LG GLOFA G3F - RD3A User manual

User’s Manual
LG Programmable Logic Controller
G3F –RD3A
G4F –RD2A
GLOFA
LG
Industrial Systems

◎
CONTENTS
◎
Chapter 1. INTRODUCTION
1.1 Features
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
1 –1
1.2 Glossary
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ ⋯⋯⋯⋯⋯
1 –2
1.2.1 A –Analog Value ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 1 –2
1.2.2 D –Digital Value ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 1 –2
1.2.3 PT ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 1 –2
1.2.4 Burn-out function ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 1 –2
Chapter 2. SPECIFICATIONS
2.1 General Specifications ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –1
2.2 Performance Specifications ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –2
2.3 Names of Parts and Functions ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –3
2.3.1 G3F-RD3A ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –3
2.3.2 G4F-RD2A ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –4
2.4 RTD Input Module Characteristics ⋯⋯ ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –5
2.4.1 Temperature Conversion Characteristics ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –5
2.4.2 Conversion Speed ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –5
2.4.3 Accuracy ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –5
2.4.4 Burn-out Function ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –6
2.5 Connection between a Pt and RTD Input Module ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 2 –7
Chapter 3. INSTALLATION AND WIRING
3.1 Installation ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 3 –1
3.1.1 Installation Ambience ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 3 –1
3.1.2 Handling Precautions ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 3 –1
3.2 Wiring Precautions ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 3 –2

Chapter 4. FUNCTION BLOCKS
4.1 Inserting Function Blocks for RTD Input Modulein GMWIN ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –1
4.2 Local Function Blocks ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –2
4.2.1 ModuleInitialization (G3F-RD3A:RTD3INI, G4F-RD2A:RTD2INI)⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –2
4.2.2 ReadingtheDetected Temperature Valueof the Module(ArrayType)
(G3F-RD3A:RTD3ARD, G4F-RD2A:RTD2ARD) ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –3
4.2.3 ReadingtheDetected Temperature Value of the Module (Single Type)
(G3F-RD3A : RTD3RD, G4F-RD2A : RTD2RD) ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4–4
4.3Remote Function Blocks ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –5
4.3.1 Module Initialization (G3F-RD3A:RTDR3INI, G4F-RD2A:RTDR2INI)⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –5
4.3.2 Reading the Detected Temperature Value of the Module ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –6
(G3F-RD3A:RTDR3ARD, G4F-RD2A:RTDR2ARD)
4.4 Errors on Function Block
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
4 –7
4.4.1 Errors Indicated by the Output Variable STAT ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –7
4.4.2 Error Indicated by the Output Variable ALM_CODE in the Array Type
Detected Temperature Value Reading Function Block ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4 –7
Chapter 5. PROGRAMMING
5.1 A Program for Output of the Detected Temperature Value as a BCD Value
⋯⋯⋯⋯⋯⋯⋯
5 –1
5.2 AProgram for Conversing the Detected Temperature Value( ° C) into Fahrenheit( ° F)
and Output as a BCD Value ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 5 –6
5.3 A Program when Loading the RTD Input Module onto the Remote I/O Station ⋯⋯⋯⋯⋯⋯ 5 –9
Chapter 6. BUFFER MEMORY CONFIGURATIONAND FUNCTIONS
6.1 Buffer MemoryConfiguration ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –1
6.1.1 G3F-RD3A Buffer Memory ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –1
6.1.2 G4F-RD2A Buffer Memory ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –2
6.2 Functions of Buffer Memory ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –3
6.2.1 Specifying Channel Enable/Disable ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –3
(G3F-RD3A :Address 0,G4F-RD2A :Address 0)
6.2.2 Specifying the Type of the RTD ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –3
(G3F-RD3A :Addresses 1 to 8, G4F-RD2A :Addresses 1 to 4)
6.2.3 Detected Temperature Value ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –4
(G3F-RD3A :Addresses 9,12,15,18,21,24,27and30, G4F-RD2A :Addresses 5, 8, 11 and 14)

