MODBUS-RTU: REMOTE I/O - Acromag

These low-cost multi-

channel I/O modules

are ideal for remote

I/O applications with

limited space and

those requiring a

handful of channels

in many locations.

BusWorks® I/O Modules for Modbus-RTUAcromag’s BusWorks 900MB series is a collection of analog and discrete I/O modules with Modbus-RTU network communication. BusWorks modules are ideal for a wide variety of distributed I/O applications including data acquisition, control, process monitoring, and test & measurement.

Analog input modules accept DC current, voltage, or temperature sensor signals and feature local limit alarm capabilities. Analog output modules provide DC current or voltage signals for local displays, recorders, variable frequency drives, valves, and other equipment.

Discrete I/O modules monitor and/or control on/off status of industrial devices.

Windows® configuration software simpli-fies module setup with easy selection of input/output ranges, alarm setpoints, and other operating parameters.

All 900MB Modbus I/O modules com-municate over a high-speed RS-485 net-work supporting data transfer rates up to 115K baud.

Inputs• Thermocouple • DC voltage• RTD/Resistance • DC current• Millivolt • AC current• Frequency • Discrete status

Outputs• DC voltage• DC current• Discrete switches or local limit alarms

Power• 10-36V DC• 24V AC

Approvals• CE, UL/cUL Class I Div 2 Groups ABCD

For more information, visit our website atwww.acromag.com/modbus

Call 877-214-6267 or 248-295-0880 for technical assistance.

MODBUS-RTU: REMOTE I/O

8401-003

Tel: 248-295-0880 e-mail: [email protected] www.acromag.com

9 0 0 M B S e r i e sM

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900MB SeriesModbus-RTU I/O ModulesThe 900MB series is a high-performance line ofmulti-function I/O modules. These units featureuniversal input/output ranges and an intelligentmicrocontroller to provide extreme flexibility andpowerful monitoring and control capabilities.Select from a variety of analog and discrete I/Omodels to meet your application requirements.

To ensure unsurpassed performance, these I/Omodules employ the latest digital technology.State-of-the-art flash microcontrollers plus opti-cally isolated input, output, power, and networkcircuits increase noise/transient immunity andprevent ground loops. Status LEDs provide diagnostic feedback and visually indicate whichchannels are outside their calibrated range.

Sophisticated watchdog timer functions allowthe application to define the module's failsafeoutput state. The watchdog timer invokes thefailsafe condition when communication betweenthe host and module exceed a duration specifiedby the application. For further security, a secondhardware watchdog timer monitors the micro-controller for failed operations or a “lock-up”condition and automatically resets the unit.

n Special Featuresn High-speed RS-485 communication allows data

transfers up to 115K baud

n Modbus RTU protocol interfaces to popularHMI and SCADA software packages

n Wide-range, polarity-insensitive power supplysupports 10-36V DC and 24V AC sources

n Powerful watchdog timers allow user-definedfailsafe state when host communication is lost

n Isolation eliminates potential ground loopsbetween I/O, power, and network circuitry

n Default switch allows user to set module toknown communication parameters

n Menu-based Windows® configuration softwaresimplifies setup and trouble-shooting

n Discrete I/OThese modules monitor discrete levels of variousdevices and/or provide on/off control capabilitiesdepending on the model selected. Each moduleoffers high channel density to save space andkeep costs low. Models are available with twelveinputs, twelve outputs, or twelve bidirectional I/O channels.

Inputsn Active-high inputs, 0 to 35V DCn Active-low inputs, 0 to 35V DC

Outputsn Sourcing outputs, 5.5 to 35V DC, 250mAn Sinking outputs, 0 to 35V DC, up to 1A

Functionsn Monitor discrete state or leveln On/off controln Activate audible or visual alarmsn Transmit discrete data to other control systems

n Analog InputThese units monitor DC or thermocouple sensorinputs and provide alarm outputs if conditionsexceed user-defined limits. Each module has fouranalog input channels and four discrete outputsfor independent local alarms or host-controlledon/off switching.

Inputsn DC currentn DC voltagen DC millivoltsn Thermocouplen RTD/resistancen Frequencyn AC current

Outputsn Open drain MOSFETs (1A solid-state switches)

Functionsn Temperature monitoringn Process variable measurementn Limit alarms with high and/or low setpointsn On/off control

n Analog OutputAnalog output modules are ideal for controllinga wide variety of industrial machinery. The hostdefines the output of voltage or current signalsto control speed, flow, temperature, frequency,level, force, torque, intensity, and many otherproperties. Each module has four analog outputchannels plus four discrete outputs for on/offswitching applications.

Outputsn DC voltagen DC currentn Open drain MOSFETs (1A solid-state switches)

Functionsn Write data to local displays or recordersn Control drives, valves, and other equipmentn Transmit discrete data to other control systemsn On/off control (alarms)

Modbus I/O Network

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n Accessories

n Configuration Tools

Acromag provides a full set of tools to help you get your modules set up and ready to install.

Software Interface PackageIncludes the following:

- Configuration Software Utility- Instruction manuals- Serial port converter- Interface cable

n Network Devices

Everything you need to drive your network is available from Acromag: isolators, converters, signal boosters, and power sources.

Universal 50W Power Supply Isolated RS-232/485 Converter Isolated RS-485 Network Repeater

n Mounting HardwareInstallation is a snap with Acromag accessories.

DIN RAIL Bars 19" Rack-Mount Kit

n General ModuleSpecifications

n Communication InterfaceNetwork CommunicationModbus-RTU protocol, RS485 (3-Wire). Standard Protocol implementation as defined under “Modicon Modbus Reference Guide” PI-MBUS-300 Rev. J. Reference: http://public.modicon.com. Search on: PI-MBUS-300 for technical publication.

Baud Rate2400, 4800, 9600, 14.4k, 19.2k, 28.8k, 38.4k, 57.6k, 76.8k, or 115.2k baud. Default 9600 baud.

Module Addressing0 to 247, selectable. Default address 247.

Network Distance4000 feet without network repeater.

NodesSupports up to 32 modules without the use of a network repeater.

ParityOdd, even, or none. Default setting none.

Stop BitsOne with parity, one or two with no parity. Default setting is two stop bits with no parity.

Watchdog Timer (Hardware)A hardware watchdog timer is built into each module to perform a reset if the microcontroller fails to return from an operation in a timely manner or "locks up."

Watchdog Timer (Network Communication)All modules have a communication watchdog timerfunction. The watchdog timer is configurable for timeout periods of up to 18 hours. This timer function monitors I/O communications with the hostcontroller. In the event of lost communications, outputports optionally reset to a user-defined state or level.The watchdog timer restarts with a read/write to anI/O channel.

n EnvironmentalAmbient TemperatureOperation: -25°C to +70°C (-13°F to +158°F).Storage: -40°C to +85°C (-40°F to +185°F).

Relative Humidity5 to 95% non-condensing.

Radiated Field Interference Immunity (RFI)Complies with EN61000-4-3 Level 2 and EN50082-1(3V/M, 80 to 1000MHz AM and 900MHz keyed).

Electrical Fast Transient Immunity (EFT)EN61000-4-4 Level 1 and EN50082-1 (0.5KV power, signal lines).

Electrostatic Discharge (ESD) ImmunityEN61000-4-2 Level 3 and EN50082-1 (8KV/4KV air/direct discharge).

Surge ImmunityEN61000-4-5 (0.5KV) and EN50082-1.

Radiated EmissionsMeets EN50081-1 for Class B equipment.

ApprovalsCE marked. UL listed for US and Canada. Class I; Division 2; Groups A, B, C, D.

n Enclosure/PhysicalEnclosureSelf-extinguishing NYLON type 6.6 polyamide thermo-plastic UL94 V-2, color beige; general purpose NEMAType 1 enclosure.

Connectors (Removable Terminal Blocks)Wire Range: AWG #12-24, stranded or solid copper.

Dimensions1.05W x 4.68H x 4.35D inches 26.7W x 118.9H x 110.5D mm.

DIN Rail MountingDIN rail mount, Type EN50022; "T" rail (35mm).

Shipping Weight1 pound (0.45 Kg) packed.

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FREQUENCY INPUT

(W/ALARMS)

Frequency/Counter�TTL, dry contact, high/low-side transistor switches, magnetic pickups, proximity sensors

ANALOG INPUT

(W/ALARMS)

ANALOG OUTPUT�

(W/ALARMS)

TEMPERATURE �INPUT

(W/ALARMS)

901

902

903

904

905

906

On/Off Monitoring & Control, High/Low Status & Switching motors, pumps, heaters, solid-state relays, other discrete devices

Voltage/Current Signal Generation variable frequency drives, valves, motors, �positioners, displays, recorders

Voltage/Current Signal Measurement�sensors: flow, level, speed, pressure, etc.

