Chino KR2000 Instruction manual

INST.No. INE-365E
NST-No. KR2-01-1
Thank you for purchasing the KR2000 series graphic recorder.
Before using your new recorder, please be sure to read this instruction manual that will advise you on
how to use the instrument correctly and safely and how to prevent problems.
Graphic Recorder
KR2000
General
Instruction Manual

CONTENTS
Preface １
For safe use ２
Main features and functions ４
Before use ５
3.1 Exterior check ５
3.2 Model check ５
3.3 Checking attachments ６
Installation ７
4.1 Mounting location ７
4.2 External dimensions ７
4.3 Method of mounting the panel ８
Connections ９
5.1 Terminal board arrangement ９
5.2 Precautions while connections １１
5.3 Connection of power and protective
conductor terminals １２
5.4 Connection of measuring input terminal １３
5.5 Connection of alarm output terminals
(option) １４
5.6 Connection of digital input terminals and
function selection (option) １６
5.7 Connection of communication I/F terminal
(partly option) １７
Operation ２１
Name of each part ２２
7.1 Name of front panel and its major
functions ２２
7.2 Name of the keys and their functions ２３
7.3 Method of inputting the characters ２４
Screen switching method ２６
Name and functions of operation
screen ２８
9.1 Common operations of operation screen ２８
9.2 Status bar ３０
9.3 Real time trend screen ３１
9.4 Bar graph screen ３２
9.5 Numeric display screen ３２
9.6 Historical trend screen ３３
9.7 Dual trend screen ３４
9.8 Alarm display screen ３４
9.9 Internal memory screen ３５
9.10 Card file screen ３７
9.11 Marker list screen ３７
Initial settings ３８
Flow chart of HOME settings &
MENU settings ４２
HOME settings ４４
12.1 Setting with HOME settings ４４
12.2 Confirming the specifications with
HOME settings screen ４６
MENU settings ４７
13.1 Setting MENU setting screen ４７
13.2 Input operation settings ５１
13.3 Display settings ６０
13.4 Alarm settings ６７
13.5 File settings ６９
13.6 Totalizer reset settings ７３
13.7 Schedule settings ７４
13.8 Marker text settings ７５
13.9 Memory operation ７６
13.10 Network settings ７７
13.11 System settings ８６
Setting/Displaying on WEB screen ９２
14.1 Display and settings of the Web screen ９２
Read the recorded data using USB ９９
15.1 Outline ９９
15.2 Operation environment ９９
15.3 Access to data file ９９
Low order communications(read) １０１
16.1 Outline １０１
16.2 Procedure of connection to low order
instrument １０２
Low order communications(write) １０７
17.1 Outline １０７
17.2 Register to the instrument １０８
Scale calibration １０９
17.1 Scale calibration １０９
17.2 Calibration environment １０９
17.3 Preparation １０９
17.4 Connections １１０
17.5 Zero and span adjustment １１２
Recommended parts replacement
interval １１６
18.1 Operating conditions １１６
18.2 Reference of parts replacement intervals １１６
Troubleshooting １１７
Specifications １１８
Appendix A. Report application (Sample) １２１
２
１
３
４
５
６
７
８
９
11
13
14
15
19
16
10
12
21
18
20
17

－ 1 －
PREFACE
Thank you for purchasing the KR2000 series graphic recorder.
Before using your new recorder, please be sure to read this instruction manual that will advise you on
how to use the instrument correctly and safely and how to prevent problems.
1. Separate instruction manuals
This instruction manual describes the optional specifications of alarm output and report application of
appendix as well as the operation of standard specifications. When the instrument is with the higher
order or low order serial communications interfaces (option), the separate instruction manual for
communications interfaces is attached. For other options you specified, their instruction manuals are
attached respectively. Read these instruction manuals together with this manual.
2. Request
●Request to instrumentation engineers, constructors, and sale agents
Make sure to deliver this instruction to the operator of this instrument.
●Request to the operator of this instrument
This instruction manual is necessary for maintenance, too. Keep this manual with care until the
instrument is discarded.
3. Attention while unpacking
●Do not drop the recorder when take it out of the box
●When transporting this recorder, pack the instrument in the box and then put it with cushions in
another box. We recommend keeping the box for transport.
●When not using the recorder for a while after taking it from the panel, put the recorder in the box and
store at room temperature and in a dust free atmosphere.
4. Disposal
Separate the box, plastic bag, and shock material the recorder is packaged in according to the garbage
collection method of the each community, and please cooperate to recycle.
1. A small amount of hazardous substance below the specified level with
RoHS directive is included in this recorder.
2. When disposing the controller always request a professional to do it or
contact your dealer or our nearest office.
Caution
3. This recorder includes a lithium battery. When disposing the lithium
battery always request a professional to do it.

