Delta VFD007B23A - User Manual

Preface
Thank you for choosing DELTA’s high-performance VFD-B Series. The VFD-B Series is manufactured with
high-quality components and materials and incorporate the latest microprocessor technology available.
This manual is to be used for the installation, parameter setting, troubleshooting, and daily maintenance of the
AC motor drive. To guarantee safe operation of the equipment, read the following safety guidelines before
connecting power to the AC motor drive. Keep this operating manual at hand and distribute to all users for
reference.
To ensure the safety of operators and equipment, only qualified personnel familiar with AC motor drive are to
do installation, start-up and maintenance. Always read this manual thoroughly before using VFD-B series AC
Motor Drive, especially the WARNING, DANGER and CAUTION notes. Failure to comply may result in
personal injury and equipment damage. If you have any questions, please contact your dealer.
PLEASE READ PRIOR TO INSTALLATION FOR SAFETY.
DANGER!
1. AC input power must be disconnected before any wiring to the AC motor drive is made.
2. A charge may still remain in the DC-link capacitors with hazardous voltages, even if the power has been
turned off. To prevent personal injury, please ensure that power has turned off before opening the AC
motor drive and wait ten minutes for the capacitors to discharge to safe voltage levels.
3. Never reassemble internal components or wiring.
4. The AC motor drive may be destroyed beyond repair if incorrect cables are connected to the input/output
terminals. Never connect the AC motor drive output terminals U/T1, V/T2, and W/T3 directly to the AC
mains circuit power supply.
5. Ground the VFD-B using the ground terminal. The grounding method must comply with the laws of the
country where the AC motor drive is to be installed. Refer to the Basic Wiring Diagram.
6. VFD-B series is used only to control variable speed of 3-phase induction motors, NOT for 1-phase motors
or other purpose.
7. VFD-B series shall NOT be used for life support equipment or any life safety situation.

Delta VFD007B23A Specifications

General

Brand	Delta
Model	VFD007B23A
Category	Controller
Language	English

Summary

Chapter 2 Installation and Wiring

2.1 Ambient Conditions

Specifies the environmental conditions required for operating and storing the AC motor drive.

2.2 Installation

Chapter 3 Start Up

3.1 Preparations before Start-up

Lists critical checks to perform before applying power to the AC motor drive.

3.3 Trial Run

Guides through the initial testing procedure to ensure correct motor operation.

Chapter 5 Parameters

5.1 Summary of Parameter Settings

Provides an overview of all parameter groups and their functions for easy setup.

5.2 Parameter Settings for Applications

5.3 Description of Parameter Settings

Explains individual parameters, their settings, factory defaults, and usage.

Chapter 6 Fault Code Information

6.1 Common Problems and Solutions

Lists common fault names, descriptions, and their corresponding corrective actions.

6.2 Reset

Chapter 7 Troubleshooting

7.1 Over Current (OC)

Provides a flowchart to diagnose and resolve over-current faults.

7.2 Ground Fault

Offers troubleshooting steps for ground fault issues.

7.3 Over Voltage (OV)

Provides a flowchart to diagnose and resolve over-voltage faults.

7.4 Low Voltage (Lv)

Details troubleshooting steps for low voltage faults.

7.5 Over Heat (OH)

Provides a flowchart to diagnose and resolve overheating issues.

7.6 Overload

7.7 Display of PU01 is Abnormal

7.8 Phase Loss (PHL)

7.9 Motor cannot Run

Offers a detailed flowchart to diagnose why the motor is not running.

7.10 Motor Speed cannot be Changed

Provides a flowchart to troubleshoot issues with motor speed control.

7.11 Motor Stalls during Acceleration

Offers troubleshooting steps for motor stalling issues during acceleration.

7.12 The Motor does not Run as Expected

Chapter 8 Maintenance and Inspections

Daily Inspection

Periodic Inspection

Appendix C How to Select the Right AC Motor Drive

C.1 Capacity Formulas

C.3 How to Choose a Suitable Motor