LG Industrial Systems GLOFA User manual

User’s Manual
LG Programmable Logic Controller
GLOFA
MASTER-K
LG Industrial Systems
G3F-DA4V
G3F-DA4I
G4F-DA1A

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-DA4V, G3F-DA4I and G4F-DA1A(hereafter, called D/A con-
version module)
For safety precautions on the PLC system, see the GLOFA GM3/4 User’s Manuals and the MASTER-K200S/300S/
1000S CPU User’s Manuals.
A precaution is given with a hazard alert triangular symbol to call your attention, and precautions are represented
as follows according to the degree of hazard.
However, a precaution followed with can also result in serious conditions.
Both of two symbols indicate that an important content is mentioned, therefore, be sure to observe it.
Keep this manual handy for your quick reference in necessary.
SAFETY PRECAUTIONS
WARNING
!
If not provided with proper prevention, it can cause death or fatal
injury or considerable loss of property.
CAUTION
!
If not properly observed, it can cause a hazard situation to result
in severe or slight injury or a loss of property.
CAUTION
!
CAUTION
!
Design Precautions
▶
Design a safety circuit in the outside of the PLC for system safety in
case of disorder of the external power or PLC module body. Other-
wise, it can cause injury due to wrong output or malfunction.
1) The following shows analog output states according to various
settings of functions that control analog output. When setting an
output state, be cautious for safety. Channel SpecificationChannel Setting
State Used Unused
PLC CPU in RUN state. A D/A conversion
value is output.
PLC CPU in STOP state
PLC CPU in Error state
Communication error of
the remote I/O station
(When loaded on the
remote I/O station)
A value of the speci-
fied output state will
be output.
0: Median value of the
outputrange
1: Previous value
2: Max. value of the
outputrange
3: Min. value of the
outputrange
Voltage:
0 V
Current:
12 mA
2) Sometimes, fault of output device or internal circuit can make
output abnormal. Design a supervising circuit in the outside for
output signals which can cause serious accidents.
CAUTION
!
▶
Do not run I/O
signal lines near
to high voltage
line or power line.
Separate them as
100 mm or more
as possible. Oth-
erwise, noise can
cause module
malfunction.

WARNING
!
Test Run and Maintenance
Precautions
▶Do not contact the terminals
while the power is applied.
It can cause malfunction.
▶
When cleaning or driving a term
i-
nal screw, perform them after the
power has been turned off
▶
Do not perform works while the
power is applied, which can
cause disorder or malfunction.
CAUTION
!
▶
Do not separate the module from
the printed circuit board(PCB), or
do not remodel the module.
They can cause disorder, mal-
function, and damage
of the
module or a fire.
When mounting or dismounting
the module
, perform them after
the power has been turned off.
▶
Do not perform works while the
power is applied, which can
cause disorder or malfunction.
CAUTION
!
Waste Disposal Precautions
▶When disposing the module, do it as an industrial waste.
CAUTION
!
Installation Precautions
▶
Operate the PLC in the environ-
ment cond
itions given in the
generalspecifications.
▶If operated in other
environment
not specified in the general
specifications, it can cause an
electric shock, a fire, malfunction
or damage or degradation of the
module
▶
Make sure the module fixing
projectio
ns is inserted into the
module fixing hole and fixed.
▶Improper installation of the mod-
ule can cause malfunction, dis-
order or falling.
CAUTION
!
WiringPrecautions
▶When grounding a FG terminal,
be sure to provide class 3
grounding which is dedicated to
the PLC.
▶Before the PLC wiring, be sure to
check the rated voltage and ter-
minal arrangement for the mod-
ule and observe them correctly.
If a different power, not of the
rated voltage, is applied or
wrong wiring is provided, it can
cause a fire or disorder of the
nodule.
▶Drive the terminal screws firmly
tothedefinedtorque.
If loosely driven, it can cause
short circuit, a fire or malfunc-
tion.
▶
Be care
ful that any foreign matter
like wire scraps should not enter
into the module.
It can cause a fire, disorder or
malfunction.

◎
CONTENTS
◎
Chapter 1. INTRODUCTION
1.1 Features ············································································································································1 -1
1.1.1 G3F-DA4V G3F-DA4I···················································································································1 -1
1.1.2 G4F-DA1A·····································································································································1 -1
1.2 Glossary ············································································································································1 -2
1.2.1 A-Analog Value ·····························································································································1 -2
1.2.2 D-DigitalValue ····························································································································1 -2
1.2 3 Digital/AnalogConversion Characteristics ···················································································1 -3
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-DA4V / G3F-DA4I ···············································································································2 -3
2.3.2 G4F-DA1A ································································································································2 -5
2.4 External Power Supply ( ± 15 VDC Specifications)······································································2 -6
2.5 I/O Conversion Characteristics···········································································································2 -7
2.5.1 Offset/GainValue ························································································································2 -7
2.5.2 Example for I/O Conversion Characteristic ················································································2 -7
2.5.3 Relations between Offset/Gain Valueand Analog Output ·························································2 -8
2.5.4 I/O Conversion Characteristics According to theOffset/Gain Setting ········································2 -9
1) VoltageOutput Characteristics ··································································································2 -9
2) CurrentOutput Characteristics ·································································································2 -11
2.6 D/A Conversion Speed ··················································································································2-12
2.7 Offset/GainSetting·····························································································································2-12
2.7.1 Noteson Setting Offset/Gain Value····························································································2-13
2.7.2 Procedures of Setting Offset/Gain ··························································································2-14