－ 2 －
For safe use
This section ”FOR SAFE USE” has been compiled to promote the correct use of the instrument in
order to prevent human injury or damage to property before they occur. Please read the following
information carefully and be sure to observe the warnings and cautions in it.
1. Preconditions for use
This instrument is designed for indoor use by mounting it on an indoor instrumentation panel.
2. Labels on this instrument
The following labels are used for safe use.
Label Name Meaning
Alert symbol mark
Indicates the location that should refer to the
manual in order to prevent an electric shock and
injury.
Protective conductor
terminal
A terminal is provided for connection to the
protective conductor of the power supply facility for
the prevention of an electric shock.
3. Symbols in this manual
The cautions to be observed for preventing the damage of this instrument and unexpected
accidents are sorted by the following symbols according to their importance degrees for enabling
operators to use this instrument safely.
The nonobservance of information under this symbol may result in
hazardous, critical or serious injury to the user.
The nonobservance of information under this symbol may result in a
hazardous situation or a light injury to the user or in physical damage to
the property.
This symbol shows a caution when the instrument dose not function as
specified or when such a possibility exists.
This reference servers as a supplement for handling and operation, and it
may be convenient for the user.
１
Warning
Caution
Remarks
Reference

－ 3 －
This paragraph covers important warning for safety to be observed before reading the instructions.
Fully understand the following warning before reading this manual. These warnings are important for
preventing the damage to human bodies as well as accidents.
1. Switch and overcurrent protective device
The KR2000 series graphic recorder in not
provided with a replaceable overcurrent protective
device. Prepare a switch and an overcurrent
protective device for the power supply (circuit
breakers, circuit protectors or the like) within 3m
of this recorder in a location where the operator
can access easily. Use a switch and an
overcurrent protective device conforming to
IEC947-1 and IEC947-3.
2. Be sure to ground this recorder
Before turning the power on, connect the
protective conductor terminal of this recorder to
the protective conductor of the power supply
facility. In order to prevent an accident by electric
shock, do not disconnect this connection during
operations.
3. Before turning on the power supply
In order to ensure safety, before turning on the
external power switch make sure that the power
voltage is within the range indicated on the power
supply label.
4. Don’t repair or modify this recorder
Make sure that any persons other than service
engineers approved by CHINO CORPORATION
do not repair or modify this instrument by
replacing parts. Otherwise it may be damaged or
will not function normally or an accident such as
electric shock may occur. For ordinary operation,
it is not necessary to pull out the internal unit.
5. Use this recorder following
this instruction manual
Use this recorder correctly and safely by following this instruction manual. CHINO CORPORATION
will not be responsible for any injury, damage, lost profit or any other claim, which may result from
its wrong use.
6. Turn off the power supply if an abnormal symptom occurs
Turn off the power supply immediately and contact your local CHINO’s sales agent if any abnormal
odor, noise or any smoke occurs, or if this recorder becomes high temperature that is too hot to be
touched.
Power/protective
conductor
terminals
To the protective
conductor of power
supply facility
Power supply
Overcurrent
protective
device
(250V 3A)
Switch
L
N
The following fuse is mounted in the power supply
unit of this recorder for safety use. However, this
fuse is not replaceable.
Fuse in the power supply
Reference
Manufacturer：Nippon Seisen Cable., Ltd.
Model：FCT 250V 3A 8H02
WARNINGS
Power terminal
Protective conductor terminal Power
supply label
100-240V AC
50/60Hz 50VA MAX

