Panasonic KT4H, KT4B User guide

Communication Installation Instructions KT4H/B TemperatureController

Negative

[17]

[19]

[20]

[21]

[22]

[23]

[24]

Shielded

Shie

lded

Shielded

These instructions are for communication functions. For detailed operating instructions, please refer to User’s Manual for the KT4H/B.

Serial communication and Toolport communication cannot be used together. When performing Serial communication, remove the tool cable (AKT4H820) from the USB port of the PC and tool connector of the KT4H/B. When performing Tool port communication,it is not required to remove the Serial communication cables. However,do not send a command from the master side.

No. KT4HCE4 2009.11

5. System configuration

Communicationconverter

RS-232C RS-485

No. 1 No. 2 No. 31

Host computer

(Fig. 1-1)

KT4H or KT4B

2. Wiring

Wiring example using a communication converter

Using a D-sub 9-pin Connector

Host computer

wire

D-sub 9-pin connector

Using a D-sub 25-pin Connector

Hostcomputer

wire

D-sub 25-pin connector

When connecting to a PLC (RS-485)

PLC

Shieldedwire

Connectonlyone sideoftheshieldedwire to the FG terminalsothatcurrentcannot flowto the shielded wire.If both sidesofthe shielded wire are connected to the FG terminal, the circuit will be closedbetween the shielded wire and the ground. As a result, current will run through the shielded wire and this may cause noise.Be sure togroundthe FG terminal.

Terminator(Terminal resistor)

Do not connect terminator with the communicationline because each KT4H/B has built-inpull-upandpull-downresistorsinsteadof aterminator. If there is a large distance between the PLC and the KT4H/B, connect the terminator on the PLC side.(Connecta terminatorof120 ormoreresistance.)

(Fig. 2-1)

(Fig. 2-2)

(Fig. 2-3)

wire

Shielded wire

KT4H or KT4B

3. Communication parameter setting

Set each communication parameter following the procedures below.

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

Numbers such as [17], [19], etc. are setting item numbers. Refer to the User’s Manual for the KT4H/B.

(Twice)

Proceed to Auxiliary function setting mode.

Press key while pressing key in the PV/SV display mode. The unit proceeds to Auxiliary function setting mode.

Auxiliary function setting mode

Press key twice. The unit proceeds to Communication protocol selection.

Communication protocol selection

Select the communication protocol.

Instrument number setting

Set the instrument number of the controller individually when communicating by connecting plural instruments.

Communication speed selection

Set the communication speed equal to that of the host computer.

Data bit/Parity selection

Select the data bit and parity.

Stop bit selection

Select the stop bit.

Communication response time setting

Set the minimum response time. 5 to 99 (Default: 5ms)

: Modbus ASCII mode (Default) : Modbus RTU mode : MEWTOCOL (Slave)

1 to 99 (Default: 1)

: 2400bps : 4800bps : 9600bps (Default) : 19200bps

: 8 bits/No parity : 7 bits/No parity : 8 bits/Even : 7 bits/Even (Default) : 8 bits/Odd : 7 bits/Odd

: 1 (Default) : 2

4. Communication procedures

Communication starts with command transmission from the host computer (Master) and ends with the response of the KT4H/B (Slave).

Master Slave

Command

Data

Command

Acknowledgement

Command

Acknowledgement

Command

Noresponse

(Fig.4-1)

RS-485 communication timing

Master side (Notice on programming)

Set the program so that the master can disconnect the transmitter from the communication line within a 1 character transmissionperiod after sending the command in preparation for reception of the response from the slave. To avoid the collision of transmissions between the master and the slave, send thenextcommand aftercarefullychecking thatthemasterreceivedthe response.

Slave side

When the slave starts transmission through the communication line, the slave is arranged so as to provide an idle status(mark status)transmission period of 5ms or more (communication response time from 5 to 99ms settable) before sending the response to ensure the synchronization on the receiving side. Theslaveis arrangedso as todisconnect the transmitterfrom thecommunication line within a 1 character transmission period after sending the response.

• Response with data When the master sends the reading command, the slave responds with the corresponding set value or current status.

• Acknowledgement When the master sends the setting command, the slave responds by sending the acknowledgement after the processing is terminated.

