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LG GLOFA G3F - RD3A User Manual

Programmable logic controller
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User 's Manual
LG Programmable Logic Controller
GLOFA
G3F – RD3A
G4F – RD2A
L G Industrial Systems

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  Summary of Contents for LG GLOFA G3F - RD3A

  • Page 1 User ’s Manual LG Programmable Logic Controller GLOFA G3F – RD3A G4F – RD2A L G Industrial Systems...
  • Page 2: Table Of Contents

    ◎ CONTENTS ◎ Chapter 1. INTRODUCTION Features … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … 1 – 1 Glossary …...
  • Page 3 Chapter 4. FUNCTION BLOCKS Inserting Function Blocks for RTD Input Module in GMWIN … … … … … … … … … … … … … 4 – 1 Local Function Blocks … … … … … … … … … … … … … … … … … … … … … … … … … … … 4 – 2 4.2.1 Module Initialization (G3F-RD3A: RTD3INI , G4F-RD2A:RTD2INI) ……………………………...
  • Page 4 6.2.4 Digital Conversion Value ……………………………………………………………… 6 – 4 (G3F-RD3A : Addresses 10, 13, 16, 19, 22, 25, 28 and 31, G4F-RD2A : Addresses 6, 9, 12 and 15) 6.2.5 Error Code …………………………………………………………………………… 6 – 4 (G3F-RD3A : Addresses 11, 14, 17, 20, 23, 26, 29 and 32, G4F-RD2A : Addresses 7, 10, 13 and 16) 6.2.6 Specifying SET Data ……………………………………………………………………...
  • Page 5 9.2.4 Input Value of the RTD Is Not Consistent with The Detected Temperature Value ……………………………………………………… 9 – 4 9.2.5 RTD Input Module Hardware Defect …………………………………………………… 9 – 4 Chapter 10. DIMENSIONS 10.1 G3F-RD3A Dimensions … … … … … … … … … … … … … … … … … … … … … … … … … … 10 – 1 10.2 G4F-RD2A Dimensions …...
  • Page 6: Chapter 1. Introduction

    Chapter 1. INTRODUCTION Chapter 1. INTRODUCTION These two units are called G3F-RD3A and G4F-RD2A. The G3F-RD3A is an Pt input module used with the CPU of GLOFA GM1/2/3 series and MASTER-K1000S series, and the G4F-RD2A is used with the CPU of GM4 series and K 300S series Hereafter, the two units are called the RTD input module The RTD input module is a module that converts the temperature data( °C) input by the Pt (Pt100 or JPt100) into a signed 16 bit digital binary data and outputs it.
  • Page 7: Glossary

    Chapter 1. INTRODUCTION 1.2 Glossary 1.2.1 A - Analog Value time time [Fig 1.2] Digital Value [Fig 1.1] Analog Value The continuous changeable value such as voltage, current, temperature, velocity, pressure and flow is called analog value. For example, temperature changes continuously with time as shown in Fig. 1.1. The PLC can process that continuous changeable temperature by use of the RTD input module.
  • Page 8: Chapter 2. Specifications

    Chapter 2. SPECIFICATIONS Chapter 2. SPECIFICATIONS 2.1 General Specifications Table 2.1 shows general specifications of the GLOFA GM series and MASTER -K series Reference Item Specifications specification Operating 0 ~ 55 °C ambient temperature Storage ambient -25 ~ +75 °C temperature Operating 5 ~ 95%RH, non-condensing.
  • Page 9: Performance Specifications

    Chapter 2. SPECIFICATIONS 2.2 Performance Specifications Table 2.2 shows performance specifications of the RTD input module. Specifications Item G3F-RD3A G4F-RD2A Pt 100 (JIS C1640-1989, DIN 43760-1980) Connectable RTD JPt100 (KS C1603-1991, JIS C1604-1981) Pt100 -200.0°C to 600°C (18.48 to 313.59 Ω) Temperature input range JPt100 -200.0°C to 600°C (17.14 to 317.28 Ω)
  • Page 10: Names Of Parts And Functions

