SNAP PAC SYSTEM ENCLOSURES
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Features
Sturdy enclosures provide protection and convenience for
your SNAP PAC System
Just add the I/O modules and processor (brain or rackmounted controller) needed for your application
Mounting rack and power supply are already wired
Easy to install and use
DESCRIPTION
SNAP-IT enclosures make it easy to install Opto 22 I/O where you
need it. With a choice of rack, panel, and wall mounting, these
enclosures provide convenience and protection for your processor
and I/O.
Each enclosure includes an I/O mounting rack and a power supply,
already wired. You add the I/O processor, either a SNAP PAC R-series
controller or a SNAP PAC Ethernet brain, and the SNAP input and
output (I/O) modules needed for your application.
Adding a Processor
For the processor, if you need programming capability, choose a SNAP
PAC R-series programmable automation controller. The PAC Project
Basic Software Suite is a free download from our website and provides
full-featured control programming plus HMI (human-machine
interface) development and runtime.
DATA SHEET
Form 1240-170922
PAGE 1
SNAP-IT-RM16
See the Products tab on the Opto 22 website ( to
choose your processor and I/O and to download the free PAC Project
software.
Enclosure Models
Three SNAP-IT enclosures are available:
SNAP-IT-RM16—This rack-mounted metal enclosure is a standard
3U box and can also be used as a tabletop unit. It holds one processor
and up to 16 I/O modules. A typical application would be monitoring
and controlling facilities and interior equipment.
If you don’t need programmability, choose a SNAP PAC Ethernet brain.
These brains provide local intelligence and communication and can
be used with a SNAP PAC controller, with an Allen-Bradley PLC or a
Modbus/TCP system, or for PC-based control.
Controllers and brains communicate over a standard 10/100 Mbps
wired Ethernet network. In some enclosures you can also use a
Wired+Wireless™ model, which communicates over a wired Ethernet
network, over an 802.11a, b, or g wireless LAN, or both ways
simultaneously.
Adding I/O
For I/O, you can choose the mix of analog, digital, and serial modules
you require. Modules range from one to 32 points per module, and a
wide variety of signal types is available. All SNAP I/O modules work
with any SNAP PAC brain or R-series controller and all can be mixed in
the same enclosure.
Part Numbers
Part Description
SNAP-IT-RM16
SNAP-IT-PM12
SNAP-IT-WM4
POWERCABLE-US
POWERCABLE-UK
POWERCABLE-INTL
SNAP PAC System 16-module enclosure, metal,
rack-mounted
SNAP PAC System 12-module enclosure, NEMA
3R, metal, panel-mounted
SNAP PAC System 4-module enclosure, NEMA
4, 4X, 6; IP66, IP67; polycarbonate, wall-mounted
120 VAC power cord (United States) for the
SNAP-IT-RM16
240 VAC power cord (United Kingdom) for the
SNAP-IT-RM16
240 VAC power cord (International) for the
SNAP-IT-RM16
© 2012–2017 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-IT-PM12—This panelmounted enclosure is a
NEMA3R metal housing for
mounting on interior or exterior
walls or equipment. It holds one
processor and up to
12 I/O modules and includes a
24 V loop power supply.
DATA SHEET
Form 1240-170922
PAGE 2
SNAP-IT-PM12 units are ideal for
use in industrial environments,
for example manufacturing and
processing machinery,
communication towers, tanks,
and pipelines.
SNAP-IT-WM4—The NEMA 4/4X/6 wall-mounted WM4 is a sturdy
polycarbonate industrial enclosure that holds one processor and up
to four I/O modules. It includes a 24 V loop power supply.
The SNAP-IT-WM4 has a transparent cover. It is a handy size for small
areas and mounts on any wall.
SPECIFICATIONS
SNAP-IT-RM16 SNAP-IT-PM12 SNAP-IT-WM4
Mounting Rack mounted Panel mounted Wall mounted
Enclosure
Dimensions
Items included
I/O module slots 16 12 4
Power supply
Power consumption 30 W 30 W 10 W
Power cord
(order separately)
LED indicators
Operating temperature
Storage temperature
Humidity 0–95% humidity, non-condensing 0–95% humidity, non-condensing 0–95% humidity, non-condensing
Warranty 30 months 30 months 30 months
1
NEMA 3 or NEMA 4 is recommended for exterior use.
2
See I/O, brain, or controller data sheets for details on LEDs.
3
Operating and storage temperatures listed are for the enclosure only. Temperature limitations for the processor and I/O you install inside the
enclosure are more limiting. See the processor’s and I/O modules’ data sheets for their specifications.
2
Standard 19-inch metal rack-mount
enclosure, 3U
17.25" W x 5.22" H x 7.5" D
(43.8 cm x 13.3 cm x 19.1 cm) Depth
includes modules, which extend 0.88"
(2.3 cm) out the back of the box for wiring convenience.
Enclosure, SNAP PAC mounting rack,
and power supply
UL rated 120-250 VAC
Manufacturer rated 100-250 VAC
120 VAC United States,
240 VAC United Kingdom, or
240 VAC International
On front panel, 64 LEDs indicate point
status for 4-channel digital
I/O modules; brain or controller LEDs
are also visible on front.
