Delta VFD007EL43W User Manual

Chapter 4 Parameters  VFD-EL-W
4-79
（8 , O , 2）
Start
bit
0
1
2
3
4
5
6
Stop
bit
8-data bits
12-bits character frame
Stop
bit
7
Odd
parity
 Communication Protocol
1. Communication Data Frame
ASCII mode:
STX Start character ‘:’ (3AH)
Address Hi Communication address:
8-bit address consists of two ASCII codes.
Address Lo
Function Hi Command code:
8-bit command consists of two ASCII codes.
Function Lo
DATA (n-1) to DATA 0
Contents of data:
Nx8-bit data consists of 2n ASCII codes.
n ≤ 20, maximum of 40 ASCII codes.
LRC CHK Hi LRC checksum:
8-bit checksum consists of two ASCII codes.
LRC CHK Lo
END Hi End characters:
END1 = CR (0DH), END0 = LF (0AH)
END Lo
RTU mode:
START A silent interval of more than 10 ms
Address Communication address: 8-bit address
Function Command code: 8-bit command
DATA (n-1)
to
DATA 0
Contents of data:
n×8-bit data, n ≤ 40 (20 x 16-bit data).
CRC CHK Low
CRC checksum:
16-bit checksum consists of two 8-bit characters.
CRC CHK High
END A silent interval of more than 10 ms
2. Address (Communication Address)
Valid communication addresses are between 0–254. A communication address of 0 means broadcast to all
AC motor drives (AMD). In this case, the AMD broadcast does not reply with any message to the master
device.
00H: broadcast to all AC motor drives
01H: AC motor drive with address 01
0FH: AC motor drive with address 15
10H: AC motor drive with address 16
:
FEH: AC motor drive with address 254
For example, send communication to AMD with address 16 decimal (10H):
ASCII mode: Address = ’1’,’0’ => ‘1’ = 31H, ‘0’ = 30H
RTU mode: Address = 10H

Delta VFD007EL43W Specifications

General

Rated Output Current	7A
Phase	3-phase
Control Method	V/F Control, Sensorless Vector Control
Series	Delta VFD-E Series
Output Voltage	0 - Input Voltage
Frequency Range	0 - 400 Hz
Protection Features	Overvoltage, Undervoltage, Overcurrent
Cooling Method	Fan cooling

Summary

Preface

Safety Guidelines Before Operation

Read safety guidelines before connecting power to the AC motor drive.

Chapter 1 Introduction

Preparation for Installation and Wiring

Install the AC motor drive in an environment with specific conditions.

Chapter 2 Installation and Wiring

Wiring Overview and Precautions

Details wiring precautions and diagrams for main and control circuits.

External Wiring Components

Main Circuit Connections

Describes how to connect the main power terminals and output terminals.

Control Terminals Functionality

Explains the function of each control terminal for input and output signals.

NPN and PNP Mode Configuration

Chapter 3 Keypad and Start-up

Digital Keypad Operation and Display

Describes the functions of the digital keypad buttons and displays.

Operation Method Selection

Trial Run Procedure

Guides through the initial test run to verify motor operation and direction.

Chapter 4 Parameters

Parameter Settings for Applications

Description of Parameter Settings

Chapter 5 Troubleshooting

Over-Current Faults (oc)

Explains causes and corrective actions for over-current conditions.

Over-Voltage Faults (ov)

Low Voltage Faults (Lv)

Overheat Faults (oH1)

Overload Faults (oL)

Motor Not Running or Performing Incorrectly

Guides through diagnosing why the motor doesn't run or perform as expected.

Motor Speed Control Issues

Chapter 6 Fault Code Information and Maintenance

Fault Code Explanations and Corrective Actions

Lists fault codes, descriptions, and corrective actions for drive errors.

Maintenance and Inspection Schedule

Provides a schedule and methods for regular inspection and maintenance.

Appendix C How to Select the Right AC Motor Drive

Capacity Calculation Formulas

General Precautions for AC Drive Selection