Panasonic KT2 User manual

TEMPERATURE CONTROLLER
KT2
INSTRUCTION MANUAL

2
P
Pr re ef fa ac ce e
Thank you for purchasing Temperature Controller KT2.
This manual contains instructions for the mounting, functions, operations and notes for operating the KT2.
For model confirmation and unit specifications, please read this manual carefully before starting operation.
To prevent accidents arising from the misuse of this controller, please ensure the operator
receives this manual.
Characters used in this manual
Indication
Number, / -1 0 1 2 3 4 5 6 7 8 9
Indication
Alphabet A B C D E F G H I J K L M
Indication
Alphabet N O P Q R S T U V W X Y Z
Notes
• This instrument should be used in accordance with the specifications described in the manual.
If it is not used in accordance with the specifications, it may malfunction or cause fire.
• Be sure to follow the warnings, cautions and notices. If warnings are not observed, serious injury
or accidents may occur.
• The contents of this instruction manual are subject to change without notice.
• Care has been taken to assure that the contents of this instruction manual are correct, but if there
are any doubts, mistakes or questions, please inform our sales department.
• This instrument is designed to be installed in a control panel. If it is not, measures must be taken to
ensure that power terminals or other high voltage sections cannot be touched.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
•Panasonic Industrial Devices SUNX Co., Ltd. is not liable for any damage or secondary damage(s)
Incurred as a result of using this product, including any indirect damage.
Safety precautions
(Be sure to read these precautions before using our products.)
The safety precautions are classified into two categories: “Warning” and “Caution”.
Depending on circumstances, procedures indicated by Caution may have serious consequences,
so be sure to follow the directions for correct usage.
Warning
Procedures which may lead to dangerous conditions and cause death or serious injury,
if not carried out properly.
Procedures which may lead to dangerous conditions and cause superficial to medium injury
or physical damage or may degrade or damage the product, if not carried out properly.
Caution

3
1
1. .I In ns st ta al ll la at ti io on np pr re ec ca au ut ti io on ns s
Caution
This instrument is intended to be used under the following environmental conditions
(IEC61010-1): Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:
• A minimum of dust, and an absence of corrosive gases
• No flammable or explosive gases
• No mechanical vibrations or shocks
• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 )
that does not change rapidly
• An ambient non-condensing humidity of 35 to 85%RH
• No large capacity electromagnetic switches or cables through which large current
is flowing
• No water, oil or chemicals or where the vapors of these substances can come into
contact with the unit
Note: Do not install this instrument near flammable material even though the case of this instrument
is made of flame-resistant resin.
Avoid setting this instrument directly on flammable material.
2
2. .W Wi ir ri in ng gp pr re ec ca au ut ti io on ns s
Caution
• Use the solderless terminal with an insulation sleeve in which an M3 screw fits, when wiring the
KT2.
• Tighten the terminal screw with the specified torque. If excessive force is applied to the screw
when tightening, the terminal screw or case may be damaged.
• Do not apply a commercial power source to the sensor which is connected to the input terminal
nor allow the power source to come into contact with the sensor.
• This controller does not have built-in power switch, circuit breaker or fuse.
It is necessary to install them near the controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)
3
3. .R Ru un nn ni in ng ga an nd dm ma ai in nt te en na an nc ce ep pr re ec ca au ut ti io on ns s
Warning
• It is recommended that the PID auto-tuning be performed on the trial run.
• Do not touch live terminals. This may cause electric shock or problems in operation.
• Turn the power supply to the instrument OFF before retightening the terminal and cleaning.
Working on or touching the terminal with the power switched ON may result in severe injury or
death due to Electric Shock.
• Use a soft, dry cloth when cleaning the instrument.
(Alcohol based substances may tarnish or deface the unit)
• As the display section is vulnerable, do not strike or scratch it with a hard object.

4
--- CONTENTS---
1. Model number
1.1 Model number ----------------------------------------------------------------------- 5
1.2 How to read the rated label ------------------------------------------------------ 5
2. Name and functions of the sections ------------------------------------- 5
3. Mounting to the control panel
3.1 Site selection ------------------------------------------------------------------------- 6
3.2 External dimensions ---------------------------------------------------------------- 6
3.3 Panel cutout -------------------------------------------------------------------------- 6
3.4 Mounting ------------------------------------------------------------------------------ 6
4. Wiring ------------------------------------------------------------------------------------- 7
5. Setup procedures
5.1 Setup procedures ------------------------------------------------------------------ 8
5.2 Initial setting ------------------------------------------------------------------------- 8
6. Setup
6.1 Main setting mode ----------------------------------------------------------------- 14
6.2 Sub setting mode ------------------------------------------------------------------ 16
6.3 Auxiliary function setting mode 1 ---------------------------------------------- 17
7. Running
7.1 Start running ------------------------------------------------------------------------ 18
7.2 MV (Control output manipulated variable) indication --------------------- 19
7.3 Control output OFF function ---------------------------------------------------- 19
7.4 Auto-tuning (AT) Perform/Cancel ---------------------------------------------- 19
8. Operation flowchart -------------------------------------------------------------- 20
9. PID auto-tuning -------------------------------------------------------------------- 22
10. Action explanation
10.1 OUT1 (Heating) action --------------------------------------------------------- 23
10.2 OUT1 (Heating) ON/OFF action --------------------------------------------- 23
10.3 A1, A2 action --------------------------------------------------------------------- 24
10.4 Heating/Cooling control action (Heating/Cooling control option) --- 24
10.5 Heating/Cooling control action (When setting dead band)
(Heating/Cooling control option) --------------------------------------------- 25
10.6 Heating/Cooling control action (When setting overlap band)
(Heating/Cooling control option) --------------------------------------------- 25
10.7 Timer action ----------------------------------------------------------------------- 25
11. Specifications
11.1 Standard specifications --------------------------------------------------------- 26
11.2 Optional specifications ---------------------------------------------------------- 29
12.Troubleshooting
12.1 Indication --------------------------------------------------------------------------- 29
12.2 Key operation --------------------------------------------------------------------- 30
12.3 Control ------------------------------------------------------------------------------ 30
13. Character table ------------------------------------------------------------------- 31

