Control Overview; Control System; System Functionalities; Operating Modes - Carrier SmartVu control Manual

2 - CONTROL OVERVIEW

2.1 - Control system

30RBS chillers and 30RQS heat pumps come with a SmartVu
control that serves as the user interface and configuration tool for
Carrier communicating devices.
SmartVu is an electronic control system used to regulate
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the following types of units:
■ 30RBS air-cooled liquid chillers
■ 30RQS reversible heat pumps
SmartVu control can function as a stand-alone system or it may
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be connected to the building management system using CCN
communication bus.
30RBS and 30RQS units may be fitted with standard fixed speed
fan control system or the optional variable speed fan drives which
can reduce the unit energy use during occupied and unoccupied
periods, provide condensing or evaporating pressure control and
smooth fan start.
For both 30RBS chillers and 30RQS heat pumps the system may
control fixed speed pumps or variable speed pumps with a hydronic
module.
IMPORTANT: This document may refer to optional components
and certain functions, options or accessories may not be
available for the specific unit.
Features overview
Feature
4.3'' touch screen ( SmartVu
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Web connectivity
E-mail transmission
Carrier Connect Services
Language packs (+ language pack customization)
Metric / Imperial unit display
BMS connection
Modbus RTU / Modbus TCP communication (option 149B)
BACnet IP communication (option 149)
CCN communication
Scroll compressor technology
Defrost mechanism
Free defrost mechanism
Brine (option 5, option 6)
Diagnostics
User quick test
Variable speed fans
High static fan
Fixed or variable speed pumps
Cooling control
Heating control
Boiler heating control
Electric heating control
Dry Cooler Free Cooling control (DCFC)
Desuperheater
6
)

2.2 - System functionalities

The system controls the start-up of the compressors needed to
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maintain the desired heat exchanger entering and leaving water
temperature. It constantly manages the operation of the fans in
order to maintain the correct refrigerant pressure in each circuit
and monitors safety devices that protect the unit against failure
and guarantee its optimal functioning.
SmartVu control system:
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■ Allows users to control the unit via the SmartVu
■ Provides web connectivity technology.
■ Supports Carrier Connect Services (Remote connectivity, alarm
notification, remote access, performance and operation
automatic reporting, technical advice).
■ Supports Carrier Advanced Plant System Manager for multiple
chillers/heat pumps configuration.
■ Provides direct BMS integration capabilities (RS485 / Ethernet)

2.3 - Operating modes

The control can operate in three independent modes:
■ Local mode: The unit is controlled by commands from the user
interface.
■ Remote mode: The unit is controlled by dry contacts.
■ Network mode: The unit is controlled by network commands
(CCN / BACnet / Modbus). Data communication cable is used
to connect the unit to the CCN communication bus.
When the control operates autonomously (Local or Remote),
it retains all of its control capabilities but does not offer any of the
features of the Network.
Emergency stop! The Network emergency stop command
stops the unit regardless of its active operating type.
Chillers (30RBS)
Standard Option
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
user interface.
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Heat pumps (30RQS)
Standard Option
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X