INSTRUCTION MANUAL
CURRENT LOOP SUPPLY
MODEL
M3LDY
(linearizing; field- and PC-configurable)
■ WIRING
• Do not install cables (power supply, input and output) close
to noise sources (relay drive cable, high frequency line, etc.).
• Do not bind the unit's cables together with cables where
high noise levels are present. Do not install them in the same
duct.
BEFORE USE ....
Thank you for choosing M-System. Before use, check the
package you received as below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■ AND ....
■ PACKAGE INCLUDES:
• The unit is designed to function as soon as power is
supplied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data sheet.
Signal conditioner ....................................................... (1)
I/O range and tag name label sheet ........................... (1)
■ MODEL NO.
Check that the model No. described on the specification label
is exactly what you ordered.
COMPONENT IDENTIFICATION
■ INSTRUCTION MANUAL
Body
This manual describes the necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
Specification Label
The M3LDY with Option /A is programmable using the PC
configurator software. For detailed information on the PC
configuration, refer to the M3CON instruction manual. The
M3CON PC Configurator Software is downloadable at M-
(side)
SW Setting Label
■ HOW TO OPEN THE COVER WHEN SETTING DIP SW
Hold at the top and bottom of the unit as shown below and
slidethehousingcovergentlytoopenuntilithitsthelatching
inside the unit.
POINTS OF CAUTION
■ CONFORMITY WITH UL
(UL is unavailable for certain model suffix options.)
• This equipment is suitable for use in a Pollution Degree 2
environment.
• This equipment is to be used with the maximum operating
voltage 30Vrms and 42.4Vpeak or 60V DC.
• The equipment must be mounted inside a suitable fire
enclosure.
Caution:
Handle the cover carefully to protect internal components from damage.
DO NOT pull beyond where the housing cover is latched. The plastic
housing may be damaged.
• Operating temperature: -25 to +55°C (-13 to +131°F)
■ POWER INPUT RATING & OPERATIONAL RANGE
• Check the power rating for the unit on the specification
label.
Rating 24V DC: 24V ±10%, approx. 3W
• Power fuse: A power fuse of the rating as shown below is
incorporated for safety. However, DO NOT replace it by the
user.
T 0.25A 125V
■ SAFETY PRECAUTION
• Housing Cover Fully Opened
• 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 ventila-
tion.
• 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 -25 to +65°C
(-13 to +149°F) with relative humidity within 0 to 95% RH in
order to ensure adequate life span and operation.
P. 1 / 6
EM-2664 Rev.2
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M3LDY
EXTERNAL & INTERNAL VIEWS
■FRONT VIEW
■SIDE VIEW
LED1 (LD1)
10 11 12
LED2 (LD2)
Configuration DIP SW
7
8
9
LED3 (LD3)
MODE Button
UP Button
4 3 2 1
OFF
ON
DOWN Button
SW1
Configurator Jack
SW2
8 7 6 5 4 3 2 1
OFF
4
5
6
SW3
ON
OFF
ON
■CONFIGURATION MODE (SW2)
Table 1
CONFIGURATION MODE & DIP SW SETTINGS
MODE
DIP SW
PC
SW2-8
OFF
ON
Configuration mode can be
confirmed with the front LED.
When you program the transmitter module, two configura-
tion modes are available: Field Configuration using DIP SW
/ control buttons, and PC Software. (The Option B type is for
the field configuration only.)
■INPUT TYPE (SW2 & 3)
Table 2
INPUT TYPE
DC current
(isolator use)
2-wire loop
SW2-7
SW3
The internal DIP switches are used to configure input and
output type. Once the module is configured, precise ranges
are set up with the front control buttons using a simulator
connectedtotheinputterminalsandamultimeterconnected
to the output terminals as a reference.
ON
OFF
OFF
ON
(DC supply use)
The calibrated input and output ranges are stored in the
internal memory. The module reads the DIP-switch-cali-
brated configuration only once after the power supply is
turned on. Set the switches with the power supply removed.
Selectable I/O type and ranges are listed in Table 5 and 6.
■OUTPUT TYPE (SW2 & 1)
Table 3
OUTPUT
0 – 20mA
SW2-4 SW2-3 SW1-4 SW1-3 SW1-2 SW1-1
OFF OFF
OFF
ON
ON
OFF OFF
-2.5 – +2.5V
-10 – +10V
OFF
ON
ON
OFF OFF
ON
OFF
ON
OFF
ON
OFF
■ DIP SW CONFIGURATION MODE
Turn the SW2-8 OFF to enable the DIP SW (Field Configura-
tion) mode as shown in Table 1.
■OUTPUT TYPE / PC CONFIG (SW1)
Table 4
OUTPUT
0 – 20mA
SW1-4
OFF
ON
SW1-3
ON
SW1-2
OFF
OFF
ON
SW1-1
OFF
ON
See Table 2 to configure the input and Table 3 for the output.
