MC-11 4-20mA Signal Converter for Pyranometers

1. Index
1. Index
2. Important User Information
1
2
2- 1 . C on tac t Inf orm ati on
2
2- 2 . W arrant y a n d L ia b il i t y
2
2- 3 . Ab o ut I ns t ruc t io n Ma n ua l
3
2- 4 . E n v ir onm en t
3
2- 5 . C E D ec l ar at i o n
4
3. Safety Information
5
3- 1 . W ARNING /C A UT I O N
4. Introduction
5
6
4- 1 . M a in F u nc t i ons
6
4- 2 . P ac k ag e C on t en ts
7
5. Getting Started
8
5- 1 . P arts N am e
8
5- 2 . S e tu p
9
5- 3 . M e as ur em en t
11
6. Troubleshooting
6- 1 . Tro ub l es h o ot i n g
7. Specification
12
12
13
7- 1 . Tra ns d uc er Spec if ic at i on
13
7- 2 . D im ens io ns
13
7- 3 . Ac c e s s or i es L is t
14
APPENDIX
A- 1. O pt i on a l It em s
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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15
Pg. 1
2. Important User Information
Thank you for using EKO Products
Make sure to read this instruction manual thoroughly and to understand the contents before starting to operate the
instrument. Keep this manual at safe and handy place for whenever it is needed.
For any questions, please contact us at one of the EKO offices given below:
2- 1. C on tac t I nfo r mati on
EKO INSTRUMENTS CO., LTD.
Asia, Oceania Region
www.eko.co.jp
info@eko.co.jp
EKO INSTRUMENTS Co., Ltd.
1-21-8 Hatagaya, Shibuya-ku
Tel:
+81 (3) 3469-6711
Tokyo, 151-0072 Japan
Fax:
+81 (3) 3469-6719
Lulofsstraat 55, Unit 32,
Tel:
+31 (0)70 3050117
2521 AL, Den Haag, The Netherlands
Fax:
+31 (0)70 3840607
95 South Market Street, Suite 300
Tel:
+1 408-977-7751
San Jose, CA 95113 USA
Fax:
+1 408-977-7741
Europe, Middle East, Africa, South America Region
www.eko-eu.com
info@eko-eu.com
EKO INSTRUMENTS Europe B.V.
North America Region
www.eko-usa.com
info@eko-usa.com
EKO INSTRUMENTS USA Inc.
2- 2. Wa r ra nt y an d Li a bi l i t y
For warranty terms and conditions, contact EKO or your distributor for further details.
EKO guarantees that the product delivered to customer has been verified, checked and tested to ensure that
the product meets the appropriate specifications. The product warranty is valid only if the product has been
installed and used according to the directives provided in this instruction manual.
In case of any manufacturing defect, the product will be repaired or replaced under warranty. However, the
warranty does not apply if:

Any modification or repair was done by any person or organization other than EKO service
personnel.

The damage or defect is caused by not respecting the instructions of use as given on the product
brochure or the instruction manual.
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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2- 3. A bo ut I ns tr uc ti o n Ma nu al
Copy Rights Reserved by EKO INSTRUMENTS CO., LTD.
Making copies of whole or parts of this
document without permission from EKO is prohibited.
This manual was issued:
2016/09/26
Version Number:
4
2- 4. Env i ro nm ent
1. WEEE Directive 2002/96/EC
(Waste Electrical and Electronic Equipment)
This product is not subjected to WEEE Directive 2002/96/EC however it should not be mixed with general
household waste. For proper treatment, recovery and recycling, please take this product(s) to designated
collection points.
Disposing of this product correctly will help save valuable resources and prevent any potential negative
effects on human health and the environment, which could otherwise arise from inappropriate waste
handling.