5
1. Model number
1.1 Model number
A K T 2 1 0
(1) (2) (3) (4) (5) (6)
(1) Supply voltage ---------------------- 1: 100 to 240V AC 2: 24V AC/DC
(2) Input type ----------------------------- 1: Multi-input (Thermocouple, RTD, DC current and DC voltage
can be selected by keypad operation. For DC current input, 50
shunt resistor (AKT4810, sold separately) must be connected
between input terminals.)
(3) Control output (OUT1) ----------- 1: Relay contact 2: Non-contact voltage (Voltage output for SSR
drive) 3: DC current
(4)Alarm output ------------------------- 0: Not available (When both Healing/Cooling control and Serial
communication are selected)
1:A1 output or A2 output (However, if Healing/Cooling control
is selected, onlyA2 output is available. If Serial communication
is selected, onlyA1 output is available)
2:A1 output +A2 output (When neither Healing/Cooling control
nor Serial communication is selected)
(5) Heating/Cooling control (OUT2) output: 0: Not available 1: Relay contact
(6) Serial communication ------------- Blank: Not available 1: Applied
1.2 How to read the rated label
The rated label is attached to the case and the inner assembly.
(For case) (For inner assembly)
(Fig. 1.2-2)
(Fig. 1.2-1)
2. Name and functions of the sections
1PV/SV display (red): Indicates the PV (Process variable)
and SV (Main set value). During setting mode, characters
and set value of each setting item are indicated alternately.
2MEMO/STEP display (green): Indicates memory number
during fixed value control. Indicates step number during
program control.
3PV indicator (red): Lights when the PV (Process variable)
is indicated.
4SV indicator (green) : Lights when SV (main set value) is indicated.
5AT indicator (yellow) : Flashes during AT (auto-tuning).
6T/R indicator (yellow): Flashes during Serial communication.
(Lit while sending data, Unlit while receiving data)
7OUT indicator (green):Lights when control output or OUT1 (Heating side, Heating/Cooling control
option) is ON. (For DC current output type, it flashes corresponding to the
manipulated variable in 0.25 second cycles)
8EV1 indicator (red) : Lights when Event output 1 or OUT2 (Cooling side, Heating/Cooling control
option) is ON.
9EV2 indicator (red) : Lights when Event output 2 is ON.
10 Increase key ( ) : Increases the numeric value.
11 Decrease key ( ) : Decreases the numeric value.
12 Mode key ( ) : Selects the setting mode or registers the set value.
(Bypressing the Mode key, the set value or selected value can be registered)
13 OUT/OFF key ( ) : The control output OUT/OFF or program control RUN/STOP can be switched.
1
2
3 4 5 6 7
8
9
10 11 12 13
1
2
1: Model number, supply
voltage, input type, output
type, etc. are entered
2: Lot number is entered.
(Example)
Supply voltage: 100 to 240V AC
Multi-input
Relay contact output
A1 output + A2 output
Heating/Cooling control is not added
Serial communication is not added
(Fig. 2-1)

6
3. Mounting to the control panel
3.1 Site selection
This instrument is intended to be used under the following environmental conditions
(IEC61010-1): Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:
•Aminimum of dust, and an absence of corrosive gases
•No flammable or explosive gases
•No mechanical vibrations or shocks
•No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 )
that does not change rapidly
•An ambient non-condensing humidity of 35 to 85%RH
•No large capacity electromagnetic switches or cables through which large current is flowing
•No water, oil or chemicals or where the vapors of these substances can come into contact
with the controller
3.2 External dimensions (Unit: mm)
(*): When terminal cover is added
(Fig. 3.2-1)
3.3 Panel cutout (Unit: mm)
(Fig. 3.3-1)
3.4 Mounting
Mount the controller vertically so that dust and water do not enter, fulfilling the Dust-proof/Drip-proof
specification (IP66).
Mountable panel thickness: 1 to 10mm
(1) Insert the controller from the front side of the panel. (Fig. 3.4-1)
(2) Insert the mounting frame until 2 tips of the frame touch the panel. (Fig. 3.4-2)
(3) Tighten screws with 3/4 rotations upon the screw tips touching the panel.
(Fig.3.4-1) (Fig.3.4-2)
47.6
36.5
44.8
47.5 (*)
21.6
23.8 (*)
24
48
10.6
98.5
101 (*)