    Chapter 2. SPECIFICATIONS 2.3 Names of Parts and Functions The following gives names of parts. 2.3.1 G3F-RD3A The following gives the names and functions of each part of the G3F-RD3A. Descriptions RUN LED It displays the operating status of G3F-RD3A module ℵ...
  • Page 11: G4F-Rd2A

    Chapter 2. SPECIFICATIONS 2.3.2 G4F-RD2A The following gives the names and functions of each part of the G4F-RD2A. RUN LED G4F-RD2A module operating status Indication On : Normal operation Flickering : Error occurred (For more information, see Section Common 4.1) - Off : 5 VDC disconnection or G4F-RD2A module error 2 - 4...
  • Page 12: Rtd Input Module Characteristics

    Chapter 2. SPECIFICATIONS RTD Input Module Char acteristics 2.4.1 Temperature Conversion Characteristics The RTD input module, as shown in the Fig. 2.1, linearlizes the non-linear characteristic resistance input of the RTD. Resistance temperature detection value [Fig. 2.1] Temperature conversion characteristics( Pt100) 2.4.2 Conversion speed The conversion speed of the RTD input module is 50 ms per channel and its processing is...
  • Page 13 Chapter 2. SPECIFICATIONS 2.4.4 Burn-out Detection Function The RTD input module has the function of burn-out detection on the Pt100, JPt100 or cable. 1) As shown in the Fig. 2.2, if disconnection occurs in the RTD or cable then a voltage outside the measurable range voltage is inputted by the internal burn-out detection circuit and burn-out detection error code is generated.
  • Page 14: Connection Between A Pt And Rtd Input Module

    Chapter 2. SPECIFICATIONS Connection between a Pt and RTD input module Number of method of connection between Pt and RTD input module are three, that is, 2 -wired type, 3- wired type and 4-wired type. The resistance of the wires used to connect Pt to RTD input module should be 10 Ω or less per wire. The same wire (in thickness, length, and kind, etc.) should be used for each channel.
  • Page 15: Chapter 3. Installation And Wiring

    Chapter 3. INSTALLATION AND WIRING Chapter 3. INSTALLATION AND WIRING Installation 3.1.1 Installation Ambience This module has high reliability regardless of its installation environment, but be sure to check the following for system reliability and stability. 1) Ambience requirements Avoid installing this unit in locations which are subjected or exposed to : - Water leakage and dust.
  • Page 16: Wiring Precaution S

    Chapter 3. INSTALLATION AND WIRING Wring Precautions When connecting Pt with the RTD input module, refer to the Chapter 2.5 for wiring. Be sure to separate the external input signal of the RTD input module from an alternating current so that surge or induction noise generated from the alternating current could not effect.
  • Page 17: Chapter 4. Function Blocks

    Chapter 4. FUNCTION BLOCKS Chapter 4. FUNCTION BLOCKS The followings explain the function blocks for the RTD input module used in GMWIN The types of function block are given here. G3F-RD3A G4F-RD2A Function Local Remote Local Remote RTD3INI RTDR3INI RTD2INI RTDR2INI Module Initialization Reading the detected temperature value...
  • Page 18: Local Function Blocks

    Chapter 4. FUNCTION BLOCKS 4.2 Local Function Blocks 4.2.1 Module Initialization (G3F-RD3A: RTD3INI, G4F-RD2A:RTD2INI) Module initialization function block specifies RTD input module base location, slot location, run channel enable/disable and the type of RTD for use in program. Function Data Variable Descriptions Block...
  • Page 19: Reading The Detected Temperature Value Of The Module(Array Type)

