M-system M2EXM User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 1 / 19
OPERATING MANUAL
Mini-M™
POTENTIOMETER TRANSMITTER
(PC programmable) MODEL M2EXM
CONTENTS
BEFORE USE ............................................................................................................... 2
POINTS OF CAUTION...................................................................................................... 2
COMPONENT IDENTIFICATION .......................................................................................... 2
INSTALLATION ............................................................................................................. 3
TERMINAL CONNECTIONS ............................................................................................... 3
EXTERNAL VIEWS ......................................................................................................... 4
DIP SWITCH ................................................................................................................ 4
SCREEN DISPLAY.......................................................................................................... 5
PROGRAMMING ........................................................................................................... 6
ERROR MESSAGES...................................................................................................... 18
WIRING INSTRUCTIONS................................................................................................ 18
CHECKING ................................................................................................................ 18
MAINTENANCE ........................................................................................................... 19
LIGHTNING SURGE PROTECTION ..................................................................................... 19

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 2 / 19
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).............................(1)
■MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■OPERATING MANUAL
This manual describes detailed operation regarding set-
tings.
The M2EXM is programmable using a PC. For detailed in-
formation on the PC configuration, refer to the M2ECFG
users manual (EM-5147).
The M2ECFG Configurator Software is downloadable at M-
System’s web site: http://www.m-system.co.jp
POINTS OF CAUTION
■CONFORMITY WITH EU DIRECTIVES
• 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.
• Altitude up to 2000 meters.
• The equipment must be mounted inside a panel.
• The equipment must be installed such that appropriate
clearance and creepage distances are maintained to con-
form to CE requirements. Failure to observe these re-
quirements may invalidate the CE 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, 47 – 66 Hz,
≤ 4.5VA at 100V AC
≤ 6.5VA at 200V AC
≤ 8.5VA at 264V AC
24V DC rating: 24V ±10%, ≤ 2.3W
110V DC rating: 85 – 150V, ≤ 2.3W
■GENERAL PRECAUTIONS
• Before you remove the unit from its base socket 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 -5 to +55°C
(23 to 131°F) with relative humidity within 10 to 85% 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.
• 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.
• The edge of the display may be hidden by the frame and
invisible depending on the view angle.
COMPONENT IDENTIFICATION
Connection Diagram
(Side)
Body Base Socket
Display
Fixing Screw
(screw for attaching
the body to the socket)
Mode
Set
Up
Down
Specification

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 3 / 19
INSTALLATION
Loosen the fixing screw in front of the unit in order to separate the body from the base socket.
■FIXING SCREW
The fixing screw can be pushed into the body when it is not
in use. Tighten the knob until the body is securely attached
to the base socket. Push it into the body and turn it clock-
wise to lock. Push the knob and turn it counterclockwise to
unlock so that the knob pops out.
■
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.
■EXTERNAL DIMENSIONS unit: mm (inch)
29 (1.14)
83 (3.27)
94 (3.70)
8
(.31)
124 (4.88)
22 (.87)
6 (.23)
59 (2.32)
11–M3
SCREW
72 (2.83)
36 (1.42)
29.5 (1.16)
2–4.2x5
(.17x.20)
MTG HOLE
6 (.24) deep
DIN RAIL
35mm wide
[4 (.16)]
• When mounting, no extra space is needed between units.
4
8 7
10
8
(.31)
11
56
123
9
■CONNECTION DIAGRAM
+
–
U(+)
V(–)
1
4
2
CONFIGURATOR JACK
7
8
OUTPUT
10
11
POWER
+
–
3
2
1
POTENTIOMETER
max.
min.

