United Kingdom:One Omega Drive, River Bend Technology Centre
ISO 9002 CertifiedNorthbank, Irlam, Manchester
M44 5BD United Kingdom
TEL: +44 (0)161 777 6611FAX: +44 (0)161 777 6622
Toll Free in United Kingdom: 0800-488-488
e-mail: sales@omega.co.uk
onn, Germany
AX: +49 (0)7056 9398-29
F
It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.
Foreword
Notes
Thank you for purchasing the OMEGA RD1800B Recorder.
This manual describes the functions (excluding the communication functions), installation
and wiring procedures, operating procedures, and lists the handling precautions of the
RD100B0 Recorder. To ensure correct use, please read this manual thoroughly before
beginning operation.
The following three manuals including this manual are available for the RD1800B
Recorder.
• Electronic Manuals Provided on the Accompanying CD-ROM
Manual TitleManual No.Description
RD1800B RecorderM-4242This manual.
User’s Guide
RD100B/RD1800BM-4233Explains the communication functions of the
Communication InterfaceRD1800B Recorder using Ethernet interface and
User’s Guidethe RS-422A/485 communication interface.
• Paper Manual
Manual TitleManual No.Description
RD1800B RecorderM-4243Explains concisely the operations of the
Operation GuideRD1800B Recorder.
• The contents of this manual are subject to change without prior notice as a result of
continuing improvements to 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 OMEGA as listed on the back cover of this manual.
• Copying or reproducing all or any part of the contents of this manual without the
permission of OMEGA is strictly prohibited.
• The TCP/IP software of this product and the document concerning the TCP/IP
software have been developed/created based on the BSD Networking Software,
Release 1 that has been licensed from the University of California.
Trademarks
Revisions
Microsoft, MS-DOS, Windows, Windows NT, and Windows XP are either registered
trademarks or trademarks of Microsoft Corporation in the United States and/or other
countries.
• Adobe, Acrobat, and PostScript are trademarks of Adobe Systems incorporated.
• For purposes of this manual, the TM 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 EditionAugust 2005
i
Safety Precautions
The general safety precautions described here must be observed during all phases of operation.
Safety Standards and EMC Standards
This recorder 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). This recorder is designed for indoor use.
About This Manual
• This manual should be read by the end user.
• Read this manual thoroughly and have a clear understanding of the product before operation.
• This manual explains the functions of the product. OMEGA does not guarantee that the product will suit a
particular purpose of the user.
• Under absolutely no circumstances may the contents of this manual be transcribed or copied, in part or in
whole, without permission.
• The contents of this manual are subject to change without prior notice.
• 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 or omissions, please contact OMEGA.
Precautions Related to the Protection, Safety, and Alteration of the Product
• The following safety symbols are used on the product and in this manual.
“Handle with care.” To avoid injury and damage to the instrument, the operator must refer to the
explanation in the manual.
Protective ground terminal
AC
“High temperature.” To avoid injury caused by hot surface, do not touch locations where this
symbol appears.
• For the protection and safe use of the product and the system controlled by it, be sure to follow the instructions
and precautions on safety that are stated in this manual whenever you handle the product. Take special note
that if you handle the product in a manner that violate these instructions, the protection functionality of the
product may be damaged or impaired. In such cases, OMEGA does not guarantee the quality, performance,
function, and safety of the product.
• When installing protection and/or safety circuits such as lightning protection devices and equipment for the
product and control system or designing or installing separate protection and/or safety circuits for fool-proof
design and fail-safe design of the processes and lines that use the product and the control system, the user
should implement these using additional devices and equipment.
• If you are replacing parts or consumable items of the product, make sure to use parts specified by OMEGA.
• This product is not designed or manufactured to be used in critical applications that directly affect or threaten
human lives. Such applications include nuclear power equipment, devices using radioactivity, railway facilities,
aviation equipment, air navigation facilities, aviation facilities, and medical equipment. If so used, it is the user’s
responsibility to include in the system additional equipment and devices that ensure personnel safety.
• Do not modify this product.
ii
Safety Precautions
WARNING
• Power Supply
Ensure that the source voltage matches the voltage of the power supply before turning ON the power.
• Protective Grounding
Make sure to connect the protective grounding to prevent electric shock before turning ON the power.
• Necessity of Protective Grounding
Never cut off the internal or external protective earth wire or disconnect the wiring of the protective earth
terminal. Doing so invalidates the protective functions of the instrument and poses a potential shock
hazard.
• Defect of Protective Grounding
Do not operate the instrument if the protective earth or fuse might be defective. Make sure to check
them before operation.
• Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable liquids or vapors. Operation in such
environments constitutes a safety hazard.
• Do Not Remove Covers
The cover should be removed by OMEGA’s qualified personnel only. Opening the cover is dangerous,
because some areas inside the instrument have high voltages.
• External Connection
Connect the protective grounding before connecting to the item under measurement or to an external
control unit.
• Damage to the Protective Structure
Operating the recorder in a manner not described in this manual may damage its protective structure.
Exemption from Responsibility
• OMEGA makes no warranties regarding the product except those stated in the WARRANTY that is provided
separately.
• OMEGA assumes no liability to any party for any loss or damage, direct or indirect, caused by the user or any
unpredictable defect of the product.
Handling Precautions of the Software
• OMEGA makes no warranties regarding the software accompanying this product except those stated in the
WARRANTY that is provided separately.
• Use the software on a single PC.
• You must purchase another copy of the software, if you are to use the software on another PC.
• Copying the software for any purposes other than backup is strictly prohibited.
• Please store the original media containing the software in a safe place.
• Reverse engineering, such as decompiling of the software, is strictly prohibited.
• No portion of the software supplied by OMEGA may be transferred, exchanged, sublet, or leased for use by any
third party without prior permission by OMEGA.
iii
Checking the Contents of the Package
Unpack the box and check the contents before operating the recorder. If some of the
contents are not correct or missing or if there is physical damage, contact the dealer
from which you purchased them.
Checking the Model
A name plate is affixed to the recorder. Check that the model name and suffix code
given on the name plate on the rear panel match those on your order.
1 /A1, /A2, /A3, /A4, and /A5 cannot be specified simultaneously. /A5 is valid on the dot models.
2 /A5 and /F1 cannot be specified simultaneously on the dot models.
/A4 and /F1 cannot be specified simultaneously on the pen models.
3 /C3 and /C7 cannot be specified simultaneously.
4 /H2 and /N2 cannot be specified simultaneously.
5 Valid only on the dot models.
6 14 types of input including Pt50 RTD, PR40-20, and Platinel TC
Fail/Chart end detection and output
Clamped input terminal
4
Non-glare door glass
Mathematical function
Cu10, Cu25 RTD input
3 legs isolated RTD
Expansion inputs
4,5
6
Remote control 5 points
2
iv
Standard Accessories
t
The standard accessories below are supplied with the recorder. Check that all contents
are present and undamaged.
Checking the Contents of the Package
Z-fold chart paperRibbon cassetteDisposable
Recording
Chart
Recording Chart
KOKUSAI
CHART
KOKUSAI
CHART
Manuals for the µR10000/µR20000
(CD-ROM)
Item1-Pen2-Pen3-Pen4-Pen Dot Printing
Z-fold chart paper11111
Ribbon cassette
Disposable felt pen
Plotter pen
Mounting bracket
Manuals for the µR10000/µR20000 (CD-ROM)
µR20000 Recorder Operation Guide
IM 04P02B01-02E
Optional Accessories (Sold Separately)
The optional accessories below are available for purchase separately. If you make an
order, make sure that all contents are present and undamaged.
For information about ordering accessories, contact the dealer from which you
purchased the recorder.
Open the door, hold the left and right tabs and pull the display and key panel section
toward you. The section opens upward.
Open
Remove all packing materials.
• Pen Model• Dot Model
Pen model
Tab on the display
Display
Open
Dot model
Return the display and key panel section to its original position by pressing the section
downward.
vi
How to Use This Manual
This user’s manual consists of the following sections.
For details on communication functions, see the RD100B/RD1800B CommunicationInterface User’s Guide (M-4233) on the CD-ROM.
ChapterTitle and Description
1Functional Description
2Before Using the Recorder
3Names of Parts and Run Operations
4Common Operations for Setting Functions and Setup Guide
5Frequently Used Setup Operations (Setting Mode)
6Setup Operations for Convenient Functions (Setting Mode)
7Setup Operations for Changing/Adding Functions (Basic Setting Mode)
8Setup Operations for Changing the Displayed Contents
9Operations Related to the Computation Function (/M1 Option)
10Troubleshooting
11Maintenance
12Specifications
Appendix Describes the printout contents.
Index
Describes the functions of the Recorder. Refer to this chapter when you are unsure
of the details of the function that you are operating.
Describes the installation and wiring procedures.
Describes the names of each part of the recorder and the daily operations.
Describes the execution modes of the recorder, basic setup operations using keys,
and provides a function setup guide.
Describes how to change the input range, alarms, chart speed, etc.
Describes the setup operations for convenient functions such as how to assign tags
to channels and how to set message strings that are to be printed.
