Modbus RTU components

for automation in buildings, installations and systems

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MR-DI4 | 1108341319

4 inputs – digital

MR-DI10 | 1108311319

10 inputs – digital

MR-DO4 | 1108361321 MR-DOA4 | 110836132101

4 outputs – digital (relay)

MR-TO4 | 11083013

4 outputs – digital (triac)

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For detecting potential-free switch states, for example electrical end position switches on vent valves or auxiliary contacts of power contactors.

For detecting potential-free switch states, for example electrical end position switches on ventilation dampers or auxiliary contacts of power contactors. Depending on how the jumper J has been set, the inputs can be operated as contact and voltage inputs (J-GND jumper) or with activation to GND (A2, J - + 24 jumper).

Suitable for switching electrical components, such as motors, contactors, lamps, louvers, etc. With strong inductive loads, we recommend protecting the relay contacts additionally with an RC element. The outputs can be switched by means of standard objects via a Modbus master. The module address, the baud rate and the parity are set by means of two address switches on the front. The MR-DOA4 without manual opera-tion (potentiometer) is available to prevent unauthorized switching.

For switching electrical compo-nents, for example relays, contac-tors, HVAC valves, etc. Especially suitable for noiseless and cyclic switching (PWM).

Inp

uts

• 4 potential-free contact inputs•Voltage input 30 V AC/DC• Switching threshold > 7 V AC/DC

• 10 contact or voltage inputs•Voltage input 30 V AC/DC•High signal detection

> 7 V AC/DC

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• 4 changeover contacts • Switching voltage max. 250 V AC• Rated current max. 5 A/relay• Total current of all contact 12 A• Service life electrical 9 x 104

• Service life mechanical 15 x 106

• 4 digital triac outputs• Switchung voltage

24 – 250 V AC• Rated current 0.5 A/Triac• Switching current < 30 s 0.8 A• Fuses (triacs) 2 A each• Total current over all outputs

max. 2.4 A

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A1 = C1 = 24 V

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ng MR-DI4: 35 x 70 x 65 (mm) MR-DI10: 35 x 70 x 65 (mm) MR-DO4: 35 x 70 x 65 (mm) MR-TO4: 35 x 70 x 75 (mm)

MR-AI8 | 11083213

8 inputs – analog universally programmable

MR-AOP4 | 1108371302 MR-AO4 | 1108351302

4 outputs – analog (0 – 10 V)

MR-DIO4/2 | 1108331326 MR-DIO4/2S | 110833132601 MR-DIO4/2-IP | 1108331326IP

4 inputs – digital2 outputs – digital (relay)

MR-TP | 11083813

6 inputs – digital 2 two-level relay outputs – digital (relay)

To detect resistances and voltages of for example passive and active temperature sensors, electrical vent and mixing valves, valve positions etc. The following characteristic temperature curves are included in the device: PT100, PT500, PT1000, NI1000-TC5000, NI1000-TC6180, BAL-CO500, KTY81_110, KTY81_210, NTC1k8-T, NTC5k-T, NTC10k-T, NTC20k-T, LM235Z (-50 °C up to 130 °C)

It can be used as encoder for control variables, for example for electrical vent and mixing valves, valve positions, etc. The MR-AOP4 allows to switch between automatic and manual mode via the front-side potien-tiometers. The MR-AO4 without manual operation (potentiometer) is available to prevent unautho-rized switching.

Suitable for accommodating, for example in a room, light switches and room contacts and switching two light strips or as blind control. The control of 2 motorized fire dampers is also possible as are many other applications.

Suitable for switching, for examp-le, multi-level pumps and fans or louvers. With strong inductive loads, we recommend protecting the relay contacts additionally with an RC element. The inputs and outputs can be switched and scanned by means of standard objects via a BACnet client. The input terminals 1 to 6 are wired with the C2 terminals on two poles to potential-free switches or contacts. The module has a ma-nual control for the outputs. The module address and the baud rate are set by means of two address switches on the front.