－ 4 －
Main features and functions
Besides measuring temperature and various industrial quantities of multi channels and displaying real
time trends, bar graphs, numeric value, etc. in various formats on 5.6 inch TFT color LCD, this recorder
can store data into the internal memory or a memory card (a CF card) and replay them if required. Stored
data can be used using commercial software like EXCEL, etc. Data analysis software is also available.
Easy
management of
measurement
result
The monitoring of measurement results is easy since the data are displayed on
various formats of screens. The precious data in the CF card can be read and the
stored data can be managed using commercial software like EXCEL (Registered
trademark of Microsoft Corporation), etc.
Various screen
displays
Real time trends, bar graphs, data (in a table format) and combined displays of
“real time trends and bar graphs”, “real time trends and numeric values” and “real
time trends and historical trends” can be arbitrarily selected and monitored with
most suitable screens to meet your requirements. As alarm display screen
displaying past alarm activation status collectively and a marker list screen are also
available.
In addition, up to 5 files can be registered. With easy operation, these screens can
be switched.
Various memory
functions
Start/stop of data storage can be executed by arbitrary condition settings like key
operation, alarm settings, time settings, etc. and the simultaneous storage to
maximum 5 files can also be executed. In normal operations, data are stored into
the internal memory and can be saved on the CF memory card.
Analog recorder
feeling
As the trend screen displays data on a chart with scale plates and pointers, the
data can be monitored like analog recorder.
Marker function
Marker and marker text (alphanumeric characters, maximum 30 characters) can be
written on the trend screen. A marker text is written arbitrarily, and also 50 types of
marker texts can be registered in advance and these marker texts can be written
with key operations. The marker texts can be written on the historical trend screen
(replay), too. Markings only without marker texts are also available.
MODBUS
communication
Parameter settings, data acquisition and operation can be executed with the
optional high order communication. As communication protocol utilizes MODBUS,
this recorder can communicate with program indicator equipped with the MODBUS
protocol without creating any communication software and the configuration of a
system is easy. (MODBUS: The registered trademark of Schneider Electric SA)
Consumables
not required
Since consumables like charts, pens and inks as used in recorders are not
required, this recorder is clean and less time consuming.
Easy setup
The easy interactive parameter setting offers parameter settings by selecting a setting
item from the menu screen with key or touch-panel operation and then by opening a
window.
Also the operation can be executed easily with the required parameter settings on
the ”Simple settings (HOME)” screen.
Software
package is
available
Data analysis can be executed easily on the PC as software package for data
analysis is available.
●Software for analysis : (Windows98,Me,2000,XP version)
２

－ 5 －
Before use
Check the following items before using the recorder. If something is wrong, contact your local CHINO's
sales agent.
3.1 Exterior check
Check that the instrument is not broken on the outer side.
3.2 Model check
The model number and serial number of the KR 2000 series graphic recorder can be confirmed by the
label on the upper side of the case.
Check the model of your instrument from the model code before use.
■Model code
KR21 －
Type (Fixed as 2): 2 types
Input type (Fixed as 1): Universal input
(DC voltage, thermocouple, resistor thermometer)
Measurement points/Sampling rate
60: 6-point input /100ms
20: 12 point input /100ms
61: 6 point input /1s
21: 12-point input /1s
Communication interface (Option)
N: None
R: High order (RS232C /RS485) switchable
Q: High order (RS232C /RS485) + Low order (RS485)
Alarm output, Digital input
0: None
1: Mechanical relay output (12 points ‘a’ contact)
2: Mechanical relay output (6 points ‘c’ contact)
7: Digital input (8 points) + Alarm relay output (8 points)
Power supply,
A: 100V – 240VAC
* When the recording cycle is set less than 0.5 seconds at the KR2161/2121, input channel numbers
become 4 points automatically.
３
KR21**-***
KR*********
MADE IN JAPAN
Model (Check with model code)
Serial No.

