Omron KM-N2-FLK Скачать руководство пользователя страница 47

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Basic use

3.3 How to read the measurements (continued)

* The units change automatically the maximum value is reached, with the display value on the unit returning to 0, but recording

continues. Accurate values can be obtained by using the communication function.

Order of

display

Item

Main display/numerals

Sub display/units

Remarks

Inter-wire voltage 1

0.0 to 99999999.9

V_R-s

: 3-phase 4-wire

None : 1-phase 2-wire

None : 1-phase 3-wire

V_R-s

: 3-phase 3-wire

None

: 1-phase 2-wire voltage
selected

None : 1-phase 3-wire composite

Inter-wire voltage 2

0.0 to 99999999.9

V_R-t

: 3-phase 4-wire

None : 1-phase 2-wire

V_R-t

: 1-phase 3-wire

V_R-t

: 3-phase 3-wire

None

: 1-phase 2-wire voltage
selected

None (Circuit A only

V_R-t

) : 1-phase 3-wire composite

Inter-wire voltage 3

0.0 to 99999999.9

V_s-t

: 3-phase 4-wire

None : 1-phase 2-wire

None : 1-phase 3-wire

V_s-t

: 3-phase 3-wire

None

: 1-phase 2-wire voltage
selected

None : 1-phase 3-wire composite

Frequency

45.0 to 65.0

Power factor

-1.00 to 1.00

Reactive power

-99999.999 to 999999.999

kVAR

Active energy

(export)

0.000 to 999999.999

-kwh

Units automatically switch*

1000.000 to 999999.999

-mwh

Cumulative total

reactive power

0.000 to 999999.999

kVARh

Units automatically switch*

1000.000 to 999999.999

mVARh

Reactive energy

(import)

0.000 to 999999.999

-kVRh

Units automatically switch*

1000.000 to 999999.999

-mVRh

Reactive energy

(export)

0.000 to 999999.999

+kVRh

Units automatically switch*

1000.000 to 999999.999

+mVRh

T1 Active energy

(import)

0.000 to 999999.999

kwh

Units automatically switch*

1000.000 to 999999.999

mwh

T2 Active energy

(import)

0.000 to 999999.999

kwh

Units automatically switch*

1000.000 to 999999.999

mwh

T3 Active energy

(import)

0.000 to 999999.999

kwh

Units automatically switch*

1000.000 to 999999.999

mwh

T4 Active energy

(import)

0.000 to 999999.999

kwh

Units automatically switch*

1000.000 to 999999.999

mwh

Содержание KM-N2-FLK

Страница 1: ...KM N2 FLK referred to as model KM N2 in this manual This Users Manual describes the functions performance and application methods needed for optimum use of the unit Please observe the following when...

Страница 2: ...Multi circuit metering 21 1 6 Multi address system 23 1 7 Mode configuration 24 2 Installation and wiring 2 1 Attaching the body of the unit 25 2 2 Wiring the CTs 27 2 3 Wiring for power and monitored...

Страница 3: ...lay unit conversion 65 5 4 Power saving mode 67 5 5 Warning for voltage miss wiring 68 5 6 Tariff feature 69 5 7 Change password 70 5 8 Checking software version 71 5 9 Initialize 72 6 Detailed settin...

Страница 4: ...values and performance values are based on stand alone tests using each separate condition and Omron does NOT warrant any rated values and performance values for multiple composite conditions 2 Refere...

Страница 5: ...ause physical injury or result in the loss of life b Applications that require high reliability For example supply systems for gas water and electricity etc 24 hour continuous operating systems financ...

Страница 6: ...program by other than Omron staff f Causes which could not have been foreseen with the level of science and technology at the time of shipping from Omron g Causes other than those above originating fr...

Страница 7: ...on Indicates a potentially hazardous situation which if not avoided will result in minor or moderate injury or there may be property damage Mandatory actions Indicates a general action that must be pe...

Страница 8: ...als while the power is being supplied Electric shock may occasionally occur Always make sure that the power to the circuit the CT is being attached to is turned OFF before connecting the CT Electric s...

Страница 9: ...before setting the device Do not pull cables Use only as described in the INSTRUCTION MANUAL Using the unit in a manner not described mayresult in the safety functionality of the device being comprom...

