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Mitsubishi Electric FX2N-4AD User Manual

Special function block
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FX
-4AD SPECIAL FUNCTION BLOCK
2N
This manual contains text, diagrams and explanations which will guide the reader in the correct installation
and operation of the FX
-4AD and should be read and understood before attempting to install or use the
2N
unit.
Further information can be found in the FX SERIES PROGRAMMING MANUAL(ΙΙ), FX
FX
SERIES HARDWARE MANUAL.
2NC
Guidelines for the Safety of the User and Protection of the FX
special function block.
This manual should be used by trained and competent personnel. The definition of such a person or
persons is as follows:
a) Any engineer using the product associated with this manual, should be of a competent nature,
trained and qualified to the local and national standards. These engineers should be fully aware of
all aspects of safety with regards to automated equipment.
b) Any commissioning or service engineer must be of a competent nature, trained and qualified to
the local and national standards.
c) All operators of the completed equipment should be trained to use this product in a safe and
coordinated manner in compliance to established safety practices.
Note: The term 'completed equipment' refers to a third party constructed device which contains or uses
the product associated with this manual.
Notes on the Symbols Used in this Manual
At various times throughout this manual certain symbols will be used to highlight points of information
which are intended to ensure the users personal safety and protect the integrity of equipment.
1) Indicates that the identified danger WILL cause physical and property damage.
2) Indicates that the identified danger could POSSIBLY cause physical and property
damage.
Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage
that may arise as a result of the installation or use of this equipment.
All examples and diagrams shown in this manual are intended only as an aid to understanding the
text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for the actual use of
the product based on these illustrative examples.
Owing to the very great variety in possible application for this equipment, you must satisfy yourself as
to its suitability for your specific application.
1. INTRODUCTION
The FX
-4AD analog special function block has four input channels. The input channels receive analog signals and
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convert them into a digital value. This is called an A/D conversion. The FX
The selection of voltage or current based input/output is by user wiring. Analog ranges of -10 to 10V DC (resolution:
5mV), and/or 4 to 20mA, -20 to 20mA (resolution: 20 µA) may be selected.
The FX
-4AD can be connected to the FX
, FX
, FX
, and the FX
2N
0N
1N
2N
Data transfer between the FX
-4AD and the main unit is by buffer memory exchange. There are 32 buffer memories
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(each of 16 bits) in the FX
-4AD.
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The FX
-4AD occupies 8 I/O points on the FX
expansion bus. The 8 I/O points can be allocated from either inputs
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2N
or outputs. The FX
-4AD draws 30mA from the 5V rail of the main unit or powered extension unit.
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2. EXTERNAL DIMENSIONS
Weight : Approx. 0.3 kg (0.66 lbs)
8 7 ( 3 . 4 3 )
5 5 ( 2 . 1 7 )
4 ( 0 . 1 6 )
M o u n t i n g h o l e s
4 . 5 m m ( 0 . 1 8 ) d i a .
D I N r a i l
M o u n t i n g s l o t
3 5 m m ( 1 . 3 8 )
E x t e n s i o n c a b l e
9 ( 0 . 3 5 )
4 ( 0 . 1 6 )
a n d c o n n e c t o r
3. WIRING
Voltage input
-10V to +10V
1
Shielded
USER'S GUIDE
Current input
-20mA to +20mA
JY992D65201C
1
Shielded
DC24V 55mA
/FX
/FX
/
0N
1N
2N
Grounding
-4AD
2N
(100! or less)
PLC
4. CONNECTION WITH PLC
1) Up to 4 FX
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to 4 for an FX
However the following limitation exists when the undermentioned special function blocks are
connected.
FX
:
Main unit and powered extension units of 32 I/O points or less. Current consumption
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available for the undermentioned special function blocks ≤ 190mA
FX
:
Main unit and powered extension units of 48 I/O points or more. Current consumption
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available for the undermentioned special function blocks ≤ 300mA
FX
: Up to 4 undermentioned special function blocks can be connected regardless of the system
2NC
I/O.
When using an FX
FX
/
: Main unit and powered extension units. Up to 2 undermentioned special function blocks can
0N
1N
be connected regardless of the system I/O.
2) Each block occupies 8 I/O points (The 8 points can be allocated from either inputs or outputs).
3) FX
-4AD consumes 30mA from the 5V DC bus.
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The total 5V consumption of all special function blocks connected to either the FX
unit or FX
extension unit must not exceed the 5V source capacity of the system.
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4) The FX
-4AD and main unit are connected by a cable on the right of the main unit.
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5. SPECIFICATIONS
5.1 Environmental specification
Environmental specifications
Dielectric withstand voltage
5.2 Performance specification and others