• Negative acknowledgement When the master sends non-existent command or value out of the setting range, the slave returns the negative acknowledgement.

• No response Theslavewillnotrespondtothemasterinthefollowing cases.

• Global address “FF” (MEWTOCOL) is set.

• Broadcast address (Modbus protocol) is set.

• Communication error (framing error,parity error)

• LRC discrepancy (Modbus ASCII mode)

• CRC-16 discrepancy (Modbus RTU mode)

5. Specifications

Communicationsystem: Half duplex Cable length : 1,000m (Max.), cable resistance 50 or less

Communicationline :EIARS-485 Communicationspeed : 9600bps(2400,4800,9600,19200bps) Selectablebykey Synchronoussystem :Start-stopsynchronous Code :ASCII(ModbusASCII,MEWTOCOL),Binary(ModbusRTU) Errorcorrection :Commandrequestrepeatsystem

PleasedownloadUser’sManualathttp://panasonic-denko.co.jp/ac/e/ ForthedetailedusageandUser’sManual,pleasecontactusat theaddressbelow.

Panasonic E lectric Works Co., Ltd. Automation Controls Business U nit

HeadOffice:1048Kadoma,Kadoma-shi,Osaka571-8686,Japan Panasonic Electric Works Europe AG Telephone: Japan (81) Osaka (06) 6908-1050 Rudolf-Diesel-Ring 2 83607 Holzkirchen, Germany Facsimile : Japan (81) Osaka (06) 6908-5781 Thisproducthasbeendeveloped/producedfor industrialuseonly.

(Terminator: None or 120 or more on PLC side)

AboutUser’sManual

Pursuant to the directive 2004/108/EC, article 9(2)

EVT1

: Alarm 1 output

Basic operation

InstallationInstructions KT4H/B TemperatureController

contact with the controller

Forapprox.3secondsafterthepoweristurnedon,thePVdisplayindicatesthe

indicates input range high limit value (TC, RTD

Action indicators

Tool connector

(Fig. 3-4

)

Thismeansthatif MODEkeyispressed,

(Fig. 3-1)

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

[17]

[18][19]

[20]

[21]

[22]

[23]

[24]

[25]

[26]

[27]

[28]

[29]

[30]

[31]

[32]

[33]

[34]

[35]

[36]

[37]

[38]

[39]

[40]

[41]

[42]

[43]

[44]

[45]

[46]

[47]

[48]

[49]

[50]

[51]

[52]

[53]

[54]

[55]

[56]

Press keyforapprox.3sec.

Rubber gasket

Model

To ensure safeand correctuse,thoroughlyreadandunderstandthese instructionsbeforeusing thisinstrument.Fordetailedusageandoptions,pleaserefertoUser’sManualfortheKT4H/B.

SAFETY PRECAUTIONS

(Besuretofollowtheprecautionsdescribedbelowtopreventinjuryoraccidents.)

Thesafetyprecautionsareclassifiedintocategories:“Warning”and“Caution”.

Warning:Procedures whichmayleadto dangerousconditionsand causedeathor

seriousinjury,if notcarriedoutproperly.

Caution:Procedureswhichmayleadtodangerousconditionsandcausesuperficial

to medium injury or physical damage or may degrade or damage the product,ifnotcarriedoutproperly.

• When using this controller on occasions which serious injury would be expected to occur or when damage is likely to expand or proliferate, make sure to take safety measuressuchasinstallingdoublesafetystructures.

• Do not use this controllerin an environment with flammable gases, or it may cause explosion.

Warning

No. KT4HE5 2009.07

Caution

•Fasten the electric wire withthe terminalscrews securely. Imperfectconnectionmay causeabnormalheatingorfumes.

• Use this controller according to the rating and environmental conditions. Otherwise abnormalheatingorfumesmay occur.

• Do not touch the terminals while the power is supplied to the controller, as thismay causeelectricshock.

•Do notdisassembleor modifythecontroller, asthismaycauseelectricshockorfumes.

Caution

• This instrument should be used in accordance with the specifications described in these instructions.Ifitisnotusedaccordingtothespecifications,itmaymalfunctionorcausefire.

•Be suretofollowthewarnings,cautionsandnotices.Notdoingsocouldcauseserious injuryoraccidents.