－ 6 －
3.3 Checking attachments
Package contains the following attachments. Please confirm.
Parts name Quantity Remarks
1 INE-365□(For KR 2000 series graphic recorder) CD-ROM
INE-802□(Communications interfaces)
(1 copy) INE-366□(Mounting/connections edition）A4 19 pages
①Instruction
manual
1 RZMC-01-□(CF card)
②Mounting
bracket 2 For panel mounting
③Terminal
screw 5 For M3.5, input terminal and alarm (digital input) terminal (Spares for
missing)
④CF card 1 RZ-CMC128 (128MB)
②Mounting bracket
③Terminal screws
①Operation manual
④CF card

－ 7 －
Installation
4.1 Mounting location
In order to avoid unfavorable effects on measurement accuracy and recording operation, mount the KR
2000 series graphic recorder at the following locations.
1) Industrial environment
Select a place away from a source generating electric field and/or magnetic field and where mechanical
vibrations/shock is not existed.
●Over voltage category……Ⅱ●Altitude…………2000m or less
●Pollution degree…………...2 ●Place of use……Indoor
2) Ambient temperature/humidity
Keep away from direct sunlight and so not close an area around the KR 2000 series graphic recorder to
avoid temperature increase.
●Place with stable ambient temperature of around 23°C and humidity 50%RH
●Place not exposed to hot drafts (50°C or more) for avoiding deformation of the front panel
●Place where there are no wind and no heat source near terminals for avoiding measurement
errors.
3) Atmosphere
●Avoid a place where flammable gases exist.
●Avoid a place with dust, smoke, vapors etc.
4) Mounting angle
●Lateral tilting…0°
●Longitudinal tilting…Forward tilting: 0°, Backward tilting: 0-20°
Mounting angle other than the above angles will have unfavorable effects on recording operation.
4.2 External dimensions
The following figure shows the dimensions of KR 2000 series graphic recorder with its mounting
brackets.
４
Unit : mm

－ 8 －
4.3 Method of mounting the panel
1) Panel cut size
2) Mounting method
(1) Insert the KR 2000 series graphic recorder in the
panel cutout from the front of the panel.
(2) Fixed the KR 2000 series graphic recorder using
mounting brackets (Screw tightening torque: 1.0
N・m). Mounting brackets are fixed on the top and
bottom.
パネルカット
138
138
+1
0
+1 0
(mm)
200
200
(mm)
Panel cut
●Minimum interval for installation of multiple instruments
■Mount on the panel and use
(1)The KR2000 series graphic recorder has been designed to be mounted
on an indoor instrumentation panel.
(2) Use a panel made of a steel plate of 2mm to 6mm in thickness or a
panel equivalent in strength.
Warning
Mounting bracket
Panel thickness (2 to 6 mm)
Mounting bracket

－ 9 －
Connections
5.1 Terminal board arrangement
The following diagram shows the terminal board arrangement in which option (alarm relay output [12
points ‘a’ contact], communication interface) are mounted. Connecter for Ethernet is a standard
mounting.
The following diagram shows the terminal board arrangement in which option (alarm relay output [6
points ‘c’ contact], communication interface) are mounted. Connecter for Ethernet is a standard
mounting.
５
For the connection of communication terminal,
refer to the separate “Communication interface
instruction manual”.
(Note) Alarm output in the diagram
is mechanical relay “a”
contact point specification.
TC,mV(＋), RTD(A) terminal
TC,mV
(
－
)
, RTD
(
B
)
terminal
RTD
(
B
)
terminal
Connector for Ethernet
Communications terminal (M4) (for options) Power/protective conductor terminal (M4)
N.O terminal
(
M 3.5
)
A
larm relay output
(12 points
‘a’ contact)
COM terminal
(
M3.5
)
(Note) Measurement input in the
diagram is 12 points model.
Measurin
g
in
p
ut terminals
(
M3.5
)
1
2
3 4
5
6
78910 11 1
2
(Note) Alarm output in the diagram is
mechanical relay “C” contact
point specification.
Alarm
r
elay output
(6 points ‘c’ contact)
N.O terminal(M3.5)
COM terminal(M3.5)
N.O terminal (M3.5)
Communications terminal (M4)(option) Power/protective conductor terminals(M4)
TC,mV(＋), RTD(A)terminal
TC,mV(－), RTD(B)terminal
RTD(B)terminal
Measuring input terminals
(
M3.5
)
1 2 34
56789
10 11 12 (Note) Measurement input in the
diagram is 12 points model.
Connector for Ethernet
A
larm output