Describes the setup operations for changing or adding functions such as setting the
recorder to detect sensor burnouts and changing the contents that are printed on the
chart paper.
Describes how to select the display type suitable for the application.
Describes all operations related to the computation function.
Describes error message and troubleshooting measures of the Recorder.
Describes periodic inspection, calibration, pen adjustment/printer carriage
adjustment, and recommended replacement period for worn parts.
Gives the specifications of the Recorder.
Note
• This user’s manual covers information regarding the recorders with English as the display/
recording language (suffix code “2”).
• For the procedure of setting the display/recording language, see section 7.14, “Changing the
Display/Recording Language.”
vii
How to Use This Manual
Conventions Used in This Manual
Unit
K ........ Denotes 1024. Example: 768 KB (file size)
k ........ Denotes 1000.
Safety Markings
The following markings are used in this manual.
Improper handling or use can lead to injury to the user or
damage to the instrument. This symbol appears on the
instrument to indicate that the user must refer to the user’s
manual for special instructions. The same symbol appears in
the corresponding place in the user’s manual to identify those
instructions. In the manual, the symbol is used in conjunction
with the word “WARNING” or “CAUTION.”
WARNING
CAUTION
Note
Subheadings
On pages that describe the operating procedures in Chapter 3 through 9, the following
symbols are used to distinguish the procedures from their explanations.
Bold characters denote keys or character strings that are displayed on the screen.
Example: Range, Unit
Procedure
Explanation
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.
Calls attention to information that is important for proper
operation of the instrument.
Follow the numbered steps. All procedures are written with
inexperienced users in mind; depending on the operation, not
all steps need to be taken.
This subsection describes the setting parameters and the
limitations on the procedures. It does not give a detailed
explanation of the function. For details on the function, see
chapter 1.
viii
Contents
1
Foreword ......................................................................................................................................... i
Appendix 1Periodic Printout and Printout Using the TLOG Timer (/M1 Option) ................. App-1
Index
8
9
10
11
12
App
Index
xi
Chapter 1 Functional Description
1.1Overview of the Recorder
The RD1800B Recorder (hereafter referred to as the recorder) can be used to assign DC
voltage, 1-5V, thermocouple, RTD, and contact or voltage ON/OFF signal to channels for
measurement. The measured results are recorded with pens or dots on a chart paper
that is fed at a constant speed. The pen model can record up to 4 channels; the dot
model can record up to 24 channels.
Alarms
For each channel, various alarms such as high limit alarm and low limit alarm can be
assigned to monitor the measured values. Alarm output relays can be used to output
contact signals when alarms occur (/A1, /A2, /A3, /A4, and /A5 options).
Recording
The measured results are recorded with pens or dots on a chart paper (trend recording).
The chart speed can be selected from 5 to 12000 mm/h on the pen model and 1 to 1500
mm/h on the dot model.
In addition to trend recording, various types of information can be printed or recorded on
the chart paper such as numeric measured values, alarm occurrence/release, and
predefined messages.
Also, the recorder settings can be printed.
1
Functional Description
Internal Light
A light is provided for easier viewing of the recording area of the chart paper.
Display
Measured values can be displayed numerically or using bar graphs on the large display.
Also, alarm status and chart speed can be displayed.
Communication Function
Using the Ethernet communication interface (/C7 option) or the RS-422A/485
communication interface (/C3 option), the measured values on the recorder can be
output to a PC or a PC can be used to control the recorder.
This manual does not cover the communication functions. For details on communication
functions, see the RD100B0/RD1800B Communication Interface User’s Manual (IM04P01B01-17E) on the CD-ROM.
Other Main Functions
The computation function (/M1 option) can be used to perform various computations from
four arithmetic operations to statistical calculations on 8 and 24 computation channels on
the pen model and dot model, respectively. The computed results can be recorded.
The remote control function (/R1 option) can be used to control the start/stop and other
operations of the recorder by applying contact signals to the dedicated terminals.
The FAIL/chart end detection and output function (/F1 option) can be used to output
contact signals when errors are detected on the recorder or when the chart paper runs
out.
1-1
1.2Measuring Input Section
Input Section
Number of Measurement Channels and Scan Interval
The recorder samples the input signals on the measurement channels at the scan
interval to obtain the measured values.
ModelNum. of Ch.Scan Interval
1-pen model1125 ms
2-pen model2125 ms
3-pen model3125 ms
4-pen model4125 ms
6-dot model61 s (2.5 s when the integration time of the A/D converter is 100 ms.)
12-dot model122.5 s (5 s when the integration time of the A/D converter is 100 ms.)