-4AD has maximum resolution of 12 bits.
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Item
Analog circuits
series Programmable Controllers (PLC).
2NC
Digital circuits
Isolation
Dimensions : mm (inches)
Number of occupied I/O points
5 5 ( 2 . 1 7 )
P O W E R
2 4 V
A / D
2 4 V L E D
A / D L E D
T e r m i n a l s c r e w s M 3 ( 0 . 1 2 )
!
The analog input is received through a twisted pair
CH4
100K!
shielded cable. This cable should be wired separately
V +
250!
CH4
from power lines or any other lines which may induce
2
I +
VI-
electrical noise.
100K!
F G
"
AG
If a voltage ripple occurs during input, or there is
CH1
electrically induced noise on the external wiring,
100K!
V +
connect a smoothing capacitor of 0.1 to 0.47 µF, 25V.
250!
CH1
3
I +
VI-
#
100K!
If you are using current input, connect the V+ and I+
F G
terminals to each other.
4
+15V
$
24+
If there is excessive electrical noise, connect the FG
DC/DC
5
AG
(frame ground) terminal with the grounded terminal on
converter
24-
-15V
the FX
-4AD. (In CH1, there is no FG terminal. Use
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FG terminal of other channels.)
FX
-4AD
2N
%
Connect the ground terminal on the FX
Analog Input Block
with the grounded terminal on the main unit. Use
Extension cable
grounding on the main unit, if available.
-4AD units can connect to the FX
series PLC, up to 5 for FX
0N
1N
series PLC, all with powered extension units.
2NC
, an FX
-CNV-IF is required.
2NC
2NC
Item
Specification
Same as those for the main unit
500V AC, 1min (between all terminals and ground)
Specification
24V DC ± 10%, 55mA
(external power supply from the main unit)
5V DC, 30mA
(internal power supply from main unit)
Photo-coupler isolation between analog and digital circuits.
DC/DC converter isolation of power from the main unit.
No isolation between analog channels.
The analog block occupies 8 points.
(can be either inputs or outputs)
Industrial automation
Elincom Group
European Union: www.elinco.eu
Russia: www.elinc.ru
5.3 Performance specification
Analog Inputs
Voltage input
Item
Either voltage or current input can be selected with your choice of input terminal.
Up to four input points can be used at one time.
DC -10V to +10V
Analog input
(input resistance: 200kΩ).
range
Warning: this unit may be damaged by an
input voltage in excess of ± 15V.
12-bit conversion stored in 16-bit 2's complement form.
Digital output
Maximum value: +2047 Minimum value: -2048
Resolution
5mV (10V default range 1/2000)
Overall
± 1% (for the range of -10V to +10V)
accuracy
-4AD unit
Conversion
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15ms/channel (Normal speed), 6ms/channel (High speed)
speed
Analog Inputs continued...
Preset 0 (-10V to +10V)
, up to 8 for FX
or, up
2N
+2,047
+2,000
Digital output
-10V
+10V
Voltage input
-2,000
-2,048
NOTE: Preset ranges are selected by an appropriate setting in the buffer memory of the analog block.
Current/Voltage input selection must match the correct input terminal connections.
6. ALLOCATION OF BUFFER MEMORIES (BFM#)
or FX
main
2N
2NC
6.1 Buffer memories
BFM
*#0
Channel selection Default = H0000
*#1
Channel 1
*#2
Channel 2
*#3
Channel 3
*#4
Channel 4
#5
Channel 1
#6
Channel 2
#7
Channel 3
#8
Channel 4
#9
Channel 1
#10
Channel 2
#11
Channel 3
#12
Channel 4
#13 - #14
Reserved
Selection of A/D
#15
conversion speed
see note 2
#16 - #19
Reserved
*#20
Reset to Defaults and Preset.
*#21
Offset, Gain Adjust Prohibit.
*#22
Offset, Gain Adjust
*#23
Offset Value
*#24
Gain Value
#25 - #28
Reserved
#29
Error status
#30
Identification code K2010
#31
Cannot be used
Current input
DC -20mA to +20mA
(input resistance: 250Ω).
Warning: this unit may be damaged by an
input currents in excess of ± 32mA.
20µA (20mA default range 1/1000)
± 1% (for the range of -20mA to +20mA)
Preset 1 (+4mA to +20mA)
Preset 2 (-20mA to +20mA)
+1,750
+1,600
Digital
output
+1,000
+1,000
-20mA
+20mA
Digital
output
-1,000
0
+4mA
+20mA
-1,600
Current input
Current input
Contents
Contains the number of samples (1 to 4096) to be used for an
averaged result.
The default setting is 8- normal speed. High speed operation
can be selected with a value of 1.
These buffer memories contain the averaged input values for
the number of samples entered for the channel in buffer
memories #1 to #4 respectively.
These buffer memories contain the present value currently
being read by each input channel.
When set to 0, a normal speed is selected of 15ms/ch (default)
When set to 1, a high speed is selected of 6ms/ch
Default = 0
Default = (0, 1) Permit
b7
b6
b5
b4
b3
b2
b1
b0
G4
O4
G3
O3
G2
O2
G1
O1
Default = 0
Default = 5,000

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  Summary of Contents for Mitsubishi Electric FX2N-4AD

  • Page 1 All examples and diagrams shown in this manual are intended only as an aid to understanding the averaged result. text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for the actual use of The default setting is 8- normal speed. High speed operation Channel 3 5.1 Environmental specification...
  • Page 2 8.2 Using gain and offset in a program In buffer memory locations (BFMs) marked with an “*” data can be written from the PLC using the TO 5) Identification Code BFM #30 instruction. The identification (or ID) code number for a Special Function Block is read using the FROM The following is an example of changing the offset value on input channel CH1 to 0V and the gain value to For buffer memories (BFMs) without “*”...