Thermocouple/Millivolt/RTD�sensors: temperature, O2, �cathodic monitor, DC shunt

DCS

OI Terminal

PLC

Workstation

Remote Workstation

Server

Server

EXECUTIVE NETWORK - Business O

perations

PLANT NETWORK - Monitoring and Control

I/O NETWORK - Modbus-RTU to Sensors a

nd Actuators (RS-485, 4000ft, 3

2 devices, 115Kbps)

DISCRETE I/O

HMI Software Citect Iconics Intellution LabView Wonderware

Modems

Acromag 900MB Series I/O Modules 901MB 12 DI (active low) 913MB 4 AI (mADC), 4 DO 902MB 12 DO (sinking) 914MB 4AI (VDC), 4 DO 903MB 12 DI/DO (as above) 917MB 4 AO (mADC), 4 DO 904MB 12 DI (active high) 918MB 4 AO (VDC), 4 DO 905MB 12 DO (sourcing) 924MB 4 TC/mV, 4 DO 906MB 12DI/DO (as above) 934MB 4 RTD, 4 DO 942MB 2 Freq, 2 DO

SimplifiedEnterpriseDiagram

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n Software SupportSeries 900 I/O modules are compatible with popular Human-Machine Interface (HMI) softwarepackages that support Modbus communication.The I/O modules may be configured using genericdrivers provided with the HMI software to accessthe Modbus register maps.

A list of popular third-party HMI software manufacturers:n AB/Rockwell n National Instrumentsn Citect n Steeplechasen Iconics n Think and Don Intellution n Wonderware

Acromag also offers a configuration utility forfaster and easier setup. This software provides anintuitive approach to select configuration optionsfor your application. Familiar Windows pull-downselection menus and fill-in-the-blank fields speedyou through a few brief configuration screens. Noprogramming is required. The utility also helpsyou monitor and verify proper operation of themodule outside the main control software. Thisdiagnostic tool provides a simple alternative tousing Modbus register maps.

n Easy ConfigurationAcromag’s configuration software is designed foroffline setup at a bench or in the field with a lap-top computer. Configuration settings can besaved to a file or printed for archival purposes.Setup is quick and easy using the steps below.

1) Connect the module to a PC with the cableand RS-232/485 converter (typical system).Apply power.

2) In the software, open a saved configurationor select the Module Upload option.

3) Configure the operating parameters asdesired and download the configuration intothe module.

4) Use the software’s Test function to verifymodule operation and communication.

5) Install the module on the network.

Acromag’s configuration software can be used offline to set up a module and save the configuration to a file.

Limit alarms are easy to configure with fill-in-the-blank fields in engineering units for high/low alarm setpoints.

Module Configuration

Acromag�Configuration Software�

for Windows®

RS-232/485 Converter and

RS-485/3-wire Cable

900MB Module (all models)

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901/902/903MBMulti-ChannelDiscrete I/OModules

Active-Low InputsSinking Outputs(Low-Side Switching)

Models901MB: 12 input channels902MB: 12 output channels903MB: 12 input/output channels

InputTwelve input channels (901, 903 models only) 0 to 35V DC

OutputTwelve output channels (902, 903 models only) O to 35V DC

Network Communication Modbus-RTU high-speed RS-485

Power Requirement10 to 36V DC,24V AC

ApprovalsCE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D.

n DescriptionThese modules provide twelve discrete inputand/or output channels. Isolation separates theI/O, power, and network circuits. Network communication adheres to the industry-standardRS-485 Modbus RTU protocol. Both AC and DCpower sources are supported with wide range,nonpolarized, diode-coupled terminals.

The open-drain outputs are intended for current-sinking or low-side switching applications. Thebuffered inputs are active-low. These models arethe complement of the 904, 905, and 906 unitswhich have open-source, high-side outputswitches and active-high inputs. Socketed pull-upresistors are easily removed or exchanged to sat-isfy your application requirements.

The 903MB model has twelve input/outputpoints that may be used as inputs or outputs ona bit-by-bit basis. Outputs may be read back toverify output settings.

Combining flexible I/O types, wide I/O ranges,and a network interface in a single package,makes this instrument extremely powerful. Multi-channel design adds cost-efficiency andallows high-density mounting. Plus, safe, ruggedconstruction makes these modules reliable foruse in both control room and distributed field I/Oapplications. Custom module configurations arealso possible (consult factory for details).

n Special Featuresn Standard Modbus RTU protocol with high-speed

RS-485 communication (up to 115K bps)

n Twelve I/O channels in a single inch-wide unitreduces system costs and saves panel space

n High-voltage, high-current, open-drain outputsenable direct (low-side) control of externaldevices

n High-voltage buffered inputs monitor discretelevels from a variety of industrial devices

n Tandem input/output circuitry (903 modelsonly) connects input buffers with open-drainoutputs for convenient loopback monitoring ofthe output state

n Outputs have built-in over-temperature andover-current shut-down protection, plus activeclamping circuits for switching inductive loads

n Watchdog timers provide a configurablefailsafe output state for use when hostI/O communication is lost

n Three-way isolation eliminates potentialground loops between power, I/O, andnetwork circuitry

n Self-diagnostics monitor microcontroller activityto detect operational failures (lock-up) andexecute a reset to restore communication

ModbusRS-485

10-36V DC�or 24V AC

Isolation

Twelve�Discrete�

Inputs or Outputs

Power

Inputs (4)

or

Outputs (4)

Inputs (4)

or

Outputs (4)

Inputs (4)

or

Outputs (4)

High-Density Discrete I/O ModuleModbus/RS-485

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■ Performance

■ Discrete Inputs(901 & 903 models only)Input Type12 active-low, buffered inputs, with a common con-nection. Inputs include transient suppression devicesand series connected 100K ohm resistors, plus diodeover-voltage clamps to the internal +5V supply.

Input Signal Voltage Range0 to 35V DC, maximum.

Input Current293µA, typical at 35V DC.

Input Signal ThresholdTTL compatible with 100mV of hysteresis, typical.Low-to-High threshold is 1.7VDC, High-to-Low is1.6VDC, typical. Limited to TTL levels of 0.8VDC(max. LOW level) and 2.0VDC (min. HIGH level).

Input Resistance100K ohms, typical.

Input Hysteresis100mV DC, typical.

■ Discrete Outputs(902 & 903 models only)Output Type12 independent, open-drain, DMOS MOSFET switcheswith a common source connection that operate aslow-side switches.

Output Voltage Range0 to 35V DC max. (0 to 500mA/channel continuous).External voltage source required.

Output ON Resistance0.28 ohms maximum.

Output Response TimeForce Single Coil: Output updates within 250µs ofreceipt of a command.Force Multiple Coils: First coil updates in 250µs, followed successively by additional coils every 180µs.

■ GeneralI/O Pull-ups and Socket5.6K ohm pull-up resistor SIPs are installed in socketsat each port (four-channels per port).

Excitation (per port)External excitation voltage for each four-channel portis limited to 35V or less.

Supported Modbus CommandsThe command/response protocol for communicatingwith this module adheres to the Modbus/RTU standardfor the following Modbus Functions.

Read Coil (Output) StatusRead Input Status Read Holding RegistersForce Single Coil (Output)Preset Single RegisterReset SlaveForce Multiple Coils (Outputs)Preset Multiple RegistersReport Slave ID

LED IndicatorsLEDs indicate power, status, and discrete level.

Power Requirements10 to 36V DC, 22 to 26V AC.

Supply CurrentSupply Current Draw10V DC 130mA maximum24V DC 54mA maximum24V AC 95mA maximum

Isolation1500V AC for 60 seconds or 250V AC continuous. 3-way isolation between I/O, network, and powercircuits.

■ OrderingInformation

Models901MB-0900Discrete input module902MB-0900Discrete output module903MB-0900Discrete input/output module

Accessories900C-SIPConfiguration Software Interface Package(includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable)4001-095USB-to-RS232 adapterTBK-B02Optional terminal block kit, barrier strip style, 4 pcs.TBK-S02Optional terminal block kit, spring clamp style, 4 pcs.PS5R-VB24Power supply (24V DC, 2.1A)

DIGITAL INPUT CONNECTIONS (ACTIVE LOW) DIGITAL OUTPUT CONNECTIONS

RTN

+5V

INP

INP

RTN

CH 0

RTN

CH 1

CH 2

CH 3

5V TTL LOGIC - INPUT CAN BE PULLEDUP INTERNALLY OR EXTERNALLY

DIGITAL I/OSHARESRETURN

EXC1TB1

INTERNAL INPUTPULL-UPS ARE PRESENT

DIG

ITAL

INo

rO

UT

CH11

RTN

46

45

44CH10

RS

48

5

41

42

43

EXC3

TB4

CH 8

CH 9

35

36

COM

COM

TB1

DIG

ITAL

INo

rO

UT

12

11

CH 0

EXC1

CH 1

13

14

15

CH 2

CH 3

RTN

16

DIG

ITAL

INo

rO

UT

TB2

21 EXC2

CH 4

22

24

23

CH 6

CH 5

RTN

CH 7

25

26

34

33D

D

31

32

TB3

PW

R

DIGITALI/O

10 TO 36V DCOR 24V ACNON-POLARIZED

DIGITALI/O

DIGITALI/O AC/DC

POWER

NETWORKCOMMUNICATION

903MB shown.901MB & 902MB

are similar.

A

B

TB

3

TB

2

TB

4

TB

1

CH 0

RTN

CH 1

CH 2

CH 3

EXC1TB1

OUT

RTN

DIGITAL I/OSHARESRETURN

EXC

INP

SPSTRELAY

12-24V DC,TYPICAL

+

RTN

EXC

RTN

INP

5-35V

V

RTN

I/O

902MB/903MBON

TO OTHER 3CHAN OF PORT100K

OFF

EXC903MB

+5V

LOAD

Optional terminal blocks: barrier strip (left) and spring clamp (right). Cage clamp terminal is standard.

