Omega Engineering OM5-C Manuale utente

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FAX: (33) 130-699-120

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Tel: 49 (07056) 3017

Toll Free in Germany: 0130 11 21 66

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FAX: 49 (07056) 8540

United Kingdom: 25 Swannington Road,

Broughton Astley, Leicestershire,

LE9 6TU, England

Tel: 44 (1455) 285520

FAX: 44 (1455) 283912

P.O. Box 7, Omega Drive,

Irlam, Manchester,

M44 5EX, England

Tel: 44 (161) 777-6611

FAX: 44 (161) 777-6622

Toll Free in England: 0800-488-488

e-mail: [email protected]

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that

apply. OMEGA is constantly pursuing certification of its products to the European New Approach

Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts

no liability for any errors it contains, and reserves the right to alter specifications without notice.

WARNING: These products are not designed for use in, and should not be used for, patient connected applications.

GENERAL DESCRIPTION .............................................................................................................. 2

OM5 SELECTION GUIDE ............................................................................................................... 2

ANALOG VOLTAGE INPUT MODULES, NARROW BANDWIDTH: OM5-IMV/IV ....................... 4

ANALOG CURRENT INPUT MODULES: OM5-II .......................................................................... 6

TRUE RMS INPUT MODULES: OM5-IAC ..................................................................................... 8

LINEARIZED 2- OR 3-WIRE RTD INPUT MODULES: OM5-IP/IC/IN .............................................. 10

LINEARIZED 4-WIRE RTD INPUT MODULES: OM5-IP4/IC4/IN4.............................................. 12

POTENTIOMETER INPUT MODULES: OM5-PT ......................................................................... 14

THERMOCOUPLE INPUT MODULES: OM5-ITC ........................................................................ 16

STRAIN GAGE INPUT MODULES, WIDE BANDWIDTH: OM5-WBS ....................................... 16

ANALOG CURRENT OUTPUT MODULES: OM5-IVI ................................................................. 20

ANALOG VOLTAGE INPUT MODULES, WIDE BANDWIDTH: OM5-WMV/WV ....................... 22

2-WIRE TRANSMITTER INTERFACE MODULES: OM5-TX ............................................................ 24

GENERAL PURPOSE INPUT MODULES, DC EXCITATION: OM5-DT .................................... 26

FREQUENCY INPUT MODULES: OM5-IFI ................................................................................ 28

LINEARIZED THERMOCOUPLE INPUT MODULES: OM5-LTC ...................................................... 30

VOLTAGE OUTPUT MODULES, 50mA DRIVE CAPACITY: OM5-AV ...................................... 32

DIMENSIONS AND ACCESSORIES ............................................................................................ 34

TABLE OF CONTENTS

OM5-WMV/WV

Analog Voltage Input Modules, Wide Bandwidth

FEATURES

●ACCEPTS MILLIVOLT AND VOLTAGE LEVEL SIGNALS

●HIGH LEVEL VOLTAGE OUTPUTS

●1500Vrms TRANSFORMER ISOLATION

●

ANSI/IEEE C37.90.1-1989

TRANSIENT PROTECTION

●INPUT PROTECTED TO 240VAC CONTINUOUS

●100dB CMR

●10kHz SIGNAL BANDWIDTH

●±0.05% ACCURACY

●±0.02% LINEARITY

●±1µV/°C DRIFT

● CSA CERTIFIED, FM APPROVED, CE COMPLIANT

●MIX AND MATCH OM5 TYPES ON BACKPANEL

FIGURE 1. OM5-WMV/WV Block Diagram.

DESCRIPTION

Each OM5 wide bandwidth voltage input module provides a single channel

of analog input which is amplified, isolated, and converted to a high level

analog voltage output (Figure 1). This voltage output is logic-switch

controlled, allowing these modules to share a common analog bus without

the requirement of external multiplexers.

The OM5 modules are designed with a completely isolated computer side

circuit which can be floated to ±50V from Power Common, pin 16. This

complete isolation means that no connection is required between I/O

Common and Power Common for proper operation of the output switch. If

desired, the output switch can be turned on continuously by simply

connecting pin 22, the Read-Enable pin to I/O Common, pin 19.

The input signal is processed through a pre-amplifier on the field side of

the isolation barrier. This pre-amplifier has a gain-bandwidth product of

5MHz and is bandwidth limited to 10kHz. After amplification, the input

signal is chopped by a proprietary chopper circuit. Isolation is provided by

transformer coupling, again using a proprietary technique to suppress

transmission of common mode spikes or surges. The module is powered

from +5VDC, ±5%.

A special input circuit provides protection against accidental connection of

power-line voltages up to 240VAC.