• Selectable characteristic temperature curve

• Resolution 14 Bit •Voltage input

0 – 10 V DC• Resolution 10 mV (0.0-100%)

• 4 digital voltage inputs 30 V AC/DC

•High signal detection > 7 V AC/DC

• 6 digital voltage inputs 30 V AC/DC

•High signal detection > 7 V AC/DC

•Output voltage 0 – 10 V DC

•Output current 5 mA at 10 V DC

• Resolution 10 mV/Digit

• 2 changeover contacts• Switching voltage 250 V AC• Switch-on peak

MR-DIO4/2: 80 A/20 ms MR-DIO4/2S: 160 A/20 ms

•Continuous current per relay MR-DIO4/2: 16 A MR-DIO4/2-IP: 10 A

• Total current of all contacts MR-DIO4/2: 25 A MR-DIO4/2-IP: 20 A

• Service life mechanical: 30 x 106 electrical: 1 x 105

•Output contacts 2x NO contact (semiconductor), 2x two-stage (relays)

• Semiconductor realys Switching voltage 2x 40 V AC/DC Making/breaking current max. 500 mA Nominal current 100 mA

• Relays Switching current 2x 250 V AC Nominal current 6 A (relays) Service life mechanical 30 x 106 cycles Service life electrical 9 x 104 cycles Admissible switching frequency 6 / min. at nominal current

A2 = C2 = GNDA1 = C1 = 24 V

MR-AI8: 50 x 70 x 65 (mm) MR-AOP4: 35 x 70 x 65 (mm)MR-AO4: 35 x 70 x 65 (mm)

MR-DIO4/2: 50 x 70 x 65 (mm) MR-DIO4/2S: 50 x 70 x 65 (mm)MR-DIO4/2-IP: 159 x 41.5 x 120 (mm)

MR-TP: 50 x 70 x 74 (mm)

24V

RIS

C -

CP

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RS

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111424

S1

S1

313444

InputsS2

S2

1 6 C2

BUS A -BUS B +

A1/ +24V A2/ GND

...

MR-SI4 | 11083913

4 S0 inputs

MR-DI4-IP | 110834131901IP

4 inputs – digital

MR-CI4 | 1108401332 4 inputs – analog

NG4 (gray)110561-01

Power supply unit 24V DC /700mA

Suitable for counting S0 counter pulses. This allows very good integration of the module into an energy controlling system. In case of a power failure, the last counter readings are saved. The inputs can be scanned by means of standard objects via a Modbus master. The module address, the baud rate and the parity are set by means of two address switches on the front.

Suitable for detecting potential-free switch states from electrical limit switches and their external status display such as fire dampers or vent valves. The inputs can be operated by means of potential-free switches or contacts or used as voltage inputs. The inputs can be scanned by means of standard objects via a Modbus master. The module address, the baud rate and the parity are set by means of two address switches or by software.

Suitable for detecting currents and voltages of, for example, passive and active temperature sensors, electrical vent and mixing valves, valve positions, etc. The inputs can be scanned by means of standard objects via a Modbus master. The module address, the baud rate and the parity are set by means of two address switches on the front.

The power supply NG4 supplies regulated direct voltages for supplying power to the respective devices of the product range I/O components. The device supplies regulated direct voltage 24 V DC at a power of 16 watts.

• 4 S0 inputs according to stan-dard DIN EN 62053-31 class A

• 4 digital voltage inputs 30 V AC/DC

•High signal detection >7 V AC/DC

• 4 digital voltage inputs 0 V bis 10 V DC

•Nominal voltage 110 – 240 V AC, 50/60 Hz

• Internal fuse T 1.0 A/250 V soldered fuse

•Output power 16 W•Output voltage

+24 V DC•Operating voltage display

green LED•Output current

(max.) 700 mA •As-delivered accuracy ±5 %•Mains failure backup

40 ms

MR-SI4: 35 x 70 x 65 (mm) MR-DI4-IP: 50 x 70 x 65 (mm) MR-CI4: 35 x 70 x 65 (mm) NG4 (gray): 50 x 70 x 65 (mm)

MO

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us R

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RS-

485

A1/ +24V A2/ GND

BUS B +BUS A -

24V

RIS

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24V AC / 170mA24V DC / 65mAGND, Class 2

S01+

S01

S04+

S04

S02+

S02S03+

S03

BUS A-

BUS B+A2 /GND

A1/+24 V

Mod

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RTU

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5

RISC

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24 V1

2

C1

3

C1

4

C1

C1

GND

USB/RS485 Converter | 11080101

MR-CT Software | 110849

The USB to RS485 converter allows to connect devices with serial UART interface quickly and easily to USB. The transparent USB plug includes LEDs to view the Tx and Rx traffic on the cable. The other end of the cable consists of bare, tinned wi-res. Combined with our configura-tion software MR-CT, the Modbus devices of the MR series can be connected and configured directly. The converter is USB and USB 2.0 full speed compatible and supports a data transfer rate up to 3 Mbps. The required USB-RS485 drivers are available to download for free from http://www.ftdichip.com.