－ 10 －
Following figure is terminal board diagram for option (digital input [8 points] + alarm MOS relay output [8
points]) in KR2000, equipped with communication interface. Connecter for Ethernet is a standard
mounting.
■Alert symbol marks ( ) and places
The alert mark ( ) is pasted at danger places where may causes electric shock. (See the
following table).
Name of terminals Power terminals Measurement
input terminals
Mechanical relay
‘c’ contact alarm
terminals
MOS relay, mechanical
relay ‘a’ contact alarm
terminals
Places marked with
the symbol
Lower left of
power terminals
Upper left of
terminal cover
Upper left of
terminal cover
Beside alarm
terminals
Warning
Thermocouple input terminal block cannot be replaced by terminal block of other instrument.
If replaced measurement error occurs.
Replacement of thermocouple input terminal block
Notes
The input terminal block and alarm terminal block (including the contact terminal block) are
removable for easy connections.
(1) Each terminal block can be removed by removing two mounting screws.
(2) Each terminal block is connected to the recorder by a
connector.
■Turn off the power supply in advance
For mounting or dismounting the terminal
block, turn off the external power switch to
prevent the electric circuits from being
damaged.
Caution
Input terminal and alarm terminal blocks are removable
Remarks
(Note) Alarm output in the diagram is
MOS relay ‘a’ contact point
specification.
(Note) Measurement input in the
diagram is 12 points model.
Communications terminal (M4) (options) Power/protective conductor terminal (M4)
Measuring input terminals
(M3.5)
1 2 345678910 11 12
Connector for Ethernet
TC,mV(＋), RTD(A)terminal
TC,mV(－), RTD(B)terminal
RTD(B)terminal
COM terminal (M3.5)
N.O terminal (M3.5)
A
larm MOS
relay output
(8 points)
No voltage contact point input (8 point
input)
No voltage contact point
input 8 points input
(From left)
CH1,CH2,CH3-CH8
No voltage contact point input
COM
（4 points common）
Input terminal
blocks
Mounting
screws
Alarm terminal
blocks
Mounting
screws

－ 11 －
5.2 Precautions while connections
Observe the following cautions during connections for securing safety and reliability.
1) Power supply
Use a single-phase power supply having a stable
voltage without any waveform distortion for the
purpose of preventing wrong operations.
2) Keep the input/output connections away
from a high voltage power circuit
Don’t place the input/output cables close or in parallel
with any strong power circuits including power line.
Place the cables 50 cm or more away from high
voltage power circuits when they are placed close or
in parallel to other circuits.
3) Keep the thermocouple input away from a
heat source
For thermocouple inputs, keep the input terminals
away from a heat source (a heating body) to reduce a
reference junction compensation error. Don’t expose
the input terminals to direct sunlight, etc.
4) Keep all connection cables away from
noises
Keep all connection cables away from noise source
as far as possible, otherwise unexpected malfunction
may occur. Provide a solution if the cables cannot be
separated from a noise source due to unavoidable
circumstances.
Major
noise
sources
●Electromagnetic switch, etc.
●Power line having waveform
distortion
●Inverter
●Thyristor regulator
Counter
measures
Insert noise filters between power
terminals and input/output
terminals. A CR filter is often used.
5) Use crimp style terminals
(1) Fix crimp style terminals to termination of
connection cables for preventing the looseness or
disconnection of terminals and a short-circuit
failure between terminals.
(2) Use the crimp style terminals with insulation
sleeve for preventing an electric shock.
6) Unused terminals
Don’t use any unused terminals for relaying;
otherwise the electric circuits may be damaged.
Kinds of terminals and terminal process
Terminal block Screw
diameter
Tightening
torque Termination (Unit: mm)
Power and
protective
conductor and
communication
terminal
M4 1.2N.m
Terminal other
than described
above
M3.5 0.8N.m
As far as possible use TypeＯ.
t:0.8
Less than 8.5 More than 4.3
With an insulation sleeve
Less than 8More than 3.7
t:0.8
With an insulation sleeve
Less than 8More than 3.7
t:0.8
With an insulation sleeve
(1) A switch and an overcurrent
protective device
Prepare a switch and an overcurrent protective
device (3A) to the power supply for preventing an
electric shock accident during connection work.
This recorder is not provided with any replaceable
fuse.
(2) Turn off the power supply before
connections
Be sure to turn OFF the power supply before
connecting cables to the power and the
input/output terminals to prevent an electric shock.
Warning
■Secure the connected cables properly.
Secure the connected cables so as not to allow them to be hooked by a person or a substance, otherwise
the connections may be cut and disrupted that may cause an electric shock or other accidents.
Warning
Type O
Type O Type Y

