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Related Manuals for Danfoss 084B8020
Summarization of Contents
Introduction
Application Overview
Details the controller's use in appliance and cold storage control.
Key Features and Principle
Highlights benefits like energy optimization, data communication, and operational principles.
Applications
Application Types
Covers standard applications and specific configurations for two evaporators/refrigeration sections.
Detailed Application Scenarios
Details general use, applications 1-4, and specific configurations for applications 5-10.
Operation Modes
Liquid Injection and Temperature Control
Explains valve control, ON/OFF, and modulating temperature strategies.
Temperature Monitoring and Alarms
Details alarm monitoring with sensor weighting and limits.
Defrost Management
Defrost Sequence, Methods, and Initiation
Outlines defrost steps, methods (natural, electric, hot gas), and start/stop procedures.
Advanced Defrost Features
Explains coordinated defrost, defrost on demand, and melting function.
System Controls
Compressor and Railheat Control
Details two-compressor operation and pulse control for rail heat.
Fan, Light, and Night Blind Control
Covers fan operations, light function, and motorized night blinds.
Input/Output and Communication
Digital Inputs and Forced Closing
Details functions for digital inputs and forced valve closure.
Data Communication and Display
Covers MODBUS, Lon RS485, and EKA display connectivity.
Terminal Connections
Connection Signs
Explains factory-applied labels indicating application numbers.
Terminal Assignments
Details connections for digital inputs, sensors, display, and communication interfaces.
Function Survey - Core Settings
Display and Thermostat Settings
Covers temperature display, set points, differential, and unit settings.
Setpoint Limitations and Refrigeration Control
Explains setting ranges, signal corrections, and start/stop of refrigeration.
Function Survey - Alarms and Advanced
Alarm Management
Sets upper/lower temperature limits and time delays for alarms.
Compressor and Defrost Control Parameters
Covers compressor running times and defrost method/interval settings.
System Status and Faults
Operating Status Codes
Lists codes displayed for controller operating states and conditions.
Fault Message Interpretation
Details error codes and alarm messages for troubleshooting system issues.
Controller Interface and Setup
Display, LEDs, and Buttons
Explains the controller's interface elements for monitoring and control.
Initial Setup Procedure
Provides steps for initial configuration and starting regulation.
Configuration Tools
Quick-Setup Schedules
Offers predefined settings for various cases and rooms.
Menu Survey and Parameter Reference
Provides a comprehensive overview of controller parameters and their settings.
Data and Ordering
Technical Data Specifications
Lists technical data, electrical specifications, and environmental conditions.
Ordering Information
Provides product codes and examples for ordering controllers and accessories.
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