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 4 / 19
EXTERNAL VIEWS
Display
Mode Button
Set Button
Configurator Jack
Up Button
Down Button
Up
Down
Mode
Set
Output Setting DIP SW
ON
1
2
3
4
5
6
7
8
SW1
OFF
ON
1
2
3
4
5
6
7
8
SW1
OFF
PERCENT
100.00
OUTPUT
20.000
%
mA
COMPONENT FUNCTION
Display Indicates present values, setting values and abnormal information.
Two types of present values are displayed respectively at the upper and lower parts according to setting.
Mode Button Shifts from Measuring mode to each setting mode.
The destination changes depending on how long the button is held down.
Pressing Mode button for ≥ 2 seconds returns to Measuring mode from each setting mode..
Set Button Shifts the setting value of each setting parameter item to a setting changeable state.
When at setting changeable state, used to move through the digits of setting value for input/output scal-
ing and to enter (save) the setting value.
Up Button Shifts through setting parameter items and to increase or select the setting value.
Down Button Shifts through setting parameter items and to decrease or select the setting value.
Configurator Jack Used to perform configuration with M2E configurator software (model: M2ECFG).
When using the software, set the Lockout setting of the unit to ‘Lock’.
DIP SWITCH
The internal DIP switch for output setting is required to select output types before setting a precise output range using front
buttons or setting with a PC.
Refer to the “PROGRAMMING” for the operation with front buttons. Refer to the users manual (EM-5147) of M2E Configura-
tor Software (model: M2ECFG) for setting with PC.
Output Range SW1
12345678
0 – 20 mA OFF ON OFF OFF OFF OFF ON OFF
-5 – +5 V OFF OFF ON OFF ON OFF OFF ON
-10 – +10 V OFF OFF ON OFF OFF ON OFF ON
CAUTION: DO NOT set DIP switches while power is supplied. Otherwise, the unit may fail.

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 5 / 19
SCREEN DISPLAY
■DISPLAY IN MEASURING MODE
• Double tiered display
The unit can display any two items selected out of input
engineering value, input scaling value, % value*, output en-
gineering value, and output scaling value.
* Percent value for input.
INP (Scaling)
L / min
12.34
50.00
PERCENT
%
Item name
Value
Unit
Item name
Value
Unit
Upper
Lower
• Single tiered display
When there is only one item selected, the value can be dis-
played in large characters.
OUTPUT
mA
20.00
Value
Unit
Item name
Refer to the settings of Advanced mode for details.
■DISPLAY IN EACH SETTING MODE
In each setting mode, setting parameter item name, item
No., and setting value are indicated.
During setting, ‘(Setting)’ is indicated next to ‘DATA’.
If the power is mistakenly shut down during setting, the set
value is discarded and returns to the value before setting
change.
Setting display previously displayed before power shut-
down is indicated at next power up.
Output range
ITEM
17
DATA (Setting)
-10–+10V
Setting parameter
Item number
Setting Value
The long parameter item name is scrolled and displayed.
ITEM
14
DATA
0.00
0% input scaling Scrolled and displayed
■DISPLAY TIMEOUT
When there is no operation within the preset display time-
out period, the display is cleared (display off).
Pressing Mode, Set, Up, or Down button or occurrence of an
error restores the display from display off.
Set to ‘0’ to keep the display ‘always on’.

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 6 / 19
PROGRAMMING
■SETTING FLOWCHART
POWER ON
Measuring Mode
Hold down Mode Button for ≥ 2 seconds
Hold down Mode Button
for ≥ 2 seconds
Basic Setting Mode
Option Mode
Advanced Mode
Hold down Mode Button for ≥ 2 seconds
Hold down Mode Button for ≥ 4 seconds
Hold down Mode Button for ≥ 2 seconds
Hold down Mode Button for ≥ 6 seconds
Linearization Mode
Hold down Mode Button for ≥ 2 seconds
Hold down Mode Button for ≥ 8 seconds