8401-003




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904/905/906MBMulti-ChannelDiscrete I/OModules

Active-High InputsSourcing Outputs(High-Side Switching)

Models904MB: 12 input channels905MB: 12 output channels906MB: 12 input/output channels

InputTwelve input channels (904, 906 models only)0 to 35V DC

OutputTwelve output channels (905, 906 models only)6 to 35V DC

Network CommunicationModbus-RTU high-speed RS-485



n DescriptionThese modules provide twelve discrete inputand/or output channels. Isolation separates the I/O, power, and network circuits. Networkcommunication adheres to the industry-standardRS-485 Modbus RTU protocol. Both AC and DCpower sources are supported with wide range,nonpolarized, diode-coupled terminals.

The outputs are intended for current-sourcing orhigh-side switching applications. The bufferedinputs are active-high. These models are thecomplement of the 901, 902, and 903 unitswhich have low-side output switches and active-low inputs. Socketed pull-down resistorsare easily removed or exchanged to satisfy yourapplication requirements.

The 906MB model has twelve input/outputpoints that may be used as inputs or outputs ona bit-by-bit basis. Outputs may be read back toverify output settings.

Combining flexible I/O types, wide I/O ranges,and a network interface in a single package,makes this instrument extremely powerful. Multi-channel design adds cost-efficiency andallows high-density mounting. Plus, safe, ruggedconstruction makes these modules reliable foruse in both control room and distributed field I/Oapplications. Custom module configurations arealso possible (consult factory for details).



n Twelve I/O channels in a single inch-wide unitreduces system costs and saves panel space

n High-voltage, high-current, open-sourceoutputs enable direct (high-side) control ofexternal devices

n High-voltage buffered inputs monitor discretelevels from a variety of industrial devices

n Tandem input/output circuitry (906 modelsonly) connects input buffers with open-sourceoutputs for convenient loopback monitoring ofthe output state


n Three-way isolation eliminates potentialground loops between power, I/O, andnetwork circuitry


ModbusRS-485


Isolation

Twelve�Discrete�

Inputs or Outputs

Power

Inputs (4)

or

Outputs (4)

Inputs (4)

or

Outputs (4)

Inputs (4)

or

Outputs (4)

High-Density Discrete I/O ModuleModbus/RS-485

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n Performance

n Discrete Inputs(904 & 906 models only)Input Type12 active-high, buffered inputs, with a common con-nection. Inputs include transient suppression devicesand series connected 100K ohm resistors, plus diodeover-voltage clamps to the internal +5V supply.

Input Signal Voltage Range0 to 35V DC, maximum.

Input Current293µA, typical at 35V DC.

Input Signal ThresholdTTL compatible with 100mV of hysteresis, typical.Thus, Low-to-High threshold is 1.5VDC, High-to-Low is1.4VDC, typical. Limited to TTL levels of 0.8VDC(max. LOW level) and 2.0VDC (min. HIGH level).

Input Resistance5.6K ohms with standard factory pull-down resistorsinstalled. 100K ohms without pull-downs.

Input Hysteresis100mV DC, typical.

Input Response Time500ns for low-to-high, 2µS for high-to-low, typical.Microcontroller samples inputs as a group every 10mS.

n Discrete Outputs(905 & 906 models only)Output Type12 independent, open-source, MOSFET switches thatoperate as high-side switches.

Output Voltage Range6 to 35V DC (0 to 250mA/channel continuous).External excitation voltage required.


Output Response TimeOutputs update within 50ms of a write command andswitch within 5mS of receipt of command. Loopbackresponse (906MB) is 1µS low-to high, 5µS high-to-low.n General

I/O Pull-downs and Socket5.6K ohm pull-down resistor SIPs are installed insockets at each port (four-channels per port).

Excitation (per port)External excitation voltage for each four-channel portis limited to 35V or less.

Supported Modbus CommandsThe command/response protocol for communicatingwith this module adheres to the Modbus/RTU standardfor the following Modbus Functions.

Read Coil (Output) StatusRead Input StatusRead Holding RegistersRead Input RegistersForce Single Coil (Output)Preset Single RegisterReset SlaveForce Multiple Coils (Outputs)Preset Multiple RegistersReport Slave ID

LED IndicatorsLEDs indicate power, status, and discrete level.

Power Requirements10 to 36V DC, 22 to 26V AC.

Supply CurrentSupply Current Draw10V DC 90mA maximum24V DC 40mA maximum24V AC 75mA rms maximum

Isolation1500V AC for 60 seconds or 250V AC continuous. 3-way isolation between I/O, network, and powercircuits.

n OrderingInformation

Models904MB-0900Discrete input module905MB-0900Discrete output module906MB-0900Discrete input/output module


DIGITAL INPUT CONNECTIONS (ACTIVE HIGH)

DIG

ITA

L IN

or O

UT

45

46

TB4

CH11

COM

TB

4

CH 9

CH10

CH 8

44

43

42

36

41

TB3

EXC3

10 TO 36V DC�OR 24V AC�NON-POLARIZED

D

COM

COM

D

RS

48

5

33

34

35

31

32

A

B

PW

R

TB

3

TB

1

DIGITAL�I/O

DIGITAL�I/O

DIGITAL�I/O

TB

2

AC/DC�POWER

NETWORK�COMMUNICATION

TB1

EXC1

CH 0

12

11

DIG

ITA

L IN

or O

UT

13 CH 1

CH 2

CH 3

14

15

16 RTN

TB2

EXC2

CH 4

22

21

DIG

ITA

L IN

or O

UT

23 CH 5

CH 6

CH 7

24

25

26 RTN

906MB shown.�904MB & 905MB�

are similar.

INP

COM

INP

RTN

+5V

COM

INP

TB1

RTN

CH 3

CH 2

CH 1

CH 0

EXC1

DIGITAL I/O�SHARES COMMON

INTERNAL �INPUT �PULL-DOWNS�ARE PRESENT

5V TTL LOGIC INPUT IS ACTIVE HIGH�AND PULLED DOWN INTERNALLY

DIGITAL OUTPUT CONNECTIONS

CH 0

RTN

CH 1

CH 2

CH 3

EXC1TB1

OUT

RTN

DIGITAL I/O SHARES RETURN

UP TO�35V DC

SPST�RELAY

+

RELAY COIL/SOLENOID DRIVER (905MB/906MB)

LocateSnubberat Coil

5-35VTypical

ON (1)

EXC

I/O

RTN

905MB

OFF (0)

RTO OTHER 3

CHAN OF PORT

CHLED OPEN

INTERNAL PULL-DOWN IS OPEN

FOR 905MB

+


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913/914MBMulti-ChannelAnalog InputModules

DC Current,DC Voltage orAC Current Input

Limit Alarms orDiscrete Outputs

Models913MB: 4 current input channels914MB: 4 voltage input channels

Input Ranges0 to 20mA DC,±10V DC,0 to 20A AC (with 5020-350 sensor)

OutputFour output channels:Open-drain MOSFETs (1A DC loads)0 to 35V DC




n DescriptionThis signal conditioner is a four-channel analoginput module with four discrete outputs. It provides isolation between input, output, power,and network circuits. Network communicationadheres to the industry-standard RS-485 ModbusRTU protocol. AC and DC power sources aresupported with nonpolarized, diode-coupled terminals.

The inputs accommodate wide DC voltage orcurrent ranges. Flexible discrete outputs operateas alarms or on/off controllers. As limit alarms,each discrete output can be configured with highand/or low setpoints exclusively tied to an analoginput channel. Alarm trips function without hostcommunication enabling low-cost stand-alonealarms, as well as local backup for the primarycontrol system. Otherwise, on/off control isbased on commands issued by the host system.

Combining flexible transmitter functions, mixedsignal I/O, alarm support, and a network inter-face in a single package, makes this instrumentextremely powerful. Multi-channel design addscost-efficiency and allows high-density mounting.Plus, safe, rugged construction makes thesemodules reliable for use in both control roomand distributed field I/O applications. Custommodule configurations are also possible (consultfactory for details).



n 16-bit sigma-delta A/D yields 0.1% of rangeresolution and accuracy

n Four inputs in a single inch-wide modulereduces system costs and saves panel space

n Four discrete outputs enable local limit alarmsor host-controlled on/off switching

n Heavy-duty 1A solid-state relays providedependable on/off control of industrial devices

n Self-calibration lowers maintenance costs byreducing periodic manual calibration checks


n Four-way isolation eliminates potential groundloops between power, input, output, andnetwork circuitry


Modbus

Four�DC Current�

or�DC Voltage�

Inputs RS-485


Isolation

Four�Discrete�Outputs�

or�Limit Alarms

Power

Outputs (4)Inputs (2)

Inputs (2)

DC Current/Voltage Input Module

TB1/TB2

IN+

IN-

Red

Black

1.35"

1.05"

0.375" dia.

5020-350

AC Current Sensor Model 5020-350

For 913MB. Order separately (one per channel).

Modbus/RS-485

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Performance Specifications

General InputResolution0.005% or 1 part in 20,000.

Noise Rejection Normal mode: 40dB @ 60Hz, typical. Common mode: 140dB @ 60Hz, typical.