Страница 10: ...surface of the unit with a soft dry cloth Do not use chemicals including solvents such as thinners benzine or alcohol You cannot use the CT dedicated for use with the Omron KM series model series KM20...

Страница 11: ...the front cover and back cover of the manual Revision number Date of revision Reason for revision pages revised 01 A April 2016 First edition 02 July 2017 Description of operability confirmed converte...

Страница 12: ...ettings and each able to be allocated different communications addresses You can manage individual circuits as electricity monitors from a host system so it is easy to build a communications system an...

Страница 13: ...2 FLK the CE standard is supported including the use of CT and power monitors A cable to connect the CT and power monitor is separately required Breaker Operating power and metered voltage Power Monit...

Страница 14: ...Displays the menu number 7Status display OUTPUT Lights when setting pulse output 1 Lights when outputting pulse from OUT1 2 Lights when outputting pulse from OUT2 3 Lights when outputting pulse from O...

Страница 15: ...ase in units of ten right x1 increase in units of 1 ARS 485 communication terminals RS 485i 1 RS 485iterminal RS 485j 1 RS 485jterminal RS485i 2 RS 485iterminal for crossover wiring RS485j 2 RS 485jte...

Страница 16: ...ir functions continued Right side surface Name Description FTerminal layout label Label with information such as the model power voltage connector layout and serial number GTerminal panel cover Termin...

Страница 17: ...e written on this label 2 Output terminal block Secondary side current is output to this terminal block 3 Terminal cover Protective cover of the output terminal block 4 Fitting claw Claw that clamps t...

Страница 18: ...on this label 2 Output terminal block Secondary side current is output to this terminal block 3 Terminal cover Protective cover of the output terminal block 4 Fitting claw Claw that clamps the wire a...

Страница 19: ...ns Main unit 11 90 1 4 61 66 4 4 43 90 45 49 41 2 20 3 20 3 5 43 Units mm Front Right side surface Left side surface DIN rail Part A Part B Part A Dimensions of moving part Part A Dimensions of moving...

Страница 20: ...1 4 Dimensions continued Dedicated CT KM NCT E100A 250A KM NCT E500A 45 4 4 34 22 2 5 1 5 46 5 49 5 74 5 24 24 24 4 R8 5 CT INNER DIAMETER Units mm 57 2 5 1 5 40 5 22 4 4 36 4 R13 5 91 61 56 5 36 36 C...

Страница 21: ...ses branching off a 1 phase 3 wire switchboard You can measure 1 phase 2 wire by selecting the corresponding voltage Set 1 phase 3 wire composite to measure both the main 1 phase 3 wire switchboard an...

Страница 22: ...its B to D to increase the number of measurement points Settings for circuits B to D when measuring 2 circuits or more 56 you can meter electricity using the required number of circuits This are disab...

Страница 23: ...e circuits at once Refer to 6 Detailed settings for communications 74 for details about commands responses and address maps Caution Each circuit on this product needs to be allocated different communi...

Страница 24: ...ring mode and setting mode the circuit B to D items are displayed by switching the enable disable settings for each of the circuits to ON enabled The circuits indicated inside the dotted lines in the...

Страница 25: ...o that the terminals are hidden within the control board so that a person working on the unit will not be able to touch live wires 1 Fix the DIN rail to the installation location DIN rail recommended...

Страница 26: ...and fit the bodies next to each other Important Ensure that the DIN rails and the body are attached properly Looseness may cause the DIN rails body and wires to separate if vibrations or impacts occu...

Страница 27: ...nd wire types Measuring circuits Circuit A Circuit B Circuit C Circuit D 3 phase 4 wire 3P4W CT1 CT2 CT3 1 phase 2 wire 1P2W CT1 CT2 CT3 CT4 1 phase 3 wire 1P3W CT1 CT2 CT3 CT4 3 phase 3 wire 3P3W CT1...

Страница 28: ...he wiring confirm that the wire is fixed securely The guideline of the maximum wiring length between the main unit and CT is as follows The limit of the wiring length can also be calculated by the fol...

Страница 29: ...beled U O W or L1 N L2 in some cases To wire the voltage input terminal loosen the 3 5mm screw on the terminal panel push the wire completely into the terminal and fix in place with the crimping termi...