18-dot model182.5 s (10 s when the integration time of the A/D converter is 100 ms.)
24-dot model242.5 s (10 s when the integration time of the A/D converter is 100 ms.)
Input Type, Measurable Range, and Computation
The recorder can measure the following types of inputs.
Input TypeMeasurable Range
DC voltageDC voltage in the range of ±20 mV to ± 50 V
1-5VSee “1-5V” below.
Thermocouple Temperature range corresponding to each type: R, S, B, K, E, J, T, N, W, L, U,
RTDTemperature range corresponding to each type: Pt100Ω and JPt100Ω
ON/OFF input Contact input: Open contact is OFF (0). Closed contact is ON (1).
and WRe
Voltage input: Less than 2.4 V is OFF (0). Greater than or equal to 2.4 V is ON (1)
• 1-5V
1-5V is scaled to values in the appropriate unit to be used as measured values. Also,
the low-cut function (input less than 0% is fixed to 0 (scale left value)) can be used.
• Current Input
A shunt resistor is attached to the input terminal. The current signal is converted to a
voltage signal and measured. The measurable range is the range equivalent to the
“DC voltage” range indicated above after converting the current to the voltage signal.
Note
Three types of shunt resistors (250 Ω, 100 Ω, and 10 Ω) are available for current input (see
“Optional Accessories (Sold Separately)” on page v). For example, a 250-Ω shunt resistor is
used to convert the signal to the range of 1 to 5 V for 4 to 20 mA input.
• Range Type, Measurable Range, and Recording Span
Various “range type” are available for the different types of inputs (for example
thermocouple R). Each range type has a preset measurable range (0.0 to 1760.0°C
for thermocouple R). Measurement can be made by specifying an arbitrary range
within the measurable range as the input range. The measured values in the input
range are recorded on the chart paper. The range of measured values that are
recorded is called the recording span.
Measurable range
(Thermocouple R example)
1760.0°C
Input range or
recording span
1500.0°C (rightmost value of span)
1-2
300.0°C (leftmost value of span)
0.0°C
<Related Topics>
Setting the input range: Section 5.1
1.2 Measuring Input Section
• Delta Computation
The value obtained by subtracting the measured value of another channel (called the
reference channel) from the input value of the channel set to delta computation is used
as the measured value of that channel. The reference channel must be assigned to a
channel whose channel number is less than that of the channel on which delta
computation is specified. The channel on which delta computation is specified is
automatically set to the same range type as the reference channel.
Channel set to delta computation
Input
value
–
Measured value on the reference channel
DC voltage
Measured value
Note
A channel whose input type is set to DC voltage, TC, or RTD can be designated as a
reference channel. However, channels set to scaling or square root computation cannot be
designated.
• Scaling
The input values are scaled to values in the appropriate unit to be used as measured
values.
Measured valueInput value
10 V
300.0°C
1
Functional Description
0 V−100.0°C
• Square Root Computation
When the input type is DC voltage, the square root of the input value is calculated, the
result is scaled to a value in the appropriate unit, and used as the measured value of
the channel. Also, the low-cut function (input less than a given measured value is
fixed to 0 (scale left value)) can be used.
Channel set to square root computation
Input value
√
Scaling
Measured value
Low-cut value
Measured value
Result of square
root computation
Note
The square root computation on the recorder uses the following formula.
min
V - V
F = ( F - F )
x
max
minmin
where Vmin (leftmost value of span) < Vmax (rightmost value of span)
Fmin (leftmost value of scale after scaling) < Fmax (rightmost value of scale after
scaling)
Vx is the input voltage and Fx is the scaled value
x
maxmin
V - V
+ F
1-3
1.2 Measuring Input Section
Bias
A given value (bias value) is added to the input value and used as the measured value of
that channel.
Biased channel
Input value
<Related Topics>
Setting the bias: Section 7.15 and 6.12
Burnout Detection of Thermocouples
This function makes the recording go off the scale to the right or left when the
thermocouple burns out while measuring temperature with a thermocouple. This
function can also be used on 1-5V. The burnout detection function can be set for each
channel.
By default, this function is disabled.
Note
For 1-5V, a burnout occurs when the input value is less than or equal to 0.2 V.
+
Measured value
+
Bias value
<Related Topics>
Setting the burnout detection function: Section 7.3
Reference Junction Compensation of Thermocouple Input
When measuring the temperature using a thermocouple, the reference junction
compensation on the recorder can be used. When using external reference junction
compensation, you can set the reference voltage. The reference junction compensation
can be set for each channel.