Input Filter Bandwidth-3dB at 3Hz, typical.

Input Conversion Rate180ms per channel.

Current Input (913MB)DC Current Input RangesRange user-configured. Range selected applies to all channels. 0 to 1mA, 0 to 20mA, 4 to 20mA, 0 to 11.17mA (for use with 5020-350 AC sensor).

DC Current Input Resistance49.9 ohms.

DC Current Input Accuracy±0.1% of input range.

Voltage Input (914MB)DC Voltage Input RangesRange user-configured. Range selected applies to all channels. ±10V, ±5V, ±2.5V, ±1.25V, ±625mV, ±313mV, ±156mV, ±78mV

Input Impedance110.5K ohms.

DC Voltage Input Accuracy±0.1% of input range.

Discrete OutputOutput TypeFour independent open drain MOSFET switches with a common return that operate as low-side switches.

Output Voltage Range0 to 35V DC. External voltage source required.

Output Current Range0 to 1A DC continuous for each output.

Output OFF Leakage Current50µA maximum.


Output Response Time4.1ms typical, from receipt of command to gate transition of the output MOSFET.

OperationDigital outputs are set to their OFF state following a software or power-on reset. Outputs can optionally be set to user-defined states following a watchdog timeout. Watchdog timeout output control takes pre-cedence over limit alarm control. Alarm control takes precedence over host control.

CommunicationSupported Modbus CommandsThe command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions.

Read Coil (Output) Status Read Holding Registers Read Input Registers Force Single Coil (Output) Preset Single Register Force Multiple Coils (Output) Preset Multiple Registers Report Slave ID Reset Slave

LED IndicatorsLEDs indicate power, status, and discrete level/alarm.

Power and IsolationPower Requirements10 to 36V DC or 22 to 26V AC.

Supply CurrentSupply Current Draw 10V DC 125mA maximum 24V DC 50mA maximum 24V AC 100mA rms maximum

Isolation1500V AC for 60 seconds or 250V AC continuous. 4-way isolation between input, network, power, and discrete I/O circuits. Inputs are isolated channel-to-channel for common mode voltage to ±4V DC.

Ordering Information

Models913MB-0900 914MB-0900DC current (913MB) or voltage ( 914MB) input module

Accessories900C-SIPConfiguration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable)5020-350AC current sensor for 913MB. One for each channelTBK-B02Optional terminal block kit, barrier strip style, 4 pcs.TBK-S02Optional terminal block kit, spring clamp style, 4 pcs.PS5R-VB24 Power supply (24V DC, 2.1A)

TWO-WIRE TRANSMITTER

ANALOG INPUTCONNECTIONS

TB1/TB2

IN+

DCCURENT

(mA)

IN-

-

+TB1/TB2

IN+

IN-

DIG

ITA

LO

UT

PU

TS

4546

TB4

OUT3

RTN

DIGITAL OUTPUT

TB

4

RTN

OUT2

OUT1

4443

4236

41

TB3

OUT0

11

TB1

1213 IN0+

IN0-

1415

16

IN1+

IN1-

INP

UT

S0,1

TB221

IN3+

IN3-

2526

24 IN2-

23 IN2+

22

INP

UT

S2,3

D

COM

COM

D

RS

485

3334

3531

32

A

B

PW

R

TB

3

TB

1

ANALOGINPUT

ANALOGINPUT

TB

2

AC/DCPOWER

NETWORKCOMMUNICATION

CURRENT INPUT

VOLTAGESOURCE -

+ TB1/TB2

IN+

IN-

VOLTAGE INPUT

XMTR2-WIRE

-

+


UP TO 35V DC

MECHANICALRELAY INTERFACE

+

OUT 3

OUT

OUT 2

RTN

OUT 1

RTNTB4

OUT

RTN

DIGITAL OUTSHARESRETURN

RTN

OUT

10 TO 36V DCOR 24V ACNON-POLARIZED

8401-003

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917/918MBMulti-ChannelAnalog OutputModules

DC Current or DC Voltage Outputs

Discrete Outputs

Models917MB: 4 current output channels918MB: 4 voltage output channels

Analog Output917MB: 0 to 20mA, 4 to 20mA, 0 to 1mA DC918MB: 0 to 10V, 0 to 5V, 0 to 1V DC

Discrete OutputFour output channels:Open-drain MOSFETs (1A DC loads)0 to 35V DC


Power Requirement12 to 36V DC (917MB), 10 to 36V DC (918MB),24V AC


n DescriptionThese modules drive four analog output channelsand also feature four discrete outputs for on/offcontrol. Isolation separates the output, power,and network circuits. Network communicationadheres to the industry-standard RS-485 ModbusRTU protocol. AC and DC power sources aresupported with nonpolarized, diode-coupled terminals.

The analog outputs generate a signal based oncommunication from the host. They accommo-date wide DC voltage or current ranges.

Discrete outputs provide simple on/off switchingcapability (open-drain) for external devices.

Combining analog outputs, on/off controllers,and a network interface in a single package,makes this instrument extremely powerful. Multi-channel design adds cost-efficiency andallows high-density mounting. Plus, safe, ruggedconstruction make it reliable for both controlroom and distributed field I/O use in a broadrange of temperature control applications.Custom module configurations are also possible(consult factory for details).



n 12-bit D/A yields 0.1% of span resolution andaccuracy

n Four analog outputs in an inch-wide modulereduces system costs and saves panel space

n Four discrete outputs enable host-controlledon/off switching




n Three-way isolation eliminates potentialground loops between power, output, andnetwork circuitry


Modbus

Four�Analog�Outputs�

�DC Current�

or�DC Voltage

RS-485


Isolation

Four�Discrete�Outputs

Power

Outputs (4)Outputs (2)

Outputs (2)

Analog Output ModuleModbus/RS-485

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n Performance

n General Analog OutputResolutionSee current/voltage output specifications for moreinformation.

Ambient Temperature EffectBetter than ±0.001% of output span per °C, or±1.0uV/°C, whichever is greater.

Ambient TemperatureOperation (917MB): -25°C to 60°C* (-13°F to 140°F*).Operation (918MB): -25°C to 70°C (-13°F to 158°F).Storage: -40°C to +85°C (-40°F to +185°F).* Limit 917MB maximum ambient to 50°C (122°F)when using supply voltages less than 15V DC.

n Current Output (917MB)DC Current Output RangesRange user-configured. Range selected applies to allchannels. Output Range Resolution Accuracy (% span)0 to 1mA 0.554% ±2.0% (±0.002mA)0 to 20mA 0.028% ±0.1% (±0.02mA)4 to 20mA 0.035% ±0.1% (±0.02mA)

Maximum Output Current22.5mA DC typical.

Integral Non-Linearity±0.1% of span or ±2 LSB typical, whichever is larger,for spans equal to or greater than 16mA.

Output Compliance12V minimum, 12.7V typical.

Output Load Resistance Range0 to 630 ohms typical.

Response Time11ms typical into 500 ohms, for measurement toreach 98% of the final value in response to a stepcommand. Actual response time will vary with load.

n Voltage Output (918MB)DC Voltage Output RangesRange user-configured. Selection applies to all channels.Output Range Resolution Accuracy (% span)0 to 1V 0.274% ±0.6% (±6mV)0 to 5V 0.055% ±0.1% (±5mV)0 to 10V 0.027% ±0.1% (±10mV)

Maximum Output Voltage11.255V DC typical.

Integral Non-Linearity±0.1% of span or ±2 LSB typical, whichever is larger,for spans equal to or greater than 5V.

Output Current0 to 10mA DC maximum.

Output Impedance1 ohm.

Output Short Circuit ProtectionIncluded.

Response Time110µs rise time typical, 150µs fall time typical,unloaded, for output to reach 98% of the final valuein response to a step command. Time varies with load.

n Discrete OutputOutput TypeFour independent open drain MOSFET switches with acommon return that operate as low-side switches.

Output Voltage Range0 to 35V DC (up to 1A/channel continuous).External voltage source required.


OperationDigital outputs are set to their OFF state following asoftware or power-on reset. Outputs may be set touser-defined states following a watchdog timeout.Watchdog timeout output control takes precedenceover limit alarm control. Alarm control takes prece-dence over host control.


n CommunicationSupported Modbus CommandsThe command/response protocol for communicatingwith this module adheres to the Modbus/RTU standardfor the following Modbus Functions.

Read Coil (Output) Status Report Slave IDRead Holding Registers Reset SlaveRead Input RegistersForce Single Coil (Output)Preset Single Register Force Multiple Coils (Output)Preset Multiple Registers


n Power and IsolationPower Requirements10 to 36V DC (918MB), 12 to 36V DC (917MB)22 to 26V AC.

Supply CurrentSupply Current Draw (917) Current Draw (918)10V DC Not Recommended 100mA maximum12V DC 275mA maximum 85mA maximum24V DC 120mA maximum 45mA maximum24V AC 210mA rms max. 85mA rms max.

Isolation1500V AC for 60 seconds or 250V AC continuous. 3-way isolation between outputs, network, and powercircuits.