Страница 30: ...and energy correctly if you fail to do so For the wiring for the power and measured voltage use 24 to 14 AWG cross section surface area of 0 2 to 2 0mm2 electrical wire and ring or U shaped crimp con...

Страница 31: ...se if measuring 1 phase 2 wire Attach to the R phase and T phase if measuring 1 phase 3 wire or 3 phase 3 wire Attach to the R phase S phase and T phase if measuring 3 phase 4 wire Refer to 2 7 Wiring...

Страница 32: ...n the release hole Refer to Cautions when connecting the Push In Plus terminal RS 485 communication terminal and pulse output terminal 34 for details about wiring and connections Terminal number Termi...

Страница 33: ...erminal 34 when wiring Do not directly connect an external power source to OUT or COM Make sure the load is connected For wiring to the pulse output terminals use 24 to 14 AWG cross section surface ar...

Страница 34: ...thin use a flat blade screwdriver in the same way as when connecting stranded wire Connecting Stranded Wires Use the following procedure to connect the wires to the terminal block 1 Hold a flat blade...

Страница 35: ...e following procedure to remove wires from the terminal block The same method is used to remove stranded wires solid wires and ferrules 1 Hold a flat blade screwdriver at an angle and insert it into t...

Страница 36: ...elease hole Refer to Cautions when connecting the Push In Plus terminal RS 485 communication terminal and pulse output terminal 34 for details about wiring and connections Terminal number Terminal nam...

Страница 37: ...B to D when measuring 2 circuits or more 56 for details If the communications address exceeds 99 when multi circuit metering the value is invalid If the host device you are using does not have its ow...

Страница 38: ...ne circuit as shown in the following diagram For 1 phase 2 wire As shown below 1 phase 2 wire can measure a maximum of 4 circuits The CT must be attached to the L phase R S T N Power side Load Circuit...

Страница 39: ...R phase and the T phase For 3 phase 3 wire As shown below 3 phase 3 wire can measure a maximum of 2 circuits Use CT1 CT2 when measuring only 1 circuit The CT must be attached to the R phase and the T...

Страница 40: ...se For 1 phase 3 wire composite The 1 phase 3 wire circuit and the 1 phase 2 wire branching off from it are measured at the same time With this connection a setting is required according to which of R...

Страница 41: ...wn on the sub display and all of the LEDs light After this the measuring mode is moved to automatically and the active energy import kWh for circuit A is displayed Important Before turning on the powe...

Страница 42: ...ve to each mode Switching from measuring mode to communication setting mode Command sent COMM MODE displayed COMM MODE is displayed while in communication setting mode Switching from communication set...

Страница 43: ...moving from the measuring mode to the setting mode you need to enter the password that has been set The default password is 0001 You can set a password of 4 numerals between 0000 and 9999 Change the p...

Страница 44: ...layed if you have enabled the circuit settings 56 MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE 3 phase 4 wire 3P4W 1 phase 2 wire 1P2W 1 phase 3 wire 1P3W 3 pha...

Страница 45: ...Measurement display list 46 for details about measuring items Display of CTs used The measurements are shown for each of the circuits in the measuring mode The CTs being used by each circuit are displ...

Страница 46: ...phase 2 wire voltage selected None Circuit A only A_3 1 phase 3 wire composite 5 Current 3 0 000 to 999999 999 A_T 3 phase 4 wire None 1 phase 2 wire voltage selected A_T 1 phase 3 wire A_T 3 phase 3...

Страница 47: ...3 phase 3 wire None 1 phase 2 wire voltage selected None 1 phase 3 wire composite 12 Frequency 45 0 to 65 0 Hz 13 Power factor 1 00 to 1 00 PF 14 Reactive power 99999 999 to 999999 999 kVAR 15 Active...

Страница 48: ...ettable 0 000 to 999999 999 kVRh flashes Units automatically switch 1000 000 to 999999 999 mVRh flashes 27 Reactive energy export resettable 0 000 to 999999 999 kVRh flashes Units automatically switch...

Страница 49: ...l setting items for the circuits Common CMMN Setting items common to all of the circuits communication pulse output etc Others ETC Settings for initializing resetting cumulative values etc MODE MODE M...

Страница 50: ...switch the setting items Refer to Setting item list 51 for details about all of the setting items E R I W s r d d a H W o w 2 p 1 1 a 1 o 2 A 7 A A 1 0 3 A 4 A E R I W h W O V I T C A W 2 P 1 1 B 7 b...

