Yokogawa DX1000N User Manual

Service

Yokogawa Electric Corporation

Manual

Daqstation DX1000/DX1000N/DX2000

SM 04L41B01-01E

4th Edition

Important Notice to the User

• This manual contains information for servicing YOKOGAWA’s DX1000, DX1000N, and

DX2000. Check the serial number to conrm that this is the correct service manual for

the instrument to be serviced. Do not use the wrong manual.

•

Before any maintenance and servicing, read all safety precautions carefully.

• Only properly trained personnel may carry out the maintenanc described in this service manual.

• Do not disassemble the instrument or its parts, unless otherwise clearly permitted by this service manual.

• Do n

• In principle, Yokogawa Electric Corporation (YOKOGAW

•

• All reasonable efforts have been made to assure the accuracy of the content of

•

ot replace any part or assembly, unless otherwise clearly permitted by this service

manual.

other than those listed in the customer maintenance parts list in this service manual (mainly modules and assemblies). Therefore if an assembly fails, the user should replace the whole assembly and not components within the assembly (see “Note”). If the user attempts to repair the instrument by replacing individual components within the assembly, YOKOGAWA assumes no responsibility for any consequences such as defects in instrument accuracy, functionality, reliability, or user safety hazards.

YOKOGAWA does not of

that contained in this service manual.

this service manual. However, there may still be errors such as clerical errors or omissions. accuracy or contents of this service manual, nor for the consequences of any errors.

or by any means without the express written prior permission of YOKOGAW contents of this manual are subject to change without notice.

e and servicing

A) does not supply parts

fer more detailed maintenance and service information than

YOKOGAWA assumes no responsibility of any kind concerning the

A. The

Trademark

Revisions

Note

YOKOGAWA instruments have been designed in a way that the replacement of electronic parts

can be done on an assembly (module) basis by the user. YOKOGAWA instruments have also

been designed in a way that troubleshooting and replacement of any faulty assembly can be

done easily and quickly. Therefore, YOKOGAWA strongly recommends replacing the entire

assembly over replacing parts or components within the assembly. The reasons are as follows:

• The instruments use high-performance microprocessors, large scale CMOS gate arrays,

and surface-mount components to provide state-of-the-art performance and functions.

• Repair of components can only be performed by specially trained and qualified maintenance

personnel with special highly-accurate tools, including costly ones.

• When taking the service life and cost of the instruments into consideration, the replacement

of assemblies offers the user the possibility to use YOKOGAWA instruments more effectively

and economically with a minimum in downtime.

• Adobe, Acrobat, and PostScript are trademarks of Adobe System Incorporated.

• For purposes of this manual, the ™ and ® symbols do not accompany their respective trademark names or registered trademark names.

• Company and product names that appear in this manual are trademarks or registered trademarks of their respective holders.

1st Edition: Apr. 2006 2nd Edition: May 2007 3rd Edition: Mar. 2009 4th Edition: Jun. 2010

SM 04L41B01-01E

Introduction

This manual contains information for servicing YOKOGAWA’s DX1000, DX1000N, and DX2000.

This service manual is to be used by properly trained personnel only. To avoid personal injury, do not perform any servicing unless you are qualified to do so. Refer to the safety precautions prior to performing any servicing. Even if servicing is carried out according to this service manual, or by qualified personnel, YOKOGAWA assumes no responsibility for any result occurring from that servicing.

Safety Standards and EMC Standards

The DX conforms to IEC safety class I (provided with terminal for protective grounding), Installation Category II, Measurement Category II (CAT II), and EN61326-1 (EMC standard), class A (use in a commercial, industrial, or business environment). The DX is designed for indoor use.

Safety Precautions

The general safety precautions described here must be observed during all phases of operation. If the DX is used in a manner not described in this manual, the protection provided by the DX may be impaired. Yokogawa Electric Corporation assumes no liability for the customer’s failure to comply with these requirements.