Models917MB-0900918MB-0900DC current (917MB) or voltage (918MB) output module

Accessories900C-SIPConfiguration Software Interface Package(includes software CD-ROM for Windows, RS-232/485converter, and RS-485/three-wire cable)4001-095USB-to-RS232 adapterTBK-B02Optional terminal block kit, barrier strip style, 4 pcs.TBK-S02Optional terminal block kit, spring clamp style, 4 pcs.PS5R-VB24Power supply (24V DC, 2.1A)

DC CURRENT OUTPUT

ANALOG OUTPUT CONNECTIONS D

IGIT

AL

OU

TP

UT

S

45

46

TB4

OUT3

RTN

DIGITAL OUTPUT

TB

4

RTN

OUT2

OUT1

44

43

42

36

41

TB3

OUT0

D

COM

COM

D

RS

48

5

33

34

35

31

32

A

B

PW

R

TB

3

TB

1

ANALOG�OUTPUT

ANALOG�OUTPUT

TB

2

AC/DC�POWER


DC VOLTAGE OUTPUT

TB1

I0+

RTN

12

11

AN

AL

OG

OU

TP

UT

S

13 RTN

I1+

RTN

14

15

AN

AL

OG

OU

TP

UT

S

16 RTN

TB2

21

22

I2+

RTN

I3+

RTN

23

24

RTN

26

25 RTN

TB1

V0+

RTN

12

11

AN

AL

OG

OU

TP

UT

S

13 RTN

V1+

RTN

14

15

AN

AL

OG

OU

TP

UT

S

16 RTN

TB2

21

22

V2+

RTN

V3+

RTN

23

24

RTN

26

25 RTN

TB1/TB2

+LR

I

TB1/TB2

+LR

WIRING CONNECTIONS SAME AS 913/914MB


I+

RTN

V+

RTN

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924MBMulti-ChannelTemperatureControl Modules

Thermocouple orMillivolt Input


Model924MB: 4 input channels

InputFour input channels:Thermocouple (types J, K, T, R, S, E, B, N),±100mV DC

OutputFour output channels:Open-drain MOSFETs (1A DC loads)0 to 35V DC




n DescriptionThis signal conditioner is a four-channel analoginput module with four discrete outputs. It filtersand linearizes thermocouple inputs while provid-ing isolation between input, output, power, andnetwork circuits. Cold junction compensationand upscale/downscale sensor break detectionare standard. AC and DC power sources are sup-ported with nonpolarized, diode-coupled termi-nals.

The programmable inputs accommodate eightthermocouple types plus wide-range millivolt signals. Flexible discrete outputs operate asalarms or on/off controllers. As limit alarms, eachdiscrete output can be configured with highand/or low setpoints exclusively tied to an analoginput channel. Alarm trips function without hostcommunication enabling low-cost stand-alonealarms as well as local backup for the primarycontrol system. Otherwise, on/off control isbased on commands issued by the host system.




n 16-bit sigma-delta A/D yields 0.1°C resolutionand 0.5°C measurement accuracy

n Thermocouple linearization and sensor breakdetection ensure reliable measurements

n Four discrete outputs enable local temperaturelimit alarms or host-controlled on/off switching




n Four-way isolation eliminates potential groundloops between power, input, output andnetwork circuitry


Modbus

Four�Thermocouple�

or�DC Millivolt�

Inputs RS-485


Isolation


or�Limit Alarms

Power


Inputs (2)

Thermocouple/Millivolt Input ModuleModbus/RS-485

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n Performance

n General InputResolution±100mV DC input: 0.1%.Thermocouple input: 0.1°C (0.18°F).

Ambient Temperature EffectBetter than ±0.005% of input span per °C, or±1.0uV/°C, whichever is greater.

Noise Rejection Normal mode: 40dB @ 60Hz, typical.Common mode: 140dB @ 60Hz, typical.


Input Conversion Rate90ms per channel.

n Thermocouple InputThermocouple Input RangesThermocouple type user-configured. Type selectedapplies to all channels. Signal linearization, cold-junc-tion compensation, and open circuit or lead breakdetection are included.TC °C Range (°F Range) AccuracyJ -210 to 760°C (-346 to 1400°F) ±0.5°CK -200 to 1372°C (-328 to 2502°F) ±0.5°CT -260 to 400°C (-436 to 752°F) ±0.5°CR -50 to 1768°C (-58 to 3214°F) ±1.0°CS -50 to 1768°C (-58 to 3214°F) ±1.0°CE -200 to 1000°C (-328 to 1832°F) ±0.5°CB 260 to 1820°C (500 to 3308°F) ±1.0°CN -230 to 1300°C (-382 to 2372°F) ±1.0°CNote 1: Accuracy is given with CJC switched off.

Relative inaccuracy with CJC enabled may increaseby ±0.5°C.

Thermocouple Break DetectionTC sensor failure can be configured for either upscaleor downscale. Selection applies to all channels.

n DC Millivolt InputMillivolt Input Ranges±100mV DC.

Millivolt Input Accuracy±0.1% of input range.

n Discrete OutputOutput TypeFour independent open drain MOSFET switches with acommon return that operate as low-side switches.

Output Voltage Range0 to 35V DC, 1A DC maximum for each output.External voltage source required.


OperationDigital outputs are set to their OFF state following asoftware or power-on reset. Outputs can optionally be set to user-defined states following a watchdogtimeout. Watchdog timeout output control takesprecedence over limit alarm control. Alarm controltakes precedence over host control.



Read CoilRead Holding RegistersRead Input RegistersForce Single CoilPreset Single Register Force Multiple CoilsPreset Multiple RegistersReport Slave IDReset Slave


n Power and IsolationPower Requirements10 to 36V DC,22 to 26V AC.

Supply CurrentSupply Current Draw10V DC 100mA maximum24V DC 45mA maximum24V AC 85mA rms maximum

Isolation1500V AC for 60 seconds or 250V AC continuous. 4-way isolation between input, network, power anddiscrete I/O circuits. Inputs are isolated channel-to-channel for common mode voltage to ±5V DC.


924MB-0900Thermocouple/millivolt input module900C-SIPConfiguration Software Interface Package(includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable)4001-095USB-to-RS232 adapterTBK-B01Optional terminal block kit, barrier strip style, 2 pcs.(Does not include terminal block for input wiring.)TBK-S02Optional terminal block kit, spring clamp style, 2 pcs.(Does not include terminal block for input wiring.)PS5R-VB24Power supply (24V DC, 2.1A)

TC INPUT

ANALOG INPUT CONNECTIONS

TB1/TB2

IN+

VOLTAGE

IN-

SOURCE -

+ TB1/TB2

IN+

IN-

DIG

ITA

LO

UT

PU

TS

45

46

TB4

OUT3

RTN

DIGITAL OUTPUT

TB

4

RTN

OUT2

OUT1

44

43

42

36

41

TB3

OUT0

11

TB1

12

CJ

C-0

13 IN0+

IN0-

14

15

16

IN1+

IN1-

INP

UT

S0,1

CJ

C-1

TB2

21

IN3+

IN3-

25

26

24 IN2-

23 IN2+

22

INP

UT

S2,3

D

COMCOM

D

RS

48

5

33

34

35

31

32

A

B

PW

R

TB

3

TB

1

ANALOG�INPUT

ANALOG�INPUT

TB

2

AC/DC�POWER


VOLTAGE INPUT


OUT 3

OUT 0

OUT 2

RTN

OUT 1

RTNTB4

OUT

RTN

DIGITAL OUT SHARES RETURN


UP TO 35V DC

MECHANICAL�RELAY INTERFACE

+

RTN

OUT

8400100.qxp 3/20/2006 3:18 PM Page 63

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932/934MBMulti-ChannelTemperatureControl Modules

RTD or ResistanceInput


Models932MB: 2 input channels, 2 relay outputs934MB: 4 input channels, 4 relay outputs

InputRTD (100 ohm Pt, 120 ohm Ni, 10 ohm Cu),Resistance (0 to 500 ohms)

OutputSolid-state relays, Form A, SPST-NO




n DescriptionThis signal conditioner is a dual or quad-channelanalog input module with one discrete/relay out-put per input channel and a Modbus interface. Itfilters and linearizes RTD or resistance inputswhile providing isolation between input, output,power, and network circuits. Lead wire compen-sation and upscale/downscale sensor breakdetection are standard. Low voltage AC and DCpower sources are supported with nonpolarized,diode-coupled terminals.

The programmable inputs accommodate fourRTD types plus wide-range resistance signals.Flexible discrete outputs operate as alarms oron/off controllers. As limit alarms, each discreteoutput can be configured with high and/or lowsetpoints exclusively tied to an analog inputchannel. Alarm trips function without host com-munication enabling low-cost stand-alone alarmsas well as local backup for the primary controlsystem. Otherwise, on/off control is based oncommands issued by the host system.




n 16-bit sigma-delta A/D yields 0.1°C resolutionand 0.25°C accuracy (Pt, Ni RTDs)

n RTD linearization and sensor break detectionensure reliable measurements

n Discrete relay outputs enable local temperaturelimit alarms or host-controlled on/off switching




n Four-way isolation eliminates potential groundloops between power, input, output andnetwork circuitry


Modbus

Four�RTD�

or�Resistance�

Inputs RS-485


Isolation


or�Limit Alarms

Power


Inputs (2)

RTD/Resistance Input ModuleModbus/RS-485

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n Performance

n RTD/Resistance InputInput RangesInput type user-configured. Type selected applies to allchannels. RTD linearization, lead wire compensation,and open circuit or lead break detection are included.Input Type Alpha Input Range AccuracyPt 100 ohm 1.3850 -200 to 850°C ±0.25°CPt 100 ohm 1.3911 -200 to 850°C ±0.25°CNi 120 ohm 1.6720 -80 to 320°C ±0.25°CCu 10 ohm 1.4272 -200 to 260°C ±1.00°CResistance linear 0 to 500 ohms ±0.05 ohm

ResolutionInput Type Alpha ResolutionPt 100 ohm 1.3850 0.1°CPt 100 ohm 1.3911 0.1°CNi 120 ohm 1.6720 0.1°CCu 10 ohm 1.4272 0.2°CResistance linear 7.8125 milliohms

Ambient Temperature EffectBetter than ±0.005% of input span per °C, or±1.0uV/°C, whichever is greater.