-2.5 – +2.5V
-10 – +10V
OFF
OFF
■ PC CONFIGURATION MODE
ON
OFF
Turn the SW2-8 ON to enable the PC Configuration mode as
shown in Table 1. All programmable features can be set up
on a PC regardless of other DIP SW setting except that the
output type must be selected with the DIP SW1-1 through
SW1-4 (See Table 4).
For detailed information on the PC configuration, refer to the
M3CON instruction manual.
■ INPUT TYPE & RANGE
Table 5
Table 6
INPUT TYPE
MINIMUM SPAN
2mA
MAXIMUM RANGE
DC Current
0 to 20mA
■ OUTPUT TYPE & RANGE
OUTPUT TYPE
MINIMUM SPAN
MAXIMUM RANGE
CONFORMANCE RANGE
0 to 24mA
DC Current
1mA
250mV
1V
0 to 20mA
-2.5 to +2.5V
-10 to +10V
DC Voltage, Narrow Spans
DC Voltage, Wide Spans
-3 to +3V
-11.5 to +11.5V
P. 3 / 6
EM-2664 Rev.2
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M3LDY
CHECKING
1) Terminal wiring: Check that all cables are correctly connected according to the connection diagram.
2) DIP SW setting: Check that the switches are set to appropriate positions.
3) Power input voltage: Check voltage across the terminal 11 – 12 with a multimeter.
4) Input: Check that the input signal is within 0 – 100% of full-scale.
5) Output: Check that the load resistance meets the described specifications.
I/O RANGING & FINE ADJUSTMENTS
After the DIP SW setting is complete, set up the precise input and output range using the front control buttons.
The front LEDs’ colors and flashing patterns help you to easily identify the transmitter’s status and confirm the setup actions
in each step of Calibration Modes. Please read the following explanations referring to “Calibration Flow Chart” below.
■ CALIBRATION FLOW CHART
POWER ON
MODE
UP
Amber LED
Green LED
Red LED
OFF
ON
A
G
R
LD1
G
Control
Buttons
LD2
Fine Adjustments ?
I/O Ranging ?
RUN MODE
DOWN
Blink
LD3
G
MODE
MODE
> 5s
PUSH
1 – 2 s
PRESS & HOLD
Apply simulated 0% input signal.
1
*
LD1
R
LD1
0% INPUT
CONFIGURED
DOWN
UP
PUSH
PUSH
R
LD2
FINE ZERO
CALIBRATION MODE
INPUT
LD2
CALIBRATION
MODE
G
R
100% INPUT
CONFIGURED
LD3
LD3
UP or DOWN
Apply simulated 100% input signal.
MODE
MODE
PUSH
PUSH
Adjust simulated input until the output meter
shows desired 0% output.
1
*
LD1
R
LD1
R
0% OUTPUT
CONFIGURED
DOWN
UP
PUSH
PUSH
FINE SPAN
CALIBRATION MODE
OUTPUT
CALIBRATION
MODE
LD2
LD2
100% OUTPUT
CONFIGURED
LD3
LD3
UP or DOWN
G
R
Adjust simulated input until the output meter
shows desired 100% output.
MODE
MODE
PUSH
PUSH
When you set 0% or 100% input/output ranges,
keep pressing UP or DOWN button until the
LD1 flashes for approx. 2 seconds and turns off,
which indicates the setup is complete.
When you release the button, the LD1 is returned
to ON.
LD1
G
LD2
RUN MODE
If the LED does not change, the entered level may
be inappropriate, i.e. out of usable range.
LD3
*1. Fine zero and calibrations are performed for 0% and 100% output regardless of the input value.
P. 4 / 6
EM-2664 Rev.2
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M3LDY
■ PREPARATION (e.g. M3LDY-R/A)
4) Fine Span Calibration Mode: Push MODE button and
confirm that the LD3 green light instead of LD2 is blink-
ing.
5) UseUP(increase)andDOWN(decrease)buttonstoadjust
the output to 100%.
1) Mount the DIP-SW-configured M3LDY on to a DIN rail.
2) Connect the M3LDY to a simulator and a multimeter and
to a DC power source as shown to the right.
3) Turn the power supply on and wait for 10 minutes.
6) Run Mode: Push MODE button and confirm that only the
LD1 green light is blinking.
Multimeter
M3LDY
Simulator
+
–
Note 1: Calibration steps can be skipped when not needed by
repeating pushing MODE buttons.
+
–
2
3
7
8
Note 2: There is no stated order of setting 0% and 100% levels
or no limitation of entering values for multiple times within
one step of Calibration Mode. Signal level is stored each time
the respective UP or DOWN button is pressed.
