Kinco K5 Series User manual

Kinco K5 PLC
HARDWARE MANUAL

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User’s Manual
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Contents
CONTENTS………………………………………………………………………………………………………1
PART I GENERAL INTRODUCTION.................................................................................................................6
CHAPTER I SYSTEM OVERVIEW ....................................................................................................................7
1.1 APPLICATION SCOPE OF THE PRODUCT.............................................................................................................. 7
1.2 GENERAL DESIGNATION IN THE MANUAL......................................................................................................... 7
1.2.1 Vocabulary of Terms................................................................................................................................. 7
1.3 NAME RULES FOR THE PRODUCT....................................................................................................................... 9
1.3.1 Description of the Product Name............................................................................................................. 9
1.3.2 Description of Order Number ................................................................................................................ 12
1.4 PRODUCT LIST OF KINCO-K5.......................................................................................................................... 13
PART II HARDWARE MANUAL......................................................................................................................15
CHAPTER I APPLICATION OF KINCO-K5 SERIES MICRO PLC................................................................16
1.1 ARCHITECTURE OF KINCO-K5...................................................................................................................... 16
1.1.1 Overview................................................................................................................................................ 16
1.1.2 Allowable System Scales........................................................................................................................ 16
1.1.3 Communicating over a Network............................................................................................................. 17
1.2 POWER SUPPLY DESIGN................................................................................................................................... 18
1.2.1 DC24V Power Supply calculation.......................................................................................................... 18
1.2.2Expansion power supply calculation ...................................................................................................... 19
1.2.3Input power of the CPU.......................................................................................................................... 20
1.3 OPERATION ENVIRONMENTAL CONDITION....................................................................................................... 20
CHAPTER II CPU PRINCIPLE AND APPLICATION......................................................................................22
2.1 OVERVIEW ..................................................................................................................................................... 22
2.1.1 Front view.............................................................................................................................................. 22

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2.1.2CPU Types .............................................................................................................................................. 22
2.2FUNCTIONS ..................................................................................................................................................... 24
2.2.1OperationMode....................................................................................................................................... 24
2.2.2Communication Port............................................................................................................................... 25
2.2.3Data Keep-in and Back Up..................................................................................................................... 25
2.2.4Real-time Clock (RTC)............................................................................................................................ 26
2.2.5High-speed counter and High-speed pulse output .................................................................................. 26
2.2.6 Trigger interrupt .................................................................................................................................... 26
2.3 WIRING DIAGRAM.......................................................................................................................................... 27
2.4SPECIFICATIONS .............................................................................................................................................. 35
2.4.1CPU Specifications................................................................................................................................. 35
2.4.2 CPU DI Specifications........................................................................................................................... 36
2.4.3 CPU DO Specifications(Transistor) ...................................................................................................... 37
2.4.4 CPU Output Specifications(Relay) ........................................................................................................ 37
2.4.5 AI channel parameters on CPU............................................................................................................. 38
2.4.6 AO Channel Parameters on CPU .......................................................................................................... 38
CHAPTER III DI (DIGITAL INPUT) MODULES.............................................................................................39
3.1 DI 8*DC24V................................................................................................................................................. 39
3.1.1 Wiring Diagram..................................................................................................................................... 39
3.1.2 Technical Data....................................................................................................................................... 40
3.2 DI 16*DC24V............................................................................................................................................... 41
3.2.1 Wiring Diagram..................................................................................................................................... 41
3.2.2 Technical Data....................................................................................................................................... 42
CHAPTER IV DO (DIGITAL OUTPUT) MODULES .......................................................................................43
4.1 DO 8*DC24V ............................................................................................................................................... 43
4.1.1 Wiring Diagram..................................................................................................................................... 43
4.1.2 Technical Data....................................................................................................................................... 44
4.2 DO 8*RELAY ................................................................................................................................................. 45
4.2.1 Wiring Diagram..................................................................................................................................... 45