Noise Rejection Normal mode: 40dB @ 60Hz, typical.Common mode: 130dB @ 60Hz, typical.


Input Conversion Rate300ms per channel typical.

RTD Break DetectionSensor failure can be configured for either upscale ordownscale. Selection applies to all channels.

Excitation Current1mA DC typical, all types.

Lead-Wire CompensationInherent for 3-wire RTD. The maximum lead resistanceis 25 ohms per lead (Pt), 20 ohms per lead (Ni), 10ohms per lead (Cu). All lead wires must be of equalsize and length.

n Discrete OutputOutput TypeSolid-State Relay (SSR), one Form A (SPST-NO) switchper input channel. Outputs share a common returnconnection at the RTN terminals for low side switching

Output Voltage Range0 to 48V DC, 1A DC.



OperationDigital outputs are set to their OFF state following asoftware or power-on reset. Outputs can be set touser-defined states following a watchdog timeout.


Read Holding Registers Read CoilRead Input Registers Reset SlavePreset Single Register Report Slave IDForce Multiple Coils Force Single CoilPreset Multiple Register


n Power and IsolationPower Requirements10 to 36V DC (56mA max. at 24V DC).22 to 26V AC (94mA rms max. at 24V AC).



932MB-0900Two channel RTD/Resistance input module934MB-0900Four channel RTD/Resistance input module


ANALOG INPUT CONNECTIONS

DIGITAL OUTPUT

TB

4T

B3

TB

1

ANALOG�INPUT

ANALOG�INPUT

TB

2

AC/DC�POWER



RTN

OUT 0

OUT 2

OUT 1

RTN

OUT 3TB4

OUT

RTN



INL

IN-

IN+

IN+ IN+

INL

TB1/TB2

INL

IN-

TB1/TB2

IN-

TB1/TB2

JUMP

DECADE BOX

JUMP

2-WIRE RTD

3-WIRE RTD RESISTANCE

D

D

A

TB1 TB4

12 IN0-

45RTN

13 IN0L

44OUT2

15 IN1-

42RTN

16 IN1L

41OUT0

TB3

21 IN2+

36LRTN

23 INL2

34

24 IN3+

33

26 INL3

31

PW

R

B

1114

IN0+

IN1+

4643

OUT3

OUT1

22 IN2-

TB2

35COM

25 IN3-

32

934MB

On

ly

RS

485

RT

DIN

PU

TS

2,3

932MB

/934MB

DIG

. OU

TD

IG. O

UT

RT

DIN

PU

TS

0,1

UP TO 48V DC


+

RTN

OUT


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942MBFrequency/Pulse CounterModules

Periodic or PulseWaveform Input


Model942MB: 2 input channels

InputTwo input channels:0 to 50KHz in three selectable rangesAmplitudes up to 140V AC or 200V peakPulse counter range of 0 to 65535

OutputTwo output channels:Solid-state relays (1A DC loads)0 to 48V DC




n DescriptionThis signal conditioner is a two-channel analoginput module with discrete outputs and Modbuscommunication. It conditions periodic or pulsewaveform inputs and provides solid-state relaysfor limit alarms or ON/OFF control.

Versatile inputs accommodate many applicationsusing TTL, magnetic pickups, proximity sensors,or a variety of switches (high/low-side transistor,dry contact, open drain, open collector). Bipolarand unipolar waveforms are supported with aselectable input bias that accepts both zero andnon-zero crossing signals. Voltage threshold andrelative hysteresis are also user selectable.

Inputs may also function as event counters withseparate microcontrollers for each channel. Themodule counts pulses on the positive or negativeedge. It can wrap around to zero for continuouscounting, latch at a programmed count value(setpoint), or automatically reset itself to zeroafter reaching a setpoint value. Software controlsenable remote resets. A variety of filters helpremove noise, jitter, and other mechanical effectsto prevent false counts.

The discrete outputs can operate as independentalarms or provide on/off control regulated by thehost system. As limit alarms, each output can beset for high and/or low setpoints exclusively tiedto an analog input. These low cost modules areideal for standalone alarms as well as for localbackup of the primary control system.



n Separate microcontrollers on each channel forpulse counting and period measurement

n Solid-state relay outputs enable local limitalarms or host-controlled on/off switching

n Bipolar and unipolar input signal support

n Programmable pulse counter functions

n Input filtering functions include hysteresis,averaging, debounce, relay time delay, andalarm deadband controls

n 4-way isolation (input, output, power, network)

n Watchdog timers provide a failsafe output


Modbus

Two Frequency

or Pulse

Waveform Inputs

RS-485


Isolation

Two Discrete�Outputs�

or�Limit Alarms

Power


Frequency/Counter Module


Modbus/RS-485

8400100.qxp 3/20/2006 3:18 PM Page 66

8401-003


M o d b u s I / OM

odbus I/OBusW

orks ®

n Performance

n Frequency/Counter InputInput RangesInput type user-configured. Applies to both channels.Input Range Accuracy Accuracy over Temp.0 to 100Hz ±0.04Hz ±0.06Hz0 to 1000Hz ±0.4Hz ±0.6Hz0 to 50,000Hz ±10Hz ±15Hz0 to 65,535 pulses ±1 pulse ±1 pulse

Unipolar Input ConfigurationAmplitude: 0 to 3V minimum range, 0 to 200V peak maximum range.Threshold: Configurable for 1.5V or 5V, typical.Hysteresis: Configurable for ±25mV (at 1.5V thresh-old), or ±83mV (at 5.0V threshold), typical.

Bipolar (Zero-Crossing) Input ConfigurationAmplitude (0-20KHz): ±50mV minimum (with ±25mVhysteresis), or ±150mV minimum (with ±83mV hys-teresis), to ±200V peak maximum.Amplitude (Above 20KHz): ±100mV minimum (with±25mV hysteresis), or ±200mV minimum (with ±83mVhysteresis), to ±200V peak maximum.Threshold: 0mV nominal, 0.01V typical with ±25mVhysteresis; 0.03V typical with ±83mV hysteresis.Hysteresis: Configurable for ±25mV or ±83mV, typical.

Resolution0 to 100Hz input range: 0.01Hz0 to 1000Hz input range: 0.1Hz0 to 50,000Hz input range: 1HzPulse counter: 1 pulse

Minimum Input Pulse Width10µS (frequency input); 5mS (pulse input).

Counting Rate100Hz maximum counting rate(5mS ON and 5mS OFF for 10mS period or 100Hz).

Input Impedance35K ohms, typical.

Input Filter Bandwidth-3dB at 35kHz, typical.

Input Pullup/PulldownSoftware selectable 2.7K ohm input pullup to +5V anda 1K ohm input pulldown to return. The resistors mayalso be left floating (none).

Input Debounce0 to 1.375 seconds, configurable in 5mS increments.

Noise Rejection Common mode: 80dB @ 60Hz, typical with 100 ohminput unbalance.

n Discrete OutputOutput TypeSolid-State Relay (SSR), one Form A (SPST-NO) switchper input channel. Outputs share a common returnconnection at the RTN terminals for low-side switching

Output Voltage Range0 to 48V DC, 1A DC.



OperationDigital outputs are set to their OFF state following asoftware or power-on reset. Outputs can be set touser-defined states following a watchdog timeout.


Read Holding Registers Read CoilRead Input Registers Reset SlavePreset Single Register Report Slave IDForce Multiple Coils Force Single CoilPreset Multiple Registers


n Power and IsolationPower Requirements10 to 36V DC.22 to 26V AC.



942MB-0900Frequency/counter input module


FREQUENCY INPUT

ANALOG INPUT CONNECTIONS D

IGIT

AL

OU

TP

UT

S

45

46

TB4

DIGITAL OUTPUT

TB

4

RTN

OUT1

44

43

42

36

41

TB3

OUT0

11

TB1

12

FR

EQ

. INP

UT

0, 1

13 RTN

NC

14

15

16

FRQ1

RTN

D

COMCOM

D

RS

48

5

33

34

35

31

32

A

B

PW

R

TB

3

TB

1

ANALOG�INPUT

AC/DC�POWER



OUT 3

OUT 0

OUT 2

RTN

OUT 1

RTNTB4

OUT

RTN



FRQ0

RTN

FRQ1

RTN

FREQUENCYGENERATOR -

+

MAGNETICPICKUP -

+

HIGH-SIDE SWITCH�(Open Collector/Drain)

FRQ0

RTN

FRQ0RTN

FRQ0RTN

MAGNETIC INPUT

or

FRQ0

RTNor

V+V+V+V+

LOW-SIDE SWITCH�(Open Collector/Drain)

DRY CONTACT

FRQ0RTN

TTLV+V+V+

NC

FRQ0

UP TO 48V DC


+

RTN

OUT

TB1

8400100.qxp 3/20/2006 3:18 PM Page 67

8401-003

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Tel 248-295-0880 ■ [email protected] ■ www.acromag.com ■ 30765 Wixom Rd, Wixom, MI 48393 USA

Network Accessories: 4683 Series

Bulletin #8400-404E

DescriptionModels4683-TTM-1F: 115V AC Power 4683-TTM-2F: 230V AC Power 4683-TTM-3F: 24V AC Power

Acromag’s RS-485 network repeater device allows users to take full advantage of the RS-485 standard’s extended communication distances and multi-dropping capabilities. In addition, these devices offer field selectable End-of-Line Network (EOLN) terminations on both the A and B networks.