7
4. Wiring
Warning
Turn the power supply to the instrument off before wiring.
Working on or touching the terminal with the power switched on may result in severe injury
or death due to Electric Shock.
•TC : Thermocouple input terminals
•RTD : RTD input terminals
•DC : DC current, DC voltage input terminals
For DC current input type, connect 50
shunt resistor (sold separately) between
input terminals.
•OUT1 : Control output or Heating output (Heating/
Cooling control option) terminals
•POWER SUPPLY: Power terminals
•EV1/OUT2: Event output 1 or Cooling output
(Heating/Cooling control option) terminals
•EV2 : Event output 2 terminals
•DI : DI (Digital input) terminals
Three DI functions: SV1/SV2 external
(Fig. 4-1) selection function, OUT/OFF (RUN/STOP)
external selection and Timer function
•RS-485: Serial communication terminals
Notice
•To extend a thermocouple’s lead wire, be sure to use a compensating lead wire in accordance with
the sensor input specification. (If any other compensating lead wire is used, a temperature indication
error may be caused.)
•Use the 3-wire RTD which corresponds to the input specification of this controller.
•This controller does not have a built-in power switch, circuit breaker or fuse. Therefore, it is
necessary to install them in the circuit near the external controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)
• When using a 24V DC for the power source, do not confuse polarity.
•When using a relay contact output type, externally use a relay according to the capacity of
the load to protect the built-in relay contact.
•When wiring, keep input wires (thermocouple, RTD, etc.) away from AC sources or load wires
to avoid external interference.
•Do not apply a commercial power source to the sensor connected to the input terminal nor
allow the power source to come into contact with the sensor.
Lead wire solderless terminal
Use a solderless terminal with an insulation sleeve in which an M3 screw fits as shown below.
The torque should be 0.63N•m.
Solderless
terminal Manufacturer Model Tightening torque
Nichifu Terminal Industries CO., LTD. TMEV1.25Y-3
Y type Japan Solderless Terminal MFG CO., LTD. VD1.25-B3A
Nichifu Terminal Industries CO., LTD. TMEV1.25-3
Round type Japan Solderless Terminal MFG CO., LTD. V1.25-3
0.63N•m
3.2mm
5.8mm or less
3.2mm
5.8mm or less
(Fig. 4-2)

8
5. Setup procedures
5.1 Setup procedures
The setup procedures of this controller is shown below. Refer to each item for details.
(1) Initial setting : Set the Input type, Alarm type, etc. during Auxiliary function setting mode 2.
(If the users’ specification is the same as the default value of the KT2, initial
setting is not necessary for the controller.)
(2) Main setting mode: Set Step SV and Step time for Program control during Main setting mode.
Refer to Chapter “6. Setup”.
(3) Sub setting mode : Set PID values, A1 value, etc during Sub setting mode.
(If the users’ PID values are the same as the default value of the KT2, it is not
necessary to set them.) Refer to Chapter “6. Setup”.
(4) Auxiliary function setting mode 1: Set the Lock function, Communication conditions, etc. during
Auxiliary function setting mode 1. (If the users’ specification is the same as
the default value of the KT2, it is not necessary to set them.)
Run Refer to Chapter “6. Setup”.
5.2 Initial setting
Before using this controller, it is necessary to set up the Input type,Alarm type, Control action, etc.
according to the users’ conditions. This is an initial setting.
Default values are set as follows.
Input: K –200 to 1370 ,Alarm 1(A1): No alarm action,Alarm 2(A2): No alarm action, Reverse (Heating) action
If the users’ specification is the same as the default value of the KT2, initial setting is not necessary.
Proceed to Section “6.1 Main setting mode”.
Turn the power supply to the instrument on.
For approx. 3 seconds after the power is turned on, the MEMO/STEP display is turned off and the PV/SV
display indicates sensor input characters and temperature unit. (Table 5.2-1)
During this time, all outputs and LED indicators are in an OFF status.
(Table 5.2-1)
After that, the following is indicated.
The MEMO/STEP display indicates a memory number. The PV/SV display indicates an
input value (e.g. room temperature). This is the PV/SV display mode.
Basic operation for initial setting
Initial setting is conducted in Auxiliary function setting mode 2. To go toAuxiliary function setting mode 2,
press the key for approx. 3 seconds while holding down the key in the PV/SV display mode.
Setor select the values with the or key.
Pressing the key registers the values andgoes to the next item.
PV/SV display
Sensor input
K
J
R
S
B
E
T
N
PL-
C (W/Re5-26)
Pt100
JPt100
4 to 20mA DC
0 to 20mA DC
0 to 1V DC
0 to 5V DC
1 to 5V DC
0 to 10V DC

9
Display used for explaining setting items
Setting items (Section “5.2 Initial setting” and setting modes from Section 6.1 to 6.3) are explained as follows.
(e.g.) Input type selection means that input type characters and selected
value (K –200 to 1370 ) are indicated in turn.
Auxiliary function setting mode 2
Display Item, Function, Setting range Default value
Input type selection K(-200 to 1370 )
• The input type can be selected from thermocouple (10 types),
RTD (2 types), DC current (2 types) and DC voltage (4 types).
The unit / can be selected as well.
•When changing the input from DC voltage to other inputs,
remove the sensor connected to this controller first, then
change input type. If the input is changed with the
sensor connected, the input circuit may break.
:
:
:
:
:
:
:
:
:
:
:
K
J
R
S
B
E
T
N
PL-
C (W/Re5-26)
-200 to 1370
-199.9 to 400.0
-200 to 1000
0 to 1760
0 to 1760
0 to 1820
-200 to 800
-199.9 to 400.0
-200 to 1300
0 to 1390
0 to 2315
:
:
::
Pt100
JPt100
Pt100
JPt100
-199.9 to 850.0
-199.9 to 500.0
-200 to 850
-200 to 500
:
:
:
:
:
:
:
:
:
:
:
K
J
R
S
B
E
T
N
PL-
C (W/Re5-26)
-320 to 2500
-199.9 to 750.0
-320 to 1800
0 to 3200
0 to 3200
0 to 3300
-320 to 1500
-199.9 to 750.0
-320 to 2300
0 to 2500
0 to 4200
:
:
::
Pt100
JPt100
Pt100
JPt100
-199.9 to 999.9
-199.9 to 900.0
-300 to 1500
-300 to 900
:
:
:
:
:
:
4 to 20mA DC
0 to 20mA DC
0 to 1V DC
0 to 5V DC
1 to 5V DC
0 to 10V DC
-1999 to 9999
-1999 to 9999
-1999 to 9999
-1999 to 9999
-1999 to 9999
-1999 to 9999
Scaling high limit setting 1370
• Sets scaling high limit value.
• Setting range: Scaling low limit value to input range high
limit value
Scaling low limit setting -200
• Sets scaling low limit value.
• Setting range: Input range low limit value to scaling high limit
value