2. RoHS Directive 2002/95/EC
EKO Instruments has completed a comprehensive evaluation of its product range to ensure compliance with
RoHS Directive 2002/95/EC regarding maximum concentration values for substances. As a result all products
are manufactured using raw materials that do not contain any of the restricted substances referred to in the
RoHS Directive 2002/95/EC at concentration levels in excess of those permitted under the RoHS Directive
2002/95/EC, or up to levels allowed in excess of these concentrations by the Annex to the RoHS Directive
2002/95/EC.
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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2- 5. CE D ec l a ra ti o n
DECLARATION OF CONFORMITY
We:
EKO INSTRUMENTS CO., LTD
1-21-8 Hatagaya Shibuya-ku,
Tokyo
151-0072 JAPAN
Declare under our sole responsibility that the product:
Product Name:
4 to 20mA Signal Converter
Model No.:
MC-11
To which this declaration relates is in conformity with the following harmonized
standards of other normative documents:
Harmonized standards:
EN 61326-1:2013 Class A (Emission)
EN 61326-1:2013
(Immunity)
Test was done in this condition which are signal cable length is under 3m and used the
metal box.
Following the provisions of the directive:
EMC-directive:
2004/108/EC
Date:
July. 1, 2015
Position of Authorized Signatory:
Name of Authorized Signatory:
Deputy General Manager of Quality Assurance Dept.
Shuji Yoshida
Signature of Authorized Signatory:
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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3. Safety Information
EKO Products are designed and manufactured with consideration for safety; however, please make
sure to read and understand this instruction manual thoroughly to be able to operate the instrument
safely in the correct manner.
WARNING
CAUTION
Attention to user; pay attention to the instructions given on the
instruction manual with this sign.
3- 1. WA RN IN G/ CA U TI O N
1. Setup

Install MC-11 in a dry place (where MC-11 will not get wet or soaked in water).

Do not install MC-11 in direct sun light.

Use MC-11 with grounding connection.

Although this product is tested to meet EMC Directive compliance requirements, it may not fully
satisfy its primary specification/performance when using this product near following locations
where strong electromagnetic wave is generated.
Please pay attention to the installation
environment.
Outdoor:
High voltage power line, power receiver/distribution facility, etc.
Indoor:
Large-size chiller, large rotation device, microwave, etc.
2. Power Supply

Always check the voltage and AC/DC type for the specified supply power before connecting the
MC-11.
If wrong type of power supply is connected, it may cause MC-11 malfunction and lead to
accidents.

Use with fuse around 0.5A connected in series on the power supply cable.
Depending on the
power supply connected, large current may flow when the internal malfunction occur, and may lead
to generating heat and fire.
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4. Introduction
4- 1. Mai n F un c ti ons
Pyranometer Signal Converter MC-11 is a compact signal converter which converts the voltage signal output
(mV) from sensors like pyranometers into current loop signal output (mA).
2
The output range of the current
2
loop is between 4 to 20mA; 4mA is equivalent to 0W/m , 20mA is equivalent to 1,600W/m of solar irradiance.
(This setting can be changed using the optional signal converter configuration cable and Configurator
Software.)
By converting the output into current loop signal, not only it makes easier to connect the pyranometers to PV
monitoring devices, it also reduce impacts from noise and signal level decrease when transmitting in a long
distance.
By using the signal converter configuration cable (optional) and the Configurator Software (optional), the
measurement configuration for the signal converter can be changed.
With IP65 signal converter box (optional), it can be installed outdoor.
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4- 2. Pac k ag e Co nte nts
Check the package contents first; if any missing item or damage is noticed, please contact EKO immediately.
Table 4-1 Package Contents
Standard Items
Qty.
4-20mA Signal Converter
1 unit
L-Shaped Tab Terminals (Male)
4 pcs.
Plug-Type Crimping Terminals
4 pcs.
Round-Type Grounding Terminal
1 pc.
Double-Sems Screw for Grounding
Terminal
Double-Sems Screws for Installation
Remarks
1pc.
2pcs
Inspection Report
1
Instruction Manual
--
Not included in the package.
