SNAP-AILC OPTO 22, SNAP-AILC Datasheet

SNAP-AILC

Manufacturer Part Number

SNAP-AILC

Description

Load Cell Module

Manufacturer

OPTO 22

Type

Inputr

Datasheets

1.SNAP-AILC.pdf (6 pages)

2.SNAP-AILC.pdf (4 pages)

Specifications of SNAP-AILC

Accessory Type

Load Cell Input Module, 10 VDC Excitation, 2 Or 3 MV/V Input Sensitivity

Leaded Process Compatible

Peak Reflow Compatible (260 C)

Brand/series

SNAP Series

Connection To Host

Backplane

Current, Input

40/115 mA

Dimensions

82.55mmL×18.29mmW×90.17mmH

Input

2/3 mV/V

Input Type

Analog

Input, Range

2/3 mV/V

Mounting Type

PCB

Number Of Channels

Primary Type

Control

Special Features

Transformer Isolation, Optical Isolation, Load Cell Input

Voltage, Isolation

4000/1500 V

Voltage, Supply

24 VDC

For Use With

Snap I/O Modules

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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SNAP Load Cell Modules

Description

The SNAP-AILC and SNAP-AILC-2 modules each provide one

channel of transformer and optically-isolated analog-to-digital

conversion for load cell inputs.

These modules support 6- or 4-wire load cells (4-wire is at reduced

performance). Both modules provide isolated 10 VDC bridge

excitation for up to four parallel 415/350 ohm load cells as a load

cell front end. For both modules, 24 VDC is required at the separate

connector on top of the module.

The bridge and 10 VDC bridge power are isolated from the 24 VDC

bridge source and the 5 VDC source used by the mounting rack.

The 24 VDC input is reverse-polarity protected and may be used for

multiple modules. The 10 VDC bridge source is current limited so

that an external fault on the load cell is isolated and will not affect

another load cell module.

There are two channels of data: channel 1 is unfiltered, and channel

2 is filtered by a 0 to -48dB programmable digital filter. The filtered

data has a fast settling feature with a programmable fast settle

level. This feature decreases settling time when there are large step

changes in the load cell output and high filter weights. For more

information, see

on page

As part of the SNAP PAC System, these modules can be used with

all SNAP PAC brains and rack-mounted controllers. The modules

snap onto Opto 22 SNAP PAC mounting racks, and field connections

are made by a pluggable terminal strip on top of the module.

The SNAP-AILC and SNAP-AILC-2 are configured using PAC

Manager or PAC Control.

Features

SNAP-AILC works with 2 mV/V or 3 mV/V load cells;

SNAP-AILC-2 works with or 3 mv/V or 4 mV/V load cells

Provides both direct ADC readings and filtered values

Convenient pluggable wiring terminals

Module converts power from an external 24 VDC power

supply to isolated 10 VDC for bridge excitation for up to

four 350 ohm load cells.

Rugged packaging

“Using the Filter Weight and Fast Settling Features”

Part Number

Notes for legacy products: SNAP-AILC and SNAP-AILC-2

modules can also be used with legacy SNAP Ultimate, SNAP

Ethernet, and SNAP Simple brains that have analog capability, and

with SNAP M-series and B-series mounting racks. These modules

cannot be used with the serial B3000 brain.

The SNAP-AILC is also supported by legacy software ioManager,

and both modules are supported by ioControl. See the following

table for minimum firmware and software versions required.

For more information on legacy products, see Opto 22 form #1688,

SNAP PAC System Migration Technical Note, and form #1693, Legacy

and Current Product Comparison and Compatibility Charts.

SNAP-AILC

SNAP-AILC-2

Processor firmware 6.1c or

higher

PAC Manager or ioManager

7.0a or higher

PAC Control or ioControl 6.1c

or higher

Part

Firmware and Software Versions Required

SNAP-AILC

SNAP-AILC Load Cell Module

Load cell input, 10 VDC excitation,

2 or 3 mV/V input sensitivity

Load cell input, 10 VDC excitation,

3 or 4 mV/V input sensitivity

Processor firmware 7.1d or

higher

PAC Manager

PAC Control or ioControl 7.1d

or higher

Description

SNAP-AILC-2

PAGE

Related parts for SNAP-AILC

SNAP-AILC Summary of contents

Page 1

... SNAP Load Cell Modules Features SNAP-AILC works with 2 mV mV/V load cells; SNAP-AILC-2 works with mV/V load cells Provides both direct ADC readings and filtered values Convenient pluggable wiring terminals Module converts power from an external 24 VDC power supply to isolated 10 VDC for bridge excitation for up to four 350 ohm load cells ...

Page 2

... Input Current Output Fault Current Ambient Temperature: Operating Storage SNAP-AILC and SNAP-AILC-2 Configuration Options Both modules can be configured as “Fast” or “Slow,” depending on the response you need. Configure modules in PAC Control or PAC Manager. Fast (Default) ADC Notch Filter 125 Hz) ...

Page 3

... SNAP Load Cell Modules Using the Filter Weight and Fast Settling Features There are two channels of data on the SNAP-AILC and SNAP-AILC-2 modules. The first channel provides raw Analog-to-Digital (ADC) data, while the second channel provides filtered data. The filtered reading is calculated by the module from channel 1 data after every ADC conversion ...

Page 4

... SNAP Load Cell Modules Dimensions SNAP-AILC and SNAP-AILC-2 Modules PAGE 5 ...

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