WARNING

• Use the Correct Power Supply

Ensure that the source voltage matches the voltage of the power supply before

turning ON the power. In the case of a desktop type, ensure that it is within the maximum rated voltage range of the provided power cord before connecting the power cord.

•

Use the Correct Power Cord and Plug (Desktop Type)

To prevent electric shock or fire, be sure to use the power cord supplied by

YOKOGA protective ground terminal. Do not disable this protection by using an extension cord without protective earth grounding.

•

Connect the Protective Grounding Terminal

Make sure to connect the protective grounding to prevent electric shock before

turning ON the power.

The power cord that comes with the desktop type is a three-pr

cord. Connect the power cord to a properly grounded three-prong outlet.

• Do Not Impair the Protective Grounding

Never cut off the internal or external protective grounding wire or disconnect the

wiring of the protective grounding terminal. Doing so invalidates the protective functions of the instrument and poses a potential shock hazard.

•

Do Not Operate with Defective Protective Grounding

Do not operate the instrument if the protective grounding might be defective.

Also, make sure to check them before operation.

WA. The main power plug must be plugged into an outlet with a

ong type power

• Do Not Operate in an Explosive Atmosphere

“Handle with care.” To avoid injury and damage to the instrument, the operator must refer to the explanation in the manual.

Protective ground terminal

Functional ground terminal (do not use this terminal as a protective ground terminal.)

Alternating current

ON (power)

OFF (power)

Direct current

WARNING

Calls attention to actions or conditions that could cause serious or fatal injury to the user, and precautions that can be taken to prevent such occurrences.

Calls attentions to actions or conditions that could cause light injury to the user or damage to the instrument or user’s data, and precautions that can be taken to prevent such occurrences.

CAUTION

Do not operate the instrument in the presence of flammable liquids or vapors.

Operation in such an environment constitutes a safety hazard.

Prolonged use in a highly dense corrosive gas (H

malfunction.

• Do Not Remove Covers

The cover should be removed by YOKOGAWA

Opening the cover is dangerous, because some areas inside the instrument have high voltages.

•

Ground the Instrument before Making External Connections

Connect the protective grounding before connecting to the item under

measurement or control unit.

• Damage to the Protection

Operating the instrument in a manner not described in this ma

the instrument’s protection.

• Pull Out the Inner Instrument Correctly

Pull out the inner instrument correctly according the instruction

Out the Inner Instrument (DX1000N)” in this manual.

Safety Symbols Used on Equipment and in Manual

S, SOx, etc.) will cause a

’s qualified personnel only.

nual may damage

s given in “Pulling

Conventuins Used in Manual

SM 04L41B01-01E

iii

SM 04L41B01-01E

Overview of This Manual

This manual is meant to be used by qualified personnel only. Make sure to read the safety precautions at the beginning of this manual as well as the warnings and cautions contained in the chapters relevant to any servicing you may be carrying out.

This manual contains the following chapters.

Chapter 1

Describes the principles of operation of the instrument.

Chapter 2 Troubleshooting

Lists problems that can occur and gives corrective

Chapter 3 Testing

Gives procedures for testing the characteristics of the instrument.

Chapter 4 Adjustments

Explains how to adjust the instrument.

Chapter 5 Schematic Diagram

Provides a system conguration diagram.

Chapter 6 Customer Maintenance Parts List

Contains exploded views and a list of replaceable parts.

Chapter 7 Replacing Parts

Describes how to replace parts. Also explains how to pull out the Inner

Specifications are not included in this manual. For specifications, refer to the DX1000/ DX1000N User’s Manual (IM 04L41B01-01E) and the DX2000 User’s Manual (IM 04L42B01-01E).

Principles of Operation

actions.

Instrument of the DX1000N.

Revision History

Edition Description

2 Addition and improvements to functionality: 24 VDC/AC power supply (/P1 option) 3 Addition and improvements to functionality: PROFIBUS-DP (/CP1 option) and others

Change of parts : LCD for the DX2000, CF assembly The size of the CF card supplied has been changed to 128 MB.