•Thecontents ofthisbookletaresubjectto changewithout notice.

• This instrumentisdesignedto beinstalledina controlpanel.Ifnot,measuresmustbe taken to ensure that the operator cannot touch powerterminals or other highvoltage

sections.

•Be suretoturnthepowersupplyto theinstrumentOFFbeforecleaningthisinstrument.

•Use asoft,dryclothwhencleaningtheinstrument.

(Alcoholbasedsubstancesmaytarnishor defacetheunit.)

•Asthedisplaysectionisvulnerable, donotstrikeor scratchit witha hardobject.

•Anyunauthorizedtransferor copyingof thisdocument,inpartorin whole,isprohibited.

• Matsushita Electric Works, Ltd. is not liable for anydamages or secondary damages

incurredasa resultof usingthisproduct,includinganyindirect damages.

2.2 External dimensions (Unit: mm) Common to KT4H/B

2.3 Panel cutout (Unit: mm)

(Fig. 2.3-1)

2.4 Mounting and removal to/from the control panel How to mount the KT4H/B (Fig.2.4-1, Fig.2.4-2)

MountthecontrollerverticallytoensureitadherestotheDust-proof/Drip-proofspecification(IP66). Mountablepanelthickness:Within1 to 5mm (1)Insertthecontrollerfromthefrontsideofthepanel. (2)Insertthemountingframeuntiltheframetipscomeintocontactwiththepanel,andfastenwithscrews.

Tightenscrewswithonerotationuponthescrewtipstouchingthepanel.Torque:0.05to0.06N•m.

How to remove the mounting frame (Fig.2.4-3)

(1)TurnthepowertotheunitOFF, anddisconnectallwiresbeforeremovingthemountingframe. (2) Insert a flat blade screwdriver between the screw frame and unit1. (3)Slowlypushtheframeupwardusingthescrewdriver2whilepushingtheunittowardthepanel3. (4) Repeat step (2) and slowlypushtheframedownwardusingthescrewdriverfor the other side. The frame can be removed little by little by repeating these steps.

Rubbergasket

＋0.5

Mounting frame

Mountingframe

＋0.5

n×48-3

Lateralclose mounting,n: Number of units mounted

Caution: If lateral close mounting is used

for the controller, IP66 (Dust-proof/Drip-proof) may be compromized, and all warranties will be invalidated.

1. Name and functions of the sections

KT4H or KT4B PV display

MEMO display

MODE key

OUT/OFF key

MODE key : Selects the setting mode, or registers the set value. OUT/OFF key : Switches control output ON/OFF or Auto/Manual control. Increase key :Increases the numeric value. Decrease key : Decreases the numeric value. PV display : Indicates the PV (process variable). SV display : Indicates the SV (main set value). MEMO display : Indicates the set value memory number. Action indicators

: Temperature unit or lights when selected.

T/R : Lights when Serial communication (option) is performing (TX output). AT : Flashes whileAT(auto-tuning) or auto-reset is performing. OUT1: Lights when control output is ON or when Heating output (option) is ON.

Flashes corresponding to the MV in 0.25 second cycles for DC current output type.

OUT2: Lights when cooling output (option) is ON. EVT1 : Lights when Alarm 1 output is ON. EVT2 : Lights when Alarm 2 output (option) is ON or Heater burnout alarm (option) is ON. LOCK: Lights when Lock 1, Lock 2 or Lock 3 is selected.

Tool connector: The following operations can be conducted from external computer by

connecting the tool cable (sold separately). (1) Reading and setting of SV, PID and

2. Mounting to the control panel

2.1 Site selection

various set values, (2) Reading of PV and action status, (3) Function change

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, explosive gases

• Few 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 direct

(Fig.1-1) (Fig.1-2)Bottomview

SV display

Increase key

Decrease key

(Fig. 2.4-1)

(Fig. 2.4-2)

3. Wiring

Turnthe powersupplyto the instrument offbeforewiringor checking it. Working or touching the terminal with the power switched on may result in severe injuryor death dueto Electric Shock.

Warning

Caution

•Theterminalblockof thisinstrumentisdesignedtobe wiredfromtheleftside. Thelead wiremust be insertedfrom the leftside of the terminal, and fastened by theterminalscrew.Thetorqueisapproximately0.63N•m.

