SNAP-AILC-2 OPTO 22, SNAP-AILC-2 Datasheet

SNAP-AILC-2

Manufacturer Part Number

SNAP-AILC-2

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-2

Accessory Type

Load Cell Input Module, 10 VDC Excitation, 3 Or 4 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

3/4 mV/V

Input Type

Analog

Input, Range

3/4 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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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

Filter Weight and Fast Settling Features” on page

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

with all SNAP PAC brains and rack-mounted controllers, both

standard wired and Wired+Wireless

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.

SNAP racks use a retention rail locking system that holds

modules securely to the rack. Normally, a hold-down screw is

not required. However, for applications that require additional

module security, each module has provisions for two 4-40 by

Features

SNAP Load Cell Modules

© 2011 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.

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

SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com

™

models. The modules

“Using the

Part Number

½-inch standard machine screws to hold each module in

position on the SNAP rack.

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

Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com

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-2

SNAP-AILC-2 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

... Specifications Input Range Sensitivity: SNAP-AILC SNAP-AILC-2 Input Resistance Resolution: Analog Scale Points Response Time, Data Freshness DC Reversal (Input) DC Common Mode Rejection AC Common Mode Rejection Maximum Survivable Input Maximum Operating Common Mode Voltage Accuracy (% Full Scale): Offset Gain Usable Resolution at Default Configuration (Fast) ...

Page 3

... SNAP Load Cell Modules 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) (Channel 1) Data Freshness 9 ms (Channel 1) At filter weight 64 (default): ...

Page 4

... Wiring: SNAP-AILC and SNAP-AILC-2 Modules Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com PAGE SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com 4 © 2011 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. ...

Page 5

... SNAP Load Cell Modules Dimensions SNAP-AILC and SNAP-AILC-2 Modules SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com © 2011 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. ...

Page 6

... SNAP I/O I/O provides the local connection to sensors and equipment. Opto 22 SNAP I/O offers points of reliable I/O per module, depending on the type of module and your needs. Analog, digital, serial, and special-purpose modules are all mixed on the same mounting rack and controlled by the same processor (SNAP PAC brain or rack-mounted controller) ...

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