CLIMAVENETA CVM 3000 User Manual

TECHNICAL MANUAL
CVM 3000
C 5030 CV/04-99 GB
1
Summary
1 CONNECTIONS..............................................................................................................................8
1.1 TEMPERATURE PROBES.............................................................................................................8
1.2 PRESSURE PROBES.......................................................................................................................9
1.3 LOW VOLTAGE DIGITAL INPUTS............................................................................................10
1.4 LIVE DIGITAL INPUTS..............................................................................................................11
1.5 RELAY OUTPUTS......................................................................................................................12
2 VOLTAGE/FREQUENCY INPUT ...............................................................................................13
3 POWER SUPPLY..........................................................................................................................14
4 SERIAL CONNECTIONS............................................................................................................14
5 DESCRIPTION OF USER INTERFACE....................................................................................17
5.1 UNIT STARTUP..........................................................................................................................17
5.2 UNIT SHUTDOWN.....................................................................................................................17
5.3 ENABLING A COMPRESSOR ......................................................................................................17
5.4 DISABLING A COMPRESSOR .....................................................................................................18
5.5 MEANING OF COMPRESSOR STATUS LED'S (A2)..................................................................18
5.6 READING THE OPERATING CONDITIONS..............................................................................19
5.7 TEMPERATURE DISPLAY.........................................................................................................20
5.7.1 Version C (Chiller) ................................................................................................................20
5.7.2 Versions R/N/Q Chiller with recovery; Heat pumps; Multipurpose units .............................20
5.7.3 Version FC (Chiller with free-cooling) ..................................................................................21
5.8 OPERATING MODE SELECT ION ..............................................................................................22
5.8.1 Version R...............................................................................................................................22
5.8.2 Version N...............................................................................................................................22
5.8.3 Version FC.............................................................................................................................22
5.8.4 Version Q...............................................................................................................................23
5.9 SIGNALS......................................................................................................................................23
5.10 ALARMS.................................................................................................................................24
5.10.1 Circuit and/or compressor alarms......................................................................................24
5.10.2 General alarms....................................................................................................................25
5.11 FLASHING LED'S....................................................................................................................26
6 ALARM SIGNALS........................................................................................................................27
7 REGULATION................................................................................................................................30
7.1 CHILLED WATER REGULATION .............................................................................................30
7.1.1 Default set point settings........................................................................................................31
7.2 HOT WATER REGULATION .....................................................................................................32
7.2.1 Default set point settings........................................................................................................33
7.3 FREE-COOLING REGULATION (ONLY FC VERSION):............................................................34
7.3.1 Default set point settings........................................................................................................34

CLIMAVENETA CVM 3000 Specifications

General

Brand	CLIMAVENETA
Model	CVM 3000
Category	Chiller Control System
Language	English

Summary

Connections Overview

Temperature Probe Specifications

Details PTC-type temperature probes and their resistance values for calibration.

Pressure Transducer Data

Explains 4-20 mA pressure transducers and their function with bar/mA conversion.

Low Voltage Digital Input Signals

Describes low voltage digital inputs for various signals and remote control functions.

Live Digital Input Safety Signals

Explains live digital inputs requiring phase connection for safety signals.

Main and Expansion Board Relay Outputs

Lists all relay outputs on the main and expansion boards with their terminal numbers.

Electrical System

Voltage and Frequency Input Monitoring

Explains the input for monitoring voltage and frequency values and their verification.

Unit Power Supply Connections

Details the unit's power supply connections, including transformer specifications.

Serial Communication Interfaces

Describes COM1, COM2, COM3, and COM4 serial interfaces for data communication and remote connection.

User Interface and Operation

Unit Start-up, Shutdown, and Compressor Control

Guides on starting, stopping the unit, enabling/disabling compressors, and understanding status LEDs.

Reading Operating Conditions and Temperature Displays

Methods to visualize compressor parameters and display various temperature readings based on unit version.

Operating Mode Selection, Signals, and Alarms

Guides on selecting operating modes, understanding system signals, general alarms, and circuit/compressor alarms.

Flashing LED Indicators

Describes the meaning of flashing LEDs on the keyboard for status and alarm conditions.

Regulation and Control

Chilled Water Regulation Settings

Details the 4-step regulator for chilled water control, including set points and At values.

Hot Water Regulation Settings

Explains the 4-step regulator for hot water control, including set points and At values.

Free-Cooling Regulation Parameters

Covers regulation for free-cooling mode, including fan control and set point parameters.

System Management and Maintenance

Printing Functions and Printer Setup

Instructions for parameter printing, status reporting, alarm history, and printer setup.

Lamp Test and Hour Band Programming

Procedure for lamp testing, hour band programming, and execution.

EPROM Upgrading and Self-Calibration Procedures

Detailed procedures for upgrading EPROM software and performing unit self-calibration.

Accessing Programming Menus

Guides on accessing USER and FACTORY programming menus for configuration.

Parameters

Comprehensive Parameter List

Comprehensive list of machine, circuit, and compressor parameters with their ranges and defaults.

Screw Compressor Parameter List

Specific parameter list for units configured with screw compressors.

Enclosures

Unit Enclosure Diagrams

Visual representations of the CVM 3000 units (C, R, N) and their control panel layouts.