Yokogawa DR240 User Manual

Instruction	DR232/DR242
Manual	Hybrid Recorder
	(Expandable Type)

IM DR232-01E

IM DR232-01E

9th Edition

Foreword

Thank you for purchasing the YOKOGAWA Hybrid Recorder DR232 or DR242.

This User’s Manual contains useful information regarding the instrument’s functions and operating procedures, as well as precautions that should be observed during use. To ensure proper use of the instrument, please read this manual thoroughly before operating the instrument.

Keep the manual in a safe place for quick reference whenever a question arises. The following manual is provided with the instrument in addition to this manual.

Manual Name	Manual No.
DR231/DR232/DR241/DR242 Communication Interface	IMDR231-11E

Notes

•DARWIN is a system comprising a number of data-acquisition equipment components. In the course of system growth, new models, software, various input/output modules and optional features are added to the family to enhance the systems expandability and flexibility. You can check the versions of your equipment and software by referring to the style number (Sn) and release number (Rn) respectively which are shown on the nameplate of the main unit.

When configuring a system, you must confirm that the style number of each component unit and software meets the following requirements:

1 the style number of each input/output module must be the same as or lower than that of the main unit or subunit to which the module is connected.

2the release number of a dedicated software package must be the same or higher than the style number of the main unit or subunit where the package is installed and where it performs control.

Any equipment/software not meeting these requirements might have incompatible areas with your system configuration.

In this manual, equipment of style S8 is explained.

For unsupported functions as classified by the style number, see the next page.

•The contents of this manual are subject to change without prior notice as a result of improvements in the instrument’s performance and functions.

•Every effort has been made in the preparation of this manual to ensure the accuracy of its contents. However, should you have any questions or find any errors, please contact your nearest YOKOGAWA representative as listed on the back cover of this manual.

•Copying or reproduction of all or any part of the contents of this manual without YOKOGAWA’s permission is strictly prohibited.

Trademarks

DOS and Windows are registered trademarks of Microsoft Corporation.

IBM is a registered trademark of International Business Machines Corporation.

Revisions

1st Edition: January 1996 2nd Edition: February 1996 3rd Edition: June 1996

4th Edition: November 1996 5th Edition: March 1997 6th Edition: November 1997 7th Edition: November 1998 8th Edition: June 2000

9th Edition: October 2000

Disk No. RE04

9th Edition: October 2000 (YK)

All Rights Reserved, Copyright 1996 Yokogawa Electric Corporation

IM DR232-01E	1

Unsupported Functions As Classified by the Style Number

The following functions are not available for style number S1

•Computation function (including remote RJC)

•Saving and reading of measured data, computated data and set-up data (FDD function)

•Summer/Winter time

•RS-422-A/RS-485 cs£munication module

•Pulse input module

•mA, Strain and AC input module

•Extender module and Extender base

•Report function

•Ethernet module

•Digital input module

•Flag and group reset functions (for /M1 option)

•The measuring of active power and apparent power on CH3 to CH6 for power monitor module. The following functions are not available for style number S2

•Summer/Winter time

•RS-422-A/RS-485 communication module

•Pulse input nodule

•mA, Strain and AC input module

•Extender module and Extender base

•Report function

•Ethernet module

•Digital input module

•Flag and group reset functions (for /M1 option)

•The measuring of active power and apparent power on CH3 to CH6 for power monitor module. The following functions are not available for style number S3

•Pulse input module

•mA, Strain and AC input module

•Extender module and Extender base

•Report function

•Ethernet module

•Digital input module

•Flag and group reset functions (for /M1 option)

•The measuring of active power and apparent power on CH3 to CH6 for power monitor module. The following functions are not available for style number S4 and S5

•mA, Strain and AC input module

•Extender module and Extender base

•Report function

•Ethernet module

•Digital input module

•Flag and group reset functions (for /M1 option)

•The measuring of active power and apparent power on CH3 to CH6 for power monitor module. Products with style number S6 is not sold.

The following functions are not available for style number S7

•Ethernet module

•Digital input module

•Flag and group reset functions (for /M1 option)

•The measuring of active power and apparent power on CH3 to CH6 for power monitor module.

2	IM DR232-01E

Checking the Contents of the Package

Unpack the box and check the contents before operating the instrument. In case the wrong instrument or accessories have been delivered, or if some accessories are not present, or if they seem abnormal, contact the dealer from which you purchased them. Furthermore, please contact a Yokogawa representative to order any of parts as follows.

Main Unit DR232/DR242

Check that the model and suffix code given on the name plate are according to your order.

Model and Suffix Codes

Model	Suffix Code		Description
DR232	.......................		Hybrid recorder, desktop type
DR242	.......................		Hybrid recorder, panel-mount type
Memory	-0	....................	No memory
	-1	....................	3.5inch Floppy disk drive
Software		0 .................	Without data acquisition software
		2 .................	With data acquisition software
Input Type		-00 ............	Always “-00”
Power Supply		-1 .........	100-240VAC
Power Cord		D .........	3-pin inlet w/UL, CSA cable* (Part No. A1006WD)
		F .........	3-pin inlet w/VDE cable* (Part No. A1009WD)
		R .........	3-pin inlet w/SAA cable* (Part No. A1024WD)
		S .........	3-pin inlet w/BS cable* (Part No. A1023WD)
		W ........	3-pin inlet with screw conversion terminal**
		* For DR232 only
		**For DR242 only
Options		/M1 . Mathematical Func.
		/M3 . Report Func.
		/H1 ..	Internal illumination
		/D2 ..	deg F Display

NO. (Instrument Number), Style number (equipment) and Release number (software package)

Please refer to these numbers when contacting the dealer.

Subunit DS400/DS600

Check that the model and suffix code given on the name plate are according to your order.

Model and Suffix Codes

Model	Suffix Code	Description
DS400	.......................	4-module connection subunit
DS600	.......................	6-module connection subunit
Type	00 ...................	always 00
Power Supply -1 .............		100-240VAC
	-2 .............	12-28V DC
Power Cord	D .........	3-pin inlet w/UL, CSA cable (Part No. A1006WD)
	F .........	3-pin inlet w/VDE cable (Part No. A1009WD)
	R .........	3-pin inlet w/SAA cable (Part No. A1024WD)
	S .........	3-pin inlet w/BS cable (Part No. A1023WD)
	W ........	3-pin inlet with screw conversion terminal (when power supply suffix code is
		-1)
	Y .........	2-pin inlet with round-type connector (when power supply suffix code is -2)

NO. (Instrument Number) and Style number (equipment)

Please quote these numbers when contacting the dealer.

IM DR232-01E	3

Checking the Contents of the Package

Input Modules

Check that the model code given on the name plate is according to your order.

