K&R ACD320 Series User Manual

ACD320 user manual Appendix
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independently conducts (XOR) with the preset value; if LSB is 0,the operation will not be
conducted.The entire process will be repeated eight times.After the completion of the last bit (the
eight bit), the next 8-bit byte will independently conduct (XOR) with the current value of the
register. The final value in the register is the CRC value after the execution of all bytes in the
frame.
The calculation method of CRC is the CRC principle in international standard.When
editing CRC algorithm, the user can refer to the CRC algorithm in related standard, to write a
CRC calculation program that really meets requirement.
Asimple function for CRC calculation is provided for reference (programmed in C
language):
unsigned int crc_cal_value
（
unsigned char*data_value
，
unsigned char data_length
）
{
int i
；
unsigned int crc_value=0xffff
；
while
（
data_length--
）
{
crc_value^=*data_value++
；
for
（
i=0
；
i<8
；
i++
）
{
if
（
crc_value&0x0001
）
crc_value=
（
crc_value>>1
）
^0xa001;
else crc_value=crc_value>>1
；
}
}
return
（
crc_value
）
;
}
In ladder logic, CKSM calculates the CRCvalue accordingto the frame content in tale loop-up
method. This method features simple program, fast operation speed, but wider ROM space of
program. Please use this method prudently in occasions with certain program space requirement.
6.3.3 ASCII Mode Chesk(LRC Check
LRC Check Code is grouped of the value fromAddress to Data Content,lookup 6.2 check
code of communication message above:
0x02+0x06+0x00+0x08+0x13+0x88=0xAB, then get the two bytes =0x55 behind the radix
complement of 2.
6.4 Definition of Communication DataAddress

K&R ACD320 Series Specifications

General

Brand	K&R
Model	ACD320 Series
Category	Inverter
Language	English

Summary

Preface

Chapter 1 Safety Information and Use Notice Points

1.1 Safety Precautions

Details critical safety warnings and precautions for inverter operation and wiring.

1.2 Use Range

Specifies the intended applications and limitations for the inverter.

1.3 Use Notice Points

Provides essential operational notes and considerations for using the inverter.

1.4 Scrap Notice Points

Outlines guidelines for safely disposing of scrap inverter components.

Chapter 2 Type and Specification of the Inverter

2.1 Incoming Inverter Inspection

Instructions for checking the inverter upon delivery for damage or missing parts.

2.2 Type Explanation

Explains how to interpret the inverter's model number and specifications.

2.3 Nameplate Explanation

Details how to read and understand the information on the inverter's nameplate.

2.4 Series Type Explanation

Provides a comprehensive table of inverter models, ratings, and specifications.

2.5 Appearance and Parts Name Explanation

Identifies and labels the different physical components and terminals of the inverter.

2.6 Out Size

Presents dimensional drawings and specifications for inverter installation.

2.7 Product Technic Index and Specification

Lists detailed technical specifications, performance indexes, and features of the inverter.

Chapter 3 Installation and Wiring

3.1 Installation Ambient

Specifies environmental conditions and requirements for safe and effective inverter installation.

3.2 Electrical Installation

Covers applicable devices, wiring recommendations, and main circuit connections.

3.3 Basic Wiring Diagram

Illustrates standard circuit diagrams for connecting the inverter below and above specific power ratings.

3.4 Main Circuit Terminals and Wiring

Details the main circuit terminals, their functions, and essential wiring notes and dangers.

3.5 Control Terminals and Wiring

Explains the layout and function of control terminals for various inverter models.

3.6 EMC Issues

Discusses harmonic influence, EMI, and leakage current to ensure electromagnetic compatibility.

Chapter 4 Digital Keypad Operation

4.1 Description of the Digital Keypad

Introduces the digital keypad, its parts, and functions for programming and parameter viewing.

4.2 Modify and Check the Function Codes

Guides users on navigating the 3-level menu to set and modify inverter function codes.

4.3 How to View Status Parameters

Explains how to display and cycle through various status parameters using the keypad.

4.4 Password Setting

Details how to set up and manage password protection for the inverter.

4.5 Auto Tuning of Motor Parameters

Outlines the procedure for the inverter's motor auto-tuning function for optimal performance.

Chapter 5 Function Parameters List

5.1 Symbol Description

Explains the symbols used in the function parameter schedule graph.

5.2 Function Parameter Schedule Graph

A comprehensive table listing function codes, names, set ranges, and default values.

Chapter 6 Parameter Description

6.1 F0 Basic Function Parameters

Explains fundamental function parameters like control mode, command source, and frequency settings.

6.2 F1 Motor Parameters

Details parameters related to motor specifications and self-learning for optimal control.

6.3 F2 Input and Output Terminal Function Parameters

Describes how to configure the functions of the inverter's input and output terminals.

6.4 F3 Human Machine Interface Parameters

Covers parameters related to user password, macro instructions, and keypad functions.

6.5 F5 Protection Parameters

Lists parameters for various protection functions like overload, over-voltage, and over-current.

6.6 F6 Communication Parameters

Explains parameters for setting up serial communication, including address and baud rate.

6.7 F7 Senior Function Parameters

Details advanced parameters for specific applications like water supply modes.

6.8 F8 Supplementary Function Parameters 1

Covers supplementary parameters for oscillation inhibition and PWM selection.

6.9 F9 Supplementary Function Parameters 2

Details supplementary parameters for input/output terminal polarity and carrier wave selection.

Chapter 7 Fault Diagnosis and Countermeasures

7.1 Failure and Countermeasure

Provides a table of common failure codes, their possible reasons, and corresponding countermeasures.

7.2 Fault and Countermeasures

Presents flowcharts for diagnosing and resolving specific inverter faults and issues.

7.3 Failure Record Lookup

Explains how to access and interpret the inverter's stored failure records.

7.4 Failure Reset

Details methods for resetting the inverter after a fault condition has been resolved.

Chapter 8 Maintenance

8.1 Routine Maintenance

Outlines regular inspection items and criteria for maintaining the inverter.

8.2 Inspection and Replacement of Damageable Parts

Guides on inspecting and replacing components prone to wear or performance degradation.

8.3 Repair Guarantee

Explains the terms and conditions of the product's warranty and repair service.

8.4 Storage

Provides instructions for proper temporary and long-term storage of the inverter.

Chapter 9 Appendix

Appendix 1 ACD320 Series Serial Communication Protocol

Details the ModBus communication protocol, frame structure, and data formats used by the inverter.

Appendix 2 All Braking Resistors & Braking Units Use in AC Drives

Lists recommended braking resistors and units for various motor power ratings.

Appendix 3 Parameter Illustration for One Driving One Constant Pressure Water Supply

Illustrates parameter settings for a specific constant pressure water supply application.

Appendix 4 Example for One Driving Two Constant Pressure Water Supply System

Provides an example setup for a dual-pump water supply system using the inverter.

Warranty Agreement