Mitsubishi Electric FX2N-2DA User Manual page 7

FX -2DA SPECIAL FUNCTION BLOCK
2N
USER'S GUIDE
This manual contains text, diagrams and explanations which will guide the reader in the correct installation
and operation of the FX -2DA special function block and should be read and understood before
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attempting to install or use the unit.
Further information can be found in the FX SERIES PROGRAMMING MANUAL(ΙΙ), FX
FX /FX Programming Manual, FX /FX /FX /FX
3U 3UC 0N 1N 2 N
HARDWARE MANUAL of each PLC.
Compliance with EC directive (CE Marking)
This note does not guarantee that an entire mechanical module produced in accordance with the contents
of this note will comply with the following standards.
Compliance to EMC directive and LVD directive for the entire mechanical module should be checked by
the user/manufacturer. For more information please consult with your nearest Mitsubishi product provider.
Regarding the standards that comply with the main unit, please refer to either the FX series product
catalog or consult with your nearest Mitsubishi product provider.
Requirement for Compliance with EMC directive
The following products have shown compliance through direct testing (of the identified standards below)
and design analysis (through the creation of a technical construction file) to the European Directive for
Electromagnetic Compatibility (2014/30/EU) when used as directed by the appropriate documentation.
Attention
This product is designed for use in industrial applications.
Type: Programmable Controller (Open Type Equipment)
Models: MELSEC FX series manufactured
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from December 1st, 1998 FX -2DA
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Standard
EN61131-2: 2007 Compliance with all relevant aspects of the standard.
Programmable controllers EMI
- Equipment requirements and tests • Radiated Emission
• Conducted Emission
EMS
• Radiated electromagnetic field
• Fast transient burst
• Electrostatic discharge
• High-energy surge
• Voltage drops and interruptions
• Conducted RF
• Power frequency magnetic field
Caution for EC Directive
The FX -2DA have been found to be compliant to the European standards in the aforesaid manual and
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directive. However, for the very best performance from what are in fact delicate measuring and controlled
output device Mitsubishi Electric would like to make the following points;
As analog devices are sensitive by nature, their use should be considered carefully.
For users of proprietary cables (integral with sensors or actuators), these users should follow those
manufacturers installation requirements.
Mitsubishi Electric recommend that shielded cables should be used. If NO other EMC protection is
provided, then users may experience temporary loss or accuracy between ±10% in very heavy industrial
areas.
However, Mitsubishi Electric suggest that if adequate EMC precautions are followed for the users
complete control system, users should expect accuracy as specified in this manual.
• Sensitive analog cable should not be laid in the same trunking or cable conduit as high voltage
cabling. Where possible users should run analog cables separately.
• Good cable shielding should be used. When terminating the shield at Earth - ensure that no earth
loops are accidentally created.
1. INTRODUCTION
The FX -2DA type analog output block (hereafter referred to as the FX
2N
digital value of 12 bits into an analog output of two points (voltage and current output), and to forward the
values to the Programmable Controller (hereafter referred to as a PLC).
FX -2DA can connected to the FX
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Programmable Controllers.
1) The analog output is selected from the voltage or current output by the method of connecting wires.
At this time, assume setting to be two channels common analog output.
2) The two analog output channels can accept outputs of 0 to 10V DC, 0 to 5V DC, or 4 to 20mA.
(A mixture of voltage/current output is possible.)
3) Resolution is 2.5mV (0 to 10V DC) and 4µA(4 to 20mA).
4) The digital to analog conversion characteristics can be adjusted.
5) The block occupies 8 I/O points which can be allocated from either the inputs or outputs.
6) The data transfer with the PLC uses the FROM/TO instructions.
FX /FX
3U 3UC
JY992D74901G
2. EXTERNAL DIMENSIONS AND PARTS
/FX /FX /
3S 3G 3GC
/FX /FX /FX /FX SERIES
2NC 3 G 3GC 3U 3 UC
3. WIRING
PLC
Remark
Extension
cable
*1 Connect a 0.1 to 0.47 µF 25V DC capacitor respective to position *1 when there is voltage
ripple in the voltage output or there is a lot of noise.
*2 For voltage output please short circuit IOUT and COM as shown in the diagram.
*3 Channel number enter
4. CONNECTION WITH PROGRAMMABLE CONTROLLER
1) The FX -2DA and main unit are connected by a cable on the right of the main unit.
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2) Up to 4 FX
FX /FX
3GC 3U
However the following limitation exists when the undermentioned special function blocks are connected.