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4.2.2 Technical Data....................................................................................................................................... 46
4.3 DO 16*DC24V ............................................................................................................................................. 47
4.3.1 Wiring Diagram..................................................................................................................................... 47
4.3.2 Technical Data....................................................................................................................................... 48
4.4 DO 16*RELAY............................................................................................................................................... 49
4.4.1 Wiring Diagram..................................................................................................................................... 49
4.4.2Technical Data........................................................................................................................................ 50
CHAPTER V DI/O MODULES..........................................................................................................................51
5.1 DI/O, DI4*DC24V DO4*DC24V................................................................................................................. 51
5.1.1Wiring Diagram...................................................................................................................................... 51
5.1.2Technical Data........................................................................................................................................ 52
5.2 DI/O,DI 4*DC24VDO 4*RELAY .................................................................................................................. 54
5.2.1Wiring Diagram...................................................................................................................................... 54
5.2.2Technical Data........................................................................................................................................ 54
5.3 DI/O, DI 8*DC24VDO 8*DC24V................................................................................................................ 56
5.3.1Wiring Diagram...................................................................................................................................... 56
5.3.2Technical Data........................................................................................................................................ 56
5.4 DI/O, DI 8*DC24V DO 8*RELAY................................................................................................................. 58
5.4.1Wiring Diagram...................................................................................................................................... 58
5.4.2Technical Data........................................................................................................................................ 58
CHAPTER VI AI (ANALOGINPUT) MODULES.............................................................................................60
6.1 AI 4*IV, MULTI-SIGNAL INPUT ...................................................................................................................... 60
6.1.1Wiring Diagram...................................................................................................................................... 60
6.1.2Measurement Ranges and The measured value Representation.............................................................. 61
6.1.3Technical Data........................................................................................................................................ 61
6.2 AI 4*RD, RTD INPUT .................................................................................................................................... 62
6.2.1Wiring Diagram...................................................................................................................................... 62
6.2.2Measurement Ranges and The measured value Representation.............................................................. 62
6.2.3Technical Data........................................................................................................................................ 63

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6.3 AI 4*TC, THERMOCOUPLE INPUT ................................................................................................................... 64
6.3.1Wiring Diagram...................................................................................................................................... 64
6.3.2Measurement Ranges and The measured value Representation.............................................................. 65
6.3.3 Technical Data....................................................................................................................................... 65
CHAPTER VII AO (ANALOG OUTPUT) MODULES.....................................................................................66
7.1 AO 2*IV, MULTI-SIGNAL OUTPUT ................................................................................................................. 66
7.1.1Wiring Diagram...................................................................................................................................... 66
7.1.2Output Ranges and the Output Value Representation ............................................................................. 66
7.1.3Technical Data........................................................................................................................................ 67
CHAPTER VIII AI/O (ANALOG INPUT/OUTPUT) MODULES ....................................................................68
8.1 AI/O, AI 2×IVAO 2×IV, MULTI-SIGNAL OUTPUT........................................................................................ 68
8.1.1Wiring Diagram...................................................................................................................................... 69
8.1.2Measurement Ranges and The measured value Representation.............................................................. 69
8.1.3 Output Ranges and the Output Value Representation ............................................................................ 69
8.1.4Technical Data........................................................................................................................................ 70
CHAPTER IX EXPANSION FUNCTION MODULES......................................................................................71
9.1 K541, CAN BUS MODULE.............................................................................................................................. 71
9.1.1 Main Features........................................................................................................................................ 71
9.1.2Terminals and Status LEDs..................................................................................................................... 72
9.1.3Wiring and Arranging............................................................................................................................. 73
9.1.4Technical data......................................................................................................................................... 74
9.2 EXPANSION POWER MODULE ......................................................................................................................... 75
9.2.1 Main Specifications................................................................................................................................ 75
9.2.2 PS580 used in the actual application..................................................................................................... 76
9.2.3 CPU selection and PS580 Calculation .................................................................................................. 76
9.2.4 Technical Data....................................................................................................................................... 78
CHAPTER X INSTALLATION&WIRING GUIDELINES................................................................................79
10.1 PLASTIC CASE DIMENSION ........................................................................................................................... 79

