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Bard MC5000 Series User Manual

Bard MC5000 Series
55 pages
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Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual : 2100-746
Supersedes: NEW
Date: 8-20-20
INSTALLATION AND OPERATION
INSTRUCTIONS WITH
REPLACEMENT PARTS LIST
MC5000 Series Controller
Models:
MC5300: Controls up to Three Units
MC5600: Controls up to Six Units

Table of Contents

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Bard MC5000 Series Specifications

General IconGeneral
BrandBard
ModelMC5000 Series
CategoryController
LanguageEnglish

Summary

MC5000 Series Controller Overview

Engineered Features

Setup Procedures

Guided Set Up Overview

Introduces the guided setup feature with Equipment and System Set Up menus for configuration.

Set Points Configuration

Cooling Set Points

Guides on setting desired cooling temperatures for the system.

Heating Set Points

Guides on setting desired heating temperatures for the system.

Operation and Control

Basic Controller Specifications and Features

Details power input, display, HVAC outputs, and control stages of the MC5000.

Staging and Control Logic

Staging Configurations

Heating Staging Logic

How the controller stages heating based on temperature and set points.

Cooling Staging Logic

How the controller stages cooling based on temperature and set points.

Cooling with Economizer

Staging logic for cooling with an economizer and alternating sequence.

Advanced Staging Options

Twinning: Pairs

Reduces stages by engaging two units per stage for tighter temperature control.

Twinning: Triples

Reduces stages by engaging three units per stage for even tighter control.

Alternating and Non-Alternating Setup

Options for alternating or non-alternating staging logic for unit sequencing.

Twinning: Simultaneous Unit Operation

Units operate in groups (pairs/triples) for staging, reducing stage count.

Triples: Simultaneous Unit Operation

Units operate in groups of three for staging, enabling tighter control.

Alarm Functionality

General Alarm Behavior

How alarms trigger, display, and are logged, including user configuration options.

Temperature Alarms

Triggers for low, high temperature 1, and high temperature 2 alarms and their clearing conditions.

Humidity Alarms

Triggers for high and low humidity alarms and their clearing conditions.

Emergency Off Alarm

How the Emergency Off input disables all units and affects outputs.

Generator Run Alarm

How the Generator Run input affects unit operation and disables humidity controls.

Test Modes and Connectivity

Default Network Settings

Provides default IPv4 and IPv6 network configuration parameters.

Remote Connectivity Overview

Explains Ethernet connectivity for local monitoring and remote control via webpages.

Touch Screen Display IP Configuration

Steps to configure IP settings directly on the controller's touchscreen.

Webpage IP Configuration

Instructions for configuring network settings via the controller's web interface.

Modbus Communication

Enabling Modbus Feature

Steps to enable Modbus via webpages for controller access and monitoring.

Modbus Register Descriptions

Lists register addresses, descriptions, data types, and ranges for Modbus TCP/IP.

Modbus Input Registers

Details registers for reading system status, temperatures, and stage information.

Modbus Discrete Inputs

Lists discrete input registers for alarm status and unit control signals.

Troubleshooting

Checking Remote Temperature Sensor

Procedure to test the resistance of the 10K NTC remote temperature sensor.

Troubleshooting Alarms

Explains common alarms and potential causes or checks for resolution.

Low Temperature Alarm Troubleshooting

Addresses alarms related to low space temperature and potential causes.

High Temperature Alarms Troubleshooting

Addresses alarms related to high space temperatures and potential causes.

Emergency Off Alarm Troubleshooting

Checks continuity and wiring for the Emergency Off input.

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