4 Compatible with CMPL04L41B01-01E 11th Edition, CMPL04L42B01-01E 11th Edition,

and CMPL04L43B01-01E 11th Edition.

Important Notice to the User ..............................................................................................................i

Trademark ..........................................................................................................................................i

Revisions ...........................................................................................................................................i

Introduction ....................................................................................................................................... ii

Safety Standards and EMC Standards .............................................................................................ii

Safety Precautions ............................................................................................................................ ii

Safety Symbols Used on Equipment and in Manual ........................................................................ iii

Conventuins Used in Manual ........................................................................................................... iii

Overview of This Manual .................................................................................................................iv

Chapter 1 Principles of Operation

1.1 Principles of Operation ........................................................................................................ 1-1

Chapter 2 Troubleshooting

2.1 Failure Analysis Flow Chart ................................................................................................. 2-1

2.2 Troubleshooting Checklist .................................................................................................... 2-4

Chapter 3 Testing

3.1 Acceptance Test .................................................................................................................. 3-1

3.2 Self Diagnostic Test ............................................................................................................. 3-2

3.3 Performance Test .......................................................................................................

Test Environment ......................................................................................................

Test Instruments ......................................................................................................

Instrument Operation ........................................................................................................... 3-3

ests ......................................................................................................

3.4 Test Procedures .......................................................................................................

Insulation Resistance .......................................................................................................

Protective Grounding ........................................................................................................... 3-4

Withstand Voltage ................................................................................................................

Measurement Accuracy .......................................................................................................

Reference Junction Compensation Accuracy ......................................................................

Battery Backup ......................................................................................................

Pulse Input Function ............................................................................................................ 3-9

.............................. 3-3

.......... 3-3

........... 3-3

............ 3-3

............ 3-4

.... 3-4

3-5 3-6 3-8

.............. 3-8

Chapter 4 Adjustments

4.1 Before Making Adjustments ................................................................................................. 4-1

Environment ......................................................................................................................... 4-1

Instrument Operation ........................................................................................................... 4-1

Note

.....................................................................................................................................

4.2 Adjusting the A/D Converters ...............................................................................................

4-1 4-2

Chapter 5 Schematic Diagram

5.1 Schematic Diagram (DX1000/DX1000N) ............................................................................ 5-1

5.2 Schematic Diagram (DX2000) ............................................................................................. 5-2

SM 04L41B01-01E

Contents

Chapter 6 Customer Maintenance Parts List

6.1 Customer Maintenance Parts List (DX1000) ....................................................................... 6-1

6.2 Customer Maintenance Parts List (DX1000N) ................................................................... 6-10

6.3 Customer Maintenance Parts List (DX2000) ..................................................................... 6-20

Chapter 7 Replacing Parts

7.1 Introduction .......................................................................................................................... 7-1

Replaceable Parts ............................................................................................................... 7-1

If Servicing is Required ........................................................................................................ 7-1

7.2

Recommended Replacement Periods for Worn Parts

7.3 Pulling Out the Inner Instrument (DX1000N) ....................................................................... 7-3

Notes ......................................................................................................

Testing ......................................................................................................

Procedures .......................................................................................................................... 7-4

......................................................... 7-2

............................. 7-3

........................... 7-4

SM 04L41B01-01E

Chapter 1 Principles of Operation

Data storage functions

Input section

Calculation function

Alarm

Communication function

(optional)

Input terminal

Scanner

A/D

CPU

External storage

Internal memory

Display

Remote control

Relay contact

(optional)

Pulse input

Transmitter power supply

(optional)

USB port

(optional)

Key

Easy text entry function

1.1 Principles of Operation

The following explains the principles of operation of the DX.

Block Diagram

Principles of Operation

Input Terminal Section

For connecting the measurement input signal wires. The terminals can be used for DC voltage, thermocouple, resistance temperature measurement, and contact input.

• The reference junction compensation circuit for thermocouples is built in.

• Proven transistor method for measuring the temperature of the terminals.