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 7 / 19
■OPERATION IN EACH SETTING MODE
• Basic operation
Mode Button: In measuring mode, holding down Mode button for ≥ 2 seconds, ≥ 4 seconds, ≥ 6 seconds or ≥ 8 seconds
enables to move on to each setting mode. Holding down Mode button for ≥ 2 seconds at each setting item
display enables to return to measuring mode.
Holding down Mode button for ≥ 2 seconds while changing settings (‘(Setting)’ is displayed next to ‘DATA’)
enables to discard setting value in changing, and to return to the state before change settings (‘(Setting)’
next to ‘DATA’ is off).
Set Button: Pressing Set button at each setting parameter enables to blink setting value and changing settings is
ready (‘(Setting)’ is displayed next to ‘DATA’). Pressing Set button while changing settings enables to
save (enter) setting value and change from blinking to on.
Up Button: Press Up button to move through setting parameters. Selecting setting value while changing settings,
increasing a setting value to set value. Keeping pressing Up button enables to increase the value con-
tinuously.
Down Button: Press Down button to move through setting parameters. Selecting setting value while changing settings,
decreasing a setting value to set value. Keeping pressing Down button enables to decrease the value
continuously.
Note: DO NOT press 2 or more buttons simultaneously.
• Operation of input setting parameter
[12] 0% input setting, [13] 100 % input setting are set by teach.
The present input value is displayed by pressing set button. With input value desired as 0% and 100% is entered, pressing
set button again enables to fix the setting.
• Input/output display scaling setting parameter
For input/output display scaling setting parameter, set values digit by digit. Pressing Set button enables to move blinking
digit. Adjust blinking digit to set numerical value with Up and Down button. Blinking digit moves from most significant digit
with pressing Set button. At least significant digit, pressing Set button again enables to turn on and determine the setting
value. During setting, press and hold Mode button for ≥ 2 seconds to discard the setting value.
ITEM
14
DATA
0
0% input scal
ITEM
14
DATA (Setting)
0% input scal
ITEM
14
DATA (Setting)
0% input scal
ITEM
14
DATA (Setting)
0% input scal
Set button Set button Set button
Setting sixth digit Setting fifth digit
Set button (save)
Setting first digit
000000 000000000000
• Lockout setting
‘Lockout setting’ is available for the unit. When unlocking the lockout setting, indicate ‘Lockout Setting’ of ‘ITEM 01’ in each
setting mode and set ‘Unlock’. To enable lockout setting again, set ‘Lock’. Even when lockout setting is enabled, it is available
to confirm the each setting value. ‘DATA (Locked)’ is indicated in that case.

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 8 / 19
■BASIC SETTING MODE
Measuring Mode
Lockout setting
0 % input setting
100 % input setting
0 % input scaling
100 % input scaling
Input decimal point
Output range
0 % output setting
100 % output setting
0 % output scaling
100 % output scaling
Output decimal point
Loop test
Set
Set
Hold down Mode button
for ≥ 2 seconds
Hold down Mode button
for ≥ 2 seconds
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set
SetSet
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Up Down
Lock / Unlock
100 % Teach
0 % Teach
-99999 – 999999
-99999 – 999999
oooooo / ooooo.o
oooo.oo / ooo.ooo
oo.oooo / o.ooooo
0 – 20 mA /
-5 – +5 V /
-10 – +10 V
0.000 – 19.000 /
-5.000 – 4.750 /
-10.000 – 9.000
1.000 – 20.000 /
-4.750 – 5.000 /
-9.000 – 10.000
-99999 – 999999
-99999 – 999999
oooooo / ooooo.o
oooo.oo / ooo.ooo
oo.oooo / o.ooooo
Cancel / Set
Basic Setting Mode

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 9 / 19
• Parameters
MODE ITEM SETTING PARAMETER RANGE UNIT INITIAL VALUE
Basic setting 01 Lockout setting Lock / Unlock — Lock
12 0 % input setting — — 0
13 100 % input setting — — 10000
14 0 % input scaling -99999 – 999999 — 0.00
15 100 % input scaling -99999 – 999999 — 100.00
16 Input decimal point No decimal point
The number of decimal
places : 1 – 5
— 2 places of decimals
17 Output range 0 – 20 mA
-5 – +5 V
-10 – +10 V
— 0 – 20 mA
18 0 % output setting 0.000 – 19.000
-5.000 – 4.750
-10.000 – 9.000
mA
V
V
4.000
19 100 % output setting 1.000 – 20.000
-4.750 – 5.000
-9.000 – 10.000
mA
V
V
20.000
20 0 % output scaling -99999 – 999999 — 0.00
21 100 % output scaling -99999 – 999999 — 100.00
22 Output decimal point No decimal point
The number of decimal
places : 1 – 5
— 2 places of decimals
26 Loop test -5.00 – 105.00 % Cancel

