Installation Instructions

Original Instructions

FLEX I/O DeviceNet Adapter Modules

Catalog Numbers 1794-ADN, 1794-ADNK, Series C

Summary of Changes

Topic	Page
Summary of Changes	1
Overview	5
Install Your Adapter	5
Status Indicators	7
Enhancements to Firmware 3.001	7
Specifications	8
Additional Resources	10

This publication contains the following new or updated information. This list includes substantive updates only and is not intended to reflect all changes.

Topic	Page
Updated Certifications	9
Added Additional Resources	10

Environment and Enclosure

ATTENTION: This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in EN/IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating.

This equipment is not intended for use in residential environments and may not provide adequate protection to radio communication services in such environments.

This equipment is supplied as open-type equipment for indoor use. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The enclosure must have suitable flame-retardant properties to prevent or minimize the spread of flame, complying with a flame spread rating of 5VA or be approved for the application if nonmetallic. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain more information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

In addition to this publication, see the following:

Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1, for more installation requirements.
NEMA Standard 250 and EN/IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosures.

Prevent Electrostatic Discharge

ATTENTION: This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

Touch a grounded object to discharge potential static.
Wear an approved grounding wriststrap.
Do not touch connectors or pins on component boards.
Use a static-safe workstation, if available.
Do not touch circuit components inside the equipment.
Store the equipment in appropriate static-safe packaging when not in use.

UK and European Hazardous Location Approval

The following modules are UK and European Zone 2 approved: 1794-ADN and 1794-ADNK, series C.

The following applies to products marked II 3 G:

Are Equipment Group II, Equipment Category 3, and comply with the Essential Health and Safety Requirements relating to the design and construction of such equipment given in Schedule 1 of UKEX and Annex II of EU Directive 2014/34/EU. See the UKEx and EU Declaration of Conformity at rok.auto/certifications for details.
The type of protection is Ex ec IIC T4 Gc according to EN IEC 60079-0:2018, EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS, Issue Date 07/2018 and EN IEC 60079-7:2015+A1:2018, Explosive atmospheres. Equipment protection by increased safety "e".
Comply with Standard EN IEC 60079-0:2018, EXPLOSIVE ATMOSPHERES - PART O: EQUIPMENT - GENERAL REQUIREMENTS, Issue Date 07/2018, EN IEC 60079-7:2015+A1:2018 Explosive atmospheres. Equipment protection by increased safety "e", reference certificate number DEMKO 14 ATEX 1342501X and UL22UKEX2378X.
Are intended for use in areas in which explosive atmospheres caused by gases, vapors, mists, or air are unlikely to occur, or are likely to occur only infrequently and for short periods. Such locations correspond to Zone 2 classification according to UKEX regulation 2016 No. 1107 and ATEX directive 2014/34/EU.
May have catalog numbers followed by a “K” to indicate a conformal coating option.

WARNING: Special Conditions for Safe Use:

This equipment shall be mounted in an UKEX/ATEX/IECEx Zone 2 certified enclosure with a minimum ingress protection rating of at least IP54 (in accordance with EN/IEC 60079-0) and used in an environment of not more than Pollution Degree 2 (as defined in EN/IEC 60664-1) when applied in Zone 2 environments. The enclosure must be accessible only by the use of a tool.
This equipment shall be used within its specified ratings defined by Rockwell Automation.
Transient protection shall be provided that is set at a level not exceeding 140% of the peak-rated voltage value at the supply terminals to the equipment.
The instructions in the user manual shall be observed.
This equipment must be used only with UKEX/ATEX/IECEx certified Rockwell Automation® backplanes.
Earthing is accomplished through mounting of modules on rail.

WARNING: Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product. Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.

WARNING: When you insert or remove the module while backplane power is on, an electric arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding. Repeated electric arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance that can affect module operation.

North American Hazardous Location Approval

The following information applies when operating this equipment in hazardous locations.

Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate indicating the hazardous location temperature code. When combining products within a system, the most adverse temperature code (lowest "T" number) may be used to help determine the overall temperature code of the system. Combinations of equipment in your system are subject to investigation by the local Authority Having Jurisdiction at the time of installation.

