible projects.

Moreover, the 30GK is designed for easy serviceability, with accessible components that simplify maintenance. This feature is particularly important for facility managers seeking to minimize downtime and keep maintenance costs low. The chiller also includes advanced monitoring and control systems, which enable real-time performance tracking and diagnostics, enhancing operational efficiency.

In terms of performance, the 30GK chiller is known for its wide capacity range, making it versatile for various applications. Whether for commercial spaces, industrial processes, or large buildings, the 30GK can meet the cooling demands reliably.

Overall, the Carrier 30GK chiller represents a perfect balance of cutting-edge technology, energy efficiency, and sustainability. Its features make it a leading choice in the market, suited for those looking to invest in high-quality and dependable cooling solutions.
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