Chapter 3. INSTALLATION AND WIRING
3.1 Installation·············································································································································3 -1
3.1.1 InstallationAmbience····················································································································3 -1
3.1.2 Installation Precautions·················································································································3 -1
3.2 Wiring ··················································································································································3 -2
3.2.1 Wiring Precautions························································································································3 -2
3.2.2 WiringExamples ·······················································································································3 -2
1) G3F-DA4V·······································································································································3 -2
2) G3F-DA4I ····································································································································3 -3
3) G4F-DA1A·······································································································································3 -3
3.3 Wiring between the G3F-DA4I or the G3F-DA4V and DC 15V ·························································3 -5
3.3.1 On Use of the G3F-PA1A or the G3F-PA2A·················································································3 -5
3.3.2 On Use of External Power Supply ······························································································3 -6
Chapter 4. FUNCTION BLOCK
4.1 Insertion of the Function Block for the D/A Conversion Module on the GMWIN··························4 -1
4.2 Local Function Block ······················································································································4 -2
4.2.1 Module Initialization ··················································································································4 -2
(G3F-DA4V / G3F-DA4I : DA4INI, G4F-DA1A : DA1INI)
4.2.2 Module Write_Array Type ···········································································································4 -3
(G3F-DA4V / G3F-DA4I:DA4AWR, G4F-DA1A : DA1AWR)
4.2.3 Module Write_Single Type············································································································4 -4
(G3F-DA4V / G3F-DA4I : DA4WR, G4F-DA1A : DA1WR)
4.3 RemoteFunction Block ·····················································································································4 -5
4.3.1 Module Initialization (G3F-DA4V / G3F-DA4I : DAR4INI, G4F-DA1A : DAR1INI)·······················4 -5
4.3.2 Module Write (G3F-DA4V / G3F-DA4I : DAR4WR, G4F-DA1A : DAR1WR)·······························4 -6
4.4 Errors on Function Block····················································································································4 -7
Chapter 5. GM PROGRAMMING
5.1 Programming for Controlling InverterSpeed with 5 Step Analog Output Voltage·······················5 -1
5.2 Programming for Displaying D/A Conversions whichisSet by Digital Switch ··························5 -6
5.3 Programming for Mounting D/A Conversion Module on Remote I/O Station ·····························5 -9

Chapter 6. BUFFER MEMORY CONFIGURATION AND FUNCTION
6.1 Buffer Memory Configuration ···········································································································6 -1
6.1.1 G3F-DA4V / G3F-DA4I ···············································································································6 -1
6.1.2 G4F-DA1A ································································································································6 -2
6.2 Buffer MemoryFunction······················································································································6 -3
6.2.1 Available ChannelSpecification ·······························································································6 -3
6.2.2 DataInput Type Specification·······································································································6 -3
6.2.3 Digital Input ·································································································································6 -4
6.2.4 Specification of CPUModule's Stop Conditionor Disabled Channel's OutputCondition············6 -4
6.2.5 SET DataSpecification ···············································································································6 -5
6.2.6 ChannelOperation Data Area······································································································6 -5
Chapter 7. SPECIALMODULECOMMAND(BUFFER MEMORYREAD/WRITE)
7.1 Local Command···································································································································7 -1
7.1.1 BufferMemory Read-GET, GETP Command ············································································7 -1
7.1.2 Buffer Memory Write-PUT, PUTP Command ··········································································7 -2
7.2 Remote Command································································································································7 -3
7.2.1 Buffer Memory Read-RGET ······································································································7 -3
7.2.2 BufferMemory Write-RPUT ····································································································7 –4
Chapter 8. MK PROGRAMMING
8.1 Basic Programming ·························································································································8 -1
8.1.1 G3F-DA4V / G3F-DA4I ················································································································8 -1
8.1.2 G4F-DA1A ································································································································8 -2
8.2 Application Programming ···············································································································8 -3
8.2.1 Programming for Controlling InverterSpeed with 5 Step Analog Output Voltage·······················8 -3
8.2.2 Programming for Displaying of D/A Conversions which is Set byDigital Switch ····················8 -5
8.2.3 Programming for Mounting D/A Conversion Module on RemoteI/O Station ····························8 -7
Chapter 9. TROUBLESHOOTING
9.1 Error Code Indicated by RUN LED Flickering···················································································9 -1
9.2 Troubleshooting Procedure················································································································9 -1
9.2.1 RUNLEDFlickering ····················································································································9 -1
9.2.2 RUNLEDOff ····························································································································9 -2
9.2.3 SuddenD/A OutputValue Change·······························································································9 -3