3
0° to 70° C (32 to 158° F) 0° to 70° C (32 to 158° F) –40 to 80°C (–40 to 176° F)
3
–30° to 85° C (–22 to 185° F) –30° to 85° C (–22 to 185° F) –40 to 80 °C (–40 to 176° F)
Metal enclosure; meets NEMA 3R.1
16.19" W x 18.25" H x 6.57" D
(41.1 cm x 46.4 cm x 16.7 cm)
Enclosure, SNAP PAC mounting rack,
power supply, and 24 V loop power
supply
UL rated 120-250 VAC
Manufacturer rated 100-250 VAC
Loop power supply: 24 VDC
n/a n/a
Status LEDs on I/O and status/communication LEDs on brain or controller are
not visible outside the enclosure.
Polycarbonate industrial enclosure,
transparent cover; meets NEMA 4, 4X,
6 and IP66, IP67
9.84" W x 6.89" H x 5.9" D
(25.0 cm x 17.5 cm x 15.0 cm)
Enclosure, SNAP PAC mounting rack,
power supply, and 24 V loop power
supply
100–240 VAC (50/60 Hz)
Loop power supply: 24 VDC
Status LEDs on I/O and status/communication LEDs on brain or controller are
visible through transparent cover.
© 2012–2017 Opto 22. All rights reserved. Dimen sions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DIMENSIONAL DRAWINGS—SNAP-IT-RM16
NOTE: I/O modules extend beyond the back
edge of the enclosure for easier wiring.
DATA SHEET
Form 1240-170922
PAGE 3
© 2012–2017 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.
DIMENSIONAL DRAWINGS—SNAP-IT-PM12
DATA SHEET
Form 1240-170922
PAGE 4
© 2012–2017 Opto 22. All rights reserved. Dimen sions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DIMENSIONAL DRAWINGS—SNAP-IT-WM4
NOTE: If you are using the SNAP-IT-WM4 with a Wired+Wireless
controller or brain, purchase a 90-degree right-angle bracket
adapter for the antenna. Wired+Wireless models include the
following:
SNAP-PAC-R1-W
SNAP-PAC-R2-W
SNAP-PAC-EB1-W
SNAP-PAC-EB2-W
AC
24 common
+ 24 VDC
5 common
5 VDC (wired to rack)
Wiring the 24 VDC loop power supply
V1 = 4.0 A at 5 VDC
V2 = 1.4 A at 24 VDC
DATA SHEET
Form 1240-170922
PAGE 5
© 2012–2017 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.
More about Opto 22
PRODUCTS
Opto 22 develops and manufactures reliable, easy-to-use, open
standards-based hardware and software products used worldwide.
Industrial automation, process control, building automation, industrial
refrigeration, remote monitoring, data acquisition, and Industrial
Internet of Things (IIoT) applications all rely on Opto 22.
groov
Monitor and control your
equipment from anywhere using
your smartphone or tablet with
groov. Build your own mobile app
easily—just drag, drop, and tag. No
programming or coding. Visit
groov.com for more information
and your free trial.
SNAP PAC System
Developer- and IIoT-ready, the SNAP PAC System connects physical
assets to databases and applications using open standards. The SNAP
PAC System consists of four integrated components:
SNAP PAC controllers
•PAC Project
•SNAP PAC brains
•SNAP I/O
SNAP PAC Controllers
SNAP PAC programmable automation
controllers handle a wide range of digital,
analog, and serial functions for data collection,
remote monitoring, process control, and
discrete and hybrid manufacturing.
For IIoT applications and easier integration with company systems,
standalone and rack-mounted SNAP PACs include a built-in HTTP/
HTTPS server and RESTful API (application program interface). The
REST API gives you secure, direct access to I/O and variable data using
your choice of programming languages. No middleware, protocol
converters, drivers, or gateways needed.
™
Software Suite
™
PAC Project Basic offers control and HMI tools and is free for download
on our website, PAC Project Professional, available
for separate purchase, adds one SoftPAC software-based controller,
OptoOPCServer, OptoDataLink, options for controller redundancy or
segmented networking, and support for legacy Opto 22 serial mistic
I/O units.
SNAP PAC Brains
While SNAP PAC controllers provide central control and data
distribution, SNAP PAC brains provide distributed intelligence for I/O
processing and communications. Brains offer analog, digital, and serial
functions, including thermocouple linearization, local PID loop
control, watchdog, totalizing, and much more.
SNAP I/O
I/O provides the local connection to sensors and equipment. Opto 22
SNAP I/O offers 1 to 32 points of reliable I/O per module. Analog,
digital, and serial modules are mixed on one mounting rack and
controlled by a SNAP PAC brain or rack-mounted PAC.
QUALITY
Founded in 1974, Opto 22 has established a worldwide reputation for
high-quality products. All are made in the U.S.A. at our manufacturing
facility in Temecula, California.
Because we test each product twice before it
leaves our factory, rather than only testing a
sample of each batch, we can guarantee most
solid-state relays and optically isolated I/O
modules for life.
™
Based on open Ethernet and Internet Protocol (IP) standards, SNAP
PACs make it easier to build or extend a system without the expense
and limitations of proprietary networks and protocols.
PAC Project Software Suite
Opto 22’s PAC Project Software Suite offers full-featured, cost-effective
control programming, HMI (human machine interface), OPC server,
and database connectivity software.
Control programming includes both easy-to-learn flowcharts and
optional scripting. Commands are in plain English; variables and
I/O point names are fully descriptive.
© 2012–2017 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.
Form 1335-170413
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