    Chapter 4. FUNCTION BLOCKS 4.2.2 Reading the Detected Temperature Value of the Module (Array Type) (G3F-RD3A : RTD3ARD, G4F-RD2A : RTD2ARD) The Array type temperature conversion value reading function block executes all channels of the RTD input module in a batch processing. If a channel is enabled then the function block outputs the detected temperature value and its digital conversion value that is usable as a PV in the PID control module.
  • Page 20: Reading The Detected Temperature Value Of The Module (Single Type)

    Chapter 4. FUNCTION BLOCKS 4.2.3 Reading the Detected Temperature Value of the Module (Single Type) (G3F-RD3A : RTD3RD, G4FRD2A : RTD2RD) The stand-alone type Temperature conversion value reading function block processes o nly one channel of the RTD input module. If a channel is enabled then the function block outputs the detected temperature value and its digital conversion value that is usable as a PV in the PID control module.
  • Page 21: Remote Function Blocks

    Chapter 4. FUNCTION BLOCKS 4.3 Remote Function Block 4.3.1 Module Initialization (G3F-RD3A : RTDR3INI, G4F-RD2A : RTDR2INI) The module initialization function block specifies, for use in the program, the location No. of the slot where the communication module loaded in the receiving station, the station No. of the communication module loaded in the remote I/O station, the No.
  • Page 22: Reading The Detected Temperature Value Of The Module

    Chapter 4. FUNCTION BLOCKS 4.3.2 Reading the Detected Temperature Value of the Module (G3F-RD3A : RTDR3RD, G4F-RD2A : RTDR2RD) The module temperature conversion value reading function block specifies the location No. of the slot where the communication module loaded in the receiving station, the station No. of the communication module loaded in the remote I/O station If also processes all channels in block.
  • Page 23: Errors On Function Block

    Chapter 4. FUNCTION BLOCKS 4.4 Errors on Function Block 4.4.1 Errors Indicated by the Output Variable STAT Errors indicated the output variable STAT and their corrective actions are explained. Function Block STAT Item Initiali - Readi n g Descriptions Corrective Action zati o n Array Stand...
  • Page 24: Chapter 5. Programming

    Chapter 5. PROGRAMMING Chapter 5. PROGRAMMING 5.1 A Program for Output of the Detected Temperature Value as a BCD Value 1) System Configuration The lamp turns on when the detected temperature value is negative 2) Initial Settings (1) Specifying the used channel: channel 0 (2) Specifying the type of the RTD : Pt 100 3) Descriptions of the Program The present A/D conversion value of the detected temperature value which is detected from the...
  • Page 25 Chapter 5. PROGRAMMING 4) Program Turns "ON" when the function blocks off the RTD input module In this program, %Q0.2.0 turns on when the temperature value read through channel 0 is a negative number and the temperature value of the negative temperature value number is converted into positive.
  • Page 26 Chapter 5. PROGRAMMING 5) Setting the initial values of I/O variables (1) specifying channel This denotes Select this and this 8 channels screen appears. Select this and this screen appears. Channel No. To select the previous channel To select the next channel Channel enable : 1 To specify channel enable/ disable...
  • Page 27 Chapter 5. PROGRAMMING (2) Specifying the type of the RTD Channel No. 0 : Pt100 1 : JPt100 Specify Pt100 or JPt100 5 - 4...
  • Page 28 Chapter 5. PROGRAMMING 6) I/O variables used in the program Variable Name Var_Kind Data Type (AT Address) (Initial Value) ALARM : VAR : BOOL BUFFER : VAR : DINT CHO_DIGITAL : VAR : INT CHO_TEMPERATURE : VAR : INT PT100 : VAR ARRAY[0..7] OF BOOL : = { 0, 0, 0, 0, 0, 0, 0, 0}...
  • Page 29: And Output As A Bcd Value