10
Decimal point place selection No decimal point
• Selects decimal point place.
• Available only for DC input
• : No decimal point
: 1 digit after decimal point
: 2 digits after decimal point
: 3 digits after decimal point
PV filter time constant setting 0.0 seconds
• Sets PV filter time constant.
Input fluctuation due to the noise can be reduced.
If the value is set too large, it affects control result due to the
delay of response.
• Setting range: 0.0 to 10.0 seconds
OUT1 (Heating) high limit setting 100%
• Sets OUT1 (Heating) high limit value.
Not available if OUT1 (Heating) is ON/OFF action
• If Heating/Cooling control option is added, OUT1 terminals are
used for Heating output terminals.
• Setting range: OUT1 (Heating) low limit value to 105%
(Setting higher than 100% is effective to DC current output type)
OUT1 (Heating) low limit setting 0%
• Sets OUT1 (Heating) low limit value.
Not available if OUT1 (Heating) is ON/OFF action
• If Heating/Cooling control option is added, OUT1 terminals are
used for Heating output terminals.
• Setting range: –5% to OUT1 (Heating) high limit value
(Setting less than 0% is effective to DC current output type)
OUT1 (Heating) ON/OFF action hysteresis setting 1.0
• Sets ON/OFF action hysteresis for OUT1 (Heating).
• Available only when OUT1 (Heating) is ON/OFF action
• Setting range: 0.1 to 100.0 ( ), or 1 to 1000
EV1 output selection A1 output
• Selects a function for EV1 output terminals.
• Not available if Heating/Cooling control option is added, since
EV1 terminals are used for Cooling output terminals.
• :A1 output
:A2 output
: Common to A1 and A2 output
EV2 output selection A2 output
• Selects a function for EV2 output terminals.
• Not available if Serial communication option is added
• :A1 output
:A2 output
: Common to A1 and A2 output
Overlap band/Dead band setting 0.0
• Sets the overlap band or dead band for OUT1 (Heating side) and
OUT2 (Cooling side).
+ set value: Dead band
– set value: Overlap band
• Available only when the Heating/Cooling control option is added
• Setting range: –100.0 to 100.0 ( ), or 1 to 1000
OUT2 (Cooling) ON/OFF action hysteresis setting 1.0
• Sets ON/OFF action hysteresis for OUT2 (Cooling side).
• Available only when the Heating/Cooling control option is added
• Setting range: 0.1 to 100.0 ( ), or 1 to 1000

11
A1 type selection No alarm action
• Selects an A1 (Alarm 1) type.
• : No alarm action
:High limit alarm
:Low limit alarm
:High/Low limits alarm
:High/Low limit range alarm
:Process high alarm
:Process low alarm
:High limit alarm with standby
:Low limit alarm with standby
:High/Low limits alarm with standby
: Timer function
: Pattern end output
If Timer function is selected, Timer function works only
when Delay action type, Delay time and DI (digital input)
function are set or selected.
A2 type selection No alarm action
• Selects an A2 (Alarm 2) type.
• Alarm type selection and default value are the same as those of
A1 type selection.
A1 hysteresis setting 1.0
• Sets hysteresis forA1.
• Not available if No alarm action, Timer function or Pattern end
output is selected duringA1 type selection
• Setting range: 0.1 to 100.0 ( ), or 1 to 1000
A2 hysteresis setting 1.0
• Sets hysteresis forA2.
• Not available if No alarm action, Timer function or Pattern end
output is selected duringA2 type selection
• Setting range: 0.1 to 100.0 ( ), or 1 to 1000
A1 action delayed timer setting 0 seconds
• Sets action delayed timer forA1.
When setting time has elapsed after the input enters the alarm
output range, the alarm is activated.
• Not available if No alarm action, Timer function or Pattern end
output is selected during A1 type selection
• Setting range: 0 to 9999 seconds
A2 action delayed timer setting 0 seconds
• Sets action delayed timer forA2.
When setting time has elapsed after the input enters the alarm
output range, the alarm is activated.
• Not available if No alarm action, Timer function or Pattern end
output is selected duringA2 type selection
• Setting range: 0 to 9999 seconds
Alarm HOLD function selection Alarm Not Holding
• Selects whether alarm HOLD function for A1 or A2 is used or
not used.
• This setting item is common to A1 and A2.
Not available if No alarm action, Timer function or Pattern end
output is selected duringA1 or A2 type selection.
• :Alarm Not Holding
:Alarm Holding