Model Codes

Model	Description
DU100-11	10-channel universal input module, screw type terminal
DU100-21	20-channel universal input module, screw type terminal
DU100-31	30-channel universal input module, screw type terminal
DU100-12	10-channel universal input module, clamp type terminal
DU100-22	20-channel universal input module, clamp type terminal
DU100-32	30-channel universal input module, clamp type terminal
DU200-11	10-channel DCV/TC/DI input module, screw type terminal
DU200-21	20-channel DCV/TC/DI input module, screw type terminal
DU200-31	30-channel DCV/TC/DI input module, screw type terminal
DU200-12	10-channel DCV/TC/DI input module, clamp type terminal
DU200-22	20-channel DCV/TC/DI input module, clamp type terminal
DU200-32	30-channel DCV/TC/DI input module, clamp type terminal
DU300-11	10-channel, mA-input module with screw terminals
DU300-12	10-channel, mA-input module with clamp terminals
DU400-12	Power monitor module for single-phase use
DU400-22	Power monitor module for three-phase use
DU500-12	10-channel, strain input module with 120-Ω bridge resistors
DU500-22	10-channel, strain input module with 350-Ω bridge resistors
DU500-32	10-channel, strain input module with NDIS terminals
DU600-11	10-channel, pulse input module with screw terminals
DU700-11	10-channel, digital input module with screw terminal

NO. (Instrument Number)

Please quote this instrument number when contacting the dealer.

I/O Terminal Modules

Check that model code given on the name plate is according to your order.

Model Codes

Model	Description
DT100-11	DI/DO module, screw type terminal
DT200-11	Alarm module (4 transfer contacts), screw type terminal
DT200-21	Alarm module (10 make contacts), screw type terminal
DT300-11	GP-IB module
DT300-21	RS-232-C module, D-sub terminal
DT300-31	RS-422-A/RS-485 module
DT300-41	Ethernet module

NO. (Instrument Number) and Style number (equipment)

Please quote these numbers when contacting the dealer.

4	IM DR232-01E

					Checking the Contents of the Package
Standard Accessories
	Name		Part No.	Q’ty	Description
1.		Power cord	see page 2, 3	1
2.		Fuse	A1350EF	1	Timelag 2.5A 250V, for DR232/242, in case of
					DR232 located in fuse holder
3.		DC power supply	A1105JC	1	Only for the subunit models whose power supply
		terminal connector			code is “-2”
4.		Ribbon cassette	B9627AZ	1	10 colors (for DR232/242)
5.		Chart paper	B9627AY	1	Length: 30m, 25mm grid (for DR232/DR242)
6.		Mounting brackets	B9900CW	1 x 2	for DR242
7.		Clamp filter	A1197MN	1	When power supply code is -1
8.		User’s Manual	IMDR232-01E	1	this manual (for DR232/242)
9.		User’s Manual	IMDR231-11E	1	Communication Interface manual (for DR232/242)
	10. Data acquisition software		DP120-13		Only for models whose software code is “-2”

1.One of these power cord types is supplied according to the instrument's suffix code

		D		F	S	R
						8.
2.	3.	4.	5.	6.	7.	10.
						9.

IM DR232-01E	5

Name	Model	Description
Extender module	DV100-011
Extender base	DV100-012
Extension cable	DV200-000	Length: 0.5m
Extension cable	DV200-001	Length: 1m
Extension cable	DV200-002	Length: 2m
Extension cable	DV200-005	Length: 5m
Extension cable	DV200-010	Length: 10m
Extension cable	DV200-020	Length: 20m
Extension cable	DV200-050	Length: 50m
Extension cable	DV200-100	Length: 100m
Extension cable	DV200-200	Length: 200m
Extension cable	DV200-300	Length: 300m
Extension cable	DV200-400	Length: 400m
Extension cable	DV200-500	Length: 500m
Shunt resistance	DV300-011	10Ω, for screw
Shunt resistance	DV300-012	10Ω, for clamp
Shunt resistance	DV300-101	100Ω, for screw
Shunt resistance	DV300-102	100Ω, for clamp
Shunt resistance	DV300-251	250Ω, for screw
Shunt resistance	DV300-252	250Ω, for clamp
Rack mount kit	DV400-011	for DS400/600
Rack mount kit	DV400-013	for DR232
Power cable	DV400-051	between DR232/242 and DS400/600
Strain conversion cable	DV450-001
Cable adapter	DV250-001	For expanding cable
AC adapter	DV500-001	2-pin inlet w/UL, CSA cable (Part No. B9988YA) for
		DC100/DA100/DS400/DS600 DC power supply model
AC adapter	DV500-002	2-pin inlet w/VDE cable (Part No. B9988YB) for
		DC100/DA100/DS400/DS600 DC power supply model
AC adapter	DV500-003	2-pin inlet w/SAA cable (Part No. B9988YC) for
		DC100/DA100/DS400/DS600 DC power supply model
AC adapter	DV500-004	2-pin inlet w/BS cable (Part No. B9988YD) for
		DC100/DA100/DS400/DS600 DC power supply model

Optional Software

Name	Model	Description
DAQ 32	DP120-13	Windows 95/98 and Windows NT
DAQ 32 Plus	DP320-13	Windows 95/98 and Windows NT
Name	Part No.	Min. Q’ty	Description
Ribbon cassette	B9627AZ	1	10 colors
Chart paper	B9627RY	10	Length 30 m, grid 10mm
Checking the Contents of the Package	B9627AY	10	Length 30 m, grid 25mm
Optional Accessories

Spares

6	IM DR232-01E

Safety Precautions

This instrument is an IEC safety class I instrument (provided with terminal for protective grounding).

The following general safety precautions must be observed during all phases of operation, service and repair of this instrument. If this instrument is used in a manner not sepecified in this manual, the protection provided by this instrument may be impaired. Also, YOKOGAWA Electric Corporation assumes no liability for the customer’s failure to comply with these requirements.

The following symbols are used on this instrument.

To avoid injury, death of personnel	Alternating current.
or damage to the instrument, the
operator must refer to an explanation	ON(power).
in the User’s Manual or Service
Manual.	OFF(power).
Protective grounding terminal.

Function grounding terminal. This terminal should not be used as a “Protective grounding terminal”.

Make sure to comply with the following safety precautions. Not complying might result in injury, death of personnel or damage to the instrument.

WARNING

Power Supply

Ensure the source voltage matches the voltage of the power supply before turning ON the power.

Power Cord and Plug

To prevent an electric shock or fire, be sure to use the power cord supplied by YOKOGAWA. The main power plug must be plugged in an outlet with protective grounding terminal. Do not invalidate protection by using an extension cord without protective grounding.

Protective Grounding

Make sure to connect the protective grounding to prevent an electric shock before turning ON the power.