Страница 51: ...the primary side of the CT to be connected Set CT individually B5 Voltage assignment V_R V_T V_R T V SET V_R Set the voltage phase for 1 phase 2 wire circuits when 1P2W2 is selected B6 Pulse output ON...

Страница 52: ...y which active energy is multiplied for each circuit 08 Conversion display units 3 places XXX Each place 0 to 9 A to Z _ CHAR CO2 Set the units for the conversion value using any 3 characters 09 Pulse...

Страница 53: ...ng items 54 Phase and wire type CT secondary side current CT primary side current Communication address 37 Pulse output ON OFF Circuit B to D setting items 56 Circuit ON OFF CT secondary side current...

Страница 54: ...e end at the left the cursor moves to the right end 4 The password is verified when you press the ENTER key and OK is displayed 5 The screen then moves to the settings mode and the SET MODE screen is...

Страница 55: ...ss the keys to change the value to 50 Press the MODE key to move one place to the left If you press the MODE key on the end at the left the cursor moves to the right end 4 Press the ENTER key to confi...

Страница 56: ...e automatically set as follows according to the value on the rotary switch Caution If the communications address exceeds 99 when multi circuit metering the value is invalid Phase and wire type Communi...

Страница 57: ...t ON 4 Press the ENTER key to confirm your selection 2 Set the CT secondary current for the circuits enabled from B to D Ex set the CT secondary current for circuit C to 1A 1 From the circuit C settin...

Страница 58: ...enter the setting mode 3 Press the keys to select ON 4 Press the ENTER key to confirm your selection The MENU No for allocating pulse terminals for circuits B to D are circuit B B6 circuit C C6 and ci...

Страница 59: ...n moves automatically to the common settings items and Protocol MENU 00 is displayed 2 Press the ENTER key to enter the setting mode 3 Press the keys to select COMPF 4 Press the ENTER key to confirm y...

Страница 60: ...tocol is CompoWay F 1 Press the MODE key to move to the common settings CMMN category display screen 2 From the common setting items press the keys to move to Stop bit length MENU 03 3 Press the ENTER...

Страница 61: ...he setting can be changed in units of 1ms The default value is 20ms 1 Press the MODE key to move to the common settings CMMN category display screen 2 From the common setting items press the keys to m...

Страница 62: ...due to the unit being exceeded again Output unit is exceeded within the OFF sustained width Action when error occurs Pulse is output within the time of the OFF sustained width Set the pulse output uni...

Страница 63: ...o the setting mode 1 Press the MODE key to move to the settings category display screen for circuit C 2 From the circuit C setting item press the keys to move to Voltage assignment MENU C5 3 Press the...

Страница 64: ...items press the keys to move to VT ratio MENU 06 3 Press the ENTER key to enter the setting mode The second decimal place of the setting value in the main display flashes 4 Press the keys to change th...

Страница 65: ...to move to the common settings CMMN category display screen 2 From the common setting items press the keys to move to Conversion rate MENU 07 3 Press the ENTER key to enter the setting mode The third...

Страница 66: ...ODE key on the end at the left the cursor moves to the right end 5 Press the ENTER key to confirm your change Caution Use 3 characters being alphanumeric characters or symbols for the conversion displ...

Страница 67: ...enter your password to switch to the setting mode 1 Press the MODE key to move to the common settings CMMN category display screen 2 From the common setting items press the keys to move to Automatic L...

Страница 68: ...wer is a negative value the error is Active power is a negative value If the frequency goes out of the range between 45 and 65Hz the error is Input frequency error warning Information If the alarm LED...

Страница 69: ...f can only be changed from the communication settings 74 Set the tariff function Ex set to OFF If a measured value is displayed press and hold the MODE key and enter your password to switch to the set...

Страница 70: ...eft the cursor moves to the right end 5 ONCE AGAIN is displayed when you press the ENTER key 6 The screen to enter the password the second time is displayed 7 Input the password you entered in 4 3060...

Страница 71: ...nd enter your password to switch to the setting mode 1 Press the MODE key to move to the other settings ETC category display screen Next the display automatically transitions to the Check software ver...