•

Metal core construction used in the internal printed circuit boards to equalize

• Input terminals removable.

Scanner Section

Switches the measured input signal (channel). The input signal switching section uses highly reliable solid state relays (SSR).

A/D Conversion Section

Converts analog signals to digital signals. It is a PWM (pulse width modulation) type converter. A/D converter calibration data is stored in an EEPROM. For the correspondence between input channels and A/D converters, see “Measurement Accuracy” on page 3-6.

SM 04L41B01-01E

temperature.

1-1

1.1 Principles of Operation

Saving Data

The capacity of the internal memory is either 80 MB (standard memory) or 200 MB (expansion memory). The CF card can be used as an external memory medium.

Display/Keys/Easy Text Entry

The DX uses an LCD display. You can control the DX with key operations. With Easy Text Entry (optional), you can control input by the remote control terminal.

Calculation

You can calculate the difference between two measurement inputs, perform linear scaling, square roots, calibration correction, and other computations.

Alarms

Alarm functions include upper limit alarm and lower limit alarm.

Other Functions

Serial/Ethernet Communication

The DX can communicate with other instruments via the Ethernet interface or the serial communication interface (optional).

Remote Control/Pulse Input

Record start and other operations can be controlled using external signals (with the optional remote control function). Counts the number of pulses for each measruement (with the pulse input option).

Relay Output

The DX can output alarms or FAIL/Status (optional).

Transmitter Power Supply Output

The DX can output 24 VDC for use as a power supply for transmitters (optional).

USB Port

Allows connection with USB keyboard and USB flash memory devices (optional).

1-2

SM 04L41B01-01E

See No. 5 of the checklist

in section 2.2.

See No. 1 of the checklist in section 2.2.

Has the backlight gone out due

to the LCD’s backlight saver?

Other than the display,

is the instrument functioning

normally?

Is an appropriate power

supply being input?

Is the power supply wired

correctly?

Is the power switch* ON?

Does the switch operate

normally?

Doesn’t function at all

(nothing is displayed)

Turn the switch ON correctly.

Wire it correctly.

Supply power of voltage and frequency that conforms to the specifications.

Restore the original brightness through key operation.

Try replacing the backlight.

YES

Has the instrument

been operated longer than the

recommended replacement period

for the backlight (5 years)?

Chapter 2 Troubleshooting

2.1 Failure Analysis Flow Chart

When a failure occurs, refer to the flow chart below for corrective actions.

Troubleshooting

SM 04L41B01-01E

2-1

2-2

SM 04L41B01-01E

Is the key lock set?

Have measures against

external noise been taken?

See No. 4 of the checklist.

See No. 2, 3, 7, 9, and 10 of the

checklist in section 2.2.

Release the key lock setting.

Keys do not operate correctly

If there is a problem with a display

screen or other function

YES

• Keep measurement input, communication, and other wires and cables away from noise sources.

• Be sure to ground all instruments.

• Use shielded cables for wiring measurement input, communication, and other circuits.

• Use isolation transformers on power supply lines.

• Insert filters on power supply lines.

• If inductive loads are used on alarm lines, insert surge absorbers in the lines.

Is the memory medium

(CF card) working normally?

Is it a recommended

device?

See No. 8 of the checklist

in section 2.2.

Replace the memory medium (CF card) with a new one.

Malfunction of external medium

(CF card)

YES

2.1 Failure Analysis Flow Chart

Note

If menu items required for screen menus or FUNC key menus are not displayed, check menu

customization settings.

Is the input wiring correct?

Is a constant ambient

temperature maintained?

Have appropriate measures

against noise been taken?

Are the range, span, and other

input settings appropriate?

Does the input meet the

input specifications?

Problems related to measurement

YES

Ensure that the input specifications are met.

Set them correctly.

• Enter range, span, and other input settings that are appropriate.

• When using the calibration correction function, check the settings for the calibration correction.

• Keep input wires and cables away from noise sources.