Necessity of Protective Grounding

Never cut off the internal or external protective grounding wire or disconnect the wiring of protective grounding terminal. Doing so poses a potential shock hazard.

Defect of Protective Grounding and Fuse

Do not operate the instrument when protective grounding or fuse might be defective.

Do not Operate in an Explosive Atmosphere

Do not operate the instrument in the presence of flammable liquids or vapors. Operation of any electrical instrument in such an environment constitutes a safety hazard.

Fuse

To prevent a fire, make sure to use fuses with specified standard(current, voltage, type). Before replacing the fuse, turn OFF the power and disconnect the power source. Do not use a different fuse or short-circuit the fuse holder.

Do not Remove any Covers

There are some areas with high voltages. Do not remove any cover if the power supply is connected. The cover should be removed by qualified personnel only.

External Connection

To ground securely, connect the protective grounding before connecting to measurement or control unit.

IM DR232-01E	7

How to Use this Manual

This User’s Manual consists of the following twelve chapters and Index.

Chapter	Title	Description
Chapter 1	System Configuration	Explains the position of the DR within DARWIN, its
		configuration, etc..
Chapter 2	Functions	Explains the functions of the DR. Operating
		procedures are not explained here.
Chapter 3	Installation and Wiring	Describes cautions for use, explains how to install and
		wire the DR, the power cord, how to switch ON/OFF
		the DR, how to set the date/time, explains the noise
		filter, etc..
Chapter 4	Setting the Monitor Mode	Explains the display in the monitor mode.
	Display
Chapter 5	Setting the Input Type/	Explains the operations when setting the input type,
	Recording Span/	recording span and linear scaling function.
	Linear Scaling
Chapter 6	Setting the Recording	Explains the operations when setting recording
	Conditions	conditions such as the recording mode, channels,
		recording interval, chart speed, recording span, and
		recording format.
Chapter 7	Executing Recording	Explains how to start and stop recording.
Chapter 8	Setting, Displaying and	Explains how to set an alarm and what to do when an
	Recording Alarms	alarm occurs.
Chapter 9	Event/Action Function and	Explains how to operate the event/action function,.
	Other Functions	how to copy recording information, how to reset
		alarms, how to reset the timer, how to use the key-
		lock, and how to use the external in-/output function.
Chapter 10	Basic Settings (SET UP)	Explains functions which usually do not need to be
		changed, and how to set
Chapter 11	Saving/Reading Measured,	Explains how to save measured data, computed data
	Computed and Set-up Data	and set-up data to the internal RAM disk or floppy
		disk and read them into the instrument.
Chapter 12	Executing Computation	Explains the computation function (optional).
	(Available with the /M1 Model)
Chapter 13	Trouble-Shooting and	Explains maintenance procedures, error messages and
	Maintenance	calibration procedures.
Chapter 14	Specifications	Explains specifications for all features of DR.
Index		Gives the index in main menu and alphabetic order.

8	IM DR232-01E

Conventions Used in this Manual

Used Symbols

The following symbol marks are used to attract the operator’s attention.

			Affixed to the DR232/242, indicating that for safety, the operator should
			refer to the appropriate User’s Manual. For a list of the User’s Manuals,
			refer to page 1.
			Describes precautions that should be observed to prevent the danger of
			injury or death to the user.
			Describes precautions that should be observed to prevent damage to the
			DR232/242.
Note			Provides information that is important for proper operation of the DR232/
			242.

Indicates the relevant panel keys and indicators to carry out the operation.

The procedure is explained by a flow diagram. For the meaning of each operation, refer to the example below. The operating procedures are given with the assumption that you are not familiar with the operation. Thus, it may not be necessary to carry out all the steps when changing settings.

Describes settings and restrictions relating to the operation.

IM DR232-01E	9

Contents

Foreword	..................................................................................................................................................................................		1
Checking the Contents of the Package .....................................................................................................................			3
Safety Precautions ..............................................................................................................................................................			7
How to Use ....................................................................................................................................................this Manual			8
Conventions ................................................................................................................................Used in this Manual			9
List of Menus ....................................................................................................................................and Set-up Data			13
Chapter 1	System Configuration
...................................................................................................................................	1.1	About DARWIN	1-1
.................................................................................................................................	1.2	Product Overview	1-2
......................................................................................................................................	1.3	Names of Parts	1-4
........................................................................................................................................	1.4	Floppy Disk	1-11
Chapter 2	Functions
.................................................................................................................................	2.1	Display Functions	2-1
..............................................................................................................	2.2	Measurement Input Functions	2-3
.............................................................................................................................	2.3	Recording Functions	2-5
...................................................................................................................................	2.4	Alarm Function	2-13
.......................................................................................................	2.5	Standard Computation Functions	2-16
..................................................................................................................................	2.6	Other Functions	2-17
Chapter 3 Installation and Wiring
.....................................................................................................	3.1	General Precautions for Installation	3-1
.......................................................................................................................................	3.2	How to Install	3-2
.........................................................................................	3.3	How to Connect the Input/Output Modules	3-7
.............................................................................................	3.4	Installing the Chart and Ribbon Cassette	3-9
.........................................................................................................	3.5	Connecting the Interface Cables	3-14
......................................................................................................	3.6	Connecting the Extension Cables-	3-19
...............................................................................................................	3.7	Connecting the Signal Lines	3-20
.......................................................................	3.8	Connecting an Extension Module to Extension Bases	3-28
...........................................................	3.9	Connecting the Power Cord and Turning the Power ON/OFF	3-30
..................................................................................................................	3.10	Setting the Date and Time	3-35
................................................................................................................................	3.11	Countering Noise	3-36
Chapter 4 Setting the Monitor Mode Display
......................................................................................................................	4.1	Using the AUTO Display	4-1
...............................................................................................................	4.2	Using the MANUAL Display	4-4
......................................................................................................................	4.3	Using the PAGE Display	4-6
.................................................................................................	4.4	Using the ALARM SEARCH Display	4-7
...........................................................................................................	4.5	Using the BARGRAPH Display	4-9
.................................................................................................	4.6	Using the ALARM STATUS Display	4-10
..................................................................................................	4.7	Using the RELAY STATUS Display	4-11
........................................................................................	4.8	Using the CLOCK (Data & Time) Display	4-13
Chapter 5 Setting the Input Type/Recording/Span/Linear Scalling
.....................................................................................	5.1	Setting the Type of Input and Recording Span	5-1
...................................................................................	5.2	Setting Linear Scaling and the Recording Span	5-4

5.3Configuring the Input Range and Recording Span or the Linear Scaling of a Power Monitoring

Channel .................................................................................................................................................

5-6

5.4Configuring the Measuring Range and Recording Span or the Linear Scaling of a Strain Input

Channel ...............................................................................................................................................