    Chapter 5. PROGRAMMING 5.2 A Program for Conversing the Detected Temperature Value(° C) into Fahrenheit(° F) and Output as a BCD Value 1) System value negative Initial Settings (1) Specifying the used channel : channel 0 (2) Specifying the type of a temperature - measuring resistor : Pt 100 The Expression that Converts the Detected Temperature Value into a Fahrenheit Detected temperature value = real temperature value x 10 Fahrenheit temperature...
  • Page 30 Chapter 5. PROGRAMMING Program Indicating the error status during Indicating error Initialization Request reading function status during initialization command for operation of the block execution function block execution reading function Loaded Turns "On" when input module block when it Base No. base No.
  • Page 31 Chapter 5. PROGRAMMING I/O variables used in the Program Variable Name Var_Kind Data Type (AT Address) (Initial Value) ACTO : VAR : ARRAY [0..7] OF BOOL ALARM : VAR : BOOL BUFFER0 : VAR : DINT BURRER1 : VAR : DINT DATAO : VAR : INT...
  • Page 32: A Program When Loading The Rtd Input Module Onto The Remote I/O Station

    Chapter 5. PROGRAMMING 5.3 A Program when Loading the RTD Input Module onto the Remote I/O Station System Configuration GM3- GM3- G3L- G3Q- PA1A CPUA FUEA RY2A Remote Station No. Slot 0 "0" GM3- G3S- G3F- PA1A RBEA RD3A Initial Settings Specifyi n g the used channel : channel 0 (2) Specifying the type of a RTD : Pt 100 Descriptions of the Program...
  • Page 33 Chapter 5. PROGRAMMING Program The RTD input module Base No. of the RTD Input module. Slot location No. of the RTD input module RTD input module RTD input module Specifying the used channel 5 - 10...
  • Page 34 Chapter 5. PROGRAMMING I/O variables used in the Program Variable Name Var_Kind Data Type (AT Address) (Initial Value) ACTO : VAR : ARRAY [0..7] OF BOOL ACT1 : VAR : ARRAY [0..7] OF BOOL ALARM : VAR : ARRAY [0..7] OF BOOL ALARM_NO : VAR : ARRAY [0..7] OF BOOL...
  • Page 35: Chapter 6. Buffer Memory Configuration And Functions

    Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS The RTD input module a PLC CPU and buffer memories for data communications. 6.1 Buffer Memory Configuration The followings describe buffer memory configuration. 6.1.1 G3F-RD3A Buffer Memory Address Default Read /...
  • Page 36: G4F-Rd2A Buffer Memory

    Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS 6.1.2 G4F-RD2A Buffer Memory Address Default Read / Function Description (Decimal) Setting Wr ite Channel enable/disable specification Bit On(1):enable, Bit Off(0):disable disable Channel 0 Specifying RTD type “ Channel 1 Specifying RTD type “...
  • Page 37: Functions Of Buffer Memory

    Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS 6.2 Functions of Buffer Memory 4Each address in the internal memory occupies one word and it is represented with 16 bits. 4In the 16 bits which compose an address, every bit can be set to either “1” when it should be turned On or “0 ” when Off in order to implement the function of each bit.
  • Page 38: Detected Temperature Value

    Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS 6.2.3 Detected Temperature Value (G3F-RD2A : Addresses 9, 12, 15, 18, 24, 27 and 30, G4F-RD2A : Addresses 5, 8, 11 and 14) 1) This area performs sampling processing of the temperature value that is input through the RTD connected to the terminal block of a channel and stores the value of 10 times of the real temperature value.
  • Page 39: Information On Run Channel

    Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS 1) If a bit corresponding to each channel in Set Data specification area is turned On(1), then the RTD input module executes the temperature conversion with user -defined setting data at the address 0 to 8 in the G3F-RD3A and at the address 0 to 4 in the G4F-RD2A.
  • Page 40: (G3F-Rd3A : Address 35, G4F-Rd2A : Address 19)

    Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTIONS (G3F-RD3A : Address 35, G4F-RD2A : Address 19) 1) If error occurs in other value than "0" and "1" is set at the addresses (Address 1 to 8 in G3F-RD3A, Address 1 to 4 in G4F -RD2A) used for specifying the type of the RTD which is connected t o each channel of the RTD input module 2) If error occurs at a channel, then the channel runs with Pt 100 as its type of the RTD.
  • Page 41: Chapter 7. Dedicated Instructions For Special Modules