12
Delay action type selection ON delay
• Selects a delay action type for Timer function.
• Available only when Timer function is selected duringA1 or A2
type selection.
• : ON delay
: OFF delay
: ON/OFF delay
(Fig. 5.6-1)
Delay time setting 0 seconds
• Sets delay time for the Timer function.
• Available only when Timer function is selected during A1 or A2
type selection.
• Setting range: 0 to 9999 seconds
Direct/Reverse control action selection Reverse (Heating)
• Selects Reverse (Heating) or Direct (Cooling) control action.
・: Reverse (Heating) action
: Direct (Cooling) action
AT bias setting 20
• Sets bias value when performing auto-tuning.
See page 22 for PID auto-tuning.
• Not available for DC input
• Setting range: 0 to 50 (0 to 100 ) or 0.0 to 50.0 (0.0 to100.0 )
Setting item not used
This item is indicated when Serial communication option is added.
However, this cannot be used.
OUT/OFF key function selection Control output
OUT/OFF function
• Selects whether OUT/OFF key is used for control output
OUT/OFF function (Fixed value control) or for program control
RUN/STOP function.
• : Control output OUT/OFF function (Fixed value control)
: Program control RUN/STOP function
Step time unit selection Hour:Minute
• Selects Step time unit for the program control function.
• Not available if control output OUT/OFF function (Fixed value
control) is selected during [OUT/OFF key function selection].
• : Hour:Minute
: Minute:Second
DI
(Digital
input)
ON
OFF
ON
OFF
ON
OFF
ON delay
OFF delay
ON/OFF
delay
DLY
DLY
DLY
DLY
DLY: Delay time setting
(Contact Open)
(Contact Closed)
ON
OFF

13
DI (Digital input) function
selection SV1/SV2 external selection function
• Selects DI function whether it is used as SV1/SV2 external
selection function, OUT/OFF (RUN/STOP) external selection
function or Timer function.
If SV1/SV2 external selection function is selected;
SV1 or SV2 can be switched by external contact.
However, this function is not available if Program control
function is selected during OUT/OFF key function selection.
Between DI terminals Open: SV1
Between DI terminals Closed: SV2
If OUT/OFF(RUN/STOP) external selection function is selected;
Control output OUT/OFF (Fixed value control) or Program
control RUN/STOP can be switched by external contact.
Fixed value control
Between DI terminals Open: OUT (Control allowed)
Between DI terminals Closed: OFF (Control prohibited,
control output OFF)
Program control
Program control RUN/STOP can be switched if the following
operation is conducted during program control standby.
Between DI terminals from Open to Closed: RUN (program
control run)
Between DI terminals from Closed to Open: STOP (program
control stop)
If DI terminal contact is changed from Closed to Open while
pattern end output is turned on after program control ended,
pattern end output is turned off.
If Timer function is selected;
Timer counting starts by the external contact, and after the set
delay time has passed, the selected event output is turned on.
• Not available if Serial communication option is applied.
• : SV1/SV2 external selection function
: OUT/OFF(RUN/STOP) external selection function
: Timer function
Output status selection when input abnormal Output OFF
• Selects the output status of OUT1 and EV1/OUT2 when DC input
is overscale or underscale. See “Input abnormality indication” (p.28).
• Available only for DC current output type with DC input
• : OUT1 outputs OFF(4mA) or OUT1(Heating) low limit value.
EV1/OUT2: OFF
: OUT1 outputs a value between OFF(4mA) and ON(20mA),
or outputs a value between OUT1(Heating) low limit value
and OUT1 (Heating) high limit value.
EV1/OUT2: ON
Controller/Converter function selection Controller
• Selects whether to use the KT2 as a controller or a converter.
If the KT2 is switched from a converter to a controller, control
parameters which were automatically set when converter
function was selected are maintained as they were. Therefore
correct the values when using the KT2 as a controller.
• Available only for DC current output type
• : Controller
: Converter
Standby mode
DI ON
ContactClosed Contact Open
Standby mode
DI OFF
ContactOpen
Program control STOP
Programcontrolis performed
whenthe contactischanged
fromOpentoClosed.
Programcontrolstopswhen
thecontact is changedfrom
ClosedtoOpen.
Controller
status
Contact Open
Stops program control.
Program control RUN
Contact Closed
Performsprogramcontrol.

14
6. Setup
6.1 Main setting mode
To go to the main setting mode, press the key in the PV/SV display mode.
Set each setting item with the or key, and register the value with the key.
In the main setting mode, indicated setting items are different depending on the instrument status.
• Fixed value control
Setting items SV1 and SV2 will be indicated.
• Program control
Step SV and step time from Step 1 to Step 9 will be indicated.
This program pattern shows that the
temperature rises to 200 for 1 hour
and stays at 200 for 2 hours.
In this case,
Step 1 SV: 200
Step 1 time (1 hour): 01:00
Step 2 SV: 200
Step 2 time (2 hours): 02:00
Display Item, Function, Setting range Default value
SV1 (step 1 SV) setting 0
• Sets SV1 or step 1 SV.
• Scaling low limit value to Scaling high limit value
Step 1 time setting 00:00
• Sets step 1 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
SV2 (step 2 SV) setting 0
• Sets SV2 or step 2 SV.
• Available when SV1/SV2 external selection function is
selected during DI (digital input) function selection or when
program control function is selected during OUT/OFF key
function selection.
• Scaling low limit value to Scaling high limit value
Step 2 time setting 00:00
• Sets step 2 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
Step 3 SV setting 0
• Sets step 3 SV.
• Available only when program control function is selected during
OUT/OFF key function selection
• Scaling low limit value to Scaling high limit value
Step 3 time setting 00:00
• Sets step 3 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
Step 4 SV setting 0
• Sets step 4 SV.
• Available only when program control function is selected during
OUT/OFF key function selection
• Scaling low limit value to Scaling high limit value
Step number 1 2
200
0
1:00 2:00
C
C
Program control run
(Fig.6.1-1)