5-10

10	IM DR232-01E

		Contents
5.5	Performing Initial Balancing/Initialization on a Strain Input Channel	............................................... 5-12
5.6	Configuring the Pulse Input Channel .................................................................................................	5-13

Chapter 6 Setting the Recording Conditions

6.1	Setting the Recording Mode, Engineering Unit, Recording Channel and Recording Interval	............ 6-1
6.2	Setting the Chart Speed ........................................................................................................................	6-4
6.3	Setting Recording Zones and Partially Expanded Recording ..............................................................	6-6
6.4	Setting Tag, Digital Printout and Manual Printout ...............................................................................	6-8
6.5	Setting the Alarm Printout ..................................................................................................................	6-10
6.6	Setting Scale Printout, List Printout and List Format .........................................................................	6-12
6.7	Entering Messages, Headers and Title ................................................................................................	6-14
6.8	Setting Match Time, Moving Average, Interpolation and Groups ......................................................	6-16

Chapter 7 Executing Recording
7.1	Starting Dot Printing, Digital Printing and Printing in Logging Mode ................................................	7-1
7.2	Starting Manual Printing, List Printing and Header Printing ...............................................................	7-2
7.3	Starting Message Printing .....................................................................................................................	7-3
7.4	Printing Set-up Lists .............................................................................................................................	7-4

Chapter 8	Setting, Displaying and Recording Alarms
	8.1	Setting Alarms and Relays (including internal switches) .....................................................................	8-1
	8.2	Alarm Display and Printing ..................................................................................................................	8-4
Chapter 9	Event/Action Function and Other Functions
	9.1	Setting Event/Action Functions ............................................................................................................	9-1
	9.2	Copying ..............................................................................................................................................	9-12
	9.3	Alarm Acknowledgment, Alarm Reset, Timer Reset, Keylock, and Message Printout .....................	9-14

9.4Clearing Alarm/Message Buffers, Displaying Module/Communications Information, Structuring

	System Modules, and Initializing Information ...................................................................................	9-16
9.5	Fail/Chart End Output, and Remote Control Signal Input .................................................................	9-18
9.6	Summer/Winter Time .........................................................................................................................	9-19

Chapter 10 Basicn Settings (SET UP)

10.1	Selecting Adjustment of Dot-Printing Position or Scan Interval ........................................................	10-1
10.2	Setting Recording Format ...................................................................................................................	10-3
10.3	Select Alarm Interval/Hysteresis/Hold/A/D Converter Integration Time/Filter .................................	10-7
10.4	Setting Operation Mode of Relay/Internal Switch .............................................................................	10-9
10.5	Setting Burn-out/Reference Junction Compensation .......................................................................	10-12
10.6	Setting Recording Colors ..................................................................................................................	10-14
10.7	Setting Key Lock ..............................................................................................................................	10-15
10.8	Setting FUNC/FUNC3 Menu ...........................................................................................................	10-17
10.9	Setting SET/SET3 Menu ..................................................................................................................	10-20
10.10	Selecting Display Update Interval, Registering Details Set/Selected with SET UP Menu, and
	Terminating SET UP Menu ..............................................................................................................	10-24
10.11	Selecting the temperature unit from °C or °F (option) .....................................................................	10-25
10.12	Working with the Report Function ...................................................................................................	10-27

Chapter 11 Saving/Reading Measured, Computed and Set-up Data

11.1	Saving Measured and Computed Data ...............................................................................................	11-1
11.2	Reading Measured and Computed Data .............................................................................................	11-7
11.3	Saving Set-up Data ...........................................................................................................................	11-10
11.4	Reading Set-up Data .........................................................................................................................	11-12
11.5	Copying a Data File ..........................................................................................................................	11-15
11.6	Copying in ASCII Format .................................................................................................................	11-17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Index

IM DR232-01E	11

Contents

11.7	Deleting a Data File ..........................................................................................................................	11-20
11.8	Displaying RAM Disk and Floppy Disk Information ......................................................................	11-21
11.9	Initializing the RAM Disk ................................................................................................................	11-23
11.10	Formatting a Floppy Disk .................................................................................................................	11-24

Chapter 12 Executing Computation (Available with the /M1 Model)

12.1	Overview of the Computation Function .............................................................................................	12-1
12.2	Setting a Computation Equation .........................................................................................................	12-4
12.3	Setting a Constant ...............................................................................................................................	12-7
12.4	Starting/Stopping Computation ..........................................................................................................	12-8

12.5Setting Actions to be Carried out in Case of Computation Error and Setting the Time Axis for TLOG

	SUM ..................................................................................................................................................	12-12
Chapter 13 Trouble-shooting and Maintenance
13.1	Periodic Maintenance and Recommended Parts Replacement Period ...............................................	13-1
13.2	Replacing the Fuse ..............................................................................................................................	13-2
13.3	Troubleshooting ..................................................................................................................................	13-3
13.4	Error Codes .........................................................................................................................................	13-4
13.5	Calibration ..........................................................................................................................................	13-6
Chapter 14 Specifications
14.1	Specifications of DR232/DR242 and DS400/DS600 .........................................................................	14-1
14.2	Universal Input Module and DCV/TC/DI Input Module .................................................................	14-11
14.3	Specifications of mA-input Module .................................................................................................	14-14
14.4	Specifications of Power Monitor Module ........................................................................................	14-16
14.5	Specifications of Strain Input Module ..............................................................................................	14-20
14.6	Specifications of Pulse Input Module ...............................................................................................	14-22
14.7	Specifications of Digital Input Module ............................................................................................	14-24
14.8	Alarm Module ...................................................................................................................................	14-26
14.9	DI/DO Module ..................................................................................................................................	14-27
14.10	Communication Interface Module ....................................................................................................	14-29
14.11	Specifications of Extension Module and Extension Base ................................................................	14-32
14.12	Dimensional Drawings .....................................................................................................................	14-33

INDEX

12	IM DR232-01E

List of Menus and Set-up Data

The following is a list of set-up data, procedures to switch to different setting modes, and setting menu.

Measurement Condition Settings

Parameters	Procedure	Selecting menu	Reference
Input type, span, linear	RANGE key	001-01:VOLT/2V	Chapter 5
scaling*1	SET key*2
Units		SET=UNIT	Section 6.1
Moving average	Press the SET key for about three seconds*2	SET=MOVE AVE	Section 6.8
Measurement cycle*1	Turn ON power while pressing the DISP key	SET UP=	Section 10.1
A/D integration time*1		SCAN INTVL
	Turn ON power while pressing the DISP key	SET UP=A/D INTG	Section 10.3
Filter*1	Turn ON power while pressing the DISP key	SET UP=FILTER	Section 10.3

*1: Make sure that the total number of setting changes, including calibrations and restructuring, does not surpass 100000.

