Impulse 8B45 User Manual

SensorLex 8B Isolated Analog Signal Conditioning Products

8B45

Frequency Input Modules

Description

8B modules are an optimal solution for monitoring real-world process signals

and providing high level signals to a data acquisition system. Each 8B45 module

isolates and conditions a frequency input signal and provides an analog voltage

output.

The frequency input signal can be either a TTL level or zero crossing with as

little as ±100mV amplitude. Input circuitry for each signal type has built-in

hysteresis to prevent spurious noise from corrupting the module output. TTL

signals are applied to the + and  terminals while zero crossing signals are

applied to the +EXC and  terminals. Reference the block diagram below.

A 5V excitation is available for use with magnetic pick-up or contact closure type

sensors. The excitation is available on the EXC terminal with return on the

 terminal.

A special input circuit on the 8B45 modules provides protection against

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

the I/O and power terminals protect against harmful transients.

Isolation is provided by optical coupling to suppress transmission of common

mode spikes or surges. The module is powered from +5VDC, ±5%.

The modules are designed for installation in Class I, Division 2 hazardous

locations and have a high level of immunity to environmental noise.

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Features

 Accepts Frequency Input Signals 0 to 100kHz

 TTL or Zero-Crossing Signal Inputs

 High Level Voltage Outputs

 1500Vrms Isolation

 ANSI/IEEE C37.90.1 Transient Protection

 Input Protected up to 240VAC Continuous

 100dB CMR

 ±0.10% Accuracy

 ±0.05% Linearity

 Low Drift with Ambient Temperature

 UL Listing Pending

 Mix and Match Module Types on Backpanel

Figure 1: 8B45 Block Diagram

For information call 800-444-7644

SensorLex 8B Isolated Analog Signal Conditioning Products

Specifications

Module

Input Range 0Hz to 100kHz

Input Threshold Zero Crossing

Minimum Input 200mVp-p

Maximum Input 350Vp-p TTL, 170Vp-p Zero Crossing

Minimum Pulse Width 4µs

TTL Input Low 0.8V max

TTL Input High 2.4V min

Input Hysteresis

Zero Crossing ±50mV

TTL 1.5V

Input Resistance

Normal 200kΩ Power Off 200kΩ Overload 200kΩ

Input Protection

Continuous

Transient ANSI/IEEE C37.90.1

Excitation +5V at 8mA max

CMV, Input to Output

Continuous 1500Vrms max

Transient ANSI/IEEE C37.90.1

CMR (50 or 60Hz) 100dB

Accuracy

Nonlinearity ±0.05% Span

Stability

Offset ±25ppm/°C

Gain ±100ppm/°C

Noise

Output Ripple <10mVp-p at Input >2% span

Response Time (0 to 90%)

8B45-01, -02, -03 300ms, 175ms, 50ms

8B45-04, -05, -06 30ms, 30ms, 15ms

8B45-07, -08 15ms, 2ms

Output Range 0 to +5V

Output Protection Continuous Short to Ground

Transient ANSI/IEEE C37.90.1

Power Supply Voltage +5VDC ±5%

Power Supply Current 110mA

Power Supply Sensitivity ±50ppm/%

Mechanical Dimensions 1.11" x 1.65" x 0.40"

(h)(w)(d) (28.1mm x 41.9mm x 10.2mm)

Environmental

Operating Temp. Range -40°C to +85°C

Storage Temp. Range -40°C to +85°C

Relative Humidity 0 to 95% Noncondensing

Emissions EN61000-6-4 ISM, Group 1

Radiated, Conducted Class A

Immunity EN61000-6-2 ISM, Group 1

R F Performance A ±0.5% Span Error

ESD,EFT,Surge,Voltage Dips Performance B

NOTES:

(1) 240VAC between + and  / +EXC / EXC terminals. 120VAC between  and +EXC / EXC terminals

and between +EXC and EXC terminals.

(2) Includes nonlinearity, hysteresis and repeatability.

(1)

(2)

Typical at TA=+25°C and +5V power

8B45

240Vrms max

±0.10% Span

Ordering Information

Model Input Range Output Range

8B45-01 0Hz to 500Hz 0V to +5V

8B45-02 0Hz to 1kHz 0V to +5V

8B45-03 0Hz to 2.5kHz 0V to +5V

8B45-04 0Hz to 5kHz 0V to +5V

8B45-05 0Hz to 10kHz 0V to +5V

8B45-06 0Hz to 25kHz 0V to +5V

8B45-07 0Hz to 50kHz 0V to +5V

8B45-08 0Hz to 100kHz 0V to +5V

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