By default, the recorder is configured to use the internal reference junction compensation
function.
Note
When using external reference junction compensation, set an appropriate reference junction
compensation voltage. For example, if the reference junction temperature of the external
reference compensation is T0 °C, set the reference compensation junction voltage to the
thermoelectromotive force of the 0°C reference of T0 °C.
Recorder
1
3
2
4
External reference junction compensation
(Hold the contact point of the thermocouple
and copper wire at T
Copper wire
0
°C)
Thermocouple
1-4
<Related Topics>
Setting the reference junction compensation function: Section 7.4
1.2 Measuring Input Section
Noise Elimination from Input Signals
Filter and Moving Average
This function used to suppress the effects of noise that is riding on the signal. The pen
model and dot model are equipped with a filter function and a moving average function,
respectively. The function can be set for each measurement channel. However, it does
not operate on channels set to ON/OFF input.
• Filter (Pen Model)
The filter is a low-pass filter. The time constant can be set to 2 s, 5 s, or 10 s.
Filter result (output for a step input)
Input
2, 5, 10 s (time constant, the time it takes
to reach 63.2% of the output value)
• Moving Average (Dot Model)
The average value of the m most recent values acquired at the scan interval is used
as the measured value of the channel. The number of moving-averaged data points
(m) can be set in the range 2 to 16. The figure below shows an example indicating
the operation of the buffer for the moving average computation when the number of
moving averaged data points is set to 5.
1
Functional Description
63.2% of the output value
Output response curve
(when using the filter)
Moving
average
Buffer data for the
nth sampling time
10.0 mV
1
5.0 mV
2
0.0 mV
3
–5.0 mV
4
–10.0 mV
5
0.0 mV
Buffer data for the
n+1th sampling time
Most recent dataMost recent data
15.0 mV
10.0 mV
5.0 mV
0.0 mV
–5.0 mV
Deleted
5.0 mV
<Related Topics>
Setting the filter: Section 7.12 and 6.2
Setting the moving average: Section 7.11 and 6.3
Buffer data for the
n+2th sampling time
10.0 mV
15.0 mV
10.0 mV
5.0 mV
0.0 mV
Deleted
8.0 mV
1-5
1.2 Measuring Input Section
Integration Time of the A/D Converter
The recorder uses an A/D converter to convert the sampled analog signal to a digital
signal. By setting the integration time of the A/D converter to match the time period
corresponding to one cycle of the power supply or an integer multiple of one cycle, the
power supply frequency noise can be effectively suppressed.
The integration time of the A/D converter is selected according to the model from the
table below.
ModelIntegration Time of the A/D Converter
Pen modelSelect 16.7 ms (60 Hz), 20 ms (50 Hz), or Auto
Dot modelSelect 16.7 ms (60 Hz), 20 ms (50 Hz), 100 ms or Auto
• If Auto is selected, the recorder detects the power supply frequency and automatically
selects 16.7 ms or 20 ms.
• Because 100 ms is an integer multiple of 16.7 ms and 20 ms, this setting can be used
to suppress the power frequency noise for either frequency, 50 Hz or 60 Hz.
• The scan interval on the dot model varies depending on the integration time setting
(see page 1-2).
<Related Topics>
Setting the A/D integration time: Section 7.2
1-6
1.3Alarms
This function generates an alarm when the measured data meets a certain condition.
The alarm occurrence/release can be recorded on the chart paper. The alarm status can
be displayed on the screen.
Also, alarm output relays can be used to output contact signals when alarms occur (/A1,
/A2, /A3, /A4, and /A5 options).
Alarm Types
Number of Alarm Point Marks
Up to four alarms can be set for each channel.
Alarm Conditions
The eight conditions below are available. The character inside the parentheses is the
symbol used to denote each alarm on the recorder.
• High Limit Alarm (H)
• Low Limit Alarm (L)
An alarm occurs when the input value exceeds the alarm value.
An alarm occurs when the input value falls below the alarm value.
High limit alarm
Alarm occurrence
Alarm
value
Low limit alarm
Measured
value
Alarm release
1
Functional Description
Alarm release
Measured value
Alarm occurrence
Alarm value
• Difference High Limit Alarm (h)*
An alarm occurs when the difference in the input values of two channels is greater
than or equal to the specified value.
• Difference Low Limit Alarm (l)*
An alarm occurs when the difference in the input values of two channels is less than
or equal to the specified value.
* Can be specified on channels set to delta computation.
• High Limit on Rate-of-Change Alarm (R)
The rate-of-change of the measured values is checked over a certain time (interval).