9.2.4 Digital and Analog Value Mismatch······························································································9 -4
9.2.5 D/A Output Value Always deviates from Specified Value·····························································9 -5
9.2.6 AnalogOutputValueAccording to D/A Input Valueisn'tChanged ··············································9 -6
9.2.7 D/AConversion Module HardwareFault ····················································································9 -6
Chapter 10. G3F-PA1A/G3F-PA2A POWER SUPPLY MODULE
10.1 Performance Specification ············································································································10 -1
10.2 Notes on Handling ·························································································································10 -2
10.3 NamesofParts ·······························································································································10 -2
10.4 Dimensions ····································································································································10 –3
Chapter 11. DIMENSIONS
11.1 G3F-DA4V / G3F-DA4I Dimensions ·····························································································11 -1
11.2 G4F-DA1A Dimensions ·················································································································11 -2

Chapter 1. INTRODUCION
1 -1
Chapter 1. INTRODUCTION
The G3F-DA4V, the G3F-DA4I and the G4F-DA1A are digital/analog conversion modules for use with the GLOFA
PLC GM 1/2/3/4 series CPU module and the MSTER-K300S/1000S series CPU module. The G4F-DA1A is used
on the GM4 series module and the K300S series module. the G3F-DA4V and the G3F-DA4I are used on the
GM1/2/3 series module and the K1000S series module. (Here-in-after the G4F-DA1A, G3F-DA4V and G3F-DA4I
are called the D/A conversion module)
The D/A conversion module is to convert a 16-bit, signed BIN digital value into an analogoutput signal (voltage or
current).
1.1 Features
1.1.1 G3F-DA4V / G3F-DA4I
1)Allows digital to Analog conversion for 16 channels per a module.
G3F-DA4V: 1 module can be performed for D/A conversion (voltage output) of 16 channels.
G3F-DA4I: 1 module can be performed for D/A conversion (current output) of 16 channels.
2) High resolution of 1/16000
A digital value resolution can be selected among 1/16000 and so the analog value of high resolution
iskept.
4)The number of the D/A conversion module mounted on one base is unlimited.
On use of power supply module of the G3F-PA1A or G3F-PA2A, the G3F-DA4V and G3F-DA4I can
be mounted up to 4.
1.1.2 G4F-DA1A
1)Allows digital to Analog conversion for 2 channels per a module.
1 module can be performed for D/A conversion (voltage or current output) of 2 channels.
2) High resolution of 1/16000
A digital value resolution can be selected among 1/16000 and the analog value of high resolution is
kept.
3)The number of the G4F-DA1A mounted on one base is unlimited.

Chapter 1. INTRODUCION
1 -2
1.2 Glossary
1.2.1 A-Analog Value
Analog value is a sequentially changing value such as voltage, current, temperature, speed, pressure,
flux, etc.
Temperature, for example, is sequentially changing according to the time. Because this temperature is
not input on the PLC directly, the same analog value of DC voltage (0 to ±10V) or current (4 to 20mA)
inaccordance with the temperature should be input on the PLC through transducer.
1.2.2 D-Digital Value
Digital value is non-sequentially changing value written
as the number like 0, 1, 2, 3. The signal of on or off is
written as digital value of 0 or 1. There are BCD value
and binary value in the range of digital value.
Analog value isn't written directly on the CPU. For
analog input to the CPU operation, analog converted
to digital value has to be input on the CPU. and for
analog output, the digital of CPU should be
converted to analog.
Numberofman
time
[Fig. 1.3] Digital quality
A/D
Conversion
CPU
(Digital
processing)
D/A
Conversion
Analog
0~±10V or
4~20mA
Analog
0~±10Vor
4~20mA
[Fig. 1.4] conversion processing
in the PLC
0
Temperature
time
[Fig 1.1] Analog Value [Fig 1.2] Example of Transducer
Temperature
0 ~ 1000°C
Transducer
-10 ~ 10V
voltage input to
A/Dconversion
module
⇒
⇒

Chapter 1. INTRODUCION
1 -3
1.2.3 Digital/Analog Conversion Characteristics
1)Voltageoutput
[Fig 1.5] D/A conversion characteristics(Voltage output)
Digital/analog conversion module allows digital value of the CPU to be converted intoan analog value
and to be output externally. Digital input value of 0 leads to analog output value of -10V and 16000
leads to 10V. Digital input value of 1 is equal to 1.25mV.
2)Currentoutput
[Fig 1.6] D/A conversion characteristics(Current output)
On current output, digital value of 0 is to be converted into 4mA and 16000.into 20mA. Digital input of 1
is equal to 1㎂.
Analog
output
current
Analog
output
current
Analog
output
voltage
Analog
output
voltage