• When using a terminalcover(AKT4H801),pass terminal wires numbered 7 to12 intotheholesoftheterminalcover.See(Fig.3-2).

•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.)

•Usethe3-wireRTDwhichcorrespondstotheinputspecificationofthiscontroller.

•Thiscontrollerdoesnothavea built-inpowerswitch,circuitbreakerorfuse.

Therefore,itisnecessarytoinstalltheminthecircuitneartheexternalcontroller. (Recommendedfuse:Time-lag fuse,ratedvoltage250VAC,ratedcurrent2A)

•Fora24VAC/DCpowersource,donotconfusepolaritywhenusingdirectcurrent(DC).

• When using a relay contact output type, externally use a relay according to the

capacityoftheloadto protectthebuilt-inrelaycontact.

•When wiring,keepinputwires (thermocouple,RTD,etc.) away from ACsourcesor

loadwirestoavoidexternalinterference.

• If Alarm 2 and Heater burnout alarm are added together, they (EVT2) utilize

commonoutputterminals.

Lead wire solderless terminal Whenusing aTerminalcover

Usea solderlessterminalwithaninsulationsleevein whichanM3 screw fitsas shownbelow.The torqueis approximately0.63N•m.

Solderless

terminal

Ytype

type

Manufacturer

NichifuTerminalIndustriesCo.,Ltd. TMEV1.25Y-3 JapansolderlessTerminalMFGCo.,Ltd. VD1.25-B3A NichifuTerminalIndustriesCo.,Ltd. TMEV1.25-3Round JapanSolderlessTerminalMFGCo.,Ltd. V1.25-3

5.8mmorless

Model name

5.8mmorless

5. Operation flowchart

theunitproceedstothenextsettingmode.

ControloutputOFF

/Manualcontrol

ForControloutputOFF, press keyforapprox.1sec.

Power ON

PV/SVdisplaymode

(Automaticcontrol)

ForAuto/Manualcontrol, press key.

Press key. Press keywhile

Main setting mode Sub setting mode Auxiliaryfunctionsettingmode Setup mode

(*): Setting items with (*) are optional, and they appear only when the options are added. Numbers suchas [1], [2],etc.are settingitemnumbersin the User’s Manual.

SV AT/Auto-reset

SV2 (*)

SV3 (*)

SV4 (*)

pressing key.

Perform/Cancel

OUT1 proportional band

OUT2 proportional band(*)

Integral time Instrument

Derivative time Communication

ARW Data bit/Parity

OUT1 proportional cycle

OUT2 proportional cycle (*)

Alarm 1 value OUT2 action

Alarm 2 value (*)

Heater burnout alarm value (*)

Heater burnout alarm 2 value(*)

Press keyforapprox.3sec. Press keyforapprox.3sec.

whilepressing key. whilepressing key.

Set value locks

Sensor correction

Communication protocol (*)

number (*)

speed (*)

(*)

Stop bit (*) OUT1 low limit Alarm 1

Communication response time (*)

inputtype, and the SV display input)orscalinghighlimitvalue(DCvoltage,DCcurrentinput).

Output MV indication

Press key.

Input type

Scaling high limit

Scaling low limit

Decimal point place

PV filter time constant

OUT1 high limit Alarm2Energized/

OUT1 ON/OFF action hysteresis

mode selection(*)

OUT2 high limit (*)

OUT2 low limit (*)

Overlap/Dead band (*)

OUT2 ON/OFF action hysteresis (*)

Alarm 1 type ATbias

Alarm 2 type (*)

Alarm1Energized /Deenergized

Deenergized (*)

hysteresis

Alarm 2 hysteresis (*)

Alarm 1 action delayed timer

Alarm 2 action delayed timer (*)

SV rise rate

SV fall rate

Terminalcover(soldseparately)

＋0.5

Tightening

torque

0.63N•m

M3 screw

(Fig. 2.2-1)

＋0.5

(Fig. 2.4-3)

(Fig. 3-2)

Direct/Reverse control

Contact input function (*)

Output status

selectionwheninput

abnormal

OUT/OFF key function

Backlight

PV color

PV color range

Backlight time

EVT2 : Alarm 2 output (option) or

Heater burnout alarm output (option)