WARNING: Explosion Hazard

Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.
Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product.
Substitution of components may impair suitability for Class I Division 2.

ATTENTION:

If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
Read this document and the documents listed in the Additional Resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.
Installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with the applicable code of practice.
In case of malfunction or damage, no attempts at repair should be made. The module should be returned to the manufacturer for repair. Do not dismantle the module.
Use only a soft dry anti-static cloth to wipe down equipment. Do not use any cleaning agents.
Do not remove or replace an adapter while power is applied. Interruption of the backplane can result in unintentional operation or machine motion.
To reduce susceptibility to noise, power analog modules and digital modules from separate power supplies.

ATTENTION: This product is grounded through the DIN rail to chassis ground. Use zinc-plated chromate-passivated steel DIN rail to assure proper grounding. The use of other DIN rail materials (for example, aluminum or plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding. Secure DIN rail to the mounting surface approximately every 200 mm (7.8 in.) and use end-anchors appropriately. Be sure to ground the DIN rail properly. See the Industrial Automation Wiring and Grounding Guidelines, Rockwell Automation publication 1770-4.1, for more information.

ATTENTION: Electrical Safety Considerations:

Power to this equipment and all connected I/O must be supplied from a source compliant with the following:

SELV source approved to EN/IEC60950-1, EN/IEC61010-2-201 or EN/IEC62368-1(ES1)(1)
PELV source approved to EN/IEC60950-1, EN/IEC61010-2-201 or EN/IEC62368-1(ES1)(1)

All wiring must comply with applicable electrical installation requirements (for example, N.E.C. article 501-4(b)). Wire conductor and insulation ratings shall support minimum temperature rating of 85 °C (185 °F)

(1) A power source approved to a U.S.A. or Canadian version of the above listed standards is required for system approval in the U.S.A. or Canada.

WARNING:

If you connect or disconnect the communications cable with power applied to this module or any device on the network, an electric arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.
If you connect or disconnect wiring while the field side power is on, an electric arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.
When used in a Class I Division 2, hazardous location, this equipment must be mounted in a suitable enclosure with proper wiring method that complies with the governing electrical codes.
For Class I Division 2 applications, use only Class I Division 2 listed or recognized accessories and modules approved for use within the FLEX™ I/O platform.

Overview

The FLEX I/O DeviceNet® adapter facilitates transfer of plant-floor data between plant floor devices and a controller.

Diagram of the FLEX I/O DeviceNet Adapter Module:

1. Adapter

2. Indicators

3. Wiring label

4. DeviceNet network cable (plug-in, screw-secured)

5. DeviceNet node selection thumbwheel switches

6. +24V DC connections

7. 24V common connections

8. Flexbus connector

Install Your Adapter

ATTENTION: During mounting of all devices, be sure that all debris (for example, metal chips, wire strands, and so on) is kept from falling into the module. Debris that falls into the module could cause damage on power-up.

Mount on a DIN rail before you install the terminal base units.

Position the DeviceNet adapter (A) on an IEC standard, (35 x 7.5 x 1 mm [1.38 x 0.3 x 0.04 in.]) top-hat DIN rail (B), at a slight angle.
Hook the lip on the rear of the adapter onto the top of the DIN rail, and rotate the adapter onto the rail.
Press down the adapter onto the DIN rail until flush. The locking tab (C) snaps into position and locks the adapter to the DIN rail.
If the adapter does not lock in place, use a screwdriver or similar device to move the locking tab down while pressing the adapter flush onto the DIN rail, and release the locking tab to lock the adapter in place. If necessary, push up on the locking tab to lock.
Connect the adapter wiring. See Connect Wiring on page 6.

Mount the Adapter on a Panel or Wall

To mount the adapter on a panel or wall, see the Panel Mounting Kit Cat. No. 1794-NM1/B Installation Instructions, publication 1794-IN135.

