Datasheet > DI-8B45-08

DI-8B45-08

更新时间： 2024-11-25 06:53:11

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其他 - ETC		/
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描述
Frequency Input Modules

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DI-8B45-08 数据手册

DI-8B45 Frequency Input Modules

FEATURES

SPECIFICATIONS

Typical at T = +25ºC and +5V Power

• Accepts Frequency Input Signals 0 to

100kHz

DI-8B45

Input Range

0Hz to 100kHz

• TTL or Zero-Crossing Signal Inputs

• High Level Voltage Outputs

Input Threshold

Zero Crossing

200mVp-p

Minimum Input

Maximum Input

Minimum Pulse Width

TTL Input Low

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

• 1500Vrms Transformer Isolation

4µs

0.8V max

2.4V min

• ANSI/IEEE C37.90.1 Transient Pro-

tection

TTL Input High

• Input Protected up to 240VAC Con-

tinuous

Input Hysteresis

Zero Crossing

TTL

±50mV

1.5V

• 100dB CMR

Input Resistance

Input Protection

• 70dB NMR at 60Hz

• ±0.10% Accuracy

Normal

Power Off

Overload

200kΩ

• ±0.05% Linearity

• Low Drift with Ambient Temperature

Continuous¹

Transient

240Vrms max

ANSI/IEEE C37.90.1

• UL, CSA, FM and CE Certifications

Pending

Excitation

+5V at 8mA max

• Mix and Match Module Types

CMV, Input to Output

Continuous

Transient

1500Vrms max

ANSI/IEEE C37.90.1

DESCRIPTION

DI-8B modules are an optimal solution

for monitoring real-world process signals

and providing high level signals to a data

acquisition system. Each DI-8B45 module

isolates and conditions a frequency input

signal and provides an analog voltage

output.

CMR (50Hz or 60Hz)

Accuracy²

100dB

±0.10% Span

±0.05% Span

Nonlinearity

Stability

Offset

Gain

±25ppm/ºC

±100ppm/ºC

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 - ter-

minals. Reference the block diagram (p 2).

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 DI-8B45

modules provides protection against ac-

cidental connection of power-line voltages

up to 240VAC. Clamp circuits on the I/O

and power terminals protect against harm-

ful transients.

Noise

Output Ripple

<10mVp-p at Input >2% Span

Response Time, 90% Span

300ms (-01); 175ms (-02); 50ms (-03);

30ms (-04); 30ms (-05); 15ms (-06);

15ms (-07); 2ms (-08)

Output Range

0 to +5V

Output Protection

Continuous Short to Ground

ANSI/IEEE C37.90.1

Transient

Power Supply Voltage

Power Supply Current

Power Supply Sensitivity

Mechanical Dimensions

+5VDC ±5%

110mA

±50ppm/%

1.11" × 1.65" × 0.40"

(28.1mm × 41.9mm × 10.2mm)

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

-40ºC to +85ºC

0 to 95% Noncondensing

Isolation is provided by optical coupling

to suppress transmission of common mode

spikes or surges. The module is powered

from +5VDC, ±5%.

¹240VAC between + and -/+EXC/-EXC terminals. 120VAC between - and +EXC/-

EXC terminals and between +EXC and -EXC terminals.

²Includes nonlinearity, hysteresis, and repeatability.

The modules are designed for installation

in Class I, Division 2 hazardous locations

and have a high level of immunity to envi-

ronmental noise.

DATAQ Instruments, Inc.

• 241 Springside Drive • Akron, Ohio 44333 • Tel: 330-668-1444 • Email: support@dataq.com • www.dataq.com

中文翻译

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