－12 －
5.3 Connection of power and protective conductor terminals
1) Power and protective conductor terminals
2) Connection of power terminals
For connection to the power terminals, use a 600 V
PVC insulated cable terminated by the crimp style
terminals with insulation sleeve.
Note) Use the cords approved by the following
standards.
(1) IEC 227-3
(2) ANSI/UL817
(3) CSA C22.2 No.21/49
3) Connection of protective conductor
terminal
Be sure to connect this terminal to the protective
conductor of the power supply facility. For this
connection, use a cable terminated by the crimp style
terminals with insulation sleeve.
• Grounding wire:
Copper wire 2 mm2or more (green/yellow)
■Turn off the power supply
Be sure to turn off the power supply before connecting the cable to the power supply and
protective conductor terminals to prevent an electric shock.
Warning
■Be careful with the power voltage and
noise
The power voltage of this instrument is indicated
beside the power terminals.
Don’t apply any voltage other than indicated;
otherwise a malfunction may result.
If noise is generated at the power supply,
provide a noise reduction transformer, etc.
Caution
This indication conforms to the CSA standard,
Canada. The live side of the single-phase AC
power supply is indicated as L, and the neutral
side is indicated as N. Observe the L and N
connections for obtaining satisfactory
performance.
L/N indication of power terminals
Notes
■ mark at power terminals
A voltage of 100 to 240 V AC is applied to the
power terminals after connection. Be sure to
mount the power terminal cover to prevent an
electric shock.
Warning
Protective
conductor
terminal
Power
L N
100-240V AC
50/60Hz 50VA MAX
Power supply (voltage, frequency, power consumption)
Mount the terminal cover
after connections.
L N
A copper wire with 2 mm2
or more (green/yellow)
Be sure to connect to the
protective conductor of
the power supply facility.
Power supply
600 V vinyl insulated cable

－13 －
5.4 Connection of measuring input terminals
1) Measuring input terminals
Be sure to turn off the power supply to prevent an
electric shock.
For the connections to the input terminals, use
cables terminated by the crimp style terminals
with insulation sleeve
2) Connections of DC voltage (current) input
Use twisted cables for instrumentation as the
input cables for the purpose of suppressing
noises. For current inputs, mount shunt resistors
to the channels to be measured before
connections.
3) Connection of thermocouple (TC) inputs
Be sure to use thermocouple wires (or extension
wires) to the input terminals of this recorder. If a
copper wire is used halfway, a noticeable
measuring error occurs. Don’t use a pair of
thermocouple wires in parallel with other
instruments (controller, etc.), otherwise a
malfunction may occur.
4) Connection of resistance thermometer
(RTD) input
Use a 3-core cable where each lead wire has an
equal resistance value. Don’t use one resistance
thermometer in parallel with other instruments
(controller, etc.).
●Resistance
thermometer input
3 core cable
(Same diameter, same length)
Note: The resistance of each cable is
less than 10 Ω. All the 3 wires should be
of the same resistance value.
1 2 3 4 5 6
Resistance thermometer
A
B
B
■Allowable input voltage
Input type Allowable input voltage
Voltage,
thermocouple input ±10VDC
Resistance
thermometer input ± 6VDC
* ±60 V DC with channel settings to the ±5 V
or higher range.
Twisted cable
for
instrumentation
DC voltage input
（
＋
）
(－)
1 2 3 4 5 6
●DC voltage (Current)
input
Compensation
lead wire
Thermocouple
Red (＋)
White (－)
1 2 3 4 5 6
●Thermocouple
(TC) input
■mark of measuring input terminals
A high voltage may be applied to the
measuring input terminals due to common
mode noises. The allowable noise value is
lower than 30 V AC or lower than 60 V DC.
Make sure that the noises are lower than the
allowable values. Mount the terminal cover
after connections for the purpose of preventing
an electric shock and to protect the input wires.
In the case of thermocouple input, the
mounting of the terminal cover can reduce the
reference junction compensation error.
Warning
Caution
TC, mV(+), RTD(A) terminal and TC, mV(-), RTD(B)
terminal are insulated each channels but RTD(B)
terminal is short-circuited between channels. KR21*0
is short-circuited between channel 1 to 4, 5 to 8, 9 to
12, and KR21*1 is short-circuit all channel.
Isolation of measured input terminal
Notes