DC Power Source
11
+
–
12
■ I/O RANGE LABEL
Blank I/O range labels are included in the product pack-
age. Write in the configured ranges and put the label on
the side above the specification label as shown below.
■ INPUT & OUTPUT RANGING
[Example]
Setting input to 4 – 20mA DC and output to 1 – 5V DC
1) Run Mode: Confirm that the LD1 green light is blinking.
2) Input Configuration Mode: Press MODE button for longer
than 5 seconds until the LD1 red light is ON and the LD2
red light is blinking.
3) 0% Input Ranging: Apply the desired minimum input
level (e.g. 4mA) from the simulator and push DOWN
button until the LD1 flashes for approx. 2 sec. and then
turns OFF. When you release the button, the LD1 is
returned to ON.
The flashing LD1 means that the value is stored in the
memory. If the LED does not change, the entered level
may be inappropriate: too small a span, or out of usable
range (same for all steps).
INPUT
OUTPUT
4) 100% Input Ranging: Apply the desired maximum input
level (e.g. 20mA) from the simulator and push UP button
until the LD1 flashes for approx. 2 sec. and then turns
OFF. When you release the button, the LD1 is returned to
ON.
I/O Range Label (included in the product package)
5) Output Configuration Mode: Push MODE button and
confirm that the LD3 red light instead of LD2 is blinking.
6) 0% Output Ranging: Increase or decrease the simulated
input until the meter shows the desired minimum output
level (e.g. 1V). Push DOWN button until the LD1 flashes
for approx. 2 sec. and then turns OFF. When you release
the button, the LD1 is returned to ON.
7) 100%OutputRanging:Increaseordecreasethesimulated
input until the meter shows the desired maximum output
level (e.g. 5V). Push UP button until the LD1 flashes for
approx. 2 sec. and then turns OFF. When you release the
button, the LD1 is returned to ON.
8) Run Mode: Programming complete, push MODE button
and confirm that only the LD1 green light is blinking.
■ ZERO & SPAN ADJUSTMENTS
After the transmitter is installed and operational, fine zero
and span tuning can be performed as explained below. Both
zero and span are adjustable within ±15%.
1) Run Mode: Confirm that the LD1 green light is blinking.
2) Fine Zero Calibration Mode: Press MODE button for 1 or
2 seconds until the LD1 red light is ON and the LD2 green
light is blinking.
3) UseUP(increase)andDOWN(decrease)buttonstoadjust
the output to 0%.
P. 5 / 6
EM-2664 Rev.2
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M3LDY
STATUS INDICATOR LED
Combinations of the three front LEDs (LD1, LD2, LD3)
indicatethetransmitter’soperatingstatusbydifferentflash-
ing patterns.
Amber LED
Green LED
OFF
ON
A
G
Examples are shown below.
R Red LED
Blink
NORMAL OPERATION (RUN) MODE
LD1
LD1
G
PC Configuration RUN Mode (Option A)
The transmitter is configured via PC and
is in normal operating conditions.
DIP SW Configuration RUN Mode
The transmitter is configured via DIP SW and
is in normal operating conditions.
G
LD2
LD2
LD3
LD3
ERROR MODE
LD1
LD1
R
System Error
Indicates the CPU’s communication error.
DIP SW Error
DIP SW configuration is inappropriate.
A
LD2
LD2
Check the DIP SW setting referring to Tables 2 – 11.
A
LD3
A
R
LD3
R
LD1
LD1
G
Output Saturated in PC Configuration Mode
(Option A)
Output Saturated in DIP SW Configuration Mode
The output is saturated.
G
LD2
LD2
The output is saturated.
(approximately below -15% or above +115%)
(approximately below -15% or above +115%)
LD3
LD3
A
A
M-SYSTEM WARRANTY
M-System warrants such new M-System product which it manufactures to be free from defects in materials and workmanship during the 36-month period following the date that such
productwasoriginallypurchasedifsuchproducthasbeenusedundernormaloperatingconditionsandproperlymaintained,M-System'ssoleliability,andpurchaser'sexclusiveremedies,
under this warranty are, at M-System's option, the repair, replacement or refund of the purchase price of any M-System product which is defective under the terms of this warranty. To
submit a claim under this warranty, the purchaser must return, at its expense, the defective M-System product to the below address together with a copy of its original sales invoice.
THIS IS THE ONLY WARRANTY APPLICABLE TO M-SYSTEM PRODUCT AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. M-SYSTEM SHALL HAVE NO LIABILITY FOR CONSEQUENTIAL, INCIDENTAL OR
SPECIAL DAMAGES OF ANY KIND WHATSOEVER.
M-System Co., Ltd., 5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN, Phone: (06) 6659-8201, Fax: (06) 6659-8510, E-mail: [email protected]
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