Owner's manual

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Table Of Contents

Front Cover
Important User Information
Summary of Changes
- New and Updated Information
Table of Contents
Introduction
- Firmware Versions
- Manual Conventions
- Getting Assistance from Rockwell Automation
- Additional Resources
About the Drive
- Identifying the Drive by Cabinet Assembly ID Number
- LiquiFlo 2.0 Drive Component Locations
- Identifying the Power Module by Model Number
- AC Line I/O Board Description (Frame 3 Only)
- Standard I/O Board Description (Frame 3 Only)
- Combined I/O Board Description (Frame 4 Only)
- DPI Communication Ports
- Optional Equipment
Planning the Installation
- General Requirements for the Installation Site
- Wiring Requirements for the Drive
  - Determining Wire Size Requirements
  - Verifying Power Module Output Current Rating Is Greater Than Chiller Running Load Amps
- Stopping the Drive
Mounting The Power Module and Grounding the Drive
- Lifting and Mounting the Drive
- Grounding the Drive
- Lifting and Mounting the Power Module
Installing Input and Output Power Wiring
- Installing Power Wiring from the AC Input Line to the Main Input Circuit Breaker
- Installing Wiring from the Power Module Output Terminals to the Motor
Completing the Installation
- Checking the Installation
- Powering Up After Installation Is Complete
Using the Start-up Routines
- Preparing for Startup
- Running the Start-up Routines
- Exiting Before Completing the Start-Up Routines
Programming Basics
- About Parameters
- How Parameters are Organized
- Inverter Parameters View
- Rectifier Parameters View
- Accessing the Parameters
  - Viewing Rectifier or Inverter Parameters
- Selecting the Parameter Access Level
  - Inverter Parameters Basic Access Level
  - Rectifier Parameters Basic Access Level
- Security and Passwords
  - If There is More Than One OIM Connected to the Drive
Parameter Descriptions
- What the Symbols Mean
- Parameter Organization
- Inverter Parameters
- Rectifier Parameters
Troubleshooting the Drive
- Verify that the DC Bus Capacitors are Discharged Before Servicing the Drive
- Determining Drive Status Using the Status LEDs
- About Alarms
  - Alarm Descriptions
- About Faults
- Diagnostic Parameters
- Common Symptoms and Corrective Actions
- Replacement Parts
- Board Replacement, Firmware Setup Procedures
- Troubleshooting the Drive Using the OIM
- Checking the Power Modules with Input Power Off
  - Contacting Technical Support for Assistance
Technical Specifications
- Service Conditions
- Environmental Conditions
- Cooling System Specifications (Refrigerant)
- Motor Overload Protection
Using the OIM
- Installing and Removing the OIM
  - Removing the OIM While the Drive is Powered
- Display Description
  - Key Descriptions
- OIM Menu Structure
- Powering Up and Adjusting the OIM
- Selecting a Device in the System
- Using the OIM to Program the Drive
  - Viewing and Adjusting Parameters
  - Loading and Saving User Sets
- Monitoring the Drive Using the Process Display Screen on the OIM
- Displaying and Changing the OIM Reference
- Customizing the Process Display Screen
- Customizing the Function Keys
- Controlling the Drive From the OIM
  - Starting the Drive
  - Stopping the Drive
LiquiFlo 2.0 Drive Frame 3 Wiring Diagrams
- Frame 3 Wiring Diagrams
LiquiFlo 2.0 Drive Frame 4 Wiring Diagrams
- Frame 4 Wiring Diagrams
Index
Back Cover

Rockwell Automation Publication D2-3518-3 - May 2013 81

Chapter 9

Selects the output frequency below which the motor operating current is derated.

The motor thermal overload then generates a fault at lower levels of current. For

all settings of overload Hz other than zero, the overload capacity is reduced to

70% when output frequency is zero.

Sets the RMS amps threshold for motor overload fault. In order for the motor

overload fault (48) to occur, it must be enabled using inverter parameter Fault

Config 1 (238).

The drive output current is visible in inverter parameter Output Current (3).

The motor overload fault occurs under these conditions:

• If the drive output (motor) current is 138% of Motor OL Amps, the fault

occurs at 1.5 seconds.

• If the drive output (motor) current is greater than 138% of Motor OL

Amps, the fault occurs in less than 1.5 seconds.

• If the drive output (motor) current is between 102% and 138% of Motor

OL Amps, the fault occurs in greater than 1.5 seconds.

• If the drive output (motor) current is less than 102% of Motor OL Amps,

the fault does not occur.

Motor overload fault percent trip is visible in inverter parameter Motor OL

Count (220). The fault occurs when this parameter reaches 100%. This

parameter does not increase unless the drive output current is greater than 102%

of Motor OL Amps.

47 Motor OL Hertz

Range: 0.0...400.0 Hz [0.1 Hz]

Default: 0

Access: 0 Path: Motor Control > Motor Data