Mitsubishi FX-2AD-PT User Manual

AMITSUBISHI
Miscellaneous
-
Item
Specification
Photo-coupler Isolation between analog and digital CIrcults.
No lsolatlon between analog channels
8 points taken from the FX expansion bus
(can be either inputs or outputs)
Isolation DC/DC converter isolation of power from FX MPU.
Number of occupied I/O points
-
2.1
Uslna crlmn tormlnatlonr
less than
0
Use crimp terminations of the type indicated on the left.
6.8mm (0
27)
Use M3 5 (0.l4)
and 8 ka
.
cm.
Secure the termination using a tightening torque of between
5
PROGRAMMABLE CONTROLLERS
LK!msEE.F
-
less than
6
8mm
(0
27)
0
Wire only to the module terminals discussed in this manual. Leave
- -
FX-QAD'&PT
.
SPECIAL;
. .
FUNCTION
, .
BLOCK
USER'S GUIDE
JY992D55701A
all others vacant.
Thls manual contains text, diagrams and explanations which w~ll guide the reader in the correct installation
and operation of the FX-2AD-PT special function block and should be read and understood before attempting
to install or use the unit.
MANUAL.
Further informatton can be found in the FX PROGRAMMING MANUAL and FWFX2c SERIES HARDWARE
a
B
INTRODUCTION
El I 1
INSTALLATION NOTES AND USAOE
I
3.4
Buffor momory asslanmont
I
EFM
I
I
The FX-2AD-PT communicates with the
programmable controller through use of buffer
memories.
r ofsamples for averaging
=
8 Range = 1 to 4096
3.1 Oonorrl r~ocWlcatlon
Item
Same as those for the FX base unit General specifications
Specification
The FX-PAD-PT analog block amplifies the input from two platinum temperature sensors (PT 100,
3 wire, 100 R ) and converts the data into 12 bit reading's stored in the Main Processing Unit (MPU).
Both Centigrade (C) and Fahrenheit (OF) can be read. Reading resolution is 0.2'C/0.36'F.
All data transfers and parameter setups are adjusted through software control of the FX-2AD-PT ; by
use of the TOIFROM applied instructions in the FX PC.
Note : FX programmable controllers versions 2.0 or later (those with serial number 13XXXX or larger)
are required as these units have the TO/FROM applied instructions In their instruction set. All
F X x Models may be used.
The FX-2AD-PT occupies 8 points of I/O on the FX expansion bus. The 8 points can be allocated from
either inputs or outputs. The FX-PAD-PT draws 30mA from the 5V rail of the MPU or powered extension
unit.
# 5
PresenVCurrent temperature
CHI # g
in unlts of 0.1 ' C
CH2 6 6
Averaged temperature CHI
BFMs
#0,
#3,
#4, #7, #8,
#11, #12, #15, #16.
#19 to
#28
and #31 are reserved.
For BFMs wlthout the
" "
mark, data can be
read by the programmable controller using the
FROM command.
110
in units of 0.1%
CHZ
113
CH2 #14
Averaged temperature
CHI
in units of 0.1.F
3 . 2
Power SUDDIY r~oolflcrtlon
Item
Digital circuits
24V DC
k
lo%, 50mA
Analog circuits
Specification
5V DC, 30mA
(internal power supply from base unit)
BFMs (buffer memories) marked with an
" "
can be written to from the programmable
controller usmg the TO command.
(1) FFMs #9, #10 and #17, #18 store the current value of the input data. Thls value is in untts of 0.1 'c or
0.1
F, but the resolution is only 0.2% or 0.36.F.
(2) A number of recently converted readings are averaged to give a smoother read out. The averaged data
is stored in BFMs #5, #6 and #13, #14.
(3) The number of samples to be averaged are assigned in BFMs #1 and #2. Only the range 1 to 4096 is
valid. Values outside this range are ignored. The default value of 8 is used.
1.1 Extornal dlmenslonr
3 . 3
Performance r~oclflcatlonr
Weight : Approx. 0.5kg (1.1 Ibs) Dimensions : mm (inches)
Analoa h u t s
Centigrade
I
Fahrenhelt
Item
Both 'c and 'F readlngs are available by reading
M3 5 (0.14)
A
Any connectcon to these terminals
may damage the FX-PAD-PT.
Mountcng holes
i l the appropriate buffer memory area.
Platinum temperature PT 100 sensors (100 R ), 3-wire,
2channel (CHl,CH2), 3850 PPMIY: (DIN 43760, JIS C1604-1989)
Analog Input signal
Current to s e n o r
1mA. sensor: 100 R PT 100
Compensated range
-1
00C
to +600'c
I
-1°F t0+1112"F
-1 OOO to
* O O o
-1480
to +11120
12-bit conversion
11
data bits +1 sign bit
-see section 7.0 for special EMC considerations
+-
1
H
full scale (compensated range)
Dlgltal output
Minimum resdvaMe temp.
0.2c
I
0.36.F
Overall accuracy
Conversion speed
15 ms for 2 channels
-
3.5
Status lnformrtlon
(1) Identification Code Buffer Memory BFM #30
DIN rad
mounting slot
The identification code or ID number for a Special Block is read from buffer memory BFM #30 using the
FROM command.
Thls number for the FX-2AD-PT unit is K2020.
The programmable controller can use this facility in its program to identify the special block before commencing
data transfer from and to the special block.
Analoa Inmtr cont
(2) Status Information Buffer Memory BFM #29
TERMINAL LAYOUTS
I
Bit devices of BFM #29
AJD
conversion
is stopped b
0
: Error
OFF ON
No error
When any of b l to b3 is ON
' 1
:
The cable of the PT 100 sensor or a twisted shielded
cable should be used for the analog input cable.
This analog input cable should be wired separately
from power hnes or any other lines whlch may induce
noise.
The three wire method improves the accuracy of
the sensors by compensating voltage drops.
"2
*
If
there is electrical noise, connect the frame gioufid
terminal (FG) with the ground terminal.
.
' 3 : Connect the ground terminal on the FX-PAD-PT unit
with the grounded terminal on the base unit. Use
class 3 grounding on the base unit, if grounding
IS
possible.
'4
: Either an external or the 24V built-In supply in the
programmable controller may be used.
For additional data regarding EMC consideratlons
please see section 7.0.
I
for the error channel
b 1 : Reserved
Reserved
1
Reserved
I
Conversion
Characteristics
Oillal
output
-1480
I
b 2 : Power source
I
DC 24V power supply fallure
j
power supply ncrma!
I
b 3 : Hardware error
AJD converter or
other hardware failure
Hardware normal
I
l b 4 t o b 9 :Reserved
I
Reserved Reserved
E
~~ ~
b10 : Digltal range error
Digital output/analog input value is outslde
the speclfied range.
Digltal output value
IS
normal.
Selected number of averaged results is
b l 1 : Averaging error
Reserved
i
Reserved b12 to b15 : Reserved
and #2.
outslde the available range -see BFM
#1
Averaging is normal.
(between 1 and 4096)