6.2.4 Digital Conversion Value ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –4
(G3F-RD3A :Addresses 10, 13, 16, 19, 22, 25, 28 and 31, G4F-RD2A :Addresses6, 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 7,10,13and16)
6.2.6 Specifying SETData ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –5
(G3F-RD3A :Address 33, G4F-RD2A :Address 17)
6.2.7 Information on Run Channel ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6 –5
(G3F-RD3A :Address 34, G4F-RD2A :Address 18)
6.2.8 Information on RTD Specification Error ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6–6
(G3F-RD3A :Address 35,G4F-RD2A :Address 19)
Chapter 7. DEDICATED INSTRUCTIONSFOR SPECIAL MODULES
(Readfrom/WritetoBufferMemory)
7.1 Local
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 7–1
7.1.1 Read from Buffer Memory⋯GET, GETP⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯7–1
7.1.2 Write to Buffer Memory⋯PUT, PUTP⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯7–2
7.2 Remote ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 7–3
7.2.1 Read from Buffer Memory⋯RGET ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 7 –3
7.2.2 Write to Buffer Memory⋯RPUT ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 7–4
Chapter 8. PROGRAMMING
8.1 Basic Programming ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8–1
8.1.1 G3F-RD3A ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8 –1
8.1.2 G4F-RD2A ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8 –2
8.2 Application Programming ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8 –3
8.2.1 A Program for Output of the Detected Temperature Value as a BCD Value ⋯⋯⋯⋯⋯⋯ 8 –3
8.2.2 AProgram for Conversing the Detected Temperature Value(°C) into Fahrenheit(°F)
and Output as a BCD Value ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8 –4
8.2.3 A Program when Loading the RTD Input Module onto the Remote I/O Station ⋯⋯⋯⋯⋯8–6
Chapter 9. TROUBLESHOOTING
9.1 ErrorsIndicated by RUN LED Flickering ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 9–1
9.2 Troubleshooting Procedure ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 9–2
9.2.1 RUN LED Flickering ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 9 –2
9.2.2 RUN LED Off ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 9–2
9.2.3 Detected Temperature Value Unreadable from the CPU Module ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 9 –3

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 ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 10 –2
Appendix1. Standard Resistance Value of Pt/RTD ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ A –1

Chapter 1. INTRODUCTION
1 -1
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.
1.1 Features
1) With direct connection of the RTD input module, the temperature data(°C) can be converted into a digital
value to be processed in the PLC.
2) The temperature data(°C) input can be processed to one digit after the point asa digital value.
3) One module can be connected to G3F-RD3A 8-point or G4F-RD2A 4-point Pt100 or JPt100.
4) The RTD input module has Pt100, Jpt100 or cable burn-out function at their every channel.
5) The RTD input module detects the out-of-rangetemperaturethat is input by Pt100 or JPt100.

Chapter 1. INTRODUCTION
1 -2
1.2 Glossary
1.2.1 A-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.
1.2.2 D -Digital Value
In Fig.1.2, the number of man can be counted as 0, 1, 2, 3. The non-continuous changeable value as such
iscalled a digital value. On and Off signals can be denoted as a digital value 0 and 1, respectively.
Analog value cannot be directly input to the CPU
module for digital processing. Therefore, analog value
should be converted into a digital value to be input to
the CPU module. In addition, for external output of
analog value, digital value of the CPU module should
beconverted into analogvalue.
1.2.3 Pt
This is a sensor that detects temperature as the type of resistance.
The Pt 100 outputsthe resistance valueof 100.00 Ωfor the temperature of 0 °C
1.2.4 Burn-out Function
If a part of the connected RTD or cable is disconnected, the out-of-range voltage is input by the internal
burn-outcircuit and theconnection or disconnection is detected.
A/D
Conversion
CPU
(Digital
processing)
D/A
Conversion
Analog
-200~-600℃
Analog
0~±10Vor
4~20mA
[Fig 1.3] Processing in the PLC
0
Temperature
time time
Numberofman
[Fig 1.1] Analog Value [Fig 1.2] Digital Value
0