Mount or Replace the Adapter on an Existing System

Remove the DeviceNet plug-in connector from the front of the adapter.
Disconnect any adapter wiring that is jumpered to the adjacent terminal base.
Using a screwdriver or similar tool, open the module latching mechanism and remove the module from the base unit to which the adapter is attached.
Push the Flexbus connector toward the right side of the terminal base to unplug the backplane connection.
Release the locking tab and remove the adapter.

Before you install the new adapter, note the notch on the right rear of the adapter. This notch accepts the hook on the terminal base unit. The notch is open at the bottom. The hook and adjacent connection point keep the terminal base and the adapter tight together, reducing the possibility of a break in communication over the backplane.

Push down and in simultaneously to lock the adapter to the DIN rail.
If the adapter does not lock in place, use a screwdriver or similar device to move the locking tab down while pressing the adapter flush onto the DIN rail, and release the locking tab to lock the adapter in place. If necessary, push up on the locking tab to lock.

When the adapter is locked onto the DIN rail, gently push the Flexbus connector into the adapter to complete the backplane connection.

Reinstall the module in the adjacent terminal base unit.

Reconnect adapter wiring. See Connect Wiring on page 6.

Connect Wiring

Diagram showing DeviceNet connector and wiring terminals.

Connect	To	Wire color	Description
BLK wire	-V
BLU wire	CAN(1)low
Bare wire	Drain
WHT wire	CAN(1) high
RED wire	+V

The cable colors are shown on the wiring label on the front of the adapter.

(1) CAN = Controller Area Network

ATTENTION:

When connecting wiring, torque the terminal screws on the terminal connections (D, E, F, and G) to 0.8 N•m (7 lb-in).
Do not wire more than two conductors on any single terminal.

Insert the removable connector into the mating connector on the DeviceNet adapter.
Connect +V DC power to the terminal connection (E).

ATTENTION: Power wiring must be less than 3 m (9.8 ft) in length.

Connect -V common to the terminal connection (D).
Terminal connections (G) and (F) are used to pass +V DC power (G) and -V common (F) to the next module in the series (if necessary).

Set the Node Address

Use the 2-position thumbwheel switch to set the node address. Valid settings range from 00...63. Press either the + or - buttons to change the number.

Status Indicators

Diagram showing node address switches and status indicators.

The communication rate for the adapter is set by way of "baud detection" at power-up.

Indicator	Status	Description
Power	On	The power is applied to the adapter.
	Off	No power is applied to the adapter. Check the power wiring to the adapter.
Module/network status	Off	No power or no network access
	Flashing green/off	Online, but not connected
	Steady green	Online, link is okay, and connected
	Flashing red	A recoverable fault
	Steady red	Critical adapter failure
I/O status	Off	No power or outputs are off
	Flashing red	A recoverable fault - The outputs are in fault
	Flashing green/off	Idle Program mode - The outputs are in idle
	Steady green	The device is operational, running, and outputs are live.
	Steady red	Critical adapter fault - Unrecoverable

Enhancements to Firmware 3.001

Firmware revision 3.001 provides the following functionality to the 1794-ADN DeviceNet adapter:

When you cycle power to the adapter in out-of-the-box mode (no rack configuration stored in the memory of the adapter), and there is a 32-point input or output module (1794-IB32 or 1794-0B32) on the rail, the adapter detects the 32-point module as a 2-word module and allocate I/O space appropriately for the network connection.
With firmware revision 3.001, when you cycle power to the adapter in out-of-the-box mode, if a 1794-IB32 module is detected, it allocates two input words, and no output words, for the network connection. Similarly for the 1794-0B32, two output words, and no input words, are allocated for the network connection.

Corrected Anomalies

Firmware revision 3.001 corrects the following anomalies:

Input data issue in firmware revision 2.004
In firmware revision 2.003 or earlier, the 32-point I/O modules would have only one input word and one output word that is allocated in the default out-of-the-box mode of operation for each 32-point module.