OUT1 : Control output or Heating

output (option) OUT2 : Cooling output (option) TC : Thermocouple input RTD : RTD input DC : DC current, voltage input CT1 : Current transformer input

(option: Single, 3-phase) CT2 : Current transformer input

(option: 3-phase) RS-485: Serial communication (option) DI : Contact input (option)

Wiring of Heater burnoutalarm (single,3-phase)

Thisalarmisnotusablefordetectingheatercurrentunderphasecontrol. Usethecurrenttransformer(CT)provided,andpassoneleadwireof the heatercircuitintotheholeof theCT.(Fig.3-4)Whenwiring,keeptheCT wireawayfromACsourcesorloadwirestoavoidtheexternalinterference. Inthecaseof 3-phase,passany2 leadwiresofR,S,TintotheCT, andconnectthemwithCT1(13,14)andCT2(14,15)terminals.

4. Operation

After the unit is mounted to the control panel and wiring is completed, operate the unit following the procedures below.

(1) Turn the power supply to the KT4H/B ON. (2) Initial settings

Refer to “5. Operation flowchart”, “6. Basic operation” and “7. AT Perform/Cancel”. Select an input type, alarm type, Direct/Reverse action, etc. during Setup mode. If initial settings are not required, skip this step, and proceed to step (3).

Input type selection (Default: K, -200 to 1370 )

Alarm type selection (Default: No alarm action “ ”)

Alarm action

Alarm Energized/Deenergized selection

[Default: EVT1contactoutputON(Energized) ]

Direct/Reverse action selection [Default: Reverse (Heating) ] OUT/OFF key function selection (Default: OUT/OFF function )

(3) Input each set value. Referto chapters“5. Operationflowchart” and “6.Basic operation”.

Set value lock selection (Default: Unlock )

(4) Turn the load circuit power ON.

Control action starts so as to keep the control target at the SV (desired value).

(1) Proceed to the Main setting mode.

(2) Set SV.

(3) Register the SV.

(4)

7. AT Perform/Cancel (PID action)

Inordertoset each valueof P,I, DandARW automatically,theauto-tuningprocessshouldbe madeto fluctuatetoobtainan optimalvalue. Sometimestheauto-tuningprocesswillnotfluctuateif auto-tuning

isperformedator nearroomtemperature. Thereforeauto-tuning mightnotfinishnormally.

(1)

(2)

(3)

(4)

Auto-reset can be performed during P or PD action. Auto-reset is cancelled in approximately 4 minutes. It cannot be released while performing this function.

8. Specifications

Power supply: 100 to 240VAC 50/60Hz, or 24V AC/DC 50/60Hz

Indication accuracy

Thermocouple:Within 0.2%ofeachinputspan 1digit, or within 2 (4 ), whicheveris greater

However, for R, S inputs, 0 to 200 (0 to 400 ): Within 6 (12 ) B input, 0 to 300 (0 to 600 ): Accuracy is not guaranteed.

K, J, E, T, N inputs, less than 0 (32 ): Within 0.4% of input span 1digit RTD: Within 0.1%of each inputspan 1digit,orwithin 1 (2 ),whicheveris greater DC current, voltage input: Within 0.2% of each input span 1digit

Control output 1

Relaycontact:1a,Controlcapacity, 3A250VAC(resistiveload) 1A250VAC(inductiveloadcosø=0.4) Non-contact voltage (for SSR drive): 12V DC 15% Max. 40mA (short circuit protected)

DC current: 4 to 20mADC, Load resistance, Max. 550

Alarm 1 output, Alarm 2 output, Heater burnout alarm output

Relay contact 1a, Control capacity, 3A 250V AC (resistive load), Electric life, 100,000 cycles

Control output 2

Relay contact 1a, Control capacity, 3A 250V AC (resistive load), Electric life, 100,000 cycles Non-contact voltage (For SSR drive): 12V DC 15%,Max. 40mADC (short circuit protected)

Contact input : Circuit current when closed: Approx. 6mA Power consumption : Approx. 8VA Ambient temperature, humidity: 0 to 50 (32 to 122 ), 35 to 85%RH (no condensation) Weight : Approx. 120g Accessories included: Mounting frame 1 piece, Rubber gasket (Mounted to the unit) 1 piece,

Heater burnout alarm Single phase 20A:CT1(AKT4815),50A:CT2(AKT4816):1 pieceeach Heater burnout alarm 3-phase 20A:CT1(AKT4815),50A:CT2(AKT4816):2pieceseach

Accessories sold separately: Terminal cover (AKT4H801), Shunt resistor [AKT4810 (50 )]

Please download User’s Manual at http://www.nais-e.com/download/index.html For the detailed usage and User’s Manual, please contact us at the address below.