Chapter 2. SPECIFICATIONS
2-1
REMARK
Chapter 2. SPECIFICATIONS
2.1 General Specifications
Table 2.1 shows general specifications of the GLOFA GM series and MASTER-Kseries
No Item Specifications Reference
specification
1Operating
ambient
temperature 0 ~ 55 °C
2Storage
ambient
temperature -25 ~ +75 °C
3Operating
humidity 5 ~ 95%RH, non-condensing.
4Storage
humidity 5 ~ 95%RH, non-condensing.
Occasional vibration
Frequency Acceleration Amplitude Sweep
Count
10≤f<57 Hz -0.075mm
57≤f≤150 Hz 9.8 m/s2{1G} -
Continuous vibration
Frequency Acceleration Amplitude
10≤f <57 Hz -0.035mm
5
Vibration
57≤f≤150 Hz 4.9 m/s2{0.5G} -
10 times in
each
direction
for X,Y,Z
IEC 61131-2
6Shocks lMaximum shock acceleration: 147 m/s2{15G}
lDuration time : 11ms
lPulse wave: half sine pulse (3 times in each of X, Y and Z directions)
IEC 61131-2
Square wave impulse
noise ±1,500 V LGIS Standard
Electrostaticdischarge Voltage : 4 kV (contact discharge) IEC 61131-2,
IEC1000-4-2
Radiated electromagnetic
field 27 ~ 500 MHz, 10 V/m IEC 61131-2, IEC 1000-4-3
Severity
Level
All
Power
modules
Digital
I/Os (Ue
> 24 V)
DigitalI/Os
(Ue < 24 V)
Analog I/Os
interface
communication
I/Os
7Noise
Immunity
Fast transient/burst noise
Voltage 2 kV 1 kV 0.25 kV
IEC 61131-2,
IEC 1000-4-4
8Operating
Atmosphere Free from corrosive gases and excessive dust.
9Operation
Altitude Up to 2,000m
10 Pollution
degree 2
11 Cooling
method Self-cooling
[Table 2.1] General Specifications
1) IEC(International Electromechanical Commission) : The international civilian organization which produces standards
for electrical and electronic industry.
2) Pollution degree : It indicates a standard of operating ambient pollution level The pollution degree 2 means the condition
in which normally, only con-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by
condensation shall be expected.

Chapter 2. SPECIFICATIONS
2-2
2.2 Performance Specifications
Table 2.2 shows performance specifications of the RTD input module.
Specifications
Item G3F-RD3A G4F-RD2A
Connectable RTD Pt 100 (JIS C1640-1989,DIN 43760-1980)
JPt100 (KS C1603-1991,JIS C1604-1981)
Temperatureinput range Pt100
JPt100 : -200.0°Cto 600°C (18.48 to 313.59Ω)
: -200.0°Cto 600°C (17.14 to 317.28Ω)
Digital output
Digital conversion value : 0 to 16,000
Detected temperature value : -2000 to 6000 (one digit after
point 510)
Buffermemory Each of three wires at every channel has detection
function.
Accuracy ±0.5 %(full scale)
Maximum conversion speed 50msperchannel
Number of temperature input device points 8 channels per module 4 channels per module
Insulationmethod Photo-coupler insulation between the input terminal and
the PLC power supply (non-insulationbetween channels)
Connection terminal block 38-pointterminal block 20-point terminalblock
Internal current consumption 0.5 A 0.45A
Weight 630 g 350 g
[Table. 2.2 Performance Specifications]

Chapter 2. SPECIFICATIONS
2-3
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.
No. Descriptions
RUNLED
ℵIt displays the operating status of G3F-RD3A module
lOn : Normal Operation
lFlickering : Error occurred (For more information,
see Chapter 4.1
lOff : DC 5V disconnection or the G3F-RD3A
module error