Operation is transparent to all devices and no handshaking is required. Up to thirty-two RS-485 devices can be driven. Network repeaters are ready to mount on any base plate. Or, for a harsh environment, it can be installed in a NEMA enclosure of your choice. No enclosure is necessary for use in a laboratory or office. Installation requires mounting, connecting power and cables, and setting the baud rate.

ApprovalsUL/cUL listed: Energy management equipment

Key Features & Benefits■ Designed for use with Johnson Controls

N2 or BACnet bus

■ No handshaking

■ No extra control lines

■ I/O signal isolation

■ Baud rates of 600, 1200, 2400, 4800, 9600, 19.2K, 38.4K, and 76.8K are switch selectable

■ Field-selectable end-of-line network terminations on both A and B sides

■ Electrical transient protection is provided. This protects the host computer from destructive noise spikes and other transient signals.

■ Status LED’s indicate transmission direction and power applied.

■ 24/115/230V AC power available

■ No separate transformer required with 24V AC units (4683-TTM-3F)

OperationModel 4683-TTM-xF network repeaters isolate and boost RS-485 signals allowing communication signals to travel another 4000 ft. Each repeater permits the addition of another 32 unit load to a network.

The repeater has two RS-485 “sides” known as the A and B sides. The A side typically connects to the network towards the host and the B side connects to the extended network. Functionally, the A and B sides are equivalent.

Repeaters receive AC power through a 3-screw terminal strip. Transient signal protection is provided on both RS-485 sides.

When both RS-485 lines are idle, each side is in receive mode. When a ‘1’ to ‘0’ transition is detected (signifying a start bit) on either side, the opposite side’s transmitter is enabled. The transmitter stays enabled for one character’s time (based on the baud rate switch setting). The received character is then passed through.

For N2 or BACnet MS/TP bus ◆ Drives up to 32 RS-485 devices ◆ Isolates and boosts signal up to 4000 ft.

4683-TTM RS-485 to RS-485 Network Repeater

D DD COMDCOM

RS-485SIDE B

BAUDRATE

GW

L2 G

FAULTA

FAULTB

AC (HI)

StatusLEDs

PWR

GROUND

L1

L1 RS-485SIDE A

AC (LO)NETWORK CONNECTIONS

4683-TTM-1F (115VAC)

4683-TTM-2F (230VAC)

4683-TTM-3F (24VAC) GCOMHOT

1 - 6002 - 12003 - 24004 - 4800

5 - 96006 - 19.2K7 - 38.4K8 - 76.8K

RS

-485

SID

E B

24V

DC

RT

N

CO

M

DD DRT

RT _

24V

DC

RS

-485

SID

E A C

OM

DRT

RT _ NC

S1

1 2 3 4 5 6 7 8

TXA - B

TXB - A

StatusLEDs

Baud RateSwitches

ACInput TB1TB2

TB3

ON


All trademarks are property of their respective owners. Copyright © Acromag, Inc. 2019. Data subject to change without notice. Printed in USA 10/2019



Acromag, Inc. Phone: (248) 295-0880 � Fax: (248) 624-9234 - 4 - � E-mail: [email protected] � On-Line: http://www.acromag.com

The station configuration drawing is for general illustration purposes only. Johnson Controls system customers should instead refer to the Metasys® Network Technical Manual for N2 Bus Communication, or the MS/TP Communication Bus Technical Bulletin for wiring connections using the 4683-TTM-xF repeater.

R

R

R

R

T D

3 2 6 5 8

D

R R R R

3 2 5

2 3 4 5 7 8 10 11 12 13

6 7 8 9

14 15 17 18 20 22 23 25

R

R R COM

TX B - A

R

COM 24VDC 24VDC

1 4

1 6 9

16 19 21 24

2 3

T D

1 4 7

T T D

W L2

POWER FAULT A BAUD

RATE

RS-485 SIDE A

A-N3

S1

NC R RS-485 SIDE B

TX A - B FAULT

B

RTN

OR

C

A

COM

TX RX

TX RX

5 COM

TX RX

7

3

DSR

RX RTS

G

L1

G

L1

G

A-N2

B 2

CD

CTS

TX

AC (LO)

-1 OPTION 115VAC

RED POWER LED

AC (LO) COM AC (LO)

-3 OPTION 24VAC

3 - 24004 - 4800

7 - 38.4K 8 - 76.8K

S1 - BAUD RATE1 - 600 5 - 9600

1 - 600 5 - 96002 - 1200 6 - 19.2K 3 - 2400 7 - 38.4K 4 - 4800 8 - 76.8K

B-N1 NC A-N32

A-N31

RS232 C

B A

HOST DE9

COM

DB25

Ground

AC (HI)

acromag

Ground

AC (HI)

Ground

HOT AC (HI)

ANY RS485 DEVICES

S1 - SET BAUD RATETO MATCH BAUDRATE OF NETWORK.

2 - 1200 6 - 19.2K

RS485 REPEATERMODEL 4683-TTM-X

RS485

A-N30

B-N2 B-N3

RS485

B-N4 B-N5

UP TO 32NODES PERNETWORKSEGMENT

B-N32

COM

SIGNALS ATCONVERTER

HOST

RED RS485 FAULT LED (SIDE A) TRANSMIT DIRECTION B-TO-A & A-TO-B

-2 OPTION 230VAC

DE9

DB25

TO HOST

CONNECTIONS TO HOST COMPUTER

HOST PC

RED RS485 FAULT LED (SIDE B)

NOTE: SIDE-A AND SIDE-B EOLTERMINATION JUMPERS ENABLED

UP TO 32 NODES PERNETWORKSEGMENT

120 OHM TERMINATION RESISTOR REQUIRED AT END OF NETWORK OR LAST DEVICE ONLY

IMPORTANT: MODEL 4683-TTM-X UNITS INCLUDE INTERNAL, FIELD SELECTABLE END-OF-LINE (EOL) TERMINATION RESISTORS FOR THE A AND B SIDES. THESE ARE ENABLED VIA INTERNAL JUMPERS. DO NOT USE EXTERNAL TERMINATION WITH INTERNAL EOL JUMPERS ENABLED.

SEE UNIT LABEL TO VERIFY POWER REQUIREMENTS

NOTE: JUMPERED PINS ARE NULL-MODEM CONNECTIONS WHICH ALLOW COMMUNICATION BETWEEN THE HOST AND ACROMAG SERIES 4100/4200 I/O STATIONS.

EXTENDED NETWORK

ANY RS-485 DEVICE

MODEL 4683-TTM-XF REPEATER SYSTEM CONNECTIONS

RS485Converter





3 2 1

J4

2

J1

2 2

J2

23

D

S1

D D

3 2 1

3

1

3

1

3

1

J4

1

8 67

J2J1

5 34 2 1

J3

J2

J4J3

2

J1

COM D COM

32

F1

Vcc

D

D

EOLDISABLED

EOLDISABLED

3

1

RS-485SIDE B

J3

TXA - B

FAULT B

1

TXB - A

BAUDRATE

G W

L2G

FAULT A

AC (HI)

FUSE 3AG0.5A, 250V

StatusLEDs

StatusLEDs

1200 OHMS

PWR

220 OHMS

1200 OHMS

JUMPER PAIR(ONE SIDE)

EOL ENABLED

EOL JumpersSide B (OUT)

EOL ENABLED

EOL JumpersSide A (IN)

GROUND

L1

L1RS-485SIDE A

EOL JUMPERSEQUIVALENT CIRCUIT(4683 UNITS ONLY)

AC (LO)

NETWORK CONNECTIONS

REMOVE THIS SCREW ON EACHSIDE TO REMOVE COVER

Baud RateSwitches

G COM HOT

1 - 6002 - 12003 - 24004 - 4800

5 - 96006 - 19.2K7 - 38.4K8 - 76.8K

MODEL 4683-TTM-1F REPEATERMODEL 4683-TTM-2F REPEATERMODEL 4683-TTM-3F REPEATEREnd-of-Line (EOL) Termination Jumper Locations.Input Power Fuse Location.

RS

-485S

IDE

B

24V D

C

RT

N

CO

M

D DD RT

RT

_

24V D

C

RS

-485S

IDE

ACO

M

D RT

RT

_NC

4683-TTM-1F (115VAC)

4683-TTM-2F (230VAC)

4683-TTM-3F (24VAC)

NOTE:-3F 24V AC units do not require aseparate transformer. 24V AC powerfrom the RS-485 devices may be used.