Anti-Aliasing

Filter

+In

–In

–EXC

Backpanel

Term Block

Surge

Suppression

and

Protection

Isolated

Field-Side

Power

+EXC

–V

LPF

Power

Oscillator

Isolated

Computer-Side

Power

OUT

I/O Common

RD EN\

+5V

16 Power Common

Isochopper™

Amplifier

Pat Pending

Module OM5-WMV OM5-WV

Input Range ±10mV to ±100mV ±1V to ±40V

Input Bias Current ±0.5nA ±0.05nA

Input Resistance

Normal 200MΩ650kΩ(minimum)

Power Off 40kΩ650kΩ(minimum)

Overload 40kΩ650kΩ(minimum)

Input Protection

Continuous 240Vrms Max *

Transient ANSI/IEEE C37.90.1-1989 *

CMV, Input to Output

Continuous 1500Vrms max *

Transient ANSI/IEEE C37.90.1-1989 *

CMR (50Hz or 60Hz) 100dB *

NMR (–3dB at 10kHz) 120dB per Decade above 10kHz *

Accuracy(1) ±0.05% Span ±10µV RTI(2) ±0.05%(VZ

(3))±0.05% span ±0.2mV RTI(2)

±0.05% (VZ

(3))

Nonlinearity ±0.02% Span *

Stability

Input Offset ±1µV/°C±20µV/°C

Output Offset ±40µV/°C*

Gain ±25ppm/°C±50ppm/°C

Noise

Input, 0.1 to 10Hz 0.4µVrms 2µVrms

Output, 100kHz 10mVp-p *

Bandwidth, –3dB 10kHz *

Rise Time, 10 to 90% Span 35µs*

Settling Time, to 0.1% 250µs*

Output Range ±5V or 0V to +5V *

Output Resistance 50Ω*

Output Protection Continuous Short to Ground *

Output Selection Time 6µs at Cload = 0 to 2000pF

(to ±1mV of VOUT )*

Output Current Limit ±8mA *

Output Enable Control

Max Logic “0” +0.8V *

Min Logic “1” +2.4V *

Max Logic “1” +36V *

Input Current, “0”, “1” 0.5µA*

Power Supply Voltage +5VDC ±5% *

Power Supply Current 30mA *

Power Supply Sensitivity ±2µV/% RTI(2) ±200µV/% RTI(2)

Mechanical Dimensions 2.28" x 2.26" x 0.60" (58mm x 57mm x 15mm) *

Environmental

Operating Temp. Range –40°C to +85°C*

Storage Temp. Range –40°C to +85°C*

Relative Humidity 0 to 95% Noncondensing *

Emissions EN50081-1, ISM Group 1, *

Class A (Radiated, Conducted)

Immunity EN50082-1, ISM Group 1, Class A (ESD, RF, EFT) *

ORDERING

INFORMATION

SPECIFICATIONS Typical at TA= +25°C and +5V Power.

* Same specification as OM5-

WMV.

NOTES: (1) Includes nonlinearity,

hysteresis and repeatability.

(2) RTI = Referenced to input.

(3) VZis the input voltage

that results in 0V output.

MODEL INPUT RANGE OUTPUT RANGE

OM5-WMV-10A-C –10mV to +10mV –5V to +5V

OM5-WMV-50A-C –50mV to +50mV –5V to +5V

OM5-WMV-100A-C –100mV to +100mV –5V to +5V

OM5-WMV-10B-C –10mV to +10mV 0V to +5V

OM5-WMV-50B-C –50mV to +50mV 0V to +5V

OM5-WMV-100B-C –100mV to +100mV 0V to +5V

OM5-WV-1A-C –1V to +1V –5V to +5V

OM5-WV-5A-C –5V to +5V –5V to +5V

OM5-WV-10A-C –10V to +10V –5V to +5V

OM5-WV-1B-C –1V to +1V 0V to +5V

OM5-WV-5B-C –5V to +5V 0V to +5V

OM5-WV-10B-C –10V to +10V 0V to +5V

OM5-WV-20A-C –20V to +20V –5V to +5V

OM5-WV-20B-C –20V to +20V 0V to +5V

OM5-WV-40A-C –40V to +40V –5V to +5V

OM5-WV-40B-C –40V to +40V 0V to +5V

OM5-TX

2-Wire Transmitter Interface Modules

ter. This allows a 2-wire loop powered transmitter to be directly connected

to the module without requiring an external power supply. The regulated

supply will provide a nominal +20VDC at a loop current of 4mA to 20mA.

