OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2007-2017 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.
PAGE 1
DATA SHEET
Form 1684-170915
SNAP PAC RACKS
Features
Compatible with all SNAP PAC brains and R-series controllers,
including Wired+Wireless™ models
Secure mounting for SNAP I/O modules plus a SNAP brain or
on-the-rack SNAP PAC controller
Analog, digital, and serial modules on the same rack
Panel or DIN-rail mounting
Modules snap into place
Factory Mutual-approved versions available
DESCRIPTION
SNAP PAC I/O mounting racks are designed to hold an intelligent
SNAP I/O processor—a SNAP PAC EB-series or SB-series brain or a
SNAP PAC R-series on-the-rack controller—and several I/O modules.
Both standard wired controllers and brains and Wired+Wireless
models are mounted on these racks.
Since SNAP analog, digital, and serial I/O modules all have the same
footprint, customers using SNAP PAC racks can mix all these modules
on the same I/O mounting rack. Field devices are wired directly to the
top-mounted connectors on the modules plugged into each rack, or
through breakout boards when additional wiring space is required.
(See form 1756, the SNAP TEX Cables and Breakout Boards Data Sheet,
for more information.)
SNAP PAC racks can accommodate up to 4, 8, 12, or 16 I/O modules.
Part numbers ending in -FM are Factory Mutual approved.
The module and rack design allows modules to simply “snap” on the
mounting rack.
SNAP PAC racks use a retention rail locking system. Install two 4-40 by
½-inch standard machine screws to hold each module in position.
All SNAP PAC racks offer panel mounting and the option of DIN-rail
mounting. DIN-rail adapter part numbers are shown in the table
below. For more information, see form 1772, the SNAP TEX Mounting/
Wiring Tools and Spare Parts Data Sheet.
SNAP PAC racks require a 5 VDC power source. One power supply can
usually power the rack, the I/O processor (controller or brain), and all
modules on the rack. See form 1120, the SNAP Power Supplies Data
Sheet, to choose a power supply.
>
>
>
>
>
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SNAP-PAC-RCK8 (8-Module Position I/O Mounting Rack)
Shown with SNAP-PAC-R1 controller and SNAP modules (all
purchased separately)
Part Numbers
Part Description
SNAP-PAC-RCK4 4-module SNAP PAC rack
SNAP-PAC-RCK4-FM 4-module SNAP PAC rack, Factory Mutual
approved
SNAP-PAC-RCK8 8-module SNAP PAC rack
SNAP-PAC-RCK8-FM 8-module SNAP PAC rack, Factory Mutual
approved
SNAP-PAC-RCK12 12-module SNAP PAC rack
SNAP-PAC-RCK12-FM 12-module SNAP PAC rack, Factory Mutual
approved
SNAP-PAC-RCK16 16-module SNAP PAC rack
SNAP-PAC-RCK16-FM 16-module SNAP PAC rack, Factory Mutual
approved
SNAP-FUSE7.5AB 7.5-amp fuse, 25 pack
SNAP-TEX-DRC10 SNAP rack DIN-rail adapter clip, 10-pack
SNAP-TEX-REC10W Wide end cap for SNAP PAC racks DIN-rail
assemblies, 10-pack
SNAP-PAC-RCK12
PAGE 2
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2007-2017 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.
DATA SHEET
Form 1684-170915
SPECIFICATIONS
Power1 Requirements 5.0 to 5.2 VDC @ 4.2 Amps max
I/O Processor2
Compatibility
SNAP-PAC-R1
SNAP-PAC-R2
SNAP-PAC-EB1
SNAP-PAC-EB2
SNAP-PAC-SB1
SNAP-PAC-SB2
SNAP-PAC-R1-W
SNAP-PAC-R2-W
SNAP-PAC-EB1-W
SNAP-PAC-EB2-W
SNAP-PAC-R1-FM
SNAP-PAC-R2-FM
SNAP-PAC-EB1-FM
SNAP-PAC-EB2-FM
Replacement Fuse SNAP-FUSE7.5AB or Littelfuse 297 07.5
Rack Power Terminals
Wire Size 22 to 14 AWG
Operating Temperature –20 to 70 °C
Storage Temperature –40 to 85 °C
Relative Humidity 95%, non-condensing
Agency Approvals Non -FM models: UL, CE, RoHS, DFARS
-FM models: FM, CE, ATEX, RoHS, DFARS
Warranty 30 months from date of manufacture
1 Power requirements shown are for a rack, a processor, and a full load of
analog modules. Power requirements for SNAP serial and high-density
modules are higher. See module data sheets.
2 “I/O Processor” means a SNAP PAC brain or SNAP PAC on-the-rack
controller. For compatibility with legacy Opto 22 products, see form #1693,
Legacy and Current Product Comparison and Compatibility Charts.
Power Schematic
Module Mating Connector Pinout (female)
WARNING: EXPLOSION HAZARD. DO NOT DISCONNECT WHILE
CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS.
AVERTISSEMENT: RISQUE D'EXPLOSION. NE PAS DÉBRANCHER
TANT QUE LE CIRCUIT EST SOUS TENSION, À MOINS QU'IL NE
S'AGISSE D'UN EMPLACEMENT NON DANGEREUX.
Notes on Grounding
Pin 18 E GND on each module (see diagram above right) is connected
to the rack’s GND. Module hold-down screws are also connected to
the rack’s GND.
The brain or rack-mounted controller is connected to the rack’s GND
through its center hold-down screw.
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2007-2017 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.