Please download from EKO Website
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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5. Getting Started
5- 1. Pa rts Na me
Each part name and its main functions are described below.
2
1
3
5
4
7
6
Figure 5-1. Parts Name
Table 5-1.
Parts Name and Terminal Numbers
Parts Name
Terminal Numbers
1
Pyranometer Voltage Signal Input Terminal ( - )
1
2
Pyranometer Voltage Signal Input Terminal ( + )
2
3
NTC Thermistor Connection Terminal
3
4
NTC Thermistor Connection Terminal
4
5
4-20mA Output & Power Supply Input Terminal ( - )
5
6
4-20mA Output & Power Supply Input Terminal ( + )
6
7
Grounding Terminal
N/A
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5- 2. Se tu p
1. Installation
1)
Install MC-11 in dry location (where it will not get wet or get soaked in water).
2)
Keep MC-11 away from direct sunlight.
3)
When fixing the MC-11 to mounting plate, use provided Double-Sems Screws for installation.
Maximum
torque for fastening the MC-11 to mounting is 0.4N/m.
NOTE:
MC-11 is paired with the pyranometer which is purchased together; when connecting with the
pyranometer, make sure to connect with the right pyranometer.
Use the pyranometer with same serial
number stated on the MC-11 inspection report.
NOTE:
The recommended maximum length of 4-20mA signal cable is 300m when using DC24V power
supply and AWG25 (0.2sq) cable.
2. Wiring
1)
Attach the provided L-shaped tab terminal (male) to the terminal numbers 1, 2, 5, and 6.
2)
Crimp and connect the plug-type crimping terminal (female) to input and output cable ends. (Please use
2
crimping tool that is for crimping terminal with insulating coating applicable for 1.25mm ).
3)
Connect the L-shaped tab terminal (male) attached to the MC-11 and plug-type crimping terminal
(female).
4)
There are 2 ways to connect with the peripheral devices:
・
Using Current Meter:
As shown on Figure 5-2, insert the current meter directly to the 4-20mA
current loop circuit and measure its value.
・
Using Voltmeter: As shown on Figure 5-3, insert shunt resistance to the 4-20mA current loop circuit
and measure the voltage at both ends of resistance. When 250Ω shunt resistance value for
example is inserted, 4-20mA is converted into 1-5V.
measurement range of voltmeter to be used.
Prepare shunt resistance according to the
Moreover, voltage decreases by inserting shunt
resistance; please keep this in mind when selecting power supply voltage.
5)
Connect the shield cable from Pyranometer to grounding terminal on MC-11.
Also ground the MC-11
grounding terminal. When connecting the cable to the grounding terminal, use provided round terminal
for grounding terminal and double-sems screw for grounding terminal.
6)
Prepare a fuse with rated current 0.5A.
the power supply.
Using the fuse holder specified for this fuse, connect in series to
Depending on the connecting power supply, there are risks for internal malfunction
and generating heat and fire when large amount of current flows
7)
To use the temperature compensation function using a pyranometer with output wire for NTC Thermistor
(44031, 10kΩ), connect this output wire to terminal numbers 3 and 4.
(To use the temperature compensation function, optional converter configuration cable and Configurator
Software are required)
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Figure 5-2. Wiring (when using current meter)
Figure 5-3. Wiring (when using voltmeter)
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5- 3. Me as u r e men t
1. Calculation of Solar Irradiance from Current Output
2
To determine the solar irradiance [W/m ], apply the current loop signal [mA] from the Signal Converter or
voltage value measured at both side of shunt resistance [V] to the following conversion formula:
Calculation Method for Solar Irradiance [W/m2]
When using measuring device with current input (the wiring connection case of Figure 5-2):
To convert the measured current loop signal (4-20mA) into solar irradiance, use following formula:
Ir[W / ㎡] 
Iout[mA]  4[mA]
 Ir max[W / ㎡]
20[mA]  4[mA]
Where:
2
Ir
= Solar Irradiance [W/m ]
Iout
= Measured Current Loop Signal [mA]
Irmax
= Maximum Irradiance Setting Value* (Default value:
2
1,600W/m )
*The maximum irradiance setting value can be changed using optional converter configuration cable
and Configurator Software.