An alarm occurs if the rate-of-change of the measured value in the rising direction is
greater than or equal to the specified value.
• Low Limit on Rate-of-Change Alarm (r)
The rate-of-change of the measured values is checked over a certain time (interval).
An alarm occurs if the rate-of-change of the measured value in the falling direction is
greater than or equal to the specified value.
High limit on rate-of-change alarmLow limit on rate-of-change alarm
Change in the
Measured
value
T
2
T
1
t
1
t2−t
1
Interval
measured value
Amount of change
in the setting
T2−T
||
1
t
Time
2
Measured
value
T
1
T
2
t
1
t2−t
Interval
Amount of change
in the setting
T2−T
|
t
2
1
Change in the
measured value
Time
|
1
The alarm value of the rate-of-change alarm is set using an absolute value. The
interval is derived using the following equation and set using the number of samples.
Interval = the scan interval × the number of samples
1-7
1.3 Alarms
• Delay High Limit Alarm (T)
An alarm occurs when the measured value remains above the alarm value for a
specified time period (alarm delay period).
• Delay Low Limit Alarm (t)
An alarm occurs when the measured value remains below the alarm value for a
specified time period (alarm delay period).
Delay High Limit Alarm Example (T is the specified delay)
Measured value
X1X2X3X4
Alarm value
T1
T
Alarm releaseAlarm occurrence
• Alarm does not occur at T1, because the time period is shorter than the specified
alarm delay period (T).
• The measured value exceeds the alarm value at time X2, and the alarm occurs at
time X3 at which the specified alarm delay period elapses (the time when the alarm
occurs is the time at X3).
• The measured value falls below the alarm value at time X4, and the alarm is
released.
Note
• The alarm detection operation is reset when a power failure occurs. The operation
restarts after the power recovers.
• If the alarm value is changed while a delay alarm is occurring, the alarm is released if the
new alarm value does not meet the alarm condition.
Alarm Hysteresis
Hysteresis can be specified to the values for activating and releasing the alarm. The
hysteresis applies only to high limit alarm (H) and low limit alarm (L). The hysteresis
width can be set in the range of 0.0% (Off) to 1.0% of the recording span in 0.1 steps.
The setting applies to all high limit alarms and low limit alarms. By default, the hysteresis
width is set to 0.5%.
High limit alarm
Alarm occurrence
Measured value
Alarm release
Alarm
value
<Related Topics>
Setting alarms: Section 5.2
Setting the alarm delay function: Section 7.15 and 6.10
Setting the alarm hysteresis: Section 7.1
Low limit alarm
Measured
value
Alarm occurrence
Alarm release
Hysteresis
(1% or less)
Alarm value
1-8
1.3 Alarms
Alarm Indication
Alarm Recording
The alarm status can be displayed on the screen. For details on the display, see section
1.5.
Non-Hold/Hold Operation of the Alarm Indication
The alarm indication can be set to operate in the following fashion when the alarm
condition is no longer met.
• Clear the alarm indication (non-hold).
• Hold the alarm indication until the alarm ACK operation is executed (hold).
The default setting is non-hold.
HoldNon-hold
Alarm ACKAlarm ACK
or
Blinking
or
Blinking
OFF
ON
Alarm
Alarm
indication
Alarm occurrence
Alarm release
ON
OFF
OFF
<Related Topics>
Setting the non-hold/hold operation of the alarm indicator: Section 7.1
The alarm occurrence/release can be recorded on the chart paper. See section 1.4.
1
Functional Description
Alarm Output Relay (/A1, /A2, /A3, /A4, and /A5 Options)
Contact signals can be generated from alarm output relays when alarms occur. The
number of output relays is 2 (/A1), 4 (/A2), 6 (/A3), 12 (/A4), or 24 (/A5). The alarm
output relays are denoted as I01 to I06, I11 to I16, I21 to I26, and I31 to I36 on the
recorder.
The following functions can be assigned to the alarm output relay.
Diagnosis Output
The diagnosis output can be assigned to alarm output relay I01.
The relay is activated when there is an error in the plotter operation on the pen model,
when a burnout is detected, or when there is an error in the A/D converter. Output relay
I01 is normally energized and de-energizes when an error is detected (de-energized
operation and non-hold operation).
If diagnosis output is enabled, I01 becomes a relay dedicated to diagnosis output.
<Related Topics>
Setting the diagnosis output: Section 7.1
NOCNC
Malfunction
NOCNC
Power-OFF
1-9
1.3 Alarms
Reflash Alarm
When multiple alarms are assigned to one alarm output relay, this function notifies the
occurrence of subsequent alarms after the relay is activated by the first alarm. When
subsequent alarms occur, the output relay is released temporarily (approximately 500
ms).