15
Step 4 time setting 00:00
• Sets step 4 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
Step 5 SV setting 0
• Sets step 5 SV.
• Available only when program control function is selected during
OUT/OFF key function selection
• Scaling low limit value to Scaling high limit value
Step 5 time setting 00:00
• Sets step 5 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
Step 6 SV setting 0
• Sets step 6 SV.
• Available only when program control function is selected during
OUT/OFF key function selection
• Scaling low limit value to Scaling high limit value
Step 6 time setting 00:00
• Sets step 6 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
Step 7 SV setting 0
• Sets step 7 SV.
• Available only when program control function is selected during
OUT/OFF key function selection
• Scaling low limit value to Scaling high limit value
Step 7 time setting 00:00
• Sets step 7 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
Step 8 SV setting 0
• Sets step 8 SV.
• Available only when program control function is selected during
OUT/OFF key function selection
• Scaling low limit value to Scaling high limit value
Step 8 time setting 00:00
• Sets step 8 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59
Step 9 SV setting 0
• Sets step 9 SV.
• Available only when program control function is selected during
OUT/OFF key function selection
• Scaling low limit value to Scaling high limit value
Step 9 time setting 00:00
• Sets step 9 time.
• Available only when program control function is selected during
OUT/OFF key function selection
• Setting range: 00:00 to 99:59

16
6.2 Sub setting mode
To go to the Sub setting mode, press the key while holdingdown the key in the PV/SV display mode.
Set each setting item with the or key, and register the value with the key.
Display Item, Function, Setting range Default value
AT (Auto-tuning) selection AT Cancel
• Selects auto-tuning Perform/Cancel.
Not available for program control standby status and for
control actions other than PID action.
•:AT Cancel :AT Perform
OUT1 (Heating) proportional band setting 2.5%
• Sets the proportional band for OUT1 (Heating side).
• ON/OFF action when set to 0.0.
• Setting range: 0.0 to 110.0% [Percentage of the scaling span
(scaling high limit-scaling low limit)]
OUT2 (Cooling) proportional band setting 1.0 times
• Sets the proportional band for OUT2 (cooling side).
• ON/OFF action when set to 0.0.
• Not available if Heating/Cooling control option is not added or
if OUT1 (Heating side) is ON/OFF action
• Setting range: 0.0 to 10.0 times OUT1 (Heating) proportional band
OUT1 (Heating) integral time setting 200 seconds
• Sets the integral time.
• Setting the value to 0 disables the function. (PD action)
• Not available if OUT1 (Heating) is ON/OFF action
• Setting range: 0 to 1000 seconds
OUT1 (Heating) derivative time setting 50 seconds
• Sets the derivative time.
• Setting the value to 0 disables the function. (PI action)
• Not available if OUT1 (Heating) is ON/OFF action
• Setting range: 0 to 300 seconds
ARW setting 50%
• Sets the ARW (anti-reset windup).
• Available only for PID action.
• Setting range: 0 to 100%
OUT1 (Heating) proportional cycle setting
• Sets OUT1 (Heating) proportional cycle.
• Sets the proportional cycle.
• Not available for DC current output type or
if OUT1 (Heating) is ON/OFF action.
Relaycontact:30sec
Non-contact
voltage: 3sec
DC current: Not
available
• Setting range: 1 to 120 seconds
OUT2 (Cooling) proportional cycle setting 30 seconds
• Sets OUT2 (Cooling) proportional cycle.
• Not available if Heating/Cooling control option is not added or
if cooling output is ON/OFF action.
• Setting range: 1 to 120 seconds
Manual reset setting 0.0
• Sets reset value manually.
• Available only for P or PD action.
• Proportional band converted value (For DC input, the
placement of the decimal point follows the selection.)
A1 value setting 0
• Sets A1 action point. Setting the value to 0 or 0.0 disables the
function (except process high alarm and process low alarm).
• Not available if No alarm action, Timer function or Pattern end
output is selected duringA1 type selection
• Setting range: See (Table 6.2-1).
A2 value setting 0
• Sets A2 action point. Setting the value to 0 or 0.0 disables the
function (except process high alarm and process low alarm).
• Not available if No alarm action, Timer function or Pattern end
output is selected duringA2 type selection
• Setting range: See (Table 6.2-1).