M2EXM
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5135-B Rev.5 P. 10 / 19
[01] Lockout setting
Set Lock / Unlock of lockout setting.
SETTING VALUE DESCRIPTION INITIAL VALUE
Lock Lockout setting enable Lock
Unlock Lockout setting disable
Even when setting is ‘Lock’, it is available to move on to
each setting mode and confirm the setting value of each set-
ting parameter. In each setting parameter display, when
‘Lock’, ‘DATA (Locked)’ is indicated, when ‘Unlock’, ‘DATA’
is indicated.
[12] 0 % input setting
0 % input setting is performed by teach.
For setting, use the corresponding value that input ratio for
total resistance is 0 – 10000.
Set as [12] 0% input setting < [13] 100 % input setting and
span 500 min. When the span is less than 500, ‘SETTING
ERROR’ is displayed and the setting is not determined. In-
put setting value set become 0% of ‘INPUT (Scaling)’ and
‘PERCENT’.
Initial value: 0
[13] 100 % input setting
100 % input setting is performed by teach.
For setting, use the corresponding value that input ratio for
total resistance is 0 – 10000.
Set as [12] 0% input setting < [13] 100 % input setting and
span 500 min. When the span is less than 500, ‘SETTING
ERROR’ is displayed and the setting is not determined. In-
put setting value set become 100% of ‘INPUT (Scaling)’ and
‘PERCENT’.
Initial value: 10000
[14] 0 % input scaling
Set the display value of 0 % input setting.
SETTING RANGE INITIAL VALUE
-99999 – 999999 0.00
[15] 100 % input scaling
Set the display value of 100 % input setting.
SETTING RANGE INITIAL VALUE
-99999 – 999999 100.00
[16] Input decimal point
Set the decimal point position of [14] 0 % and [15] 100 %
input scaling.
SETTING VALUE DESCRIPTION INITIAL VALUE
oooooo Decimal point: None
2 places of
decimals
ooooo.o Number of decimal places: 1
oooo.oo Number of decimal places: 2
ooo.ooo Number of decimal places: 3
oo.oooo Number of decimal places: 4
o.ooooo Number of decimal places: 5
[17] Output range
Set the range of output signal of the unit.
SETTING VALUE DESCRIPTION INITIAL VALUE
0 – 20 mA Output: 0 – 20 mA DC
0 – 20 mA-5 – +5 V Output: -5 – +5 V DC
-10 – +10 V Output: -10 – +10 V DC
When output range is changed, turn the power off, and then
set the output setting DIP SW on the side of the unit. Set-
ting is as follows. Output setting value is changed to initial
value.
OUTPUT
RANGE
SW1
12345678
0 – 20 mA OFF ON OFF OFF OFF OFF ON OFF
-5 – +5 V OFF OFF ON OFF ON OFF OFF ON
-10 – +10 V OFF OFF ON OFF OFF ON OFF ON
[18] 0 % output setting
Set the 0 % output setting.
OUTPUT RANGE SETTING RANGE MIN. SPAN INITIAL VALUE
0 – 20 mA 0.000 – 19.000 1.000 4.000
-5 – +5 V -5.000 – 4.750 0.250 -5.000
-10 – +10 V -10.000 – 9.000 1.000 -10.000
Set as follows.
[18] 0 % output setting < [19] 100 % output setting
The value is indicated by ‘OUTPUT’ at measuring mode.
[19] 100 % output setting
Set the 100 % output setting.
OUTPUT RANGE SETTING RANGE MIN. SPAN INITIAL VALUE
0 – 20 mA 1.000 – 20.000 1.000 20.000
-5 – +5 V -4.750 – 5.000 0.250 5.000
-10 – +10 V -9.000 – 10.000 1.000 10.000
Set as follows.
[18] 0 % output setting < [19] 100 % output setting
The value is indicated by ‘OUTPUT’ at measuring mode.
[20] 0 % output scaling
Set the display value of [18] 0 % output setting.
SETTING RANGE INITIAL VALUE
-99999 – 999999 0.00
[21] 100 % output scaling
Set the display value of [19] 100 % output setting.
SETTING RANGE INITIAL VALUE
-99999 – 999999 100.00
[22] Output decimal point
Set decimal point position for [20] 0 % and [21] 100 % out-
put scaling.
SETTING VALUE DESCRIPTION INITIAL VALUE
oooooo Decimal point: None
2 places of
decimals
ooooo.o Number of decimal places: 1
oooo.oo Number of decimal places: 2
ooo.ooo Number of decimal places: 3
oo.oooo Number of decimal places: 4
o.ooooo Number of decimal places: 5