When using measuring device with voltage input (Shunt resistance is required( Figure 5-3):
To convert the measured voltage at both sides of shunt resistance into solar irradiance, use following formula:
V [V ]
 1,000  4[mA]
R[Ω]
Ir[W/㎡] 
 Ir max[W / ㎡]
20[mA]  4[mA]
Where:
2
Ir
= Solar Irradiance [W/m ]
V
= Measured Voltage [V]
R
= Shunt Resistance Value [Ω]
Irmax
= Maximum Irradiance Setting Value* (Default value:
2
1,600W/m )
*The maximum irradiance setting value can be changed using optional converter configuration cable
and Configurator Software.
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6. Troubleshooting
6- 1. Tro ubl es hoo ti n g
Check the following items in case of trouble with the instrument. If any questions should remain, contact
EKO for further technical support.
Table 6-1. Troubleshooting
Failure
Action
There is no output from the signal
Check the output cable connection, and make sure there are no
converter.
disconnections and the pyranometer is surely connected.
Check to make sure that appropriate power supply voltage is supplied.
Output value from the signal
Check the pyranometer serial number; make sure it is same as the serial
converter is not appropriate.
number stated on the inspection report.
There is output more than 20mA
Check the pyranometer is connected.
from the signal converter.
(When pyranometer signal input terminal is in opened condition, the output
will be larger than 20mA.)
There is output less than 4mA
Check wither the + and – wirings are connected in reverse.
from the signal converter.
NOTE:
This phenomenon is not an abnormal condition; there are cases
that less than 4mA output show due to pyranometer zero-offset effects.
Signal converter output is
Check for any loose wire/cable connections.
unstable.
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7. Specification
7- 1. Tra ns d uc er Spe c i fi c a ti on
Table 7-1. Transducer Specification
Characteristics
Details
Input Range
DC 0 to 100mV
Output
DC 4 to 20mA
Resolution
<5μV
Input Impedance
> 10MΩ
Temperature Response (-20~50℃)
< 0.2%
Accuracy Assured Operating Temperature Range*
-20 to +50℃
Operating Temperature Range
-40 to +80℃
Operating Humidity Range
≦ 95RH% (no condensation)
Response Time
1sec. (99% Output)
Non-Linearity
< 0.1% (0 to 100mV)
Zero Offset
<5μV (Output offset value when 0mV is input)
Power Supply Voltage Conversion Error
<0.05% (When supply voltage changed from 12V to 24V)
Power Supply
DC 12 to 24 V ±10%
Power Consumption
0.08 to 0.75W
Dimension
φ45 × 23mm
Weight
0.03kg
*When the Signal Converter is used in ambient temperature over the Accuracy Assured Operating
Temperature Range, the measurement error may increase.
7- 2. Di m ens i o ns
Unit in mm
Figure 7-1. Dimensions
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7- 3. Ac c es s o r i es Li s t
Table 7-2. Accessories List
Option Items
Remarks
Signal Converter Configurator Cable
Cable Length: 1m
Signal Converter Configurator Software
Program Name:
Signal Converter Box 1
Signal Converter Box 2
EKO Sense Configurator
Box for 1 unit signal converter (Includes:
4pcs M4 screws, 4pcs
Mounting Feet, 3pcs Blind Bar)
Box for 2 units of signal converter (Includes:
4pcs M4 screws,
4pcs Mounting Feet, 4pcs Blind Bar)
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APPENDIX
A- 1. O pti on al Ite ms
1. Signal Converter Configurator Cable
A cable for the Signal Converter configuration; this cable and the Signal Converter Configurator Software are
required for configuration.