The reflash alarm function is set to three output relays (I01, I02, and I03 (I01 and I02 for
the /A1 option)).
By default, the reflash alarm is disabled.
Alarm
Alarm output relay
(Reflash alarm ON)
Alarm output relay
(Reflash alarm OFF)
Channel 1
Channel 2
Channel 3
Approx. 500 ms Approx. 500 ms
Note
• If the reflash alarm is enabled, I01 to I03 are set to reflash alarm operation. In this case, I01
to I03 are set to OR operation and non-hold operation regardless of the settings specified in
“AND/OR Operation of Alarm Output Relays” and “Non-Hold/Hold Operation of Alarm Output
Relays” described below.
• If diagnosis output is enabled, I01 is set to diagnosis output.
<Related Topics>
Setting the reflash alarm: Section 7.1
1-10
1.3 Alarms
AND/OR Operation of Alarm Output Relays
When multiple alarms are assigned to one alarm output relay, the condition for activating
the alarm output relay can be selected from the following:
• AND: Activated when all assigned alarms are occurring simultaneously.
• OR: Activated when any of the specified alarms is occurring.
Channel 01
Alarm
Channel 02
AND
Alarm output relay
OR
The alarm output relays assigned to AND operation are specified as follows: “I01 (first
relay) to Ixx (where xx is the relay number).”
The default setting is “no AND relay.”
Note
• If the reflash alarm is enabled, I01 to I03 are fixed to OR operation. Specifying AND
produces no effect.
• If diagnosis output is enabled, I01 is set to diagnosis output. Specifying AND produces no
effect.
1
Functional Description
<Related Topics>
Setting the AND operation: Section 7.1
Energized/De-energized Operation of Alarm Output Relays
You can select whether the alarm output relay is energized or de-energized when an
alarm occurs. If de-energized is selected, the status of the alarm output relay when an
alarm occurs is the same as the status that results when the power is shut down. The
setting applies to all alarm output relays.
The default setting is energized.
NO
Energize
De-energize
NO : Normally Opened, C : Common, NC : Normally Closed
CNCNOCNCNOCNC
NC
When power is
shut down
NOCNCNOCNCNOC
When alarm is
not occurring
When alarm is
occurring
Note
If diagnosis output is enabled, I01 is fixed to de-energized operation.
<Related Topics>
Setting the energized/de-energized operation of alarm output relays: Section 7.1
1-11
1.3 Alarms
Non-Hold/Hold Operation of Alarm Output Relays
The alarm output relay can be set to operate in the following fashion when the alarm
condition is no longer met.
• Turn off the relay output (non-hold).
• Hold the relay output until the alarm ACK operation is executed (hold).
The setting applies to all alarm output relays.
The default setting is non-hold.
HoldNon-hold
Alarm occurrence
Alarm
ACK
Alarm
ACK
Alarm
ACK
Alarm
Alarm output
relay
Note
<Related Topics>
Setting the non-hold/hold operation of alarm output relays: Section 7.1
Alarm ACK Operation
The alarm acknowledge (alarm ACK) operation releases all alarm indications and relay
outputs (/A1, /A2, /A3, /A4, and /A5 options) that are activated when the alarm indication
or alarm output relay is set to hold operation. This operation can be executed from the
front panel key.
<Related Topics>
Alarm ACK operation: Section 3.12
Alarm release
Activated
Released
• If the reflash alarm is enabled, I01 to I03 are fixed to non-hold operation. Specifying Hold
produces no effect.
• If diagnosis output is enabled, I01 is fixed to non-hold operation. Specifying Hold produces
no effect.
or
or
1-12
1.4Recording
The recorder is capable of recording the measured values with pens or dots (trend
recording) as well as various other types of information.
Recording Example on the Pen Model
1
Functional Description
Recording Example on the Dot Model
The recording examples may appear differently from the actual recording as a result of functional
improvements made on the recorder after this manual was written.
<Related Topics>
Starting/Stopping recording: Section 3.5
1-13
1.4 Recording
Trend Recording
The measured values are printed within a width of 100 mm.
Recording Method (Pen Model)
• The measured value is updated every scan interval and continuously recorded.
• The recording colors in order from channel 01 are red, green, blue, and violet.
Recording Method (Dot Model)
• The most recent measured value is recorded with a dot every dot printing interval.
The dot printing interval is in the range of 10 s to 90 s. There are two recording
methods from which you can select. One method automatically adjusts the dot
printing interval according to the chart speed so that the dots do not overlap. The
other method records at the fastest dot printing interval at all times.