The OM5-TX will provide a 1500V isolation barrier for non-isolated 2-wire

field transmitters. It can also be used when additional isolation is required

between an isolated 2-wire transmitter and the input stage of the control

room computer.

The voltage output is logic switch controlled, which allows these modules

to share a common analog bus without the requirement of external

multiplexers.

The modules are designed with a completely isolated computer side circuit

which can be floated to ±50V from Power Common, pin 16. This complete

isolation means that no connection is required between I/O Common and

Power Common for proper operation of the output switch. If desired, the

output switch can be turned on continuously by simply connecting pin 22,

the Read-Enable pin to I/O Common, pin 19.

A precision 20Ωcurrent conversion resistor is supplied with the module.

Sockets are provided on the OM5-BP backpanels to allow installation of

this resistor. Extra resistors are available under part number OMX-1362-C.

All field inputs are fully protected from accidental connection of power-line

voltages up to 240VAC. The module has a 3dB bandwidth of 100Hz. Signal

filtering is accomplished with a six-pole filter, with two poles on the field

side of the isolation barrier, and the other four on the computer side.

FIGURE 1. OM5-TX Block Diagram.

FEATURES

●ISOLATED +20VDC CURRENT LOOP SUPPLY

●PROVIDES ISOLATION FOR NON-ISOLATED 2-WIRE

TRANSMITTERS

●HIGH LEVEL VOLTAGE OUTPUT: +1V to +5V or +2V to +10V

●

1500Vrms TRANSFORMER ISOLATION

●ANSI/IEEE C37.90.1-1989 TRANSIENT PROTECTION

●INPUT PROTECTED TO 240VAC CONTINUOUS

●100dB CMR

●100Hz SIGNAL BANDWIDTH

●±0.05% ACCURACY

●±0.02% LINEARITY

● CSA CERTIFIED, FM APPROVED, CE COMPLIANT

●MIX AND MATCH OM5 TYPES ON BACKPANEL

DESCRIPTION

Each OM5-TX 2-wire transmitter interface module provides a single chan-

nel which accepts a 4 to 20 mA process current input and provides a

standard +1 to +5V or +2 to +10V output signal (Figure 1). An isolated

+20VDC regulated power supply is provided to power the current transmit-

LPF

+In

–In

–EXC

Backpanel

Term Block

Surge

Suppression

and

Protection

Isolated

Field-Side

Power

Isochopper™

Amplifier

Pat Pending

+EXC

–V

–V+V

Isolated

Computer-Side

Power

LPF V

OUT

I/O Common

RD EN\

Power

Oscillator

+5V

16 Power

Common

2-Wire

Transmitter

Ω

0.1% plug-in

OMX-1362-C

Isolated

Excitation

Source

SPECIFICATIONS Typical at TA= +25°C and +5V power.

ORDERINGINFORMATION

MODEL INPUT RANGE OUTPUTRANGE

OM5-TX-1-C 4mA to 20mA +1V to +5V

OM5-TX-2-C 4mA to 20mA +2V to +10V

NOTES: (1) Includes nonlinearity, hysteresis and repeatability.

(2) RTI = Referenced to input.

SCM5B

Module OM5-TX

Input Range 4mA to 20mA

Input Resistor

Value 20.00Ω

Accuracy ±0.1%

Stability ±10ppm/°C

Loop Supply Voltage Nominal 20V at 4mA to 20mA

Isolated Excitation Protection

Continuous 240Vrms max

Transient ANSI/IEEE C37.90.1-1989

Input Protection

Continuous 240Vrms max

Transient ANSI/IEEE C37.90.1-1989

CMV, Input to Output

Continuous 1500Vrms max

Transient ANSI/IEEE C37.90.1-1989

CMR (50 or 60Hz) 100dB

NMR (–3dB at 100Hz) 120dB per decade above 100Hz

Accuracy(1) ±0.05% span ±4µA RTI(2)

Nonlinearity ±0.02% span

Stability

Input Offset ±1µV/°C

Output Offset ±40µV/°C

Gain ±25ppm/°C of reading

Noise

Input, 0.1 to 10Hz 10nArms

Output, 100KHz 500µVrms

Bandwidth, –3dB 100Hz

Response Time, 90% span 4mS

Output Range +1V to +5V or +2V to +10V

Output Resistance 50Ω

Output Protection Continuous short to gnd

Output Selection Time 6µs at Cload = 0 to 2000pF

(to ±1mV of VOUT)

Output Current Limit +8mA

Output Enable Control

Max Logic “0” +0.8V

Min Logic “1” +2.4V

Max Logic “1” +36V

Input Current, “0, 1” 0.5µA

Power Supply Voltage +5VDC ±5%

Power Supply Current 180mA at transmitter load of 20mA

100mA at transmitter load of 4mA

Power Supply Sensitivity ±10µV/% RTI(2)