• Be sure to ground the recorder.

• Ground the measured object properly.

• For thermocouple measurement, insulate points of contact between the measured object and thermocouple.

• Use shielded cables for input wiring.

• Change the integral time setting of the A/D converter.

• Use moving average on the input.

• Attach input terminal covers.

• To avoid temperature changes in the vicinity of input terminals, keep fan ventilation holes clear, and keep hot objects away.

• Ensure correct polarity when wiring.

• Check that terminal wires are securely connected.

• Do not ground RTDs.

• Replace broken thermocouples.

• Do not connect other instruments with thermocouples in parallel.

If you must connect it in parallel,

consider using a double element thermocouple, refraining from using burnout detection, or implementing other measures.

• Use one earth connection when connecting the DX to another instrument.

Are the RJC

settings and TC, RTD type

settings correct?

See No. 6 of the checklist

in section 2.2.

YES

Are other instruments

connected in parallel?

YES

2.1 Failure Analysis Flow Chart

Troubleshooting

SM 04L41B01-01E

2-3

2-4

SM 04L41B01-01E

2.2 Troubleshooting Checklist

The table below describes the most common types of failures and their corrective actions.

Action

Check

Adjust

Replace

No. Phenomenon

The instrument doesn’t start

even though the power is ON

2 FAIL state

Abnormal functioning of

memory (backup)

Key operation

abnormality

LCD display

not normal

Large measurement error

Temperature measurement abnormal

Fluctuation

in measured values



 



 



Power supply cable connection/wiring - - - - - - -

MAIN POWER BOARD ASSEMBLY Power PBA 6-4 4 6-13 3 6-23 6



MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



SUB BOARD ASSEMBLY



MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



SUB BOARD ASSEMBLY



OPTION TERMINAL ASSEMBLY



Battery connection

Battery voltage (must be +3.0 V or more) MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



SUB BOARD ASSEMBLY



Check the FFCs (whether pulled out or damaged)

SW & Sensor BOARD ASSEMBLY



CONNECTION BOARD ASSEMBLY CONN. PBA 6-3 6 6-12 7 - -



MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



Check the FFCs (whether pulled out or damaged) MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



SUB BOARD ASSEMBLY



CONNECTION BOARD ASSEMBLY CONN. PBA 6-3 6 6-12 7 - -



Back Light Unit of LCD ASSEMBLY



LCD & INVERTER UNIT LCD 6-3 3 6-12 4 6-22 1



Keep input wires away from noise sources (through distance and shielding, etc.) Check that the input terminals are not disconnected from the instrument Check that the input terminal cover is not loose Check that the RJC (INT/EXT) setting is correct

AD SCANNER BOARD ASSEMBLY

Does the integral time setting of the A/D converter match the power supply frequency? Keep input wires away from noise sources (through distance and shielding, etc.)

Description

for key wiring

Part Name

Sub PBA EXP. BOOT

Option Terminal Assembly Battery Assembly

- - - - - - -

Sub PBA EXP. BOOT

- - - - - - -

Key Case Assembly

- - - - - - -

Sub PBA EXP. BOOT

Back Light Unit

- - - - - - -

AD-STD/ ISO

- - - - - - -

Refer to Chapter 6

DX1000 DX1000N DX2000

Page Item Page Item Page Item

6-4 13 6-13 15 6-23 19

6-6 4 6-16 4 6-26

14, 17 20, 23

6-4 14 6-13 16 6-23 20

6-4 13 6-13 15 6-23 19

6-3 14 6-12 20 6-22 4

6-4 13 6-13 15 6-23 19

6-3 3 6-12 4 6-22 3

6-4 22 6-13 26 6-23

40, 41 42, 43

No. Phenomenon

External media

functioning abnormally

Abnormal

communication

USB operation

abnormal

2.2 Troubleshooting Checklist

Action

Check

Adjust

Replace

Description



 



 

Is the memory medium (CF card) working normally? Check the FFC BOARD ASSEMBLY (whether pulled out or damaged)