*2: Procedure varies according to the menu configuration of the SET key (see section 10.9).

Chart Speed Settings

Parameters	Procedure	Selecting menu	Reference
Chart speed 1	CHART key	CHART	Section 6.2
Chart speed 2	Press the SET key for about three seconds*	SET=CHART2	Section 6.2

*: Procedure varies according to the menu configuration of the SET key (see section 10.9).

Recording Settings

Parameters	Procedure	Selecting menu	Reference
Logging/Analog trend	SET key*	SET=SYSTEM	Section 6.1
switch, dot-printing cycle
Recording channel	SET key*	SET=TREND	Section 6.1
Recording zone	Press the SET key for about three seconds*	SET=ZONE	Section 6.3
Partial compression	Press the SET key for about three seconds*	SET=PERTIAL	Section 6.3
Tag	Press the SET key for about three seconds*	SET=TAG	Section 6.4
Channel to digital print,	Press the SET key for about three seconds*	SET=DIGITAL PR	Section 6.4
number of rows to print
Channel to manual print	Press the SET key for about three seconds*	SET=MANUAL PR	Section 6.4
Alarm print	Press the SET key for about three seconds*	SET=ALARM PR	Section 6.5
Channel to print scale	Press the SET key for about three seconds*	SET=SCALE PR	Section 6.6
values
Channel to list print	Press the SET key for about three seconds*	SET=LIST PR	Section 6.6
Items to list print	Press the SET key for about three seconds*	SET=LIST FMT	Section 6.6
Message	Press the SET key for about three seconds*	SET=MESSAGE	Section 6.7
Header	Press the SET key for about three seconds*	SET=HEADER	Section 6.7
Title	Press the SET key for about three seconds*	SET=TITLE	Section 6.7
Interpolation	Press the SET key for about three seconds*	SET=INTERPOL	Section 6.8
Adjust dot-printing	Turn ON power while pressing the DISP key	SET UP=PRN ADJ	Section 10.1
position
Recording format	Turn ON power while pressing the DISP key	SET UP=RECORD	Section 10.2
Dot-print color	Turn ON power while pressing the DISP key	SET UP=COLOR	Section 10.6

*: Procedure varies according to the menu configuration of the SET key (see section 10.9).

Display Settings

	Parameters	Procedure	Selecting menu	Reference
	Switch display	DISP key and MODE key	--------	Chapter 4
	Display update interval	Turn ON power while pressing the	SET UP=DISPLAY	Section 10.10
		DISP key
Alarm Settings

Parameters	Procedure	Selecting menu	Reference
Alarm, alarm output	ALARM key	001-01:1/OFF	Section 8.1
relay
Alarm	Turn ON power while pressing the DISP key	SET UP=ALARM	Section 10.3
interval/hysteresis/hold
Execute alarm	FUNC key*	ALARM ACK	Section 9.3
acknowledge
Reset alarm	FUNC key*	ALARM RST	Section 9.3
Clear alarm buffer	Press the FUNC key for about three seconds*	ALM BUF CLEAR	Section 9.4

*: Procedure varies according to the menu configuration of the FUNC key (see section 10.8).

IM DR232-01E	13

List of Menus and Set-up Data

Computation Settings

Parameters	Procedure	Selecting menu	Reference
Computation equation	SET key*	SET=MATH	Section 12.2
Constant	SET key*	SET=CONST	Section 12.3
Perform computation	FUNC key**	MATH START	Section 12.4
Clear measured data and	FUNC key**	MATH CLR START Section 12.4
perform computation
Stop computation	FUNC key**	MATH STOP	Section 12.4
Clear incomplete	FUNC key**	MATH ACK	Section 12.4
measurement status
Handling of computation Turn ON power while pressing the DISP key		SET UP=MATH	Section 12.5
error/time axis setting of
TLOG SUM

*: Procedure varies according to the menu configuration of the SET key (see section 10.9). **: Procedure varies according to the menu configuration of the FUNC key (see section 10.8).

Settings for Saving/Loading Measured/Setup Data (Floppy Disk)

Parameters	Procedure	Selecting menu	Reference
Save/Load measured data SET key*		SET=MEMORY	Section 11.1, 11.2
Save/Load set-up data	SET key*	SET=FLOPPY	Section 11.2, 11.3
of SET mode
Copy measured data	SET key*	SET=MEMORY	Section 11.5
between built-in RAM
disk and floppy disk
Convert data and copy	SET key*	SET=MEMORY	Section 11.6
Initialize built-in RAM	SET key*	SET=MEMORY	Section 11.9
disk
Initialize floppy disk	SET key*	SET=MEMORY	Section 11.10
Save/Load set-up data	Turn ON power while pressing the DISP	SET UP=FLOPPY	Section 11.3, 11.4
of SET UP mode	key

*: Procedure varies according to the menu configuration of the SET key (see section 10.9).

Perform Printing

Parameters	Procedure	Selecting menu	Reference
Perform manual print	PRINT key	MAN PR START	Section 7.2
Perform list print	PRINT key	LIST START	Section 7.2
Perform header print	PRINT key	HEADER START	Section 7.2
Perform message print	FUNC key*	MSG PRINT	Section 7.3
Perform setup list print	Press the FUNC key for about three seconds*	S/U LIST START	Section 7.4

*: Procedure varies according to the menu configuration of the FUNC key (see section 10.8).

Other Settings

Parameters	Procedure	Selecting menu	Reference
Timer	SET key*	SET=TIMER	Section 6.1
Event/Action	SET key*	SET=LOGIC	Section 9.1
Copy between channels	SET key*	SET=COPY	Section 9.2
Match time	Press the SET key for about three seconds*	SET=MATCH TIME Section 6.8
Group	Press the SET key for about three seconds*	SET=GROUP	Section 6.8
Relay, internal switch	Turn ON power while pressing the DISP key	SET UP=RELAY	Section 10.4
operation mode
Burnout	Turn ON power while pressing the DISP key	SET UP=BURN OUTSection 10.5
Reference junction	Turn ON power while pressing the DISP key	SET UP=RJC	Section 10.5
compensation
Key lock	Turn ON power while pressing the DISP key	SET UP=LOCK	Section 10.7
Menu configuration	Turn ON power while pressing the DISP key	SET UP=	Section 10.8
of FUNC key		FUNC PARM
Menu configuration	Turn ON power while pressing the DISP key	SET UP=SET PARM Section 10.9
of SET key
Report function	Turn ON power while pressing the DISP key	SET UP=REPORT	Section 10.12
Reset timer	FUNC key**	TIMER RESET	Section 9.3
Lock keys	FUNC key**	KEY LOCK ON	Section 9.3
Start report	FUNC key**	REPORT START	Section 10.12
Stop report	FUNC key**	REPORT STOP	Section 10.12
Start report print	FUNC key**	REPORT RECALL	Section 10.12
		START
Stop report print	FUNC key**	REPORT PRINT	Section 10.12
		START
Clear message buffer	Press the FUNC key for about three seconds** MSG BUF CLEAR		Section 9.4
Display module settings	Press the FUNC key for about three seconds**	MODULE INF	Section 9.4
Display communication	Press the FUNC key for about three seconds**	COMM INF	Section 9.4
settings
Initialize setting	Press the FUNC key for about three seconds**	RAM INIT	Section 9.4
information

*: Procedure varies according to the menu configuration of the SET key (see section 10.9). **: Procedure varies according to the menu configuration of the FUNC key (see section 10.8).