    Chapter 7. DEDICATED INSTRUCTIONS FOR SPECIAL MODULES Chapter 7. DEDICATED INSTRUCTIONS FOR SPECIAL MODULES (Read from /Write to Buffer Memory) I/O points of the RTD input module are 16. 7.1 Local 7.1.1 Read from Buffer Memory ⋅ ⋅ ⋅ GET, GETP execution condition <Format>...
  • Page 42: Write To Buffer Memory...put, Putp

    Chapter 7. DEDICATED INSTRUCTIONS FOR SPECIAL MODULES 7.1.2 Write to Buffer Memory ⋅ ⋅ ⋅ PUT, PUTP execution condition <Format> for PUT Format Descriptions Available Data Type The number of the slot where the specific module mounted Integer First address of the specific module buffer memory to which the Integer data will be written..
  • Page 43: Read From Buffer Memory

    Chapter 7. DEDICATED INSTRUCTIONS FOR SPECIAL MODULES 7.2 Remote 7.2.1 Read from Buffer Memory …RGET Execution condition <Format> for GET RGET Format Descriptions Available data type Higher(AB) : Code value for RTD input module Integer G3F - RD3A : 04h G4F - RD2A : 84h Lower(CD) : Slot No.
  • Page 44: Write To Buffer Memory

    Chapter 7. DEDICATED INSTRUCTIONS FOR SPECIAL MODULES 7.2.2 Write to Buffer Memory …RPUT Execution condition <Format> for RPUT RPUT Format Description Available data type Upper(AB) : Code value for RTD input module Integer G3F - RD3A : 04h G4F - RD2A : 84h Lower(CD) : Slot No.
  • Page 45: Chapter 8. Programming

    Chapter 8. PROGRAMMING Chapter 8. PROGRAMMING Basic Programming The following describes the method to set the running conditions in the buffer memories of the RTD input module. The RTD input module is already mounted on the slot 2. The I/O point of the RTD input module are 16. 8.1.1 G3F-RD3A Address of buffer...
  • Page 46: G4F-Rd2A

    Chapter 8. PROGRAMMING 8.1.2 G4F-RD2A Address of Buffer memory Slot No. Specifying the type of the RTD input module to Pt100(channel 0, 1) Specifying the type of the RTD input module to JPt100(channel 2, 3) Reading error information on specification of the type of RTD input module 8 - 2...
  • Page 47: Application Programming

    Chapter 8. PROGRAMMING Application Programming 8.2.1 A Program for Output of the Detected Temperature Value as a BCD Value 1) System Configuration GM3- GM3- G3F - G3Q- G3Q- PA1A CPUA RD3A RY4A RY2A The lamp turns on if the detected temperature value is negative.
  • Page 48: A Program For Conversing The Detected Temperature Value(°C) Into Fahrenheit(°F)

    Chapter 8. PROGRAMMING 8.2.2 A Program for Conversing the Detected Temperature Value(° C) into Fahrenheit(° F) and Outputting a BCD Value 1) System Configuration GM3- GM3- G3I- G3F- G3Q- G3Q- G3Q- PA1A CPUA D24A RD3A RY4A RY2A RY4A The Fahrenheit temperature is displayed (BCD digital display) The lamp turns on if the Fahrenheit temperature value is a negative value...
  • Page 49 Chapter 8. PROGRAMMING 5) Program Specifying the type of the RTD to Pt100 Enabling the SET data of the RTD input module Outputting the detected Temperature value of centigrade Stored at D0 to P030 toP043 after The conversion of it into a BCD value Outputting the detected Temperature value of Fahrenheit...
  • Page 50: A Program When Loading The Rtd Input Module Onto The Remote I/O Station