－14 －
5.5 Connection of alarm output terminals (option)
This is for the recorder with alarm output terminals (option).
1) Alarm output terminal
The terminal arrangement depends upon the type of alarm output.
Alarm relay output (1a)
Alarm relay output (1c)
Alarm MOS relay output (1a)
N.O terminal (M 3.5)
COM terminal (M 3.5)
Alarm relay
output
(12 points)
Digital input (8 points)
(From left) DI 1,DI 2,DI 3 - DI 8
Digital input DI COM
(4 points common)
COM terminal (M 3.5)
N.O terminal (M 3.5)
No voltage contact point input 8 point input
Alarm MOS relay
output
(8 points)
Alarm relay output
N.O terminal (M 3.5)
COM terminal (M 3.5)
N.C terminal (M 3.5)
Alarm relay
output
(6 points)

－15 －
2) Connections
Turn off the power supply and buffer relay power supply before connections to prevent an electric shock.
(1) Connect cables to the load via a buffer relay.
(2) Use cables with the crimp style terminals with insulation sleeves for the alarm output terminals.
Example of MOS relay and mechanical relay ‘a’
contact output Example of mechanical relay ‘c’ contact output
3) Precautions for connection
Be careful with the following cautions for connections.
Item Contents
Contact rating of MOS relay
outputs
●Maximum voltage…240V (AC,DC)
●Maximum current…50mA (AC,DC) * Irrespective of load types
(Minimum load)
Contact rating of Mechanical
relay outputs
(Common to ‘a‘ contact and ‘c’
contact)
Mounting of contact protective
element Z
●Mount a contact protective element conforming to the buffer relay.
The MOS relay is broken, if a signal exceeding the contact rating is
applied even momentarily.
●To prevent a malfunction being caused by a light load, the most
effective mounting position for the element is on the coil side of the
buffer relay ('a' in the connection diagrams under (2) on 5.5)
Selection of buffer relay
(1) Coil rating … Less than the contact rating of output terminals
(2) Contact rating ... More than twice the load current
A coil surge absorption element built-in type relay is recommendable.
Mount an additional buffer relay if a buffer relay satisfying the load rating
is not available.
Selection of contact protective
element
Mount a contact protective element if a surge absorption element built-in
buffer relay is not available. This element is generally composed of C
(capacitor) and R (resistor).
<Reference value of C·R>
C:0.01μF (Rating around 1KV)
R:100 to 150Ω(Rating around 1W)
■ mark of alarm output terminals
Connect a load not exceeding the specified contact capacity
to the alarm output terminals. A buffer relay power supply is
applied to the alarm output terminals after connections. Do
not touch these terminals since an electric shock will occur.
Be sure to mount the terminal cover after connections.
■Take a safety measure
An alarm output of this recorder may become
defective caused by wrong operation,
failures, and other abnormal inputs.
Take a safety measure against an output
failure before use as occasion calls.
Caution
Power supply Resistive load Inductive load
100 V AC 0.5 A 0.2 A
240 V AC 0.2 A 0.1 A
30 V DC 0.3 A 0.1 A
Buffer rela
y
Powe
r
ba
KR2000 series graphic recorder
N. O
COM
N. C
※
: Contact protective element (It is recommended to
mount this element on the a side)
N
.C terminal - Open relay contact at alarm activation that is
the reverse action to N.O terminal.
Load
ｂａ
Buffer relay
KR2000 series
graphic recorder
N.O
COM
: Contact point protective element (It is recommended to
mount this element on the a side)
Powe
r
Load
Warning
(Minimum load)
100μA100mVDC