PAGE 3
DATA SHEET
Form 1684-170915
DIMENSIONAL DRAWINGS
See table for overall length
dimensions for specific model
4.45***
(112.01 mm)
SNAP PAC R-series controller or
brain (purchased separately)
SNAP module
(purchased
separately)
Overall Length Dimensions
Part Number Description Width
(inches)
Width
(mm)
Length
(inches)
Length
(mm)
SNAP-PAC-RCK4
SNAP-PAC-RCK4-FM 4-module rack 4.45 112.01 6.25 158.75
SNAP-PAC-RCK8
SNAP-PAC-RCK8-FM 8-module rack 4.45 112.01 9.25 234.95
SNAP-PAC-RCK12
SNAP-PAC-RCK12-FM 12-module rack 4.45 112.01 12.25 311.15
SNAP-PAC-RCK16
SNAP-PAC-RCK16-FM 16-module rack 4.45 112.01 15.25 387.35
Overall Dimensions
PAGE 4
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2007-2017 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.
DATA SHEET
Form 1684-170915
DIMENSIONAL DRAWINGS (CONTINUED)
Right Side View with DIN-Rail Option Installed
(See form 1772)
For more information on DIN-rail mounting kits, see form 1772,
the SNAP TEX Mounting/Wiring Tools and Spare Parts Data Sheet.
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2007-2017 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.
PAGE 5
DATA SHEET
Form 1684-170915
MOUNTING THE EXTRUSION ONTO A PANEL
Use the following steps to mount a rack onto a panel. For DIN-rail
mounting, see page 6.
CAUTION: Do not let cutting fluids, cleaners, lubricants, or other
chemicals contact the plastic extrusion, as they can cause cracking. If you
use these chemicals before rack installation, be sure they are thoroughly
cleaned off.
Preferred Method: Template
(Product on site)
1. Use SNAP PAC rack mounting extrusion as template.
2. Use the diagram below to determine required product and option
clearances.
Alternate Method: Prefabrication of Panels
(No product on site)
Mounting holes are in sets of two, located on lower left and upper
right with respect to a center line (CL).
1. Using the diagram below, determine CL1 mounting hole
positions. (CL1 is located on the left side of all SNAP PAC rack
mounting extrusions.)
2. Use the center-to-center length specification table below to
determine the offset between center lines and the number of
center line positions for each model.
3. Repeat the process for each center line position.
Typical Plain View of SNAP Mounting Extrusion
Center-to-Center Length (All Models)
Part Number Description Center-to-Center
Length
Number of Center
Positions
SNAP-PAC-RCK4 (or -FM) 4-module rack 4.02 in. 2
SNAP-PAC-RCK8 (or -FM) 8-module rack 3.51 in. 3
SNAP-PAC-RCK12 (or -FM) 12-module rack 5.01 in. 3
SNAP-PAC-RCK16 (or -FM) 16-module rack 4.34 in. 4
PAGE 6
OPTO 22 • www.opto22.com SALES • sales@opto22.com SUPPORT • support@opto22.com
43044 Business Park Dr. Temecula, CA 92590-3614 800-321-6786 • 1-951-695-3000 800-835-6786 • 1-951-695-3080
© 2007-2017 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.
DATA SHEET
Form 1684-170915
ASSEMBLING AND MOUNTING ON A DIN RAIL
Push down hard on the other edge to snap the
board into place.
Insert one edge of the circuit board into the
extrusion.
1.
3.
Attach one DIN clip to each end cap using the
slots in the end caps as shown.
4.
(This step only for racks with three or more clips.)
Slide one DIN clip to the middle position and
secure with the rivet provided. For racks with four
clips, add an additional middle clip.
2.
Using the screws provided, secure an end cap and
DIN clip assembly to each end of the extrusion.
5.
Removing the Circuit Board from the Rack
Extrusion
If end caps are present, remove them. Then insert a flathead
screwdriver in one of the circuit board release notches and pry
up the board. Repeat in the other release notches until the
board pops out of the extrusion.
Rivet
(included)
2
3
4
1
5
Attaching the Adapter Clip to a DIN Rail
1. Hook the DIN-rail clip over the top of the DIN rail.
2. Using a screwdriver, pry open the DIN-rail clip flange at
the bottom of the clip. Push the clip toward the DIN rail.
3. Snap the DIN-rail clip into place DIN rail
Extrusion
assembly
For panel mounting, see page 5.
OPTO 22 • www.opto22.com SALES • sales@opto22.com SUPPORT • support@opto22.com
43044 Business Park Dr. Temecula, CA 92590-3614 800-321-6786 • 1-951-695-3000 800-835-6786 • 1-951-695-3080
© 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
Form 1335-170413
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
™ Software Suite
•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.
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.
PAC Project Basic offers control and HMI tools and is free for download
on our website, www.opto22.com. 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.
FREE PRODUCT SUPPORT
Opto 22’s California-based Product Support
Group offers free, comprehensive technical support for Opto 22
products from engineers with decades of training and experience.
Support is available in English and Spanish by phone or email,
Monday–Friday, 7 a.m. to 5 p.m. PST.
Support is always available on our website: how-to videos, user’s
guides, OptoKnowledgeBase, self-training guide, troubleshooting,
and OptoForums. In addition, hands-on training is available for free at
our Temecula, California headquarters, and you can register online.
PURCHASING OPTO 22 PRODUCTS
Opto 22 products are sold directly and through a worldwide network
of distributors, partners, and system integrators. For more information,
contact Opto 22 headquarters at 800-321-6786 (toll-free in the U.S.
and Canada) or 951-695-3000, or visit our website at
www.opto22.com.
