M-system Mini-M M2XU User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5008 Rev.7 P. 1 / 4
INSTRUCTION MANUAL
Mini-M™
UNIVERSAL TRANSMITTER
(PC programmable) MODEL M2XU
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 + base socket + input resistor + 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
■NONINCENDIVE APPROVAL OPTION
• This equipment is suitable for use in Class I, Div. 2,
Groups A, B, C and D or Non-Hazardous Locations only.
• WARNING! Before You Remove the Unit from Its Base
Socket or Mount It, Turn Off the Power Supply and Input
Signal for Safety.
• WARNING! – Explosion Hazard –
Substitution of Components May Impair Suitability for
Class I, Div. 2.
• WARNING! – Explosion Hazard –
Do Not Disconnect Equipment Unless Power Has Been
Switched Off or The Area is Known To Be Non-Hazardous.
• The equipment was evaluated for use in the ambient tem-
perature and relative humidity as mentioned in ‘ENVI-
RONMENT’ section.
• The input and output wiring must be in accordance with
Class I, Div. 2 wiring methods and in accordance with the
authority having jurisdiction for use in these hazardous
locations.
■CONFORMITY WITH EU DIRECTIVES OR UL
• This equipment is suitable for Pollution Degree 2 and In-
stallation Category II (transient voltage 2500V). Rein-
forced insulation (signal input or output to power input:
300V) and basic insulation (signal input to output: 300V)
are maintained. Prior to installation, check that the insu-
lation class of this unit satisfies the system requirements.
• The equipment must be mounted inside a suitable fire
enclosure.
• Altitude up to 2000 meters.
• The equipment must be mounted inside a panel.
• Risk of Electrical Shock: The front cover of the panel is to
be opened only by qualified service personnel.
• The equipment must be installed such that appropriate
clearance and creepage distances are maintained to con-
form to CE/UL requirements. Failure to observe these
requirements may invalidate the CE/UL conformance.
• The actual installation environments such as panel con-
figurations, connected devices, connected wires, may af-
fect the protection level of this unit when it is integrated
in a panel system. The user may have to review the CE
requirements in regard to the whole system and employ
additional protective measures to ensure the CE conform-
ity.
• Install lightning surge protectors for those wires connect-
ed to remote locations.
■POWER INPUT RATING & OPERATIONAL RANGE
• Locate the power input rating marked on the product and
confirm its operational range as indicated below:
100 – 240V AC rating: 85 – 264V (90 – 264V for UL),
47 – 66 Hz, approx. 6VA
24V DC rating: 24V ±10%, approx. 3W
110V DC rating: 85 – 150V (110V ±10% for UL), approx. 3W
■WARNING!
• To protect very delicate components contained inside
the unit against damage from static electricity, wear a
grounded wrist strap when handling them. If you do not
have one, touch both of your hands to a safely grounded
object or to a metal object.
• Ensure that the power supply and input signal are
switched off before you plug in or remove the unit.
■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 -30 to +60°C
(-22 to +140°F) with relative humidity within 30 to 90%
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 20 minutes is required for
satisfying complete performance described in the data
sheet.
• With voltage output, do not leave the output terminals
shortcircuited for a long time. The unit is designed to
endure it without breakdown, however, it may shorten ap-
propriate life duration.

M2XU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5008 Rev.7 P. 2 / 4
COMPONENT IDENTIFICATION
Input Resistor
CJC Sensor
Model
Body Base Socket
Input Range
Selector
Connection
Diagram
Specifications
Fixing Screw
INSTALLATION
Loosen the fixing screw at the front of the unit in order to
separate the body from the base socket.
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
■DIN RAIL MOUNTING
Set the base socket so that
its DIN rail adaptor is at
the bottom. Position the
upper hook at the rear side
of base socket on the DIN
rail and push in the lower.
When removing the socket,
push down the DIN rail
adaptor utilizing a minus
screwdriver and pull.
■WALL MOUNTING
Refer to “EXTERNAL DIMENSIONS.”
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the side of the unit.
For a DC current input, attach the input resistor (model: REM2) together with input wiring to the input screw terminals.
For a thermocouple input, attach the CJC sensor (model: CJM) together with input wiring to the input terminals. The CJC
sensor is not interchangeable. Check that its serial number is the same as that of the unit.
■EXTERNAL DIMENSIONS unit: mm (inch)
5
9
21.5 (.85)
70.5 (2.78)
86.7 (3.41)7.3 (.29) 15 (.59)
6 (.23)
59 (2.32)
DIN RAIL
35mm wide
[4 (.16)]
8–M3
SCREW
72 (2.83)
23 (.91)
2–4.2x5
(.17x.20)
MTG HOLE
6 (.24) deep
116.7 (4.59)
• When mounting, no extra space is needed between units.
14
8
12
14 13
4 (.16)
■CONNECTION DIAGRAM
A
B
B
+
–
3
2
1
max.
min.
+
–
1
OUTPUT
4
5
8
9
12
U(+)
V(–)
POWER
13
14
*Input shunt resistor attached for current input.
CONFIGURATOR JACK
POT.DC RTD
+
–
+
–
T/C
CJC
SENSOR
(model: CJM)
ext. wire
red
black
+
–
*
R
■TERMINAL ASSIGNMENTS unit: mm (inch)
58
9 12
14 13
INPUT RESISTOR
(model: REM2)
19 (.75)
14
9 12
14 13
CJC SENSOR
(model: CJM)
14 (.55)
1 14
58
redblack
Use the input resistor (model: REM2) for a DC current in-
put, and the CJC sensor (model: CJM) for a thermocouple
input, both included in the package.