14	IM DR232-01E

1.1 About DARWIN

Created from a completely new concept that is based on modular architecture, this group of next generation data acquisition systems is called DARWIN (Data Acquistion and Recording Windows).

Today many data acquisition networks are increasingly being linked together. More than ever before, large volume, high speed, accurate, easy-to-use communication functions are essential in many disciplines.

In the world of measurement and control where the number of measurement points has increased sharply, the ability to acquire information from a large number of points easily and economically is crucial. Interfacing to a personal computer allows simplified utilization of the information while improving quality and efficiency.

DARWIN is based on a unique, new concept to meet these needs. The art of measurement is revolutionized by DARWIN which integrates functions of conventional recording and data logging.

Most existing data acquisition equipment has been the all-in-one type in which the measurement section and display/recording section are contained in one box. While this simplifies operation on the one hand, it is difficult to adapt to changes in the measurement environment and also makes expansion difficult.

DARWIN uses a data acquisition engine and remote I/O modules which are completely separate from each other. It is an entirely new product line which quickly and flexibly copes with various restrictive conditions and changes in specifications.

Supported by a personal computer, a whole line-up can be created starting with the data acquisition systems DA series which performs data logging. For example, using a printer as the output device, the equipment becomes a hybrid recorder (DR series).

Two models are available in the DR series: the DR230 and DR240. The DR 230 is a desk-top hybrid recorder, and the DR240 is a panel-mount hybrid recorder (component type).

Personal computer

CH=001 RANGE=TC TYPE-T

DA100

DR230 DR240

Subunit

Input/output		FD
modules

Extension cables (max. length 500m)

1

Configuration System

IM DR232-01E	1-1

1.2 Product Overview

This product is a hybrid recorder which can record and measure from small-scale 10-ch data up to widely distributed 300-ch multi-point data.

The number of measurement points can be expanded up to a maximum of 300-ch by connecting up to six subunits (DS400/DS600) to a main unit (DR232/242). Using dedicated extension cables between units, interconnections can be extended up to 500 m. Since measured objects scattered over a wide area can be wired fast and with a minimum of wiring, a flexible, extensive measurement system can be configured. The input modules to be incorporated in the DR232/242 or DS400/600 can be selected from the following, to suit your measurement conditions:

• Universal input module and DCV/TC/DI input module

Temperature, DC voltage and contact signals can be measured, but cannot be connected to the main unit.

• mA-input Module

This module can directly measure DC currents ranging from -20 mA to 20 mA since it contains shunt resistors. It cannot be connected to a system's main unit.

• Power Monitor Module

This module can measure the effective voltage, effective current, active power, reactive power, apparent power, frequency, power factor and phase angle for an AC voltage or AC current input. It is available in either a single-phase or three-phase model. This module cannot be connected to a system's main unit.

• Strain Input Module

This module can measure strain. It is available in either a model with built-in 120or 350-Ω bridge resistors or a model with NDIS terminals where bridge resistors are connected externally. The module cannot be connected to a system's main unit.

• Pulse Input Module

This module can measure pulses. It cannot be connected to a system's main unit.

• Digital input module

This module can measure contact signals. It cannot be connected to a system’s main unit.

• Communication interface module

This module is necessary when communicating with a personal computer. Measurement conditions can be set and data acquired via the communication interface (GP-IB, RS-232-C, etc.) of this dule. This module can only be connected to the main unit.

• Alarm module

This module can output alarm signals as contact signals. The module can be connected to the main unit or the subunit.

• DI/DO module

This module allows a signal to be output in the case of alarm, failure, or chart end and a remote control signal for the product to be input. The module can be connected to the main unit or the subunit but only one module in all units.

Note

When the following handling is done, it is necessary to carry out “system construction” to operate the instrument correctly. After executing system construction, confirm the module information. For details, see page 9-16.

•Connection (including addition or replacement)/removal of subunits, or unit number setting (see page 3- 7)

•Mounting (including addition or replacement)/removal of modules

1-2	IM DR232-01E

1.2 Product Overview

Connection example

Main unit DR232/DR242

Extension cable

10ch Universal Input module

	b -/B +/A	b -/B +/A	b -/B +/A	b -/B +/A	b -/B +/A		b -/B +/A
	CH 1	CH 1	CH 1	CH 1	CH 1	CH 1
	CH 2	CH 2	CH 2	CH 2	CH 2	CH 2
Subunit	CH 3	CH 3	CH 3	CH 3	CH 3	CH 3
	CH 5	CH 5	CH 5	CH 5	CH 5	CH 5	STATUS
	CH 4	CH 4	CH 4	CH 4	CH 4	CH 4
DS600	CH 6	CH 6	CH 6	CH 6	CH 6	CH 6
							SUB UNIT
	CH 7	CH 7	CH 7	CH 7	CH 7	CH 7
	CH 8	CH 8	CH 8	CH 8	CH 8	CH 8
	CH 9	CH 9	CH 9	CH 9	CH 9	CH 9	100 - 240V 50/60Hz 70VA MAX
	CH10	CH10	CH10	CH10	CH10	CH10	P O W E R
		10ch Universal Input module
	b -/B +/A	b -/B +/A	b -/B +/A	b -/B +/A	b -/B +/A		b -/B +/A
	CH 1	CH 1	CH 1	CH 1	CH 1	CH 1
	CH 2	CH 2	CH 2	CH 2	CH 2	CH 2
Subunit	CH 3	CH 3	CH 3	CH 3	CH 3	CH 3
	CH 4	CH 4	CH 4	CH 4	CH 4	CH 4	STATUS
	CH 5	CH 5	CH 5	CH 5	CH 5	CH 5
DS600	CH 6	CH 6	CH 6	CH 6	CH 6	CH 6
	CH 8	CH 8	CH 8	CH 8	CH 8	CH 8	SUB UNIT
	CH 7	CH 7	CH 7	CH 7	CH 7	CH 7
	CH 9	CH 9	CH 9	CH 9	CH 9	CH 9	100 - 240V 50/60Hz 70VA MAX
	CH10	CH10	CH10	CH10	CH10	CH10	P O W E R
	10ch Universal Input module
			b -/B +/A	b -/B +/A	b -/B +/A		b -/B +/A
			CH 1	CH 1	CH 1	CH 1
			CH 2	CH 2	CH 2	CH 2
			CH 3	CH 3	CH 3	CH 3
Subunit			CH 4	CH 4	CH 4	CH 4	STATUS
			CH 6	CH 6	CH 6	CH 6
			CH 5	CH 5	CH 5	CH 5
DS400			CH 8	CH 8	CH 8	CH 8	SUB UNIT
			CH 7	CH 7	CH 7	CH 7
			CH 9	CH 9	CH 9	CH 9	100 - 240V 50/60Hz 55VA MAX
			CH10	CH10	CH10	CH10	P O W E R

Up to 6 subunits can be connected

1

Configuration System

IM DR232-01E	1-3

1.3 Names of Parts

DR232 Main Unit (desk-top hybrid recorder)

Front

Main display (See chapter 4.)