17
(Table 6.2-1) Alarm type Setting range
High limit alarm -(Scaling span) to Scaling span
Low limit alarm -(Scaling span) to Scaling span
High/Low limits alarm 0 to Scaling span
High/Low limit range alarm 0 to Scaling span
Process high alarm Scaling low limit to Scaling high limit value
Process low alarm Scaling low limit to Scaling high limit value
High limit alarm with standby - (Scaling span) to Scaling span
Low limit alarm with standby - (Scaling span) to Scaling span
High/Low limits alarm w/standby 0 to Scaling span
6.3 Auxiliary function setting mode 1
To go to Auxiliary function setting mode 1, press the key for approx. 3 seconds while holding down
the key in the PV/SV display mode.
Set each setting item with the or key, and register the value with the key.
Display Item, Function, Setting range Default value
PV/SV indication selection PV indication
• PV indication ( ) or SV indication ( ) can be selected.
PV indication with key, SV indication with the key
• During input burnout, the PV/SV display flashes " " or
" " even if SV is indicated on the display.
Set value lock selection Unlock
• Locks the set values to prevent setting errors.
The setting item to be locked depends on the selection.
• When Lock 1 or Lock 2 is selected, PID Auto- tuning cannot be
carried out.
• Because there islimitednon-volatile memory,besure to selectLock 3
when thesetvalueischangedfrequentlyvia communicationfunction.
• (Unlock): All set values can be changed.
(Lock 1): None of the set values can be changed.
(Lock 2): SV1 and SV2 can be changed during fixed
value control. Step SV and step time can be changed during
program control. Other setting items cannot be changed.
(Lock 3): All set values except input type and Controller/
Converter function can be changed. However, changed
values revert to their previous value after the power is turned
off becausetheyare notsavedin thenon-volatilememory.
(If the value set by the communication function is the same as
the value before the setting, the value will not be written in the
non-volatile memory.) Do not change any setting item in
Auxiliary function setting mode 2. If any item in the mode
is changed, it will affect other
setting items such as the
SV and Alarm value.
Sensor correction setting 0.0
• Sets the correction value for the sensor.
PV aftersensor correction =Current PV + (Sensor correction value)
• Setting range: –100.0 to 100.0 ( ) DC input: –1000 to 1000
Communication protocol selection Modbus ASCII
• Selects the communication protocol.
• Available only when the Serial communication option is applied.
• : Unavailable
: Modbus ASCII mode : Modbus RTU mode
Instrument number setting 0
• Sets the instrument number individually to each instrument when
communicating by connecting plural instruments in Serial
communication.
• Available only when Serial communication option is added.
•Setting range: 0 to 95 (However, number of connectable units: Max. 31 units)
Communication speed selection 9600bps
• Selects a communication speed to be equal to the speed of the
host computer.
• Available only when Serial communication option is added.
• : 2400bps : 4800bps
: 9600bps : 19200bps
For the inputs
with a
decimal point, the
negative low limit
value is -199.9, and
the positive high limit
value is 999.9.
All alarm actions
except for the
Process alarm are a
deviation setting
from the SV (main set
value).

18
7. Running
7.1 Start running.
After the controller is mounted to the control panel and wiring is completed, operate the unit following the
procedures below.
(1) Turn the power supply to the KT2 ON.
For approx. 3sec after the power is switched ON, the sensor input characters and the temperature unit
are indicated on the PV/SV display. See (Table 5.2-1) on page 8.
During this time, all outputs and LED indicators are in an OFF status.
After that, control starts, indicating the following, depending on the controller status.
•Fixed value control status
Control starts, indicating memory number on the MEMO/STEP display and PV (process variable) or SV
(main set value) on the PV/SV display. (If PV indication is selected during PV/SV indication selection,
PV is indicated. If SV indication is selected during PV/SV indication selection, SV is indicated.)
•Program control standby status
The MEMO/STEP display is turned off, and the PV/SV display indicates input value or " ".
(If PV indication is selected during PV/SV indication selection, PV is indicated. If SV indication
is selected during PV/SV indication selection, " " is indicated.)
•Program control run status
The MEMO/STEP display indicates step number, and the PV/SV display indicates input value or current
step temperature. (If PV indication is selected during PV/SV indication selection, PV is indicated.
If SV indication is selected during PV/SV indication selection, current step temperature is indicated.)
•When control output OFF function is working;
The MEMO/STEP display is turned off, and the PV/SV display indicates " ".
(2) Input each set value.
Input each set value, referring to “6. Setup”.
(3) Turn the load circuit power ON.
The controller starts as follows depending on the setting.
•Fixed value control
Control starts so as to keep the control target at the SV.
•Program control
Program control run
To perform program control run, press the key.At this time the program control starts with PV start.
PV start: When the program control starts, SV and step time are advanced to the PV, then the
program control is performed.
(e.g.) PV is assumed to be 100 inthe program pattern of Section “6.1 Mainsetting mode”.
If the program control is performed, the step SV advances from 0 to 100 , and the step
time also advances from 1:00 to 0:30.
Program control stop
To stop program control, press the key for approx. 1 second. The program control stops, and
the controller reverts to the program control standby mode.
Action after power is restored
If power failure occurs during the program control run, the control resumes from the point at which
power failure occurred.
If power failure occurs during program control standby mode, the control resumes from the program
control standby mode.
Progressing time error after power is restored: Within 1 minute regardless of step time unit
•Converter
In the case of DC current output type, each input value (thermocouple, RTD, DC current, DC voltage)
is converted to 4 to 20mA DC and outputted.
Input/output response is approx. 1 second.
When using an alarm action, select Process alarm duringA1, A2 type selection.

19
7.2 MV (Control output manipulated variable) indication
To indicate MV, hold down the key for approx. 3 seconds in the PV/SV display mode.
Keep pressing the key until MV appears, though SV1 (step 1 SV) setting item appears during
the process.
PV/SV display mode
Hold down the key for approx. 3 seconds.
Keep pressing the key until MV appears, though SV1 (step 1 SV)
setting item appears during the process.
(For approx.3sec)
MV (Control output manipulated variable) indication
The MEMO/STEP display indicates a memory number during fixed
value control and a step number during program control.
The PV/SV display indicates MV.
Flashes While MV is being indicated, the 1stdecimal point from the right flashes
in 0.5 second cycles.
To release MV indication function, press the key again or turn the
power supply to the KT2 OFF, then ON.
7.3 Control output OFF function
This is a function to pause the control action or to turn the control output of the unused instrument of the
plural units OFF even if the power to the instrument is supplied.
To turn the control output OFF, press the key for approx. 1 second in the PV/SV display mode.
PV/SV display mode
Press the key for approx. 1 second.
(For approx. 1sec) Control output OFF
The MEMO/STEP display is switched off and the PV/SV display
indicates . Once the control output OFF function is enabled,
(For approx.1sec) the function cannot be released even if the power to the instrument
is turned OFF and ON again.
To cancel the function, press the key again for approx. 1 second.
7.4 Auto-tuning (AT) Perform/Cancel
Auto-tuning Perform/Cancel can be selected duringAT selection in the Sub setting mode.
PV/SV display mode
Press the key while holding down the key.
+AT selection in the Sub setting mode
Select Auto-tuning Perform ( ) with the key
and Auto-tuning Cancel ( ) with the key, then
press the key.
The AT indicator flashes while performing auto-tuning.
If Auto-tuning is cancelled during the process, P, I, D, ARW
values return to the previous values.
If PID auto-tuning does not finish in 4 hours after starting,
PID auto-tuning is cancelled automatically.