Specifications

General Specifications

Attribute	Value
I/O capacity	8 modules
Power supply	The 24V DC power supply must be capable of providing a turn-on inrush surge current of 14 A for 5 ms for each adapter that is connected to this supply.
Power supply voltage	19.2...31.2V DC, 400 mA
DeviceNet power requirements, max	24V DC (±4%) at 90 mA
DeviceNet power supply voltage	24V DC, 90 mA, Class 2
Flexbus output supply voltage	5V DC, 640 mA
Flexbus output current, max	640 mA @ 5V DC
Input voltage rating	24V DC nom
Current draw, max	19.2...31.2V DC (includes 5% AC ripple)
Communication rate	125 KB, 250 KB, 500 KB
Indicators	Power - On/off Module/Network status - Red/green I/O status - Red/green
Isolation voltage	50V (continuous), basic insulation type Type tested at 1930V DC for 60 s, power to Flexbus, power to DeviceNet, and DeviceNet to Flexbus
Power dissipation, max	7.6 W @ 19.2V DC
Thermal dissipation, max	26 BTU/hr @ 19.2V DC
Dimensions, approx. (H x W x D)	87 x 68 x 69 mm (3.4 x 2.7 x 2.7 in)
Weight, approx.	195.5 g (6.9 oz)
Wiring category (1)	1 - On power ports 2 - On communications ports
Wire size	Power connections: 0.33...3.3 mm² (22...12 AWG) solid or stranded copper wire rated at 75 °C (167 °F) or greater 1.2 mm (3/64 in.) insulation max
Terminal screw torque	0.8 N-m (7 lb-in)
Enclosure type rating	None (open-style)
North American temp code	T4
UKEX/ATEX temp code	T4
IECEx temp code	T4

(1) Use this Conductor Category information for planning conductor routing. See Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.

Environmental Specifications

Attribute	Value
Temperature, operating	IEC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): -20...+70 °C (-4...+158 °F)
Temperature, surrounding air, max	70 °C (158 °F)
Temperature, nonoperating	IEC 60068-2-1 (Test Ab, Unpackaged nonoperating Cold), IEC 60068-2-2 (Test Bb, Unpackaged nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Unpackaged nonoperating Thermal Shock): -40...+85 °C (-40...+185 °F)
Relative humidity	IEC 60068-2-30 (Test Db, Unpackaged Damp Heat): 5...95% noncondensing
Vibration	IEC 60068-2-6 (Test Fc, Operating): 5 g @ 10...500 Hz
Shock, operating	IEC 60068-2-27 (Test Ea, Unpackaged Shock): 30 g
Shock, nonoperating	IEC 60068-2-27 (Test Ea, Unpackaged Shock): 50 g
Emissions	IEC 61000-6-4
ESD immunity	IEC 61000-4-2: 6 kV contact discharges 8 kV air discharges
Radiated RF immunity	IEC 61000-4-3: 10V/m with 1 kHz sine-wave 80% AM from 80...6000 MHz
EFT/B immunity	IEC 61000-4-4: +2 kV at 5 kHz on power ports ±4 kV at 5 kHz on communication ports
Surge transient immunity	IEC 61000-4-5: +1 kV line-line (DM) and ±2 kV line-earth (CM) on power ports +2 kV line-earth (CM) on communication ports
Conducted RF immunity	IEC 61000-4-6: 10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz

Certifications

Certifications (when product is marked)(1)	Value
c-UL-us	UL Listed Industrial Control Equipment, certified for US and Canada. See UL File E65584. UL Listed for Class I Division 2 Group A,B,C,D Hazardous Locations, certified for U.S. and Canada. See UL File E194810.
UK and CE	UK Statutory Instrument 2016 No. 1091 and European Union 2014/30/EU EMC Directive, compliant with: EN 61326-1; Meas./Control/Lab., Industrial Requirements EN 61000-6-2; Industrial Immunity EN 61131-2; Programmable Controllers EN 61000-6-4; Industrial Emissions
Ex	UK Statutory Instrument 2012 No. 3032 and European Union 2011/65/EU RoHS, compliant with: EN 63000; Technical documentation UK Statutory Instrument 2016 No. 1107 and European Union 2014/34/EU ATEX Directive, compliant with: EN IEC 60079-0; General Requirements EN IEC 60079-7; Potentially Explosive Atmospheres, Protection "e" II 3 G Ex ec IIC T4 Gc DEMKO 14 ATEX 1342501X UL22UKEX2378X IECEx System, compliant with: IEC 60079-0; General Requirements IEC 60079-7; Explosive Atmospheres, Protection "e" Ex ec IIC T4 Gc IECEx UL 14.0066X
RCM	Australian Radiocommunications Act, compliant with: EN 61000-6-4; Industrial Emissions
KC	Korean Registration of Broadcasting and Communications Equipment, compliant with: Article 58-2 of Radio Waves Act, Clause 3
Morocco	Arrêté ministériel nº 6404-15 du 29 ramadan 1436
CCC	CNCA-C23-01 强制性产品认证实施规则防爆电气 CNCA-C23-01 CCC Implementation Rule Explosion-Proof Electrical Products 2020122309111829