    Chapter 8. PROGRAMMING 8.2.3 A Program when Loading the RTD Input Module onto the Remote I/O Station 1) System Configuration GM3- GM3- G7L- G3Q- CPUA PA1A FUEA RY2A . "0" GM3- G3L- G3F- RD3A PA1A RBEA 2) Initial Settings (1) Specifying used channel : channel 0 (2) Specifying the type of the RTD : Pt 100 3) Descriptions of the Program (1) P0010 turns on if the temperature value detected at channel 0 is more than or equal to –10°C.
  • Page 51 Chapter 8. PROGRAMMING 4) Program Condition Slot No. of the RTD input module mounted onto the Specifying the type of the RTD to Pt100 remote station Code of the RTD input First address of the buffer communication information module memory to be written the data buffer memory Enabling the SET data of the RTD input module...
  • Page 52: Chapter 9. Troubleshooting

    Chapter 9. TROUBLESHOOTING Chapter 9. TROUBLESHOOTING The followings explain errors that could occur during operating the RTD input module and their troubleshooting. Errors Indicated by RUN LED Flickering Errors indicated by the flickering RUN LED of RTD input module a re given below. RUN LED Status Descriptions Remark...
  • Page 53: Troubleshooting Procedure

    Chapter 9. TROUBLESHOOTING Troubleshooting Procedure 9.2.1 RUN LED Flickering RUN LED flickering RUN LED flickering with 0.1 sec cycle See Section 9.2.5 RUN LED flickering with 0.2 sec cycle. See Section 9.2.5 RUN LED flickering with 0.6 sec cycle. See Section 9.2.5 RUN LED flickering with 1 sec cycle.
  • Page 54: Detected Temperature Value Unreadable From The Cpu Module

    Chapter 9. TROUBLESHOOTING 9.2.3 Detected Temperature Value Unreadable from the CPU Module. CPU module cannot read the temperature conversion value. RUN LED is turned off. See Section 9.2.2 RUN LED is flickering See Section 9.2.1 The use channels are correctly specified. Check the use channels and correctly specify them.
  • Page 55: Input Value Of The Rtd Is Not Consistent With

    Chapter 9. TROUBLESHOOTING 9.2.4 Input value of the RTD is not consistent with the detected temperature value. Input value of the RTD is not consistent with the detected t e mperature value. RUN LED is flickering. See Section 9.2.2 The specified RTD type for the corresponding channel is consistent with the connected RTD type Check the type of the RTD and correctly specify the type...
  • Page 56: Chapter 10. Dimensions

    Chapter 10. DIMENSIONS Chapter 10. DIMENSIONS 10.1 G3F-RD3A Dimensions 10 - 1...
  • Page 57: G4F-Rd2A Dimensions

    Chapter 10. DIMENSIONS 10.2 G4F-RD2A Dimensions 10 - 2...
  • Page 58 PRECAUTIONS Be sure to read carefully the safety precautions given in data sheet and user’s manual before operating the module and follow them. The precautions explained here only apply to the G3F-RD3A and G4F-RD2A. For safety precautions on the PLC system, see the GLOFA GM3/4 User’s Manual or the MASTER-k 1000S/300S User’s Manual.
  • Page 59 Wiring Precautions CAUTION ▶ When grounding a FG terminal, be sure to provide class 3 grounding which is dedicated to the PLC. If not grounded, It can cause malfunction. ▶ Before the PLC wiring, be sure to check the rated voltage and terminal arrangement for the module and observe them correctly.
  • Page 60: Appendix 1. Standard Resistance Value Of Pt/Rtd

    APPENDIX 1. APPENDIX 1. Standard Resistance Value of Pt/RTD Unit : Ω Pt 100Ω Temperature Temperature -200 -100 (°C) (°C) 18.49 60.25 100.00 100.00 138.50 175.84 212.02 247.04 280.90 313.59 56.19 96.09 103.90 142.29 179.51 215.57 250.48 284.22 52.11 92.16 107.79 146.06 183.17...

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