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10.2 INSTALLATION GUIDELINES .......................................................................................................................... 80
10.2.1 Module Connection.............................................................................................................................. 80
10.2.2 Installing the KINCO-K5 modules....................................................................................................... 81
10.3 INSTALLATION AND REMOVING THE WIRING TERMINAL ROW........................................................................... 83
10.3.1 Remove wiring terminal row................................................................................................................ 83
10.3.2 Install the terminal row........................................................................................................................ 83
10.4 PROTECTION CIRCUIT AND GROUND CONNECTION.......................................................................................... 84
10.4.1 Protection function of transistor digital Output................................................................................... 84
10.4.2 Protection function of Relay output...................................................................................................... 84
10.4.3 Grounding......................................................................................................................................... 85

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Part I
General Introduction

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Chapter I System Overview
This chapter will briefly introduce the Kinco-K5 series micro PLC (Programmable Logic Controller) and
focuses on the explanation of the terms related to Kinco-K5 with a purpose of facilitating you to understand the
contents in the following part of this manual. The main content of this chapter covers: application scope of the
product, explanations on relevant terms, rules for nomenclature, etc.
1.1 Application Scope of the Product
According to the accepted classification rules for PLC, Kinco-K5 series PLC falls into the range of micro PLC.
Therefore, it can be used to control machines and small-scale process. Kinco-K5 series PLC can well satisfy the
demands in the following application areas (including but not limited to these applications):
Packing machinery textile machinery building material machinery
Food machinery plastic machinery numerical control machine
Printing mechanism central air conditioner
Environmental Machinery individual process control device
1.2 General Designation in the Manual
1.2.1 Vocabulary of Terms
▪Micro PLC (Programmable Logic Controller)
According to the general classification rules, micro PLC generally refers to the type of PLC with the IO number
less than 128. This type of PLC usually adopts compact structure, that is, a certain number of I/O channels,
output power supply; high-speed output/input and other accessories are integrated on the CPU module.
▪CPU body
Namely, the CPU module, it‟s the core of the control system. The user program is stored in the internal storage of
the CPU module after being downloaded through the programming software, and will be executed by the CPU.
Meanwhile, it also executes the CPU self diagnostics: check each modules‟ operation status and operation error of
user program
▪Expansion module & expansion bus

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The expansion module is used to extend the functions of the CPU body and it contains expansion I/O module
(to extend the input/output channels of the system) and expansion functional module (to expend the functions of
CPU).
The expansion bus connects the CPU and expansion modules, and the 16-core flat cable is adopted as the
physical media. The data bus, address bus and the expansion module‟s working power supply are integrated into
the expansion bus cable.
▪KincoBuilder
The programming software for Kinco-K5 series PLC, accords with IEC61131-3 standard. KincoBuilder presently
provides LD and IL languages for convenience and efficiency in developing the control programs for your
applications. KincoBuilder provides a user-friendly environment to develop and debug the programs .
▪CPU firmware
It is the “operating system” of the CPU module and it is stored in the Flash memory. When powered on, it starts
to manage and arrange all the tasks of the CPU module.
▪User program
It‟s also called user project or application program, the program written by the user to execute some specific
control functions. After the user program is downloaded to the CPU module, it is stored in the FRAM. When
powered on, the CPU module shall read it from FRAM into RAM to execute it.
▪Main program and scanning cycle
The CPU module executes a series of tasks continuously and cyclically, and we call this cyclical execution of
tasks as scanning.
The main program is the entry of application program. In the CPU, the main program is executed once per
scanning cycle and there is only one main program in application program, user can call multiple sub-routines in
from main program.
▪Free-protocol communication
The CPU body provides serial communication ports that support the special programming protocol Modbus RTU