PanasonicElectricWorksCo.,Ltd.AutomationControlsBusinessUnit

HeadOffice :1048Kadoma,Kadoma-shi,Osaka571-8686,Japan PanasonicElectric Works Europe AG Telephone : Japan (81) Osaka (06) 6908-1050 Rudolf-Diesel-Ring 2 83607 Holzkirchen, Germany Facsimile :Japan (81) Osaka (06) 6908-5781 Thisproducthasbeendeveloped/producedforindustrialuseonly.

(Fig. 3-3)

Heater

K -200 to 1370 K -320 to 2500 K -200.0 to 400.0 K -320.0 to 750.0 J -200 to 1000 J -320 to 1800 R 0to 1760 R 0 to 3200 S 0 to 1760 S 0 to 3200 B 0 to 1820 B 0 to 3300 E -200 to 800 E -320to 1500 T -200.0 to 400.0 T -320.0to 750.0 N -200to 1300 N -320 to 2300 PL- 0 to 1390 PL- 0to 2500 C(W/Re5-26) 0 to 2315 C(W/Re5-26) 0 to 4200 Pt100 -200.0 to 850.0 Pt100 -320.0to 1500.0 JPt100 -200.0 to 500.0 JPt100 -320.0 to 900.0 Pt100 -200 to 850 Pt100 -320 to 1500 JPt100 -200 to 500 JPt100 -320 to 900 4 to 20mA 0 to 20mA 0 to 1V 0 to 5V 1 to 5V 0 to 10V

OFF

setpoint

High/Lowlimitrangealarm

OFF

setpointA1setpoint

OFF

setpoint

:EVT1contactoutputON(Energized) :EVT1contactoutputOFF(Deenergized)

: Reverse action (Heating), : Direct action (Cooling) : OUT/OFF function, :Auto/Manual control function

: Lock 1 (All set values are locked) : Lock 2 (All set values except SV are locked) : Lock 3 (Set values can be changed temporarily,however, after the power is

and

Allowable fluctuation range: 100 to 240V AC: 85 to 264VAC,

Electric life: 100,000 cycles

-2000 to 10000 [Connect 50 shuntresistor (AKT4810,soldseparately).]

-2000 to 10000

High limit alarm

A1 hysteresis

+A1

setting

set point

A1 hysteresis

setting

High limit alarm

with standby

A1 hysteresis

+A1

setting

set point

turned off and on, they return to their previous values.)

(Main setting mode, When setting SV to 100 )

Press key in the PV/SV display mode. The unit proceeds to the Main setting mode.

Set SV with or key.

Control starts. Control starts so as to keep the measuring temperature at 100 .

Proceed to the Sub setting mode.

Press keywhilepressing keyin thePV/SVdisplay mode.TheunitproceedstotheSubsettingmode.

Select AT Perform/Cancel.

Select ATPerform with key, or select ATCancel with key.

Confirm AT Perform/Cancel.

Press key. The unit reverts to the PV/SV display mode.

AT Perform/Cancel

While ATis performing, theAT indicator flashes, and it goes off when ATis cancelled.

Installation instructions 1 copy

Toolcable (AKT4H820)

AboutUser’sManual

Low limit alarm

A1 hysteresis

OFF

setting

setpoint

Process high alarm Process low alarm

setpoint

Low limit alarm

with standby

A1 hysteresis A1 hysteresis

setting

setpoint

24V AC/DC : 20 to 28V AC/DC

Pursuant to the directive 2004/108/EC, article 9(2)

+A1

set point

+A1

set point

OFF

setpoint

(13) (14)

Power supply

High/Lowlimitsalarm

A1 hysteresis

setting

setpoint

A1 hysteresisA1 hysteresis

setpoint High/Low limits alarm

with standby

setting

setpoint

CT1 input terminals