MEDIA BOARD ASSEMBLY



SUB BOARD ASSEMBLY



MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



Check communication settings - - - - - - Check communication wiring/cables (whether pulled out or damaged) POWER TERM & COMM BOARD



ASSEMBLY MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



Are connected USB devices (USB memory and USB keyboard) operating normally? Check the FFC BOARD ASSEMBLY (whether pulled out or damaged) MEDIA BOARD ASSEMBLY



(front panel) POWER TERM & COMM BOARD



ASSEMBLY (rear panel)

SUB BOARD ASSEMBLY



MAIN BOARD ASSEMBLY Main PBA 6-4 12 6-13 14 6-23 18



*1: The table shows only the specific parts that must be replaced. When actually carrying out

replacement, the entire assembly that contains a part may have to be replaced.

*2: Flexible Flat Cable

for the MEDIA

Part Name

- - - - - - -

CF Assembly

Sub PBA EXP. BOOT

- - - - - - -

S/I-PWR Terminal

- - - - - - -

CF Assembly S/I-PWR Terminal

Sub PBA EXP. BOOT

Refer to Chapter 6

DX1000 DX1000N DX2000

Page Item Page I tem Page Item

6-4 26 - - 6-23 45

6-4 13 6-13 15 6-23 19

6-6 8, 17 6-16 8 6-26

6-4 26 - - 6-23 45

6-6 8, 17 6-16 8 6-26

6-4 13 6-13 15 6-23 19

Troubleshooting

27, 38

SM 04L41B01-01E

2-5

Chapter 3 Testing

3.1 Acceptance Test

This section describes the procedure to perform the acceptance test.

Read the preface to the user’s manual, “Checking the Contents of the Package”

and verify that you have all of the contents.

Make sure to understand the operating procedures as described in the user’s

manual.

Check each function using the user’s manual.

Read and implement section 3.2, “Self Diagnostic Test.”

Read and implement section 3.3, “Performance Test.”

Testing

SM 04L41B01-01E

3-1

3-2

SM 04L41B01-01E

3.2 Self Diagnostic Test

The DX is provided with complete self diagnostic functions to enhance reliability in measurement and serviceability. When you turn ON* the power, the DX will automatically execute the following types of diagnoses alternately and display the results. After these tests are completed, the recorder is ready for use.

* The DX1000N power supply switch is located inside the bezel. Disconnect then reconnect

the power supply, or open the bezel and operate the power supply switch (see section 7.3).

Main program (Flash ROM) test

Main RAM write/read test

A/D and A/D EEPROM test

Memory acquisition test (write test from Flash)

Ethernet module test

The table below shows the results of the self diagnostic tests when a problem is detected.

Display upon Error Likely Cause

Connection between MAIN BOARD ASSEMBLY and SUB BOARD

901

ROM failure.

902

RAM failure.

910

A/D memory failure for all input channels.

921

A/D calibration value error.

930 Memory acquisition

failure.

940 The Ethernet module

is down.

ASSEMBLY

Replace the SUB BOARD ASSEMBLY or MAIN BOARD ASSEMBLY

Connection between AD SCANNER BOARD ASSEMBLY and MAIN BOARD ASSEMBLY

Replace the AD SCANNER BOARD ASSEMBLY or MAIN BOARD ASSEMBLY

Connection between MAIN BOARD ASSEMBLY and SUB BOARD ASSEMBLY

Replace the SUB BOARD ASSEMBLY or MAIN BOARD ASSEMBLY

Replace the internal CF card

Check communication settings – – – – – – – Connection between POWER TERM & COMM BOARD ASSEMBLY and MAIN BOARD ASSEMBLY Check the communication cables and LINK LED illumination Replace the MAIN BOARD ASSEMBLY or POWER TERM & COMM BOARD ASSEMBLY