The software MR-CT is used for the parameterization of Modbus devices and also for searching devices in a Modbus network. It allows the setting of all commu-nication parameters such as baud rate, parity, addresses, tempera-ture characteristics of temperature sensors.

Application matrix

Application examples for I/O components

Application Function Function is carried out by ... Appropriate device

Heating

• Actuateheatregisters Ö Relay,digitaloutput •MR-DO4

• Measureroomtemperatures ÖAnaloginput •MR-AI8

• Actuatepumps(i.e.supplyline) Ö Relay,digitaloutput •MR-DO4

• Actuatemixermotors ÖAnalogoutput • MR-AOP4,MR-AO4

• Actuatemotorvalves(radiators) Ö TRIACoutput,analogoutput • MR-TO4,MR-AOP4

• Actuatefancoils Ö Relay,digitaloutput,TRIACoutput • MR-DO4,MR-TO4

Air-conditioning

• Actuatemotorvalves(radiators) Ö TRIACoutput,analogoutput • MR-TO4,MR-AOP4

• Collecttemperatures ÖAnaloginput •MR-AI8

• Motoractuationofwindowflaps Ö Relay,digitaloutput •MR-DO4

• Collectwindspeeddata ÖAnaloginput •MR-AI8

• Detectrainsensor ÖAnalogordigitalinput(dependingon • MR-AI8,MR-DI10

Aeration

• Actuatefanmotors Ö Relay,digitaloutput •MR-DO4

• Capturethepositionofaerationvalves ÖDigitaloranalogoutput(dependingon • MR-AI8,MR-DI10

• Actuateaerationvalves Ö Relay,digitaloranalogoutput • MR-DO4,MR-AOP4

• Measureandcontrolvolumeflowrate ÖAnaloginput •MR-AI8

• Captureairpressureoneithersideofpressuremonitor ÖAnaloginput •MR-AI8

• MeasureCO2concentrationinrooms(i.e.inlargestores) ÖAnaloginput •MR-AI8

• Harmfulgasmonitoring ÖAnaloginput •MR-AI8

Lighting and shading

• Switchthelightonoroff Ö Relais,digitaloutput • MR-DO4,MR-DIO4/2

• Collectswitchstates(i.e.lightswitches) ÖDigitalinput • MR-DI10

• Upordownmovementofsunblinds(three-pointdrive) Ö 2two-levelrelayoutputs •MR-TP

• Brightnessmeasurement ÖAnaloginput •MR-AI8

• Collectwindspeed(i.e.sunblindprotection) ÖAnaloginput •MR-AI8

• Actuationofmotorizedwindowcurtains Ö 2two-levelrelayoutputs •MR-TP

Fire alarm systems

• Actuationoffiredampermotors Ö Relay,digitaloutput • MR-DO4,MR-DIO4/2

• Detectendpositionsoffiredampers ÖDigitalinputs • MR-DI10,MR-DIO4/2

• Turn-onsprinklersystem Ö Relais,digitaloutput •MR-DO4

Smoke extraction

• Smokeextractionwithflapdrives Ö Relais,digitaloutput •MR-DO4

• Detectflapposition ÖDigitaloranalogoutput • MR-DI10,MR-AI8

• Smokeextractionbyfanactuation Ö Relais,digitaloutput •MR-DO4

• Unblocklightbarriersofelevators ÖDigitalinput • MR-DI10,MR-DI4

Burglary and access control

• Peoplecounting ÖDigitalinput,countinginput • MR-SI4,MR-DI10

• Motiondetector ÖDigitalinput • MR-DI10,MR-DI4

• Monitorwindowcontacts ÖDigitalinput • MR-DI10,MR-DI4

• Collectdataofvibrabtiondetectors(i.e.windowpanes) ÖDigitalinput • MR-DI10,MR-DI4