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protocol (as a slave) and free protocols. Free-protocol communication mode allows your program to fully control
the communication ports of the CPU. You can use free-protocol communication mode to implement user-defined
communication protocols to communicate with all kinds of intelligent devices. ASCII and binary protocols are
both supported.
▪I/O Mapping Area
The memory area of physical I/O terminals, which is including input mapping area and output mapping area. In
order to ensure data consistency in one scanning cycle and to improve the program execution speed, CPU will
read the status of physical inputs to input mapping area at the beginning of a scanning cycle and send the output
mapping area data to physical output channels at the ending of scanning cycle. The IO address in this manual,
like I0.0, Q1.0, AIW0, AQW0 and so on , they are all I/O mapping area address.
▪Retentive Area Range and Data backup
In “Hardware” configuration of KincoBuilder, you can define four retentive ranges to select the areas of the
RAM which you want to retain on power loss. In the event that the CPU loses power, the instantaneous data in
the RAM will be maintained by the lithium cell, and the data in retentive ranges will be retentive at next power
on. The retaining duration is 3 years at normal temperature.
Data backup is hat PLC has a particular memory area in FRAM. The data in this area will be permanent storage
automatically. Note: Every type of permanent memory has its own expected life, for example, E2PROM allows
100 thousand of times of writing and FRAM provides unlimited read/write endurance.
1.3 Name Rules for the product
1.3.1 Description of the Product Name
The “product name” of Kinco-K5 PLC is used to indicate the main functions and applications of the product.
The “product name” is not for any individual product but the general name for a type of products. The “product
name” is defined according to the following principle:
Product name: module type + 5 + subtype + serial number + function identification
Module type is indicated by the following English letters
CPU CPU module
PM expansion I/O module

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SM expansion function module
PS power supply module
SW Software
AS Accessory
▪5 means Kinco-K5 series micro PLC
▪Subtype: use a number (0~9) to indicate the subtype of the module.
0 CPU modules
1 Reserved
2 Digital Input/output module
3 Analog Input/output module
4 Communication module
5 Specific function module
6 Software
7 Accessory
8 Power Module
9 Reserved
▪Serial number:: use a number (0~9) to indicate the sequence number of a subtype. The serial numbers of
subtypes have the following meanings.
▪CPU module
4 CPU which provides 14 I/O channels on the CPU body;
6 CPU which provides 24 I/O channels on the CPU body;
8 CPU which provides 40 I/O channels on the CPU body;
Other serial numbers are reserved.
▪Digital Input/Output module
1 DI (digital input) module;
2 DO (digital output) module;

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3 DI / DO mixed module;
Other serial numbers are reserved.
▪Analog Input/Output module
1 AI (analog input) module;
2 AO (analog output) module;
3 AI/AO mixed module;
Other serial numbers are reserved.
▪Communication Module
0 RS485 communication module;
1 CAN Protocol Interface module;
Other serial numbers are reserved.
▪Special Function Module
These numbers are reserved.
▪Software
0 Programming software;
Other serial numbers are reserved.
▪Accessories
0 Programming cable;
Other serial numbers are reserved.
▪Power Module
0Expansion power supply module;
Other serial numbers are reserved.
▪Function Identifier (optional)
EC Communication Enhanced CPU Module;
EA Analog Enhanced CPU Module;
EM Motion Control Enhanced CPU Module;
EX Other functions Enhanced CPU Module.
According to the above principles, CPU506 indicates a CPU module with 24 I/O channels; PM521 indicates DI
expansion module; AS360 stands for KincoBuilder programming software, etc.