Refer to Chapter 6

Part Name

Sub PBA EXP.BOOT

Main PBA 6-4 12 6-13 14 6-23 18

– – – – – – –

AD-STD/ ISO Main PBA 6-4 12 6-13 14 6-23 18

– – – – – – –

Sub PBA EXP.BOOT

Main PBA 6-4 12 6-13 14 6-23 18 CF Assembly

– – – – – – –

Main PBA 6-4 12 6-13 14 6-23 18 S/I-PWR

Terminal

DX1000 DX1000N DX2000

Page Item Page Item Page Item

– – – – – –

6-4 13 6-13 15 6-23 19

6-4 22 6-13 26 6-23

6-4 13 6-13 15 6-23 19

6-4 26 – – 6-23 47

6-6 8,17 6-16 8 6-26

40, 41, 42, 43

27,38

3.3 Performance Test

Read the warning and cautions below before beginning tests.

Test Environment

Item Conditions

Ambient temperature 23 ±5°C Relative humidity 20 to 80% RH Atmospheric pressure 86 kPa-106 kPa

Power supply voltage

Power supply frequency Nominal frequency ±1% Power supply waveform Distortion factor of 5% or less DC power supply ripple Content ratio of 0.1% or less Vibration A value having negligible effects on the instrument Position Within ±3% of the specified position Interference Electrical field A value that does not affect the measured results Magnetic field A value that does not affect the measured results

Atmospheric pollutants

Other external effects

*1 Interference refers to common mode noise, series mode noise, power supply noise, and

*2 Other external effects include luminance, draft, ultrasonic waves, and radiation.

other phenomena in the signal line.

AC power supply 90 to 132 VAC, 180 to 250 VAC 24 V power supply 21.6 to 26.4 VAC/DC (/P1 option)

A value that does not affect the measured results

Levels of corrosive gasses, vapors, salts, and dust that do not affect the measured results. A value that does not affect the measured results

Testing

Test Instruments

Instrument Specifications

DC voltage generator Accuracy: ±0.005% of setting + 1 µV DMM Accuracy: ±0.005% of rdg + 1 µV Variable resistors Accuracy: 0.01% + 2 mΩ or better Insulation tester 500 VDC Withstand voltage tester 500 to 2300 VAC, 1000 VDC Function generator Accuracy: ±20ppm of setting for 100 Hz 0°C standard temperature device Accuracy: ±0.05°C Thermocouple (Type T) Calibrated

Instrument Operation

For operating procedures in setting mode and basic setting mode, see the following manuals.

• DX1000/DX1000N Operation Guide (IM 04L41B01-02E)

• DX1000/DX1000N User’s Manual (IM 04L41B01-01E)

•

DX2000 Operation Guide (IM 04L42B01-02E)

• DX2000 User’s Manual (IM 04L42B01-01E)

Tests

The following tests are explained.

• Insulation Resistance • Reference Junction Compensation Accuracy

• Protective Grounding • Battery Backup

• Withstand Voltage • Pulse Input Function (Option)

• Measurement Accuracy

SM 04L41B01-01E

3-3

3-4

SM 04L41B01-01E

3.4 Test Procedures

USB CF CARD

NO.

Do not remove the cover. Repair by trained personnel only.

Protective ground terminal

DX1000/DX1000N

Bezel attachment screw (left side)

DX2000

POWER

CF CARD

USB

Bezel attachment screw (left side)Protective ground terminal

Insulation Resistance

● TestProcedures

Perform a measurement with an insulation resistance meter and check whether the

results satisfy the reference values. Perform the measurement with the power switch turned ON.

Reference V

Protective Grounding

● TestProcedures

Perform a resistance measurement with a DMM (digital multimeter), and check

Reference Value

alue

Terminals Measured Reference Value Condition

Between the power and protective ground terminal Between the input and protective ground terminal

Between the Ethernet and protective ground terminal

Between RS-422/485 SG and RS-422/485 FG terminals

100 MΩ or more Short the L and N terminals.

100 MΩ or more Short all input terminals.

100 MΩ or more

Short all pins of the Ethernet terminal.