Mechanical Dimensions 2.28" x 2.26" x 0.60" (58mm x 57mm x 15mm)

Environmental

Operating Temp. Range –40°C to +85°C

Storage Temp. Range –40°C to +85°C

Relative Humidity 0 to 95% noncondensing

Emissions EN50081-1, ISM Group 1, Class A (Radiated, Conducted)

Immunity EN50082-1, ISM Group 1, Class A (ESD, RF, EFT)

OM5-DT

General Purpose Input Modules, with DC Excitation

controlled, which allows these modules to share a common analog bus

without the requirement of external multiplexers.

The modules are designed with a completely isolated computer side circuit

which can be floated to ±50V from Power Common, pin 16. This complete

isolation means that no connection is required between I/O Common and

Power Common for proper operation of the output switch. If desired, the

output switch can be turned on continuously by simply connecting pin 22,

the Read-Enable pin to I/O Common, pin 19.

The OM5-DT can interface to devices which require a precision 10VDC

excitation supply. The 1kHz bandwidth significantly reduces ripple and

noise inherent in these devices.

Transducer excitation is provided from the module by a very stable 10V

source. The excitation supply is fully isolated, allowing the amplifier inputs

to operate over the full range of the excitation voltage. This feature offers

significant flexibility in real world applications. Eight full scale input ranges

are provided, from ±1V to ±10V, producing ±5V full scale output.

The input signal is processed through a pre-amplifier on the field side of

the isolation barrier. This pre-amplifier has a gain-bandwidth product of

5MHz and is bandwidth limited to 1kHz. After amplification, the input signal

is chopped by a proprietary chopper circuit. Isolation is provided by

transformer coupling, again using a proprietary technique to suppress

transmission of common mode spikes or surges. The module is powered

from +5VDC, ±5%.

Special input circuits provide protection of the signal inputs and the

isolated excitation supply up to 240VAC.

FIGURE 1. OM5-DT Block Diagram.

FEATURES

●INTERFACES TO DC DISPLACEMENT TRANSDUCERS AND OTHER

DEVICES REQUIRING A STABLE DC SUPPLY

●HIGH LEVEL VOLTAGE OUTPUTS

●

1500Vrms TRANSFORMER ISOLATION

●ANSI/IEEE C37.90.1-1989 TRANSIENT PROTECTION

●INPUT PROTECTED TO 240VAC CONTINUOUS

●FULLY ISOLATED EXCITATION SUPPLY

●100dB CMR

●1KHz SIGNAL BANDWIDTH

●±0.10% ACCURACY

●±0.02% LINEARITY

●±20µV/°C DRIFT

● CSA CERTIFIED, FM APPROVED, CE COMPLIANT

●MIX AND MATCH OM5 TYPES ON BACKPANEL

DESCRIPTION

Each OM5-DT general purpose input module provides a single channel of

transducer input which is filtered, isolated, scaled, and converted to a high

level analog voltage output (Figure 1). This voltage output is logic switch

–V

LPF

+In

–In

–EXC

Backpanel

Term Block

Surge

Suppression

and

Protection +V

Isolated

Field-Side

Power

Oscillator

Isolated

Computer-Side

Power

OUT

I/O Common

RD EN\

+5V

16 Power

Common

+EXC

–V

Isolated

Excitation

Source

DC LVDT

or Other

Transducer

Isochopper™

Amplifier

Pat Pending

LPF

Module OM5-DT

Input Range ±1V to ±10V

Input Bias Current ±0.05nA

Input Resistance

Normal 2MΩ(minimum)

Power Off 2MΩ(minimum)

Overload 2MΩ(minimum)

Input Protection

Continuous 240Vrms max

Transient ANSI/IEEE C37.90.1-1989 (formerly IEEE-472)

Excitation Voltage, VEXC +10.0VDC ±2mV

Excitation current 40mA (maximum)

Excitation Load Regulation ±5ppm/mA

Excitation Stability ±15ppm/°C

Isolated Excitation Protection

Continuous 240Vrms max

Transient ANSI/IEEE C37.90.1-1989 (formerly IEEE-472)

CMV, Input to Output

Continuous 1500Vrms max

Transient ANSI/IEEE C37.90.1-1989 (formerly IEEE-472)