• The recording colors are assigned to each set (channels 01-06, 07-12, 13-18, and 19-
24) of six channels in ascending order as follows: purple, red, green, blue, brown, and
black. The recording color of each channel can be changed among these six colors.
• For each channel, trend recording can be enabled or disabled.
<Related Topics>
Setting the dot printing interval: Section 6.1
Changing the recording color: Section 7.5
Enabling/Disabling trend recording for each channel: Section 6.6
Chart Speed
On the pen model, the chart speed can be selected from 82 settings in the range of 5 to
12000 mm/h.
On the dot model, the chart speed can be set in the range of 1 to 1500 mm/h in 1-mm
steps.
The default setting is 25 mm/h.
<Related Topics>
Setting the chart speed: Section 5.4
Zone Recording
A recording zone is assigned to each channel.
1-14
Zone 1Zone 2Zone 3
<Related Topics>
Setting the zone recording: Section 6.4
1.4 Recording
Partial Expanded Recording
This function expands a section of the recording range. By default, partial expanded
recording is disabled.
CompressedExpanded
<Related Topics>
Setting the partial expanded recording: Section 7.13 and 6.5
Pen Offset Compensation (Pen Model)
This function compensates for the pen offset (phase difference) along the time axis.
On 2-pen, 3-pen, and 4-pen recorders, there are offsets along the time axis (phase
difference) between the pens. This offset is corrected when pen offset compensation is
used.
1
Functional Description
Same time
Below is an explanation for the 2-pen model.
The recording of these two pens are offset by an amount of phase P. If pen offset
compensation is enabled, the measured values of pen 1 are stored in the memory, and
recorded when the chart paper is fed by an amount corresponding to P.
Reference pen (pen 2)
Pen 1
Recorder front panel
Chart paper
P
Chart feeding direction
By default, this function is disabled.
<Related Topics>
Setting the pen offset compensation: Section 7.6
1-15
1.4 Recording
Printout
The figure below is used to explain the printout contents. The actual printout and font
are different from those illustrated in the figure. The printout positions are also slightly
different.
Printout Example on the Pen Model
Manual printout
Nov.09.04 15:00
1 223.5mg/cm
3 H 591.6˚C 4 −0.222V
Periodic printout
Nov.09.04!
13:50*
1 218.7mg/cm
2 390.6µS/cm
3 H 598.4˚C
4 d −0.222V
0.0 500.0
1CH mg/cm
RED
50mm/h_
Recording color
3
2 437.2µS/cm
Time tick cancel mark
3
Offset compensation mark
Alarm
Delta computation
Time tick
New chart speed printout
50mm/h*14:55
Scale
3
Buffer overflow mark
Alarm printout
1H3*10:09
1H3 10:05
Message printout
09:52*START#205 ABCDEF
Recording start printout
08:00*25mm/h
Time tick
The time ticks are marks that indicate the positions of the date/time on the chart paper.
Time tick cancel mark
An exclamation point (!) is printed when the periodic printout time tick was not printed at the
correct position.
<Related Topics>
Setting the channel printout (dot model)/pen color printout (pen model): Section 7.7
Setting the alarm printout, new chart speed printout, and recording start printout:
Section 7.7 and 7.16
Clearing the alarm printout buffer: Section 3.9
Setting the periodic printout: Section 6.6, 7.7, and 7.8
Executing manual print: Section 3.7
Printing messages: Section 6.8 and 3.10
Printing settings: Section 3.8
1-16
1.4 Recording
Printout Example on the Dot Model
Manual printout
Nov.09.04 16:00
01 223.5mg/cm
03 H 591.6˚C 04 −0.222V
05 −0.665V 06 L −0.448V
Periodic printout
Nov.09.04
13:50
01 218.7mg/cm
02 390.6µS/cm
03 H 598.4˚C
04 d −0.222V
05 −0.995V
06 L −0.448V
0.0 500.0
01CH mg/cm
50mm/h_
Channel printout
3
02 437.2µS/cm
1
3
1
Delta computation
Alarm
Time tick
1
1
New chart speed printout
_50mm/h*14:55
Time tick
Buffer overflow mark
01H3*10:09
01H3 10:05
09:52*START#205 ABCDEF
Time tick
Recording start printout
_08:00*25mm/h
Alarm printout
Message printout
1
Functional Description
Scale
3
Channel Printout (Dot Model Only)
Prints the channel No. or tag by the trend recording. The channel No. or tag is printed
every approximately 25 mm on the chart paper. The channel printout can be enabled or
disabled. By default, the channel printout is enabled.
1-17
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