Carrier 30GK manual Unit start/stop control, Description, Stopping the unit in local mode

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The summary interface (right hand section) includes a mimic diagram of the unit, together with push-buttons and LEDs. It gives quick access to the main operating parameters of the unit.

SUMMARY INTERFACE LEDS

LED INDICATION WHEN LIT

Green LED:

The unit is authorised to start or is already running

Red LED:

- Lit: circuit A or unit shut down by alarm

- Flashing: circuit A or unit running with alarm present

Red LED:

- Lit: circuit B or unit shut down by alarm

- Flashing: circuit B or unit running with alarm present

Red LED:

Water flow switch default or user safety lock open.

Green LED:

The evaporator pump is running.

Yellow LEDs:

From top to bottom - start/stop status of compressors A1, A2, A3 and A4 or B1, B2, B3 and B4. Flashing LED indicates that the circuit is in the protection or defrost mode (A or B).

Green LED:

The unit operates in heating mode.

Green LED:

The unit operates in cooling mode.

SUMMARY INTERFACE PUSH BUTTONS

BUTTON DISPLAY

Blue button: evaporator leaving or entering water temperature in °C

Gray button: outdoor air temperature in °C

Control point (setpoint + reset) in °C

kPaPress 1: circuit A/B discharge pressure in kPa

Press 2: circuit A/B saturated condensing temperature in °C

kPaPress 1: circuit A/B suction pressure in kPa

Press 2: circuit A/B saturated suction temperature in °C

Press 1: compressor A1/B1 operating hours in h/10 or h/100

Press 2: compressor A2/B2 operating hours in h/10 or h/100

4.2 - Unit start/stop control

4.2.1 - Description

The unit start/stop can be controlled by one of the following methods:

•Locally on the actual unit (Local control type)

•By remote control with the aid of user contacts (remote control type)

•By CCN control with the aid of the CCN (CCN control type)

The main interface includes a Start/Stop button which can be used to stop or start the unit in the local operating type or to select the remote or CCN operating type.

The available operating types are described in the following table.

The following operating types can be selected using the Start/Stop button:

OPERATINGTYPES

4-DIGIT DISPLAY

DESCRIPTION

LOFF

Local Off. The unit is halted in local mode.

 

 

L-On

Local On. The unit is in local control mode and is authorised

 

to start.

 

 

L-Sc*

Local On - timer control. The unit is in local control mode. It

 

is authorised to start if the period is occupied. If the timer

 

program for unit operation is unoccupied, the unit remains

 

shut down until the period next becomes occupied.

CCN*

CCN. The unit is controlled by CCN commands.

rEM*

Remote. The unit is controlled by remote control contacts.

MAST*

Master Unit. The unit runs as a master in a two unit lead/lag

 

arrangement. This is displayed if the unit is configured for

 

master/slave control. See section 5.19.

 

 

Legend

*Displayed if the configuration requires it.

Section 5.1 gives a more detailed description of the commands to start/stop the unit, analysed by operating type.

4.2.2 - Stopping the unit in local mode

The unit can be stopped in local mode at any time by pressing the Start/Stop button.

TO STOP THE UNIT

BUTTON ACTION

2-DIGIT DISPLAY

4-DIGIT DISPLAY

Press the Start/Stop

C

LOFF

button for less than

 

 

4 seconds (one short

 

 

press is enough).

 

 

If the button is

t

LOFF

released, the unit stops

 

 

without the need for

 

 

further action.

 

 

 

 

 

4.2.3 - Starting unit and selecting an operating type

The unit can be started in local mode, or unit operating type can be changed at any time using the Start/Stop button. In the example that follows, the unit is stopped (LOFF) and the user wants to start the unit in local mode.

CHANGING THE OPERATING TYPE

BUTTON ACTION

2-DIGIT

4-DIGIT

 

DISPLAY

DISPLAY

 

 

 

Continually press the operating type selection

C

LOFF

button for more than 4 seconds.

 

 

 

 

Hold down the Start/Stop button.

 

L-On

The available operating types are displayed

 

L-Sc

one by one until the button is released.

 

 

 

 

 

rEM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Release the Start/Stop button if the operating

 

L-On

type you want is displayed (in this example L-

 

 

 

 

On). "C" flashes in the 2-digit display to show

 

 

 

 

that the controller is awaiting confirmation.

 

 

 

 

 

 

 

Press the Enter button to confirm the

t

L-On

operating type selected (in this example: L-

 

 

 

 

On). "t" is displayed in the 2-digit display to

 

 

 

 

indicate the operating type selected. If the

 

 

 

 

Enter button is not pressed soon enough, the

 

 

 

 

controller will cancel the change and continue

 

 

 

 

to use the previous operating type.

 

 

 

 

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Contents 30GK Series PRO-DIALOG Control Installation, operation and maintenance instructionsTable of Contents Safety Considerations Diagnostics Troubleshooting Avoiding electrocution Safety ConsiderationsGeneral Abbreviations used General DescriptionControl box Hardware DescriptionGeneral Control board Electronic boardsOrange LED CCN/clock board Board addressesRed LED Green LEDHeat reclaim condenser entering/leaving water temperatures Evaporator entering water temperature sensorEvaporator leaving water temperature sensor Condenser entering and leaving water temperature sensorsRemarks Description Connector Terminal ChannelUser connections Available TerminalsMain Interface Button Name Description Setting UP PRO-DIALOG Plus ControlLocal interface general features Main interfaceStarting unit and selecting an operating type Stopping the unit in local modeUnit start/stop control DescriptionSelecting a menu item Modifying the value of a parameter/access to a sub- menuMenus Selecting a menuStructure MenuStatus Menu treeInformation Menu Format Units Description Description of the Information menuPressures Menu Format Units Comments Description of the Temperatures menuTemperatures Menu Format Units Comments Description of the Pressures menuSetpoints Menu Format Units Range Comments Description of the Setpoints menuInputs Menu Format Units Comments Description of the Inputs menuDescription of the Outputs/Tests menu General Menu descriptionFormat Units Description Manual tests Description of the Configuration menu GeneralPassword SUB-MENU Holiday Configuration SUB-MENU Period ConfigurationUser 1 Configuration SUB-MENU Format Units Default Comments Description of the User 1 Configuration sub-menuDate & Time Configuration SUB-MENU Format Comments Description of the User 2 Configuration sub-menuDescription of Date and Time configuration sub Menu Item # Format Comments Typical timer programDescription of the Holidays sub-menus Description of the Broadcast sub-menuAlarms Menu Item # Format Description Description of the Alarms menuDescription of the Alarms History menu Broadcast Configuration SUB-MENU Item # Format CommentsDescription of the Runtimes 1 menu Maintenance menu descriptionRuntime menu description Description of the Runtimes 2 menu Heating/cooling selection Chilss Contact Type Mode ShutdownPRO-DIALOG Plus Control Operation Start/stop controlControl point Evaporator water pump control Control interlock contactCondenser water pump control Evaporator heater controlDetermining the lead circuit Demand limit by 0-10 V d.c. signalDemand limit Capacity controlHead pressure control on water-cooled units Slave compressor start-up sequenceControlling the EXV Head pressure control on air-cooled unitsControlling Pro-Dialog Plus units with a System Manager Master/slave assemblyHigh pressure load shedding function Pumping downOptional heat reclaim module Diagnostics TroubleshootingDisplaying alarms Resetting alarmsAlarm Code Descriptions Alarm codesCCN Starter Guard Compressor faults 6.4.1.1 GeneralDGT only for units with low-temperature option Compressor protection devices

30GK specifications

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