－16 －
5.6 Connection of digital input terminals and function selection (option)
This is for the recorder with alarm output terminals (option)
1) Digital input terminal
2) Connections
Turn off the power supply before connections to prevent
an electric shock.
(1) Apply a no-voltage contact signal to digital input
terminals.
(2) Use cables terminated by crimp style terminals with
insulation sleeves for the digital input terminals.
■ Function of the terminals
(1) Digital input ON/OFF (short/open) state can be measured. Select the range type as DI.
(Refer to Para.13.2 Input operation settings.)
(2) Pulse input Used as the pulse input. Select the range type as Pulse (+) and Pulse (-).
(Refer to Para.13.2 Input operation settings.)
(3) Totalizer reset The reset of totalizer is executed. When the digital input terminal specified
becomes ON, the totalizer reset is executed.
(Refer to Para.13.6 Totalizer reset settings.)
(4) Marker The writing of marker. The marker can be written on the trends when the digital
input terminals become ON.
(Refer to Para. 13.8 Marker text settings.)
(5) File drive The recording start/stop of data file in the internal memory is executed.
The recording starts or stops when the digital input terminals become ON or OFF.
(Refer to Para. 13.5 File settings.)
●Voltage when the contact is open :
Approximately 5 V
●Current when contact short :
Approximately 2 mA
Features of digital input terminalNotes
DI 1 2 345 67 8 COM
■Connection example
■No voltage contact input
For the contact to be connected to the Digital
input terminal, use a switch or relay driven at
lower than 30 V AC or lower than 60 V DC,
or manual contacts for very light loads.
Caution
Upper step
Digital input
terminal

－17 －
5.7 Connection of communication I/F terminal (partly option)
The KR2000 can be communicated with a master unit via Ethernet and RS232C or RS485, and with a
slave unit via RS485.
*RS-485/232C terminal and serial communication function are optional.
1) In case of high order communications via Ethernet
[In case of connection with a PC by 1 to 1]
For the connection of a PC and the Ethernet IF by 1 to 1, use the STP crossover cable.
[In case of connections with PCs by N to N]
For the connection to multiple PCs or an existing LAN, use a switching hub and an STP straight cable
between the hub and the Ethernet IF.
2) Kind of communication terminal (option)
STP cross
cable
KR2000
PC
（With LAN function）
Twist pair
straight cable
STP straight
cable
PC
(With LAN function)
Hub
KR2000
SB2
SA2
SB SG
SA1
Low order High order
●RS485 + 485
SG
RD
SD
High order
SB
SA
Low order
● RS485 + 232C
＊SG is common
RS485/232C change over switch
Ethernet connector
RS485/232C terminal

－18 －
3) Connection of High order communication RS-232C
The communication terminals of this recorder are three terminals of SD, RD and SG and a control signal
is not used. General personal computers use the control signal. Wiring processing for control signal in a
connector depends upon how the control signal is used in a personal computer. For details, refer to the
instruction manual for your personal computer.
(1) Example of 9 pin connector
(2) Example of 25 pin connector
PC KR2000 series
graphic recorder
CD
RD
SD
ER
SG
DR
RS
CS
1
2
3
4
5
6
7
8
SD
RD
SG
Within 15m
KR2000 series
graphic recorder
PC
(Example 1)
PC
(Example 2)
PC
(Example 3)
RS
CD
SD
RD
CS
DR
SG
ER
2
3
4
5
6
7
8
20
RD
SD
SG SG
SD
RD
SD
RD
RS
CS
DR
SG
CD
ER
2
3
4
5
6
7
8
20
Within 15m
SG
RD
SD
SD
RD
RS
CS
DR
SG
CD
ER
2
3
4
5
6
7
8
20