The configuration procedure is explained in A-1, [2. Configurator Software]
section
TableA-1. Package Content
Items
Qty.
Remarks
1
Cable Length: 1m
Signal Converter Configuration Cable
1)
Specification
Table A-2. Specification for Signal Converter Cable
Items
Specifications
Applicable OS
Microsoft ® Windows XP, Vista, 7, 8, 8.1
Interface
USB2.0
Weight
0.15 kg
Cable Length
1.0m
2. Signal Converter Configurator Software
Configurator Software is used for changing each configuration on the Signal Converter and easy data review.
1)
Specification
Table A-3. Specification for Configurator Software
Items
Specifications
Name of Program
EKO Sense Configurator
Applicable OS
Windows XP, Vista, 7, 8, 8.1
License
No limitation
CPU:
Applicable OS is operational
Operation
Memory:
Applicable OS is operational
Environment
Hard Disk Capacity:
More than 100MB
Display Resolution:
More than 800x600
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2)
Installation Procedure
Follow below procedure to install the Signal Converter Configurator Software:
a.
Download the latest version of Signal Converter Configurator Software from the EKO Website.
MC-11 product page:
b.
http://eko-eu.com/
When the installer file is executed, following Welcome Window appears.
Click [Next] button
(Depending on the operating system, message for installation authorization may appear.)
Figure A-1. Welcome Window
c.
Assign the folder for installation, and click [Next] button.
Figure A-2. Choose Destination Location Window
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d.
In the following window, decide whether to add short cut for this software to Windows Start Menu
and on Desktop.
As default setting, the shortcuts are added to the Start Menu and Desktop.
Remove the checks from the checkboxes as necessary, then click [Next] button.
Figure A-3. Set Program Shortcuts Window
e.
In the following window, click [Next] button to start the files required for the software to be copied to
your computer
Figure A-4. Confirm Setup Settings Window
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f.
When all the files are copied to your computer, following window appears.
button, the software installation is finished and software starts up.
By clicking [Finish]
If you don’t want to start the
software immediately, place a check on checkbox before clicking the [Finish] button.
図 A-5. Setup Complete Window
3)
Connection Procedure
a.
When configuring the Signal Converter, connect the Signal Converter according to the Figure A-6
b.
Connect the Configurator Cable and PC with USB.
Connect the Red alligator clip on Configurator Cable to No.6 terminal, and Black alligator clip on
Configurator Cable to No. 5 terminal on the Signal Converter. (Figure A-7)
Figure A-6. Connection for Configuring the Signal Converter
Figure A-7. Connection between the Signal Converter and Configurator Cable
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4)
Signal Converter Configuration Procedure
a.
Startup the software (EKO Sense Configurator). Initial setting of the language is English at the time
of software startup.
If necessary, change the language setting from the tool bar at the top of the
window (Tools  Language). (There are English, Portuguese, Spanish, and Japanese available.)
Figure A-8. Language Setting Window
b.
Next, select the product that you want to change configuration.
Select “4-20mA” from the list.
Select
Figure A-9. Product List Window
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c.
After connecting between PC, configurator cable and Signal converter according to the previous
step in [3) Connection Procedure], click “Search and Connect” from “Tool” menu (Figure A-10).
The connection is automatically established, and the connection is completed when it is indicated
as “Read OK (Figure A-12)”
Figure A-10. Device Search & Connection Button
If the connection is not established automatically, check the setting for serial port to be connected,
and follow below procedure.
When “Serial Port Setting” is selected from the “Tools”, following window appears (Figure A-11).
Select the serial port that USB is connected from the “Serial Port” in the Serial Port Settings.
Do not change any settings other than the “Serial Port” or it cannot get connection.
The default setting values are as follows:
<Serial Port Settings>
Baud Rate:1200、Data Bits:8、Parity:None、Stop Bits:2、Handshaking:None
<Line Signals>
Non selectable
<Data Mode>
Big Endian Unicode
<Serial Port Timeouts>
Read Timeout (ms):1000、Write Timeout (ms):1000
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After selecting the “Serial Port”, click [Save] button to save the setting.
