M-system M8XT2 Manual de usuario
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
EM-5470 Rev.4 P. 1 / 4
INSTRUCTION MANUAL
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■PACKAGE INCLUDES:
Signal conditioner (body + CJC sensor).............................(1)
■MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
The unit is programmable using the PC Configurator Soft-
ware. For detailed information on the PC configuration,
refer to the JXCON users manual. The JXCON PC Con-
figurator Software is downloadable at M-System’s web site:
http://www.m-system.co.jp.
POINTS OF CAUTION
■POWER INPUT RATING & OPERATIONAL RANGE
• Locate the power input rating marked on the product and
confirm its operational range as indicated below:
24V DC rating: 24V ±10%, approx. 50mA
(70mA for current output)
■GENERAL PRECAUTIONS
• Before you remove the unit or mount it, turn off the power
supply and input signal for safety.
■ENVIRONMENT
• Indoor use.
• When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.
• Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
• Environmental temperature must be within 0 to 55°C (32
to 131°F) with relative humidity within 30 to 95% RH in
order to ensure adequate life span and operation.
• Be sure that the ventilation slits are not covered with ca-
bles, etc.
■WIRING
• Do not install cables close to noise sources (relay drive
cable, high frequency line, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■AND ....
• The unit is designed to function as soon as power is sup-
plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.
COMPONENT IDENTIFICATION
CJC Sensor
Specifications Mounting Screw
Body
INSTALLATION
Use Installation Base (model: M8BSx).
THERMOCOUPLE CONVERTER
(PC programmable) MODEL M8XT2
M8XT2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
EM-5470 Rev.4 P. 2 / 4
TERMINAL CONNECTIONS
Connect the unit as in the diagram below.
Attach the CJC sensor together with input wiring to the input terminals. The CJC sensor is not interchangeable. Check that
its serial number is identical to that of the unit.
■EXTERNAL DIMENSIONS unit: mm (inch)
I/O PINS
17.5 (.69)
48 (1.89)
75 (2.95)
83 (3.27)
■CONNECTION DIAGRAM
+
–
Installation Base
OUTPUT 1
6
7
8
9
10
11
+
–
+
–
OUTPUT 2
A
POWER
3
1
2
4
B
C
+
–
T / C
CJC
SENSOR
metal leg
model: CJM
comp. leadwire
+
–
green
red
CONFIGURATOR JACK
D
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) DIP switches: Check the output range selector setting.
3) Power input: Check the power input voltage.
4) Input: Check that the input signal is within 0 – 100% of
the full-scale.
If the thermocouple or its extension wires are broken, the
output goes over 100% (below 0% with downscale) due to
burnout function. Confirm the status indicator LED pat-
tern and check leadwires in such a case.
5) Output: Check that the load resistance meets the de-
scribed specifications.
6) Status indicator LED: Check that it blinks in a regular
pattern.
M8XT2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
EM-5470 Rev.4 P. 3 / 4
CALIBRATION
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any cali-
bration.
For matching the signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
■ZERO/SPAN & UP/DOWN SWITCHES
Fine zero and span adjustments can be done with the ZERO/
SPAN Selector and UP/DOWN switches. Calibrated values
are stored in the non-volatile memory, which will not be lost
even when you turn off power supply to the unit.
The output 1 and output 2 can be independently adjustable.
Zero and span are respectively set to 0% and 100% at the
factory, and field calibration can be reset to ex-factory set-
ting if necessary.
Adjustable range: ±5%
Zero/Span Selector
ZERO: UP/DOWN switches usable for zero adjustment.
OFF: UP/DOWN switches unavailable.
SPAN: UP/DOWN switches usable for span adjustment.
UP/DOWN Switches
UP: Pressing UP increases adjusted values.
DOWN: Pressing DOWN decreases adjusted values.
■FRONT VIEW
UP Switch
Status Indicator LED
Configurator Jack
DOWN Switch
■BOTTOM VIEW
Zero/Span Selector
SZ
OFF
Z
S
Zero/Span Selector
MODE SW POSITION
SPAN S
OFF ■
ZERO Z
■HOW TO CALIBRATE THE ZERO & SPAN
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
The output 1 and output 2 adjustments are linked except
for (2) and (6).
1) Apply 0% input.
2) Select the Output 1 Zero: Slide the Zero/Span Selector to
the position Z.
Select the Output 2 Zero: Slide the Zero/Span Selector to
the position Z while pressing UP switch.
3) Press UP or DOWN switch and adjust the output to 0%.
Incrementing speed will be doubled when you keep press-
ing a switch.
4) Put the Zero/Span Selector back to the position OFF.
5) Apply 100% input.
6) Select the Output 1 Span: Slide the Zero/Span Selector to
the position S.
Select the Output 2 Span: Slide the Zero/Span Selector to
the position S while pressing UP switch.
7) Press UP or DOWN switch and adjust the output to
100%. Incrementing speed will be doubled when you
keep pressing a switch.
8) Put the Zero/Span Selector back to the position OFF.
9) Check Zero and Span adjustments again with 0% and
100% input respectively.
10) If the output value is changed, repeat the above proce-
dure (1) – (9).
■HOW TO RESET
After you calibrated manually with these switches, you
can reset them to its ex-factory state by pressing both UP/
DOWN switches at once.
M8XT2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
EM-5470 Rev.4 P. 4 / 4
I/O RANGE MODIFICATION
Configurator Software is used to change input types and
ranges.
For changing output ranges, set the Output Range Selector
and then select by Configurator Software.
■SIDE VIEW
Output Range Selector
V
I
I
V
I
Output Range Selector
OUTPUT RANGE SW POSITION
V2Z1: -10 – +10 V / 0 – 20 mA DC I
V2V2: -10 – +10 V / -10 – +10 V DC V
STATUS INDICATOR LED
The unit is provided with a status indicator LED which
blinks in different patterns indicating various status of its
CPU. When it is functioning within normal parameters, the
LED blinks in a regular pattern of ON and OFF.
The following figure indicates typical patterns.
LED PATTERNSSTATUS
Normal
Programming Mode
Out. 1 Calibration Mode
Out. 2 Calibration Mode
Burnout
100 ms ON OFF
MAINTENANCE
Regular calibration procedure is explained below:
■CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the output
signal for the respective input signal remains within accu-
racy described in the data sheet. When the output is out of
tolerance, recalibrate the unit according to the “CALIBRA-
TION” explained earlier.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
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