Sub-display 1 (See chapter 4.)

Sub-display 2 (See chapter 4.)

Status indicator

Operation panel

(See chapters 3 to 12.)

Handle to open/close the front door

Front door

Power switch (See page 3-22) Floppy disk drive (Only for DR232-1)

Rear
Vacant slot with cover
(for communication interface,
alarm, or DI/DO modules)
Failure output terminals
Chart end output terminals
Power fuse (	See page 13-2)
Heat sink fins	AC outlet(Au xiliary
	for DS400/DS600
	:	See page 3-29)
	Power connector
	(	See page 3-29)
	Function grounding
	terminal

1-4	IM DR232-01E

Floppy disk drive (Only for /DR242-1)

1.3 Names of Parts

DR242 Main Unit (panel-mount hybrid recorder)

Front

Main display (See chapter 4.)

Sub-display 1 (See chapter 4.)

Sub-display 2 (See chapter 4.)

Status indicator

Operation panel

(Located behind the front door. See chapters 3 to 12.)

Handle to open/close the front door

Front door

Power switch

(Located inside the front door. See page 3-22.)

Rear

Vacant slot with cover

(for communication interface, alarm, or DI/DO modules)

Failure output terminals

Chart end output terminals Heat sink fins

Power fuse (See page 13-2) (located in the main unit)

AC outlet(Auxiliary for DS400/DS600

:See page 3-30)

Power terminals with a cover ( See page 3-30)

Function grounding terminal

1

Configuration System

IM DR232-01E	1-5

1.3 Names of Parts

Subunit DS400

	Module connector
		Lid covering the extension
	Switch to set the	cable connector
	unit number	Status indicator
	Screw holes for	Installation holes
	module installation

Power switch

Function grounding Power connector terminal (below power switch)

Feet

Holes for fastening the feet

Subunit DS600

Installation holes

Module connector

			Lid covering the
			extension cable
			connector
	Screw holes for		Status indicator
	module installation
	Switch to set
	the unit number	Power switch
	Function grounding		Power connector
	terminal (below power switch)
		Feet
			Holes for fastening
			the feet

Input modules

10-ch Universal input module (DU100-11/DU100-12)

DU100-11

DU100-12

	Screw	Clamp
		terminal
	terminal

Cover	Cover

The 20-ch Universal input modules (DU100-21/DU100-22) and the 30-ch Universal input modules (DU100-31/DU100-31) are similar to the ones shown above.

1-6	IM DR232-01E

1.3 Names of Parts

10-ch DCV/TC/DI input module (DU200-11/DU200-12)

DU200-11

DU200-12

	Screw	Clamp
		terminal
	terminal

Cover	Cover

The 20-ch DCV/TC/DI input modules (DU200-21/DU200-22) and the 30-ch DCV/TC/DI input modules (DU200-31/DU200-31) are similar to the ones shown above.

mA input module (DU300-11/DU300-12)

1

Configuration System

	Screw	Clamp
		terminal
	terminal

Cover	Cover

AC input module (DU400-12/22)

Wire clip

Clamp terminal

Cover

IM DR232-01E	1-7

1.3 Names of Parts

Strain input module (DU500-12/DU500-13/DU500-14)

DU500-12/DU500-13

DU500-14

Gauge method setup switch

NDI terminal

Cover

Clamp terminal

Pulse input module (DU600-11)

Screw terminal

Cover

Digital input module (DU700-11)

Screw terminal

Cover

1-8	IM DR232-01E

1.3 Names of Parts

I/O Terminal Modules

DI/DO module (DT100-11)

Screw terminal

Cover

Alarm module (DT200-11/DT200-21)

DT200-11

DT200-21

Screw	Screw
terminal	terminal

Cover

Cover

Communication Module

GP-IB module (DT300-11)

1

Configuration System

GP-IB connector	Switch to set
	the address

RS-232-C module (DT300-21)

RS-232-C connector	Switches to set
	communication parameters

IM DR232-01E	1-9

1.3 Names of Parts

RS-422-A/RS-485 Module (DT300-31)

	ON/OFF switch of built-in terminating resistor
RS-422-A/RS-485 terminal	LED

Switches to set communication parameters

Ethernet module (DT300-41)

Status indicator

Switch to set mode

10BASE-T port

Extender Module/Extender Base

Extender Module (DV100-011)

Extension cable connector

EXTENDER	I/F
I/F

Extender Base (DV100-012)

Inatallation	Slot number setup switch
holes
Screw holes for
module installation
Power indicator
	Terminator on/off switch
Module connector
	Lid covering the extension

Holes for fastening the feet

1-10	IM DR232-01E

1.4 Floppy Disk

A floppy disk drive is provided with the DR232-1 and DR242-1.

Applicable Floppy Disks

3. 5-inch floppy disks can be used for this instrument. They can also be formatted on this instrument.

•2HD type: 1.2 MB or 1.44 MB (MS-DOS format)

•2DD type; 720 MB (MS-DOS format)

Inserting a Floppy Disk into the Drive

Insert the floppy disk into the floppy disk drive, shutter side first and with the label face up.

Make sure that the floppy disk is inserted until the eject button pops up.

Removing the Floppy Disk from the Drive

Make sure that the access indicator is not lit, then push the eject button to remove the floppy disk.

access indicator

eject button

1

Configuration System

CAUTION

If the floppy disk is removed when the access indicator is still lit, damage to the magnetic head of the floppy disk drive or to data saved on the floppy disk may result. Before removing the floppy disk, always make sure that the access indicator is OFF.

General Precautions Regarding Handling of Floppy Disk

For general precautions regarding handling of floppy disks, refer to the instruction manual provided with the disk.

IM DR232-01E	1-11

2.1 Display Functions

The inter-active front panel display consists of three rows. The first row is the main display, and the second and third row are sub-display 1 and 2 respectively.