• Collectinfraredsensordata ÖDigitalinput • MR-DI10,MR-DI4

• Collectradarsensordata ÖDigitalinput • MR-DI10,MR-DI4

• Alarmsensor Ö Relais,digitaloutput •MR-DO4

Energy management

• Meterreading(water,gas,current,heat) ÖDigitalinput,countinginput •MR-SI4

• Loadthrow-off Ö Relais,digitaloutput •MR-DO4

• Motionsensor(turnthelightoff) ÖDigitalinput • MR-DI10

• Collecttemperatures ÖAnaloginput •MR-AI8

• Allocateenergyconsumptiontocostcenters ÖCountinginput •MR-SI4

I/O components with Modbus RTU

For automation in buildings, installations and systems

Safeandlow-costoperationofinfrastructuresinlarge,butalsoinsmall,buildingsnowadaysrequiresthatthemostimportantoperationalfunctionssuchassystemcontrol,air-conditioning,ventilationandlightingareexecutedauto-matically.However,thisalsomakeshigherdemandsonthefunctionsofthebuildinginstallation,whichcanusuallybemetbyconventionaltechnologyonlywithlargeexpenditures.Thisiswhybuildingautomationisincreasinglyusingserialbussystems,whichexecutethetransmissionofinformationbetweensensorsandactuators,switchesandhigher-rankingcontrolsystems.

Bussystems,inparticularModbusRTU,offerdifferentadvantages:•easierplanningandinstallationofthebuildingfunctions•highflexibilityinuseofthebuilding,asthefunctionsarefreelyassignable andcanthusberesetandreadjustedasrequiredatanytime.

f Compact and intelligent I/O components for decentralized applications

TheircompactdesignfortheDINrail(standardfrontdimensionof45mm)andwidevarietyoftypes,alsointheIP65housing,maketheI/OcomponentsfromMETZCONNECThighlysuitableforuseindecentralizedapplications.Themodulescanbeusedwheretheyarereallyneeded.Thisconsiderablyreducesthewiringeffortforcontrolscomparedwithacentralizedinstallationinaswitchcabinet.More-over,thecompactmixingratiooftheMETZCONNECTI/Ocom-ponentsadaptedtotheparticularapplicationoptimizesthenumberofunusedinputsandoutputs.

fMinimum wiring required and series connection of the I/O components by means of jumper plugs

ThepowersupplyandthebusconnectionareestablishedandpassedononthetopsideorfrontsideoftheI/Ocomponents.Theuseofjumperplugsallowsupto15modulestobeconnectedeasilyandquicklytooneanotherandarrangedinarow.Aterminalblockattheendallowstransitiontoacontinuingcable.

Modbus componentsModbus-RTU(RemoteTerminalUnit)isworldwidethemostoftenusedfieldbusinindustrialautomation.Here,theModbusdevelopedtoadefactostandardasitisanopencommunicationprotocol.Thisfieldbususesalsothemaster/slaveprocessbasedontheRS485interface.OurcomponentsareModbusslavesandarescannedandactuatedbyaModbusmaster.

RS485 interface TheRS485interfacewasdevelopedforfastdatatransmissionoverlongdistancesinthefield,thatmeansdirectlytosensors(suchasourinputmodules)andactors(suchasouroutputmodules).Thus,itallowsforcablelengthsupto1.2kmanddatatransmissionratesofupto500,000Bit/sbysocalledtwistedpairinstallationorfieldbuscables.ThisinterfaceismoreandmoreusedinconnectionwiththeabovementionedcommunicationprotocolModbusRTU.

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ImTal2

78176Blumberg

Germany

Phone +497702533-0

Fax +497702533-189

info@metz-connect.com

www.metz-connect.com

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200TornilloWayTintonFalls,NJ07712USAPhone +1-732-389-1300Fax +1-732-389-9066www.metz-connect.com

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1KakiBukitAve3#10-01KB-1Singapore416087Phone +6567470998Fax +6567463120www.metz-connect.com

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Room1518,XuHuiBusinessBuilding,168,YuDeRoad,XuHuiDistrict,Shanghai200030ChinaPhone+862133634228Phone+862133634334Fax +862133634224

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899327-01|10/2013