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1.3.2 Description of Order Number
The difference from “product name” is that each product has a unique “order No.”, users just need to inform us
the order number of the demanded product when making an order. The “order number” is in accordance with
the following rules:
Order Number :Kinco-K + module code + feature code
Diagram 1-2 Description of the Order Number
According to the above principle,KINCO-K506-24DT stands for the CPU module with 24 I/O channels (the
output channel is of transistor type) and DC24V power supply; KINCO-K521-08DXstands for the DI expansion
module with 8 transistor-type input channels.
Kinco
-
K
-
Number
Same with the
product name
Fixed prefix
The 1st digit indicates:
Power supply voltage
D: DC 24V
A: AC 85-265V
CPU and PM must have this option,
But other module may omit it.
CPU and
Digital module
Analog module
Number of
I/O channels
Optional:
Sub-item of function identifier,
Represented with the letters X,Y,Z
or numbers 0~9
Function identifier
CPU extended function Identifier (optional)
EC Communication Enhanced CPU Module;
EA Analog Enhanced CPU Module;
EM Motion Control Enhanced CPU Module;
EX Other Enhanced CPU Module.
Other serial numbers are reserved
The 2nddigit indicates:
Type of the output channel
T: Transistor
R: Relay
Fill in X where not
applicable
IV: current/voltage
TC: thermal couple
RD: RTD
NT: NTC thermistor

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1.4 Product list of Kinco-K5
Type
Name
Order no.
Description
CPU module
CPU504
Kinco-K504-14AT
AC85~265V power supply, with 14 I/O, DI 8*DC24V, DO
6*DC24V,1*RS232, non-reconnected extension module
Kinco-K504-14AR
AC85~265V power supply, with 14 I/O, DI 8*DC24V, DO
6*Relay, 1*RS232, non-reconnected extension module
Kinco-K504-14DT
DC21.6~28.8V power supply, with 14 I/O, DI 8*DC24V, DO 6*
DC24V, 1*RS232, non-reconnected extension module
Kinco-K504-14DR
DC21.6~28.8Vpower supply,with 14 I/O,DI 8*DC24V,DO
6*Relay, 1*RS232, non-reconnected extension module
CPU504EX
Kinco-K504EX-14AT
AC85~265V power supply, with 14 I/O, DI 8*DC24V, DO
6*DC24V, 1*RS232,1*RS485
Kinco-K504EX-14AR
AC85~265V power supply, with 14 I/O, DI 8*DC24V, DO
6*Relay, 1*RS232, 1*RS485
Kinco-K504EX-14DT
DC21.6~28.8V power supply, with 14 I/O, DI 8*DC24V, DO 6*
DC24V, 1*RS232, 1*RS485
Kinco-K504EX-14DR
DC21.6~28.8V power supply, with 14 I/O, DI 8*DC24V, DO
6*Relay, 1*RS232, 1*RS485
CPU506
Kinco-K506-24DT
DC24V power supply, with 24 I/O, DI 14*DC24V, DO
10*DC24V, 1*RS232, 2*RS485
Kinco-K506-24DR
DC24V power supply, with 24 channels, DI 14*DC24V, DO
10*Relay, 1*RS232, 2*RS485
Kinco-K506-24AR
AC85~265V power supply, with 24 I/O, DI 14*DC24V, DO
10*24V, 1*RS232, 2*RS485
Kinco-K506-24AT
AC85~265V power supply, with 24 I/O, DI 14*DC24V, DO
10*Relay, 1*RS232, 2*RS485
CPU506EA
Kinco-K506EA-30AT
AC85~265V power supply, with 30 I/O, DI 14*DC24V, DO
10*24V, AI 4*IV, AO 2*IV, 1*RS232, 2*RS485
Kinco-K506EA-30DT
DC21.6~28.8V power supply, with 30 I/O, DI 14*DC24V, DO
10*24V, AI 4*IV, AO 2*IV, 1*RS232, 2*RS485
CPU508
Kinco-K508-40AT
AC85~265V power supply, with 40 I/O, DI 24*DC24V, DO
16*DC24V, max output current per channel 0.75A
Kinco-K508-40AR
AC85~265V power supply, with 40 I/O, DI 24*DC24V, DO
16*Relay, max output current per channel 3A
Kinco-K508-40AX
AC85~265V power supply, with 40 I/O, DI 24*DC24V, DO
4*DC24V/12*Relay, max output current per channel 0.75A/3A