After saving the setting,
click [x] button at the top of the Serial_Port_Config window to close this window.
X Button
Serial Port
Figure A-11. Serial_Port_Config Window
d.
Enter the pyranometer model number, sensitivity, minimum irradiance, maximum irradiance, and
offset value.
・Pyranometer Model:
・Sensitivity:
Model number of Pyranometer to be connected (i.e. MS-802)
2
Sensitivity of Pyranometer to be connected (i.e. 10 uV/W/m )
・Minimum Irradiance:
Solar irradiance equivalent to the 4mA which is the minimum value of
2
current loop signal (i.e. 0 W/m )
・Maximum Irradiance:
Solar irradiance equivalent to 20mA which is the maximum value of current
2
loop signal (i.e. 1600 W/m )
・Offset Value:
Offset for current loop signal (i.e. 0μV)
Figure A-12. Configuration Change Window
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e.
When “Write Device” button is clicked, confirmation window appears; click [Yes] button to start
loading the configuration in the Signal Converter. When it is indicated as the “Write OK”, the
configuration is complete.
Write Device Button
Figure A-13. Write Device Button
5)
Saving and Loading the Configuration in Signal Converter
a.
To save the configuration in a file, click [Save as] button on the tool bar at the top configuration
window; select the destination and enter the file name then save the configuration.
XML format.
b.
To overwrite the changes on a file already exists, click [Save] button.
When there is already saved file available, this file can be loaded.
the XML file.
Open Button
The file is in
Click [Open] button and select
The loaded configurations will be shown on the configuration window.
Save As Button
Figure A-14. Save and Load Configuration
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6)
Creating PDF Report with Signal Converter Configurations
To create PDF file with configuration information, click [Report] button on the tool bar at the top of
configuration window.
Select the destination and enter file name to save the configuration.
Report button
Figure A-15. Output Configurations on Report
7)
Advanced Optional Settings
Temperature correction and linearity correction functions can be used.
Click [Advanced Option] button.
Temperature correction and linearity correction functions can be setup
by entering the following password:
eko2014
Advanced Optional Settings
Figure A-16. Advanced Optional Settings
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Placing a check on the temperature correction checkbox shown on the window, below calculation
becomes effective. If the checkbox is unchecked, the temperature correction calculation will not be
applied.
The following formula is used for temperature correction:
ETC(E,T) = E / TC1(T)
TC1(T) = a + b x T + c x T^2 + d x T^3
Where:
ETC (E, T):
Measurement Voltage after Temperature Correction
E:
Pyranometer Voltage Signal
TC1 (T):
Temperature Correction Efficient
T:
NTC Thermistor Measurement Temperature (See below figure)
a, b, c, d :
Parameters for Temperature Correction Efficient
Initial settings are as follows; these settings are the same as when the correction function is not used:
a: 1, b: 0, c: 0, d: 0
When applying the temperature correction function using pyranometer with NTC Thermistor (44031,
10kΩ) output wire, connect this output wire to terminals No. 3 and No.4.
Figure A-17. NTC Connection
Placing a check on the linearity correction checkbox shown on the window, below calculation becomes
effective.
If the checkbox is unchecked, the linearity correction calculation will not be applied.
The following formula is used for linearity correction:
I=(k1+(k2 x ETC(E,T)+(k3 x ETC(E,T)^2)+(k4 x ETC(E,T)^3))/S
Where:
I:
Irradiance after Linearity Correction
ETC (E, T) :
Measurement Voltage after temperature correction mentioned above
S:
Pyranometer Sensitivity
k1, k2, k3, k4 :
Linearity Correction Coefficient
Initial settings are as follows; these settings are the same as when the correction function is not used:
k1: 0, k2: 1, k3: 0, k4: 0
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8)
Changing to the Factory Default Configuration
By clicking the [Load Default] button, the configuration at the time of shipment is loaded on the Signal
Converter.
