Eaton Cutler-Hammer ATC-300 User Manual

IB01602009E For more information visit: www.eatonelectrical.com
O & M Manual for the EATON ATC-300
Automatic Transfer Switch Controller
Instruction Booklet
New Information
Description Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Status Monitoring and Setpoints . . . . . . . . . . . . . . . . . . 11
Typical Function of the ATC-300 Controller . . . . . . . . . . . 13
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Troubleshooting and Maintenance . . . . . . . . . . . . . . . . . 23
Appendix A: Display Messages for Status and Timers . . . . 25
Appendix B: Operational Flowcharts . . . . . . . . . . . . . . . . 26
Appendix C: Display Menu Tree . . . . . . . . . . . . . . . . . . . 29
Appendix D: Pickup / Dropout Tables . . . . . . . . . . . . . . . 35

Eaton Cutler-Hammer ATC-300 Specifications

General

Frequency	50/60 Hz
Control Voltage	12 VDC
Type	Automatic Transfer Controller
Phase	Single
Operating Temperature	-20°C to +70°C (-4°F to +158°F)
Enclosure Rating	NEMA 3R

Summary

Section 1: Introduction

1.1 Preliminary Comments and Safety Precautions

Covers installation, application, operation, maintenance, and safety precautions for the ATC-300 Controller.

1.2 Background

Explains the function of transfer switches and the role of the ATC-300 controller in ATS systems.

1.3 Product Overview

Describes the ATC-300 Controller as a comprehensive, multi-function, microprocessor-based ATS controller.

1.4 Glossary

Defines key terminology used in the document related to ATS and controller operation.

1.5 Functions/Features/Options

Details the primary functions, features, and options of the ATC-300 Controller for ATS operation.

Section 2: Hardware Description

2.1 General

Provides an overview of the ATC-300 Controller hardware, nomenclature, and specifications.

2.2 Front (Operator) Panel

Describes the front panel components, including the LCD display, LEDs, and input pushbuttons.

2.3 Rear Access Area

Details the rear access area of the ATC-300 Controller, including connector locations and functions.

2.4 Specification Summary

Presents a summary of the ATC-300 Controller's technical specifications in a table format.

Section 3: Status Monitoring and Setpoints

3.1 Status Display

Covers status displays, source information, time/date, history logs, setpoints, and help messages.

Section 4: Typical Function of the ATC-300 Controller

4.1 Controller Operation

Explains how the ATC-300 controller operates, including input/output connections and power supply.

4.2 Connector and Terminal Descriptions

Details the function of various connectors (J1, J2, J3, J4, J5, J7, J8) on the ATC-300 Controller.

Section 5: Operation

5.1 General

Provides an overview of the operation and functional use of the ATC-300 Controller.

5.2 Automatic Mode

Describes the automatic transfer and re-transfer operations dictated by features and setpoints.

5.3 Monitor Mode

Explains the special operating mode where the ATC-300 monitors sources but does not control transfers.

5.4 Control Inputs

Details the five individual DC wetted input control signals and their definitions.

5.5 Output Relay

Describes the dry relay contacts used for primary control outputs and their ratings.

5.6 Operating Voltage and Measurements

Covers the operating voltage range, measurements, and supercap functionality for the ATC-300.

5.7 Engine Test

Details the procedure and modes for performing periodic tests of the generator system.

5.8 Plant Exerciser

Explains the feature for automatic programming of generator test cycles on a daily or periodic basis.

5.9 In-phase Transition

Describes the feature allowing transfer between sources with a small phase angle difference.

5.10 Program Mode

Explains how to access and use the device's faceplate for programming setpoints and parameters.

Section 6: Programming

6.1 Introduction

Introduces the programmability of the ATC-300 Controller via faceplate or communication port.

6.2 Password

Details the procedure for entering and changing the password to access programming screens.

6.3 Display Only Mode

Explains how to view setpoints and programmed values without making changes.

6.4 Change Setpoints Mode

Describes how to step through and change setpoint values using the front panel interface.

6.5 Programmable Features and Setpoints

Lists programmable features and setpoint possibilities, referring to Table 2 for details.

Section 7: Troubleshooting and Maintenance

7.1 Level of Repair

Defines the scope of troubleshooting and when to replace or return the ATC-300 unit.

7.2 ATC-300 Controller Troubleshooting

Provides a guide to identify problems as external or internal and offers possible solutions.

7.3 ATC-300 Replacement

Outlines the procedural steps required to safely replace the ATC-300 controller unit.

7.4 Maintenance and Care

States that the ATC-300 is self-contained and maintenance-free, intended for factory-trained personnel.

Appendix A: Display Messages for Status and Timers

Display Message Descriptions

Lists and explains various display messages for status and timers used by the ATC-300 Controller.

Appendix B: Operational Flowcharts

Utility - Generator Transfer Switch Flowchart

Illustrates the operational sequence for utility to generator transfer.

Dual Utility Transfer Switch Flowchart

Illustrates the operational sequence for transfer between two utility sources.

In-phase Transition Implementation Flowchart

Illustrates the operational sequence for in-phase transition between sources.

Appendix C: Display Menu Tree

ATC-300 Display Menu Navigation

Provides a visual representation of the ATC-300 Controller's display menu tree for navigation.

Appendix D: Pickup / Dropout Tables

Undervoltage Pickup / Dropout Table

Presents voltage pickup and dropout values for undervoltage conditions at different percentages.

Overvoltage Pickup / Dropout Table

Presents voltage pickup and dropout values for overvoltage conditions at different percentages.

Underfrequency Pickup / Dropout Table

Presents frequency pickup and dropout values for underfrequency conditions.

Overfrequency Pickup / Dropout Table

Presents frequency pickup and dropout values for overfrequency conditions.