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Kinco-K508-40DT
DC21.6~28.8V power supply, with 40 I/O, DI 24*DC24V, DO
16*24V, 1*RS232, 2*RS485
Kinco-K508-40DR
DC21.6~28.8V power supply, with 40 I/O, DI 24*DC24V, DO
16*Relay, 1*RS232, 2*RS485
Expansion I/O
module
PM521
Kinco-K521-08DX
DI 8*DC24V
Kinco-K521-16DX
DI 16*DC24V
PM522
Kinco-K522-08DT
DO 8*DC24V
Kinco-K522-16DT
DO 16*DC24V
Kinco-K522-08XR
DO 8*Relay
Kinco-K522-16XR
DO 16*Relay
PM523
Kinco-K523-08DT
DI 4*DC24V, DO 4*DC24V,
Kinco-K523-08DR
DI 4*DC24V, DO 4*Relay
Kinco-K523-16DT
DI 8*DC24V, DO 8*DC24V
Kinco-K523-16DR
DI 8*DC24V, DO 8*Relay
PM531
Kinco-K531-04IV
4analog input channels,
0-20mA/4-20mA/±10V/1-5V optional for each channel
Kinco-K531-04TC
4Thermocouple input channels,
Type J/K/E/S optional for each channel
Kinco-K531-04RD
4RTD input channels,
Pt100/Pt1000/Cu50/R, 2/3 wire optional for each channel
PM532
Kinco-K532-02IV
2 analog output channels,
0-20mA/4-20mA/0-10V/1-5V optional for each channel
PM533
Kinco-K533-04IV
2analog input channels, 2 analog output channel,
4-20mA/1-5V/0-10V optional for each channel
Expansion
functions
module
SM541
Kinco-K541
CAN communication expansion module, supports CANopen
master and CAN free protocol.
Expansion
Power supply
module
PM580
Kinco-K580
Power supply for expansionmodules.
Rated supply voltage AC85~265V, Max. output current: DC5V
1Aand DC24V 250mA.
Table 1-1 Product list
Note: the relay output type of CPU module (the last number is “R”, for example K506-24AR), which doesn‟t
support high-speed pulse output function!

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Part II
Hardware Manual

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Chapter I Application of Kinco-K5 Series Micro PLC
This chapter will briefly describe the architecture, expansion connection, network interface, etc and the
introduction will help to you understand the basics of KINCO-K5 series PLC to use them correctly.
1.1 Architecture of KINCO-K5
1.1.1 Overview
The Kinco-K5 is a kind of high-performance micro PLC (Programmable Logic Controller), and it provides a
wide variety of CPU modules and expansion modules. The compact design, flexible configuration and powerful
instruction set make Kinco-K5 a perfect solution for a wide variety of applications.
CPU module is the core of Kinco-K5, and it can monitor input channels and change output channels as controlled
by the user program, which can include Boolean logic, counting, timing, complex math operations, and
communications with other devices. 24VDC sensor supply, communication ports and a certain number of I/O
channels are integrated on the CPU body.
Expansion module can add additional functionality to the CPU.The CPU module controls the operation modes of
connected expansion modules and exchanges data through the expansion bus with them. Kinco-K5 provides all
kinds of expansion modules for you, such as DI, DO, DI/DO, AI, AO, AI/AO, RTD, TC modules, etc.
KincoBuilder is the programming software for Kinco-K5. KincoBuilder accords with IEC61131-3 standard, and
presently provides LD and IL languages. KincoBuilder provides you with a variety of useful functions such as
programming, hardware configuration, reading diagnostic message, monitoring and forcing output, etc.
1.1.2 Allowable System Scales
The max numbers of expansion modules and IO that supported by each CPU are listed in the following table.
Besides, the number of relay-output is restricted because of the limited power supply of the expansion bus.
Notie: All the data in the table refer to the maximum limitations, and each restrictive condition must be
satisfied simultaneously!