(1) See the Product Certification link at rok.auto/certifications for Declaration of Conformity, Certificates, and other certification details.

Additional Resources

For more information on the products that are described in this publication, use these resources. You can view or download publications at rok.auto/literature.

Resource	Description
FLEX I/O and FLEX I/O-XT Selection Guide, publication 1794-SG002	A description and overview of the 1794 series FLEX I/O and FLEX I/O-XTTM modules and compatible control platforms.
FLEX I/O Communication Adapters Specifications Technical Data, publication 1794-TD014	Technical specifications and certifications for FLEX I/O communication adapters.
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1	Provides general guidelines for installing a Rockwell Automation industrial system.
Product Certifications website, rok.auto/certifications	Provides declarations of conformity, certificates, and other certification details.

Rockwell Automation Support

Use these resources to access support information.

Technical Support Center	Find help with how-to videos, FAQs, chat, user forums, Knowledgebase, and product notification updates. rok.auto/support
Local Technical Support Phone Numbers	Locate the telephone number for your country. rok.auto/phonesupport
Technical Documentation Center	Quickly access and download technical specifications, installation instructions, and user manuals. rok.auto/techdocs
Literature Library	Find installation instructions, manuals, brochures, and technical data publications. rok.auto/literature
Product Compatibility and Download Center (PCDC)	Download firmware, associated files (such as AOP, EDS, and DTM), and access product release notes. rok.auto/pcdc

Documentation Feedback

Your comments help us serve your documentation needs better. If you have any suggestions on how to improve our content, complete the form at rok.auto/docfeedback.

Waste Electrical and Electronic Equipment (WEEE)

At the end of life, this equipment should be collected separately from any unsorted municipal waste.

Rockwell Automation maintains current product environmental compliance information on its website at rok.auto/pec.

rockwellautomation.com

Connect with us.

AMERICAS: Rockwell Automation, 1201 South Second Street, Milwaukee, WI 53204-2496 USA, Tel: (1) 414.382.2000

EUROPE/MIDDLE EAST/AFRICA: Rockwell Automation NV, Pegasus Park, De Kleetlaan 12a, 1831 Diegem, Belgium, Tel: (32) 2663 0600

ASIA PACIFIC: Rockwell Automation SEA Pte Ltd, 2 Corporation Road, #04-05, Main Lobby, Corporation Place, Singapore 618494, Tel: (65) 6510 6608

UNITED KINGDOM: Rockwell Automation Ltd., Pitfield, Kiln Farm, Milton Keynes, MK11 3DR, United Kingdom, Tel: (44)(1908)838-800

Allen-Bradley, expanding human possibility, FLEX I/O, FLEX I/O-XT, Rockwell Automation, RSNetWorx, and TechConnect are trademarks of Rockwell Automation, Inc.

DeviceNet is a trademark of ODVA, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

Publication 1794-IN099F-EN-P - June 2024 | Supersedes Publication 1794-IN099E-EN-P - July 2023

Models: 1794-ADN, 1794-ADN Flex I-O DeviceNet Adapter Module, Flex I-O DeviceNet Adapter Module, DeviceNet Adapter Module, Adapter Module, Module

File Info : application/pdf, 12 Pages, 1.12MB

1794-in099 -en-p ?v=174303819

References

Acrobat Distiller 24.0 (Windows)

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