CMR (50 or 60Hz) 100dB

NMR (–3dB at 1kHz) 120dB per decade above 1kHz

Accuracy(1) ±0.1% span, ±0.2mV RTI2

Nonlinearity ±0.02% span

Stability

Input Offset ±20µV/°C

Output Offset ±40µV/°C

Gain ±50ppm/°C

Noise

Input, 0.1 to 10Hz 0.4µVrms

Output, 100KHz 5mVpp

Bandwidth, –3dB 1kHz

Response Time (to 90% final value) 750µs

Output Range ±5V

Output Resistance 50Ω

Output Protection Continuous short to ground

Output Selection Time 6.0µs at Cload = 0 to 2000pF

(to ±1mV of VOUT)

Output Current Limit ±8mA

Output Enable Control

Max Logic “0” +0.8V

Min Logic “1” +2.4V

Max Logic “1” +36V

Input Current, “0, 1” 0.5µA

Power Supply Voltage +5VDC ±5%

Power Supply Current 200mA @ Full Exc. load, 100mA @ No Exc. Load

Power Supply Sensitivity ±200µV/% RTI(2)

Mechanical Dimensions 2.28" x 2.26" x 0.60" (58mm x 57mm x 15mm)

Environmental

Operating Temp. Range –40°C to +85°C

Storage Temp. Range –40°C to +85°C

Relative Humidity 0 to 95% noncondensing

Emissions EN50081-1, ISM Group 1, Class A (Radiated, Conducted)

Immunity EN50082-1, ISM Group 1, Class A (ESD, RF, EFT)

SPECIFICATIONS Typical at TA= +25°C and +5V power.

SCM5B

NOTES:

(1) Includes excitation error, nonlinearity, hysteresis and repeatability.

(2) RTI = Referenced to input.

ORDERINGINFORMATION

MODEL MAXIMUM INPUT OUTPUT

OM5-DT-1-C ±1V ±5V

OM5-DT-2-C ±2V ±5V

OM5-DT-3-C ±3V ±5V

OM5-DT-4-C ±4V ±5V

OM5-DT-5-C ±5V ±5V

OM5-DT-6-C ±6V ±5V

OM5-DT-7-C ±7V ±5V

OM5-DT-8-C ±8V ±5V

OM5-DT-9-C ±9V ±5V

OM5-DT-10-C ±10V ±5V

OM5-IFI

Frequency Input Modules

FEATURES

●ACCEPTS FREQUENCY INPUTS OF 0 to 100kHz

●PROVIDES HIGH LEVEL VOLTAGE OUTPUTS

●TTL LEVEL INPUTS

●1500 VOLT TRANSFORMER ISOLATION

●ANSI/IEEE C37.90.1-1989 TRANSIENT PROTECTION

●INPUT PROTECTED TO 240VAC CONTINUOUS

●±0.05% ACCURACY

●MIX AND MATCH OM5 TYPES ON BACKPANEL

●CSA CERTIFIED, FM APPROVED, CE COMPLIANT

DESCRIPTION

Each OM5-IFI Frequency input module provides a single channel of fre-

quency input which is isolated and converted to a high level analog voltage

output. This voltage output is logic switch controlled, which allows these

modules to share a common analog bus without the requirement of external

multiplexers (Figure 1).

The frequency input signal can be a TTL level signal or a zero-crossing signal.

Terminal 3 (+In) on the field-side terminal block is the “common” or ground

connection for input signals. A TTL signal is connected from terminal 2 (–In)

to terminal 3 (+In), while a zero-crossing signal is connected from terminal 4

(+EXC) to terminal 3 (+In). Input circuitry for each of the signal types has

hysteresis built in. An input signal must cross entirely through the hysteresis

region in order to trigger the threshold comparator.

A 5.1V excitation is available for use with magnetic pick-up or contact-

closure type sensors. The excitation is available on pin 1 (–EXC) and the

excitation common is pin 3 (+In).

The modules are designed with a completely isolated computer side circuit

which can be floated to ±50V from Power Common, pin 16. This complete

isolation means that no connection is required between I/O Common and

Power Common for proper operation of the output switch. If desired, the

output switch can be turned on continuously by simply connecting pin 22,

the Read-Enable pin to I/O Common, pin 19.

A special circuit in the input stage of the module provides protection against

accidental connection of power-line voltages up to 240VAC.

FIGURE 1. OM5-IFI Block Diagram.

Threshold

Comparator

+In

–In

–

–EXC

Backpanel

Term Block

5.1V

Surge

Suppression

and

Protection

Isolated

Field-Side

Power

+EXC

–V

TTL

Inputs

–V

LPF

Power

Oscillator

Isolated

Computer-Side

Power

OUT

I/O Common

RD EN\

+5V

16 Power Common

Signal

Isolation

Zero-Crossing

Inputs

F to V

Indice

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