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DI
DO
AI
AO
Max. number of
expansion modules
CPU504
8
6
-
-
-
CPU504EX
8
6
-
-
4
CPU506
14
10
-
-
10
CPU506EA
14
10
4
2
10
CPU508
24
16
-
-
10
Table 1-1 Allowable system scales
1.1.3 Communicating over a Network
Kinco-K5 provides serial communication (RS232 and RS485) and CAN bus to conveniently communicate with
other equipments and systems. Kinco-K5 can not only meet the requirement of monitoring single equipment but
also build up a complex network to satisfy all kinds of demands.
Figure 1-1 Communication Network
▪Serial communication
The CPU module provides one RS232 port and one or two RS485 ports, these ports support the standard

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Modbus RTU protocol and free-protocol mode. User can connect 32 (max) devices through RS485 port.
In default, all ports support Modbus RTU slave. RS485 ports supports Modbus RTU master functions too.
▪CAN bus
K541 is a CAN bus expansion module, and it supports CANOpen mater and CAN free-protocol mode.
When working as a CANOpen master, K541 supports CAN2.0A, and accords with DS301 V4.2.0.
When working as a CAN free-protocol device, K541 supports CAN2.0A and CAN2.0B, and Kinco-K5 provides
various CAN communication instructions for your application.
1.2 Power supply design
The Kinco-K5 CPU has an internal integrated power supply that provides power for the CPU itself, for all
connected expansion modules and for other DC24V (VO+, VO-) power requirements.
The integrated power supply of the CPU module, supplies both DC5V power and DC24V power to the connected
expansion modules, therefore, the DC5V power supply serves the internal circuit of each expansion module as
working power supply, and the DC24V power supply is specially designed as the drive supply (DC24V) for the
relay coil in the relay-type DO modules.
K5 CPU also have DC24V (VO+, VO-) power supply output for its own outputs or other devices. The terminal
labels are VO+ and VO-.
1.2.1 DC24V Power Supply calculation
The DC24V power supply can supply DC24V for input channels or other requirements. If the power requirement
exceeds the capacity of the sensor supply, you can add an external DC24V power supply. Note: Do not connect
an external DC24V power supply in parallel with the CPU DC24V Power Supply because this can result in
a conflict between the two power supplies.
The capacity of the DC24V sensor supply is shown in the following table.
CPU504/CPU504EX
300 mA
CPU506/CPU506EA/CPU508
AC：500mA; DC：300 mA
Table 1-2 Capacity of the 24VDC power supply on CPU

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Diagram 1-1 Wiring of the DC24V Sensor Supply
1.2.2Expansion power supply calculation
The expansion supply provides both DC5V power and DC24V power for the connected expansion modules
through expansion bus. In a PLC system, the power requirements for all the expansion modules must not exceed
the capacity of the CPU‟s expansion power supply, otherwise you have to add a PS580 module to provide extra
expansion power supply, or select a CPU with higher capacity of the expansion power supply.
The following tables list the expansion supply capacity of each CPU and the power requirements of each
expansion module.
DC5V
DC24V
CPU504EX
600mA
300mA
CPU506、CPU506EA、CPU508
1500mA
360mA
PS580
1000mA
250mA
Table 1-3 Capacity of expansion power supply
Typical requirements of
external DC24V supply
(L+ and L-)
Max. requirement of expansion supply
DC5V
DC24V
K521-08DX
-
180mA
-
K521-16DX
-
210mA
-
K522-08DT
-
200mA
-
K522-08XR
-
180mA
60mA
K522-16DT
-
240mA
-
K522-16XR
-
210mA
120mA
K523-08DT
-
200mA
-
K523-08DR
-
180mA
30mA
K523-16DT
-
240mA
-
KDN-K306-24DR
VO+VO-1.51.41.31.2