20
Each time
the key
is pressed,
the setting
item is
switched.
8. Operation flowchart
PV/SV display mode
(Fixed value control)
(In the case of Program control standby)
PV indication: The MEMO/STEP display is
unlit. Only PV is indicated.
SV indication: is indicated.
PV/SV indication
PV/SV or
• Select PV or SV with the ,
keys.
AT
PV/SV , Selection
• If AT is cancelled during the process,
PID values return to previous values.
OUT2 (Cooling)
proportional band
PV/SV , Set value
• Set the value with the , keys.
• Not available when OUT1 is ON/OFF
action
OUT1 (Heating)
integral time
PV/SV , Set value
• Set the value with the , keys.
• Setting the value to 0 disables the
function.
OUT1 (Heating)
proportional band
PV/SV , Set value
• Set the value with the , keys.
• ON/OFF action when set to 0.0
OUT1 (Heating)
derivative time
PV/SV , Set value
• Set the value with the , keys.
• Setting the value to 0 disables the
function.
OUT1 (Heating)
proportional cycle
PV/SV , Set value
• Set the value with the , keys.
• Not available for DC current output
type or if OUT1 is ON/OFF action.
OUT2 (Cooling)
proportional cycle
PV/SV , Set value
• Set the value with the , keys.
• Not available if OUT2 is ON/OFF
action.
ARW
PV/SV , Set value
• Set the value with the , keys.
• Available only for PID action
A2 value
PV/SV , Set value
• Set the value with the , keys.
• Not available if ，or
is selected during A2 type
selection.
A1 value
PV/SV , Set value
• Set the value with the , keys.
• Not available if ，or
is selected during A1 type
selection.
Reverts to the PV/SV display.
SV1
(Step 1 SV)
MEMO/STEP
PV/SV , SV1
Reverts to the
PV/SV display.
Alarm 1 (A1) setting procedures
(Numbers (1) to (5) are indicated on the flowchart.)
(1) Select an alarm type during [A1 type selection].
[If ，or is selected, (2) to (5)
are not indicated.]
(2) Set A1 hysteresis during [A1 hysteresis setting].
(3) Set A1 action delayed timer during [A1 action delayed
timer].
(If input enters alarm action range and setting time has
elapsed, the alarm is activated.)
(4) Select if the alarm output is held or not during [Alarm
HOLD function selection] (common to A1, A2).
(5) Set A1 action point during [A1 value setting].
[Note] If an alarm type is changed, the alarm value
becomes 0 (0.0). Therefore it is necessary to
reset it.
Set value lock
PV/SV ,
Selection
• Make a selection with the ,
keys.
• If Lock 1 or Lock 2 is selected, AT
does not work.
• Be sure to select Lock 3 when
using Serial communication.
Sensor correction
PV/SV , Set value
• Set the value with the ,
keys.
Communication protocol
PV/SV , Selection
• Make a selection with the ,
keys.
Instrument number
PV/SV , Set value
• Set the value with the ,
keys.
Communication speed
PV/SV , Selection
• Make a selection with the ,
keys.
Reverts to the PV/SV display.
[Sub setting mode]
[A
uxiliary function setting mode 1]
[Main setting mode]
Step 1 time
MEMO/STEP
PV/SV , Set value
SV2
(Step 2 SV)
MEMO/STEP
PV/SV , SV2
Step 2 time
MEMO/STEP
PV/SV , Set value
Step 3 SV
MEMO/STEP
PV/SV , Step 3 SV
Step 3 time
MEMO/STEP
PV/SV , Set value
Step 9 time
MEMO/STEP
PV/SV , Set value
Set SV
and time
for the
necessary
step.
Explanation of key
• : This means that if the key is pressed, the set
value is saved, and the controller proceeds to the
next setting item.
• If the key is pressed for approx. 3sec, the controller
reverts to the PV/SV display mode from any mode.
(5)
Character indication
• Characters and set (selected) value of the setting item are
indicated on the PV/SV display alternately.
• Setting items with dotted lines are optional and they appear
only when the options are added.
Manual reset
PV/SV , Set value
• Set the value with the , keys.
• Available only for P and PD action.
Step 9 SV
MEMO/STEP
PV/SV , Step 9 SV
Press the key.
Press the key.
Automatically
returns 2sec later.
PV indication when SV is
selected, and vice versa Control output OFF
(Fixed value control)
MV indication
Flashes
Program control RUN
(Program control)
Press the key. Press the key while holding down the key. Press the while holding down the for 3sec.
Press the key.
Press the key
for 3 seconds.
Press the key
for 1 second.
Press the key
for 1 second.