FX : Main unit and powered extension units of 32 points I/O or less. Consumption current available
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for undermentioned special function blocks ≤ 190mA
FX : Main unit and powered extension units of I/O 48 points or more. Consumption current available
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for undermentioned special function blocks ≤ 300mA
FX : Up to 4 undermentioned special function blocks can be connected regardless of the system I/O.
2NC
FX : Main unit and powered extension units. Up to 2 undermentioned special function blocks can be
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connected regardless of the system I/O.
Consumption current of 24V DC for one unit
The consumption of the above units is to be subtracted from the service power supply of the host
PLC.
3) The blocks occupies 8 I/O points (the 8 points can be allocated from either inputs or outputs).
4) FX -2DA consumes 5V DC 30mA.
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The total 5V consumption of all special function blocks connected to either a main unit or an
extension unit must not exceed the 5V source capacity of the system.
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, FX , FX , FX , FX , FX , FX
0N 1N 2N 2NC 3G 3GC
series PLC can use direct specification of buffer memory.
Dimensions: mm (inches)
Mass (Weight): Approx. 0.2kg (0.44lbs)
Accessories: Special Function block number label
Voltage output
VOUT
+15V
IOUT
COM
DC/DC
AG
*2
converter
-15V
Current output
VOUT
IOUT
COM
*3
FX -2DA
2N
.
-2DA units can connect to the FX series PLC, up to 5 for FX
2N 0N
/FX or, up to 4 for the FX series PLC, all with powered extension units.
3UC 2NC
FX -2DA FX -2AD
2N 2N
85mA 50mA
5. SPECIFICATIONS
-2DA) is used to convert a
5.1 General specification
Item
, and the FX series
3U 3UC
Dielectric withstand
500V AC 1min (Between analog output terminals and case)
voltage
General specifications other than the above are the same as the main unit of the
Programmable Controller. (Refer to the Hardware manual of the Programmable controller)
5.2 Power supply specification and others
Item
Analog circuits 24V DC ±10% 85mA (Internal power supplied from the main unit)
Digital circuits 5V DC 30mA (Internal power supplied from the main unit)
Photo-coupler isolation between analog and digital circuits.
Isolation
(No isolation between analog channels.)
Number of occupied The blocks occupies either 8 input or output points.
I/O points (Can be either inputs or outputs)
5.3 Defining gain and offset
Item
At shipping, the unit is adjusted to a digital range of 0 to 4000 for an analog
voltage output of 0 to 10V DC. When using an FX
differing voltage output except 0 to 10V DC, it is necessary to adjust the
offset and gain.
Range of analog output
0 to 10V DC, 0 to 5V DC
(External load resistance 2K to
1MΩ)
Digital input 12bit
2.5mV: 10V/4000(At shipment)
Resolution Change depending on the output
characteristic.
Integrated accuracy ± 0.1V
Processing time 4ms/1 channel (synchronized to be sequence program)
Analog value
Digital value
Inverter
*1
etc
Output characteristics
Recorder
etc
If a digital source data of greater than 12 bits is used, only the lower 12 bits
will be valid. Additional (upper) bits will be ignored
Use a digital value within the range from 0 to 4095.
The output characteristic can be set to each of the two channels.
6. ALLOCATION OF BUFFER MEMORY (BFM)
6.1 Buffer memory
up to 8 for FX /FX /
1N, 2N 3G
BFM
b15 to b8
number
#0 to #15
#16 Reserved
#17 Reserved
#18 or more
BFM#16: The D/A conversion data of the channel specified with BFM#17 (digital value) is written.
FX -3A
0N
The D/A data is written in binary in order of the lower 8bit and higher 4bit and divided into two
portions.
90mA
BFM#17: b0•••The D/A conversion of CH2 begins by changing of 1→0.
b1•••The D/A conversion of CH1 begins by changing of 1→0.
b2•••The lower eight bit data for the D/A conversion is held by changing of 1→0.
Write data in the above-mentioned buffer memory by "8. Program example".
Content
Content
Voltage output Current output
-2DA for current or
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4 to 20mA
(External load resistance 400Ω or
less)
4µA: (20-4)A/4000
Change depending on the output
characteristic.
± 0.16mA
Analog value :4 to 20mA
:0 to 10V at
Digital value :0 to 4000
:0 to 4000 shipment
10.238V 20.380mA
20mA
10V
4mA
0 4000 0 4000
Digital value Digital value
b7 to b3 b2 b1
Reserved
Digital source data for output (8 bit)
CH1 D/A CH2 D/A
Lower data holding
conversion conversion
bit
beginning beginning
Reserved
b0