Страница 72: ...a measured value is displayed press and hold the MODE key and enter your password to switch to the setting mode 1 From the circuit A setting items press the keys to move to Active energy reset MENU A7...

Страница 73: ...a measured value is displayed press and hold the MODE key and enter your password to switch to the setting mode 1 Press the MODE key to move to the other settings ETC category display screen 2 From th...

Страница 74: ...nsmission procedure The host device a computer for example sends the command frame and model KM N2 sends the response frame that corresponds to the command content So 1 response frame is sent in respo...

Страница 75: ...address of this product Figures in hexadecimal format between H 01 to H 63 01 to 99 can be set Specify H 00 to communicate to all at the same time There will be no response if this is specified howeve...

Страница 76: ...egister and the next byte of data return that result to the CRC register and repeat step 3 6 The calculated result the value of the CRC register is appended to the message starting from the lower byte...

Страница 77: ...ording to commands 08 H 08 Echo back test Echo back test is performed Error code Name Description Error detection Priority H 01 Function code error Using an unsupported function code 1 H 02 Variable a...

Страница 78: ...setting mode Also measuring continues even while in the setting mode Command frame Start reading address Specify the address for the measurement value or setting data you want to read Refer to 6 4 Add...

Страница 79: ...the calculation 76 Command Response example The following is an example of reading voltage 1 Communication address When H 01 Command Response Commu nication address Function code Byte Counter Data 1...

Страница 80: ...Start writing address Specify the address for setting data you want to write Refer to 6 4 Address map 98 for the address Number of elements Specify the number of pieces of data that you want to write...

Страница 81: ...lculation 76 Command Response example The following shows an example of writing when changing the phase and wire type to 1 phase 2 wire Communication address When H 01 Address H 2000 Written data H 00...

Страница 82: ...decimal numbers Commu nication address Function code Start writing address Written data CRC 16 H 06 H FF H FF Fixed Fixed 1 1 2 2 2 Commu nication address Function code Start writing address Written d...

Страница 83: ...address Set 0000 as the address for the echo back test Test data This is any data in 2 byte HEX format Commu nication address Function code Start writing address Written data CRC 16 01 06 FFFF 0300 89...

Страница 84: ...for the communication frame H 02 Make sure you set this code as the first byte Communication address Specify the communications address of this product You can set a number between 00 and 99 or XX up...

Страница 85: ...ddress Exit code Command text BCC STX 0 0 ETX Fixed Fixed 1 2 2 2 1 1 Exit code Name Description Error detection Priority 00 Normal end This indicates that the command ended normally and that there wa...

Страница 86: ...the sub request code SRC and the data required by these and these are transferred Service request PDU Continuing on from the above MRC and SRC main response codes MRES and sub response codes SRES are...

Страница 87: ...e parameter values for various settings MRC SRC Service name Processing 01 01 Read variable area Variable area is read 02 01 Read parameter area Parameter area is read 02 02 Write parameter area The p...

Страница 88: ...ough 3 1003 Mismatched element and data numbers There is a mismatch between the number of elements and the number of pieces of data 6 1100 Parameter error The parameter value is unsupported 8 1101 Are...

Страница 89: ...id addresses of the variable area then if the number of data up to the end of the end address is within the range specified by the number of elements reading is done and the end is normal In this case...

Страница 90: ...nd Response This product converts measured values to hexadecimal without decimal points for response H 0000040D would be 1037 in decimal H 02 00 00 0 01 01 C0 0000 00 0002 H 03 H 42 STX Commu nication...

Страница 91: ...e number of elements reading is done and the end is normal In this case the number of data read will be fewer than the number of elements specified in the command Further if the start reading address...

Страница 92: ...and wire type is 1 phase 2 wire H 00000000 is read The communications address will be H 0000000A 10 decimal H 02 10 00 0 02 01 C000 1000 8002 H 03 H 49 STX Commu nication address Sub address SID MRC...

Страница 93: ...eds the valid addresses of the variable area then if the number of data up to the end of the end address is within the range specified by the number of elements writing is done and the end is normal I...

Страница 94: ...if the model doesn t take up 10 bytes For example This will be as follows for model KM N2 FLK Buffer size The buffer size 230 is read as 00E6 fixed value Response code Refer to List of response codes...