100 MΩ or more With the /C3 option.

whether the results satisfy the reference values.

Measured Location Reference Value

Between the protective ground terminal and bezel attachment screw (left side)

0.2 Ω or less

Withstand Voltage

3.4 Test Procedures

● TestProcedures

Perform the test with a withstanding voltage tester, and check whether the results

satisfy the reference values. Perform the measurement with the power switch turned ON.

est time: 1 minute

Tested Terminals

Between the power and protective ground terminals

Between the input and protective ground terminals

Between input terminals 1.0 kVAC 1 mA

Between relay contact output and protective ground terminals Between the remote control input and protective ground terminals Between pulse input and protective ground terminals Between 24 V transmitter power supply output and protective ground terminals

The b terminals on the following models are independent on all channels. Short the odd

and even channels of the A/+, B/-, and b terminals, and measure between odd and even

channels.

• DX1002, DX1002N, DX1004, DX1004N, DX2004, DX2008

With the /N1 or /N2 option.

•

Applied Voltage

2.3 kVAC 10 mA

0.5 KVAC 10 mA

1.5 kVAC 2 mA Short all input terminals.

1.6 kVAC 2 mA

1.0 kVDC 2 mA

500 VAC 10 mA

Maximum Allowable Leakage Current

Condition

When /P1 not installed (100–240 VAC). Short the L and N terminals. With /P1 (24 VAC/DC).

Short the L (+) and N (–) terminals.

Short the odd and even channels of the A/+, B/- terminals*, and measure between odd and even channels. With the /A1, /A2, /A3, /A4, /A5 /F1, or /F2 option. Short all relay contact output terminals.

With the /R1 option. Short all remote control input terminals.

With the /PM1 option. Short all pulse input terminals. With the /TPS2, /TPS4, or /TPS8 option. Short all 24 V transmitter power supply output terminals.

Testing

SM 04L41B01-01E

3-5

3-6

SM 04L41B01-01E

DC voltage generator

To the input terminals

−

Variable resistors

The resistance of three lead wires must be equal.

3.4 Test Procedures

Measurement Accuracy

● Overview

The measurement accuracy is tested using two different* integral times.

The measurement accuracy test is performed in one of the following ways.

● A/DConverterConfiguration

* But only one integral time is used when using the DX2000 with the /MC1 option.

• One representative channel for each A/D converter is tested, and the channel-tochannel error between the representative channel and other channels is tested (see next page).

* Choose any channel number for each A/D from those listed in the A/D converter

configuration table.

Ex.: With the DX1004, set channels 1 and 3 as representative channels.

• The measuring accuracy of all channels is tested separately.

Models

DX1002/DX1002N 125 ms 2CH 1 1-2 DX1004/DX1004N 125 ms 4CH 2 1-2, 3-4 DX1006/DX1006N 1 s 6CH 1 1-6 DX1012/DX1012N 1 s 12CH 1 1-12 DX2004 125 ms 4CH 2 1-2, 3-4 DX2008 125 ms 8CH 4 1-2, 3-4, 5-6, 7-8 DX2010 1 s 10CH 1 1-10 DX2020 1 s 20CH 2 1-10, 11-20 DX2030 1 s 30CH 3 1-10, 11-20, 21-30 DX2040 1 s 40CH 4 1-10, 11-20, 21-30, 31-40 DX2048 1 s 48CH 4 1-12, 13-24, 25-36, 37-48

Measurement Interval

Number of Channels

No. of A/Ds

Channel Number by A/D

● TestInstruments

Instrument Specifications

DC voltage generator Accuracy: ±0.005% of setting + 1 µV DMM Accuracy: ±0.005% of rdg + 1 µV Variable resistors Accuracy: 0.01% + 2 mΩ or better

● Setup

Set the input range of the channels under test, and the test range.

● TestProcedures

Warm up the instrument for thirty minutes before performing the test. Enter the input value determined for each range. Check whether the displayed

measured values satisfy the reference values.

+ 45 hidden pages