T

21

S1

543 876

T TD D NC R R D

COM

RTN

24VD

C

4.30

2.10

TYP

0.30

3.70

BAUDRATE

T

(53.34)

(7.62)

(93.98) acromag

FAULT A

6.40

7.0

R R

RS-4

85SI

DE A

TXB - A

COM

RS-4

85SI

DE B

FAULT B

TXA - B

D

24VD

C

(177.80)

TYP

0.30

POWER

(109.22)

(162.56) (7.62)

1 - 6002 - 12003 - 24004 - 4800

5 - 96006 - 19.2K7 - 38.4K8 - 76.8K

Switch Variation Switch Operation

Slide Switch Slide with arrow to turn ON.

Slide opposite to arrow to turn Off.

Toggle Switch Depress toward numbers to turn On (Closed).

Depress toward OPEN to turn Off.



Network Accessories: 4683 Series4683-TTM RS-485 to RS-485 Network Repeater

Performance Specifications

■ Communication SpecificationsBaud RatesSwitch settings on unit for 600, 1200, 2400, 4800, 9600, 19.2K, 38.4K, and 76.8K baud rates. Switch must be in the proper baud rate position for proper operation.RS-485 Bus LoadingOne unit load equivalent.RS-485 Bus DriveComplete RS-485 compliance for up to 32 unit loads (31 unit loads if a repeater is used).End-of-Line Termination NetworkThe EOLN termination network is shown on the right and is individually selected on both the A and B sides by a pair of shorting clips. The A-side is controlled by jumper pair J1, J2 and the B-side is controlled by jumper pair J3 and J4.The EOLN termination network is enabled for the A side or B side when the associated pair of jumpers are positioned over pins 1 and 2. Conversely, the EOLN is disabled (out of the circuit) when the pair jumpers are positioned over pins 2 and 3.DuplexHalf duplex only.Data FormatTen bits typical (1 start bit, 8 data bits, and 1 stop bit). Other formats are supported.

■ SpecificationsPower Line Fuse0.5A, 125V, 0.75A, 3AG type.IsolationProvides galvanic and opto-coupler isolation between RS-485(A), RS-485(B), AC power, and chassis ground. Common mode voltages are permitted up to 250V rms or 354V DC (withstands a 1500V AC dielectric strength test for 1 min. without breakdown) on a continuous basis. Complies with requirements outlined in ANSI C39.5-1974 for voltage ratings specified.RFI ResistanceWithstands an RFI field strength of 10V per meter at 27 Mhz, 151 Mhz, and 467 Mhz with no digital effect, per SAMA PMC 33.1.Line Noise EffectsField and power line terminals withstand ANSI/IEEE C37.90-1978 Surge Withstanding Capability (SWC) Test with no component failures. Unit is tested to a standardized test waveform that is representative of surges (high-frequency transient electrical interference), observed in actual installations.Communications ConnectionsNetwork repeater - both RS-485 connectors use modular terminal blocks with screw clamps. Wire range 14 to 26 AWG.Power Wire ConnectionsNetwork repeater terminal block. See label on unit for power to be applied to unit.Shipping Weight3.0 pounds (1.4 kg) packed per unit

■ EnvironmentalOperating Temperature-25 to 70° C (-13 to 158° F)Storage Temperature-25 to +85° C (-13 to 185° F)Relative Humidity0 to 95% RH (noncondensing), up to 40° C (104° F)Power4683-TTM-1F 115VAC ±10%, 50/60 Hz, 0.05A4683-TTM-2F 230VAC ±10%, 50/60 Hz, 0.03A4683-TTM-3F 24VAC ±10%, 50/60 Hz, 0.18A typicalApprovalsUL/cUL listed – energy management equipment

Ordering Information

Models4683-TTM-1F115V ACPower4683-TTM-2F230V ACPower4683-TTM-3F24V ACPower

AccessoriesSee www.acromag.com for more information.

3 2 1D

3 2 1D

1200Ohms

1200Ohms

220Ohms

https://www.acromag.com/shop/signal-conditioning-network-i-o/network-repeaters/4683-rs485-to-rs485-network-repeater/



https://www.acromag.com/

Tel: 877-214-6267 ■ [email protected] ■ www.acromag.com ■ 30765 S Wixom Rd, Wixom, MI 48393 USA

Bulletin #8400-568c

DescriptionAcromag’s configuration software is the key to the I/O modules’ easy-to-use operation. The software employs the friendly Windows® interface with pull-down selection menus and fill-in-the-blank fields to speed you through a few brief configuration screens. No programming is required.

This package includes the Configuration Software, an RS232-to-485 Serial Port Converter, RS485 Signal Cable, and an USB to Serial adapter. These components provide everything you need to set up a Series 900 I/O module from your desktop PC before installing it on the network.

Software Compatibility

Windows® XP or newer.

Ordering InformationNOTE: For more information, visit www.acromag.com.

Models900C-SIPConfiguration Software Interface Package. Includes user manual, CD, non-isolated RS232-to-RS485 serial port converter (5034-214), RS485 cable (5034-202), and USB adapter (4001-095).4001-095USB-to-DB9 serial port (RS232) adapter. (Doesn’t support Windows® XP)5034-186Configuration software on CD-ROM.5034-202RS485 to 3-wire cable converter and cable, DB-9M to 3 x 12AWG RS485 cable, 8 ft.5034-214Non-isolated RS232-to-RS485 serial port converter, RS232 port-powered, DB-9F to DB-9F.

Connection DiagramSee following page.

Configuration Software ◆ USB-to-RS232 Adapter ◆ RS232-to-RS485 Adapter ◆ Interface Cable

Model 900C-SIP Configuration Software Interface Package

Series 900MB Modbus RTU I/O

For Windows®

877.214.6267



https://www.acromag.com/shop/signal-conditioning-network-i-o/modbus-rtu-io-modules/modbus-rtu-software-support/5034-186-configuration-software-cd-rom/

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https://www.acromag.com/shop/signal-conditioning-network-i-o/ethernet-io-modules/5034-214-rs232-to-rs485-serial-port-converter/

Tel: 877-214-6267 ■ [email protected] ■ www.acromag.com ■ 30765 S Wixom Rd, Wixom, MI 48393 USA

All trademarks are property of their respective owners. Copyright © Acromag, Inc. 2019. Data subject to change without notice. Printed in USA 5/15/19

Series 900MB Modbus RTU I/O

RS

-232

RS

-485

900C-SIP COMMUNICATION CONNECTIONS

6 FEET OF CABLE

USB MALE

DB9 MALE

RS232

USB SERIAL CONVERTER 4001-095

LED

TO HOST USB PORT

OR

HOSTUSB

TO HOST RS232 SERIAL PORT

HOSTRS232

DB9MALE

HOST RS232 SERIALPORT CONNECTOR ORUSB CONNECTOR ATBACK OF PC

CONNECT THE RS232SIDE OF CONVERTERTO THE PC

CONNECT THE RS485SIDE OF CONVERTERTO THE CABLE

RS232 TO RS485 SERIALCONVERTER(MODEL 5034-214)

DB9 FEMALE DB9 FEMALE

PC RUNNINGACROMAGMODBUS CONFIGSOFTWARE

INSTALL MODBUS CONFIGURATION SOFTWARE

WINDOWS-BASED PERSONAL COMPUTER

THE RS232-to-RS45 PORT-POWERED CONVERTER 5034-214IS INTENDED FOR CONFIGURATION PURPOSES FOR ONEDEVICE. IT IS NOT SUITABLE FOR DRIVING A FULLY LOADEDRS485 NETWORK. THE USE OF AN EXTERNALLY POWEREDRS485 CONVERTER IS RECOMMENDED FOR DRIVING MULTIPLEDEVICES OF AN RS485 NETWORK.

2

0

R

ST

TB1

12

45 44

15

42 41

TB2

23

34

BC

26

31

DFT

D

D D

A

B

A

TB4

TB3

3

1

RUN

11 13 14

46 43

2221

36 35

25

32

TB1

Acromag

RS

-232

TB1

RS485

TB4

COM

A

TB2

PWR

B

TB3

RS

-485

RED

COM

D

D

RS-485TB4

CO

M

CO

M

16 24

33

5034-202

STATUS LED (YELLOW)RUN/PWR LED (GREEN)

D C

WIRE

CABLE 5034-202

ANY 900MB MODULE

GREEN

BLACK

CONNECT WIRES AS SHOWN

COLOR

ANY 900MB MODULE

CONNECT THE RS232SIDE OF CONVERTERTO THE PC

CONNECT THE RS485SIDE OF CONVERTERTO THE CABLE

RS232 TO RS485 SERIALCONVERTER(MODEL 5034-214)

CAUTION: DO NOT CONNECT THECABLE DIRECTLY TO THE PC WITHOUTTHE CONVERTER, OR DAMAGE TOTHE MODULE MAY RESULT.

DEFAULT MODE SWITCH -PUSH FOR DEFAULT MODE

STATUS LED FLASHES INDEFAULT MODE

REFER TO THE USER'S MANUALTHAT CAME WITH YOUR MODULETO COMPLETE THE MODULE'SPOWER AND I/O CONNECTIONS

DB9 MALEDB9 FEMALE DB9 FEMALE

Documents

MODBUS-RTU: REMOTE I/O - Acromag