Страница 95: ...appear as follows Displayed as 01 in the PDU MRC SRC 0 6 0 1 2 2 MRC SRC Response code Operational state Related information 0 6 0 1 2 2 4 2 2 Operational state Description 00 The unit is measuring wi...

Страница 96: ...est is performed Service request PDU Service response PDU normal Test data Set any test data within the range 0 to 200 Response code Refer to List of response codes for details about each response cod...

Страница 97: ...Response code Refer to List of response codes for details about each response code 88 MRC SRC Instruction code Related information 3 0 0 5 2 2 2 2 MRC SRC Response code 3 0 0 5 2 2 4 Instruction code...

Страница 98: ...0012 0009 Reactive power Var R 0014 000A Voltage V1 V2 V H 00000000 to H 0098967F 0 to 9999999 10 times the voltage R 0016 000B Voltage V1 V3 V R 0018 000C Voltage V2 V3 V R 0200 0100 Active energy i...

Страница 99: ...ve energy import not resettable kWh R 0240 0120 Active energy import resettable Wh R 0242 0121 Active energy export resettable Wh R 0244 0122 Reactive energy import resettable Varh R 0246 0123 Reactiv...

Страница 100: ...de current H 00000000 1A H 00000001 5A R W 2016 100B CT primary side current H 00000000 to H 0001869F 0 to 99999 1 times the current R W 2200 1100 Common settings Protocol H 00000000 CompoWay F H 0000...

Страница 101: ...1A 110D Tariff ON OFF H 00000000 OFF H 00000001 ON R W 221C 110E Current tariff H 00000000 T1 H 00000001 T2 H 00000002 T3 H 00000003 T4 R W 2400 1200 Model 1 KM N The model is shown in ASCII code with...

Страница 102: ...in the rated ranges VR open phase warning The voltage has not reached the rated value A VR There may be an issue such as the wiring to the voltage input terminal being loose so that voltage does not r...

Страница 103: ...nnected Connect the CT to the main unit Also check if the CT has become separated from the electric wire 27 Is the connection positioning of the measuring circuits and the CT terminals correct Circuit...

Страница 104: ...4 corresponds to circuits C and D 56 Has the input exceeded the input range of the CT Check the secondary current and primary current of the CTs you are using and use CTs that have appropriate rated c...

Страница 105: ...maximum number of units you can connect when the protocol is Modbus is 99 units and when the protocol is CompoWay F the maximum is 31 The parent device is not included in either of these numbers 36 H...

Страница 106: ...AC2200V for 1 minute Insulation resistance 1 Between electronic circuitry and case 20M max at DC500V mega 2 Between the set of power and voltage inputs and the set of communication terminals and puls...

Страница 107: ...maximum of 2 circuits Connectable CTs Generic CT secondary rating 1A 5A CT secondary side rated current 1A Maximum current for CT secondary side 6A Item Description Pulse output Active energy Number o...

Страница 108: ...In 90 minutes 0 2 In Rated load 1 VA Insulation resistance 100M min at DC500V mega between core and all output terminals Dielectric strength voltage AC2300V 1 minute between core and all output termi...

Страница 109: ...101011 43 2B i 0001100 12 C FF 0101100 44 2C 0001101 13 D CR 0101101 45 2D 0001110 14 E SO 0101110 46 2E 0001111 15 F SI 0101111 47 2F 0010000 16 10 DEL 0110000 48 30 0 0010001 17 11 DC1 0110001 49 31...

Страница 110: ...001011 75 4B K 1101011 107 6B k 1001100 76 4C L 1101100 108 6C l 1001101 77 4D M 1101101 109 6D m 1001110 78 4E N 1101110 110 6E n 1001111 79 4F O 1101111 111 6F o 1010000 80 50 P 1110000 112 70 p 101...

Страница 111: ...following are some examples of 14 segment displays and 7 segment displays as shown on the LCD of this product N E D C B A J I H G F M L K O Y R Q P W V U T S Z X 5 4 3 2 1 0 9 8 7 6 1 2 3 4 5 6 7 8 9...

Страница 112: ...IL 60169 U S A Tel 1 847 843 7900 Fax 1 847 843 7787 Regional Headquarters OMRON EUROPE B V Wegalaan 67 69 2132 JD Hoofddorp The Netherlands Tel 31 2356 81 300 Fax 31 2356 81 388 Contact www ia omron...

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