M2XU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5008 Rev.7 P. 3 / 4
WIRING INSTRUCTIONS
■SCREW TERMINAL
Torque: 0.8 N·m
■SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm2(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Input range selector: Check that the switch is at the ap-
propriate position according to the input range model
suffix code.
3) Power input voltage: Check voltage across the terminal
13 – 14 with a multimeter.
4) Input: Check that the input wires are correctly connect-
ed to the input terminals according to the selected input
type.
5) Output: Check that the load resistance meets the de-
scribed specifications.
6) Status indicator LED: Check that it blinks in a regular
pattern.
HARDWARE ADJUSTMENTS
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, fine zero and span adjustments can
be done to ±5% by pressing UP/DOWN switches enabled
with the zero/span selector switch. Calibrated values are
stored in the non-volatile memory, which will not be lost
even when you turn off power supply to the unit.
Zero and span are respectively set to 0% and 100% at the
factory.
UP/DOWN Switches
The front cover cannot be opened to 180 deg.
when flush with neighboring units.
Configurator Jack
■ FRONT VIEW (with cover open)
■ RIGHT SIDE VIEW
Status Indicator LED
Zero/Span Selector
Top: SPAN
Middle: OFF
Bottom: ZERO
Input Range Selector
Position H
Position L
: code S2, Z1
: other
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
(Incrementing speed will be doubled when the switch is
held down.)
UP: Pressing UP increases adjusted values.
DOWN: Pressing DOWN decreases adjusted values.
■HOW TO RESET
You can reset manually calibrated zero and span to their ex-
factory state by pressing both UP/DOWN switches at once.
■HOW TO CALIBRATE ZERO/SPAN
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 20 minutes.
1) ZERO: Apply 0% input. Slide the Zero/Span Selector to
the bottom position. Press the UP or DOWN switches
and adjust output to 0%.
2) SPAN: Apply 100% input. Slide the Zero/Span Selector
to the top position. Press the UP or DOWN switches and
adjust output to 100%.
3) Check ZERO adjustment again with 0% input.
4) The ZERO and SPAN adjustments are processed in a
digital processor, and therefore do not interact. However,
if ZERO value is changed, repeat the above procedure 1)
– 3).
■HOW TO CANCEL RESISTANCE IMBALANCES BETWEEN
RTD LEADWIRES
Resistance imbalances between RTD leadwires can be can-
celled by manipulating the Zero/Span Selector and UP/
DOWN switches.
1) Press and hold down the DOWN switch. Switch the
Zero/Span Selector to the bottom position and release
the DOWN switch. Check that the status indicator LED
which was blinking has turned ON.
2) Press the DOWN switch once and release to cancel any
resistance imbalances.
3) Return the Zero/Span Selector to the middle position.
The status indicator LED will start blinking again.
■HOW TO CAPTURETHE POTENTIOMETER’S ZERO/SPAN
Particular positions of the potentiometer can be captured
(stored in memory) as ZERO (0%) or SPAN (100%) points by
manipulating Zero/Span Selector and UP/DOWN switches.
ZERO
1) Press and hold down the DOWN switch. Switch the
Zero/Span Selector to the bottom position and release
the DOWN switch. Check that the status indicator LED
which was blinking has turned ON.
2) Press the DOWN switch once and release to capture zero.
3) Return the Zero/Span Selector to the middle position.
The status indicator LED will start blinking again.
SPAN
1) Press and hold down the DOWN switch. Switch the Zero/
Span Selector to the top position and release the DOWN
switch. Check that the status indicator LED which was
blinking has turned ON.
2) Press the DOWN switch once and release to capture
span.
3) Return the Zero/Span Selector to the middle position.
The status indicator LED will start blinking again.

M2XU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5008 Rev.7 P. 4 / 4
I/O RANGE SELECTOR
PC Configurator Software is used to change input and out-
put specifications.
For the input codes S2 and Z1, the input range selector
switch must be positioned to the H side. Check the switch
position before you attempt to change the input type and
calibration range.
■INPUT RANGE SELECTOR
INPUT TYPE SWITCH POSITION
S2: -10 to +10V DC H
Z1: 0 to 50mA DC H
All others L
UP/DOWN Switches
The front cover cannot be opened to 180 deg.
when flush with neighboring units.
Configurator Jack
■ FRONT VIEW (with cover open)
■ RIGHT SIDE VIEW
Status Indicator LED
Zero/Span Selector
Top: SPAN
Middle: OFF
Bottom: ZERO
Input Range Selector
Position H
Position L
: code S2, Z1
: other
STATUS INDICATOR LED
The M2XU 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.
When the unit is in an abnormality, it blinks in particular
patterns repeating approximately in 1.3 seconds.
The following figure indicates typical patterns. A white
circle means that the light is OFF for 80 millisec., while a
black one means ON for 80 millisec.
Running mode
Burnout
MAINTENANCE
Regular calibration procedure is explained below:
■CALIBRATION
Warm up the unit for at least 20 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 “HARD-
WARE ADJUSTMENT” 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.