NOTE:
The default configuration is setup as followings:
Default setting will be loaded by just one click.
Basic Configuration
・Serial
No.:
0000000000000000
・Pyranometer Model No.:
MS-602
・Sensitivity
7.07
・Minimum Irradiance:
0
・Maximum Irradiance:
1600
・Offset Value:
0
Optional Configurations:
Linearity Correction
・k1:
1
・k2:
0
・k3:
0
・k4:
0
Temperature Correction
・a:
0
・b:
1
・c:
0
・d:
0
Load Default Button
Figure A-18.Factory Default Setting
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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3. Signal Converter Box
When MC-11 must be used in outdoor environment, optional metallic waterproof boxes with IP65 are
available.
There are converter box for 1 unit of Signal Converter (Converter Box 1) and box for 2 units of
Signal Converters (Converter Box 2), which you can select to meet your needs.
There are 3 cable glands
(for running cables through the side of box) provided on the Signal Converter Box 1, and 4 cable glands on
the Signal Converter Box 2.
Table A-4. Signal Converter Box Specifications
Items
Signal Converter Box 1
Signal Converter Box 2
1 unit
2 units
Number of Cable Glands
3
4
Applicable Cable Diameter
φ3 to 7mm
φ3 to 7mm
Material
Aluminum
Aluminum
Environmental Protection
IP65
IP65
Dimensions
90 x 90 x 60 (mm)
100x140x70 (mm)
Weight
465g
705g
Number of Signal Converter
Units in Converter Box
Figure A-19. Converter Box 1
Figure A-20. Converter Box 2
Table A-5. Packaging Contents
Signal Converter Box1
Items
Signal Converter Box2
Qty
Remarks
Items
Qty
Remarks
Converter Box1
1pc
For 1 converter
Converter Box2
1pc
For 2 converters
M4 Screws
4pcs
For Mounting Feet
M4 Screws
4pcs
For Mounting Feet
Mounting Feet
4pcs
Mounting Feet
4pcs
Blind Bar
3pcs
Blind Bar
4pcs
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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1)
Wiring
Open the box lid and use attached M4 screws (20mm length) to fix the Signal Converter inside the
Converter Box as shown below Figure A-21 (Maximum torque for screw is 0.4N・m.).
Converter Box 1
Converter Box 2
Figure A-21 Installing inside the Converter box
Refer to Figure A-22 for wiring the Signal Converter.
Run the sensor cable, power supply cable and communication cable through the cable glands and
connect them to the Signal Converter then close the cable gland cover securely.
For the cable glands
not used, insert the attached Blind Bar instead of cable then close the cable gland cover securely.
If Blind Bar is not used and/or cable gland cover is not securely closed, water may enter inside the
Converter Box and lead to malfunctions of Signal Converters and electrical leakage.
Measurement instrument and grounding line of the power supply should be connected to one of the
screws fixed on the base plate.
Connect the ground cable for the sensor and power supply to one of the screw holding the baseplate.
Moreover, the bottom surface shape of the Converter Box 1 and the shape of waterproof packing differ,
so make sure to check the direction of each part when fitting the lid.
Converter Box 1
Converter Box 2
Figure A-22 Wiring Example of Converter Boxes
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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2)
Dimensions
Figure A-23. Converter Box 1
Figure A-24. Converter Box 2
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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3)
Installation
When installing the Converter Box, use the attached mounting feet and M4 screws for fixing..
The installation feet hole pitches are as provided in Table A-6.
Table A-6. Mounting Feet Installation Pitch
Items
Left & Right Hole Pitch
Top & Bottom Hole Pitch
Converter Box1
109mm
62mm
Converter Box2
159mm
72mm
EKO INSTRUMENTS CO., LTD. 4-20mA Signal Converter MC-11 Instruction Manual Ver.4
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