Monitor Mode and Status Display

Monitor Mode

•Auto Mode

This mode can be set for the main display, sub-display 1 and sub-display 2. Measurement values of all channels will be consecutively displayed with update interval.

•Manual Mode

This mode can be set for the main display, sub-display 1 and sub-display 2. Measurement values of a single channel will be displayed. The display update interval is the same as the measurement interval (refer to page 2-4).

•Manual Mode

This mode can be set for the main display. When choosing this display, the measurement values of 5 consecutive channels will be displayed as a page using also sub-display 1 and 2. The display update interval is the same as the measurement interval (refer to page 2-4).

•Alarm Search Mode

This mode can be set for the main display, sub-display 1 and sub-display 2. Channels at which an alarm occurred will be searched for and their measurement values displayed. The display update interval is 2 seconds.

•Bargraph Mode

This mode can be set for sub-display 1. Measurement values which are shown on the main display will be shown as a bargraph. The display update interval is the same as the interval of the main display.

•Alarm Status Mode

This mode can be set for sub-display 1 and 2. The display will show per channel whether or not an alarm occurred (refer to page 2-13). On one display the alarm status of a maximum of 30 channels can be monitored (depending on the number of input channels). The display update interval is 0.5 seconds.

•Relay Status Mode

This mode can be set for sub-display 1 and 2. The display will show the operating status of internal switches/alarm output relays (refer to page 2-13). On one display a maximum of 30 relay statuses can be monitored. The display update interval is 1 second.

•Clock Mode

This mode can only be set for sub-display 2. The current date and time are shown.

•Displaying the Selected Mode

To the right of sub-display 1 the currently selected display mode is shown for a specific display.

Status Display

Indicators at the right side of the display will light up to show that recording is in progress (refer to page 2-5), alarms are occuring (refer to page 2-13), keys are locked (refer to page 2-17) and chart needs to be replaced (refer to page 2-18).

Remote/Local Status Display

The status of remote/local control will be show on sub-display 2. Keys cannot be operated in remote control.

2

Functions

IM DR232-01E	2-1

2.1 Display Functions

Display for Setting the Type of Input, Computation and Recording Conditions

Menus for setting each of the following functions will be displayed.

•measurement input functions (refer to page 2-3)

•recording functions (refer to page 2-5)

•alarm functions (refer to page 2-13)

•calculation functions (refer to page 2-16)

•event/action function, key-lock function and external in/output function (refer to page 2-17, 18)

Display for Setting Fundamental Functions

Menus for performing fundamental settings will be displayed.

2-2	IM DR232-01E

2.2 Measurement Input Functions

Input Type

DC Voltage

Measurements can be done after selecting the measurement range per channel. The minimum range is 20mV, the maximum range is 50V.

Thermocouple

Measurements can be done after selecting the type of thermocouple per channel. The available types are R, S, B, K, E, J, T, L, U, N, W and KPvsAU7FE.

Reference Junction Compensation (RJC) can be set to either use Internal RJC (INT) or External RJC (EXT) per channel.

Burnout function can be set OFF per channel or it can be selected in which direction the trend line will move if burnout occurs (right or left)

Resistance Temperature Detector

Measurements can be done after selecting the type of resistance temperature detector (RTD) per channel. The available 17 types are Pt100(1mA), Pt100(2mA), JPt100(1mA), JPt100(2mA), Pt50(2mA), Ni100(1mA)SAMA, Ni100(1mA)DIN, Ni120(1mA), J263*B, Cu10GE, Cu10L&N, Cu10WEED, Cu10BAILEY, Pt100 (1mA) high resolution, Pt100 (2mA) high resolution, JPt100 (1mA) high resolution and JPt100 (2mA) high resolution.

Contact Input

The type of contact input can be selected from voltage level input or contact input, and recording can be set ON or OFF per channel. In case of the voltage level input a voltage level up to 2.4V results in recording OFF, whereas a voltage level of 2.4V or more results in recording ON.

DC Currents

DC currents ranging from -20 mA to 20 mA can be measured by means of the built-in 250-Ω shunt resistors.

AC Voltages/Currents

The effective voltage, effective current, active power, reactive power, apparent power, frequency, power factor and phase angle can be measured. The measuring range is common to all terminals. The input terminals of the module with this input mode, unlike those of modules with other input modes, are not consistent with a setup screen in terms of the channel number.

Strain

The module for this input mode supports the single-gauge, single-gauge three-wire (not yet supported by the DU500-14 module), adjacent-side two-gauge, opposed-side two-gauge and fourgauge methods. If you have connected any new strain gauge or changed the measuring range, go through initial balancing before starting measurement.

Pulses

The module for this input mode can measure the number of pulses per second on a channel basis or detect the on/off states by means of any variations occurring in the instantaneous value every second. Once you connect the pulse input module, you can sum up values without the need for the computing function.

Skipping Input Channels

This function allows skipping measurement, recording and display of channels you are not using.

Measurement, recording and display will not be done for the skipped channels.

Reference Junction Compensation (RJC)

This function is to be used when measuring temperatures using thermocouples. The voltage generated by a thermocouple depends on the temperature of the spot of measurement and the reference junction temperature. Reference junction compensation is a function which compensates the temperature at the side of the measurement instrument to 0 degrees C.

To compensate for the environmental temperature an internal circuit can be selected, or compensation by a fixed compensation voltage value (external) can be set.

2

Functions

IM DR232-01E	2-3

2.2 Measurement Input Functions

Scan Interval

•The duration of time (one scan) in which the measurement of all channels is carried out, is called the scan interval.

•This interval can be set to any value from 0.5 second to 60 seconds. The shortest is 300 ch/500 ms (varies with the shortest measurement period of the input module).

A/D Integration Time

This instrument measures the input signal after putting it through an A/D converter. In order to minimize the noise imposed on the input signal, specific integration times exist.

The integration time can be selected from 20ms (50Hz), 16.7ms (60Hz) and 100ms (10Hz). When “AUTO” is selected, the integration time will be automatically decided according to the 50/ 60Hz frequency of the power supply.

AUTO does not function if the instrument is the subunit (DS400/DS600) of the DC power supply model (Selecting “AUTO” will set the A/D integration time to 20 ms (50 Hz)). If you are using the instrument on a 60-Hz power supply, set the A/D integration time to 16.7 ms (60Hz).

Input Filter

A filter can be set ON/OFF to reduce normal mode noise. Effects on normal mode noise are as follows depending on the filter being ON/OFF (theoretical values).

Attenuation

1Hz

0dB

–20dB

–40dB

–60dB

–80dB

Frequency

10Hz 50Hz100Hz 300Hz

Slope:–20dB/dec

Filter ON

Filter OFF

Slope:–60dB/dec

–100dB

2-4	IM DR232-01E