Installation Instructions

Table of Contents

Summary of Changes

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

Important Safety Information

ATTENTION: 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. Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice. If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

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.

Preventing 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.
• Do not touch circuit components inside the equipment.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.

Hazardous Location Approvals

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.

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.

IEC Hazardous Location Approval

The following applies to products with IECEx certification:

• 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 to IEC 60079-0.
• The type of protection is Ex ec nC IIC T4 Gc according to IEC 60079-0, IEC 60079-15, and IEC 60079-7.
• Comply to Standards IEC 60079-0, Explosive atmospheres - Part 0: Equipment - General requirements, Edition 7, Revision Date 2017, IEC 60079-15, ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERES - PART 15: CONSTRUCTION, TEST AND MARKING OF TYPE OF PROTECTION "N", Edition 5, Issue Date 12/2017, and IEC 60079-7, 5.1 Edition revision date 2017, Explosive atmospheres - Part 7: Equipment protection by increased safety "e", reference IECEx certificate number IECEx UL 20.0072X.
• May have catalog numbers followed by a "K" to indicate a conformal coating option.

UK and European Hazardous Location Approval

The following applies to products marked Ex II 3 G:

• Are intended for use in potentially explosive atmospheres as defined by UKEX regulation 2016 No. 1107 and European Union Directive 2014/34/EU and has been found to comply with the Essential Health and Safety Requirements relating to the design and construction of Category 3 equipment intended for use in Zone 2 potentially explosive atmospheres, given in Schedule 1 of UKEX and Annex II of this Directive.
• Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN IEC 60079-7, EN IEC 60079-15, and EN IEC 60079-0.
• 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 nC IIC T4 Gc according to EN IEC 60079-0:2018, EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS, Issue Date 07/2018, CENELEC EN IEC 60079-15, Explosive atmospheres - Part 15: Equipment protection by type of protection "n", Issue Date 04/2019, and CENELEC EN IEC 60079-7:2015+A1:2018, Explosive atmospheres. Equipment protection by increased safety "e".
• Comply to Standard EN IEC 60079-0:2018, EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS, Issue Date 07/2018, CENELEC EN IEC 60079-15, Explosive atmospheres - Part 15: Equipment protection by type of protection "n", Issue Date 04/2019, and CENELEC EN IEC 60079-7:2015+A1:2018 Explosive atmospheres. Equipment protection by increased safety "e", reference certificate number DEMKO 04 ATEX 0330347X and UL22UKEX2478X.
• 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 is not resistant to sunlight or other sources of UV radiation.
• 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 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.
• Devices shall be used in an environment of not more than Pollution Degree 2.
• For Module 1734-OW2, the conductors must be used with minimum conductor temperature rating of 85 °C.

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 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.
• This equipment is certified for use only within the surrounding air temperature range of -20...+55 °C (-4...+131 °F). The equipment must not be used outside of this range.
• Use only a soft dry anti-static cloth to wipe down equipment. Do not use any cleaning agents.

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.
• The Maximum Continuous Operating Temperature of the relay seal is 135 °C. It is recommended that the User periodically inspect these devices for any degradation of properties and replace the module if degradation is found.

WARNING: Exposure to some chemicals may degrade the sealing properties of materials used in the following devices: Relay K2 and K4, Epoxy for 1734-OW2, and Relay K1 through K4, Epoxy for 1734-OW4 and 1734-OW4K. We recommend that you periodically inspect these devices for any degradation of properties and replace the module if degradation is found.

Before You Begin

Note that the POINT I/OTM series C product can be used with the following:

• DeviceNet® and PROFIBUS adapters
• ControlNet® and EtherNet/IPTM adapters, using Studio 5000 Logix Designer® software, version 11 or later

See Figure 1 and Figure 2 to familiarize yourself with major parts of the module, noting that the wiring base assembly is one of the following:

• 1734-TB or 1734-TBS POINT I/O two-piece terminal base, which includes the 1734-RTB or 1734-RTBS removable terminal block, and 1734-MB mounting base
• 1734-TOP or 1734-TOPS POINT I/O one-piece terminal base

Figure 1: POINT I/O Module with 1734-TB or 1734-TBS Base. Components illustrated: 1. Module locking mechanism, 2. Slide-in writable label, 3. Insertable I/O module, 4. Removable terminal block (RTB) handle, 5. Removable terminal block with screw (1734-RTB) or spring clamp (1734-RTBS), 6. 1734-TB or 1734-TBS mounting base, 7. Interlocking side pieces, 8. Mechanical keying (orange), 9. DIN rail locking screw (orange), 10. Module wiring diagram.

Figure 2: POINT I/O Module with 1734-TOP or 1734-TOPS Base. Components illustrated: 1. Module locking mechanism, 2. Slide-in writable label, 3. Insertable I/O module, 4. Removable terminal block (RTB) handle, 5. One-piece terminal base with screw (1734-TOP) or spring clamp (1734-TOPS), 6. Interlocking side pieces, 7. Mechanical keying (orange), 8. DIN rail locking screw (orange), 9. Module wiring diagram.

Install the Mounting Base

To install the mounting base on the DIN rail (Allen-Bradley® part number 199-DR1; 46277-3; EN50022), proceed as follows.

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 mounting surface approximately every 200 mm (7.8 in.) and use end-anchors appropriately. Be sure to ground the DIN rail properly. See Industrial Automation Wiring and Grounding Guidelines, Rockwell Automation publication 1770-4.1, for more information.

WARNING: 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.

1. Position the mounting base vertically above the installed units (adapter, power supply or existing module).
2. Slide the mounting base down allowing the interlocking side pieces to engage the adjacent module or adapter.
3. Press firmly to seat the mounting base on the DIN rail. The mounting base snaps into place.

Install the Module

The module can be installed before or after base installation. Make sure that the mounting base is correctly keyed before installing the module into the mounting base. In addition, make sure the mounting base locking screw is positioned horizontal referenced to the base.

WARNING: When you insert or remove the module while backplane power is on, an electrical 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 electrical 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.

1. Use a bladed screwdriver to rotate the keyswitch on the mounting base clockwise until the number required for the type of module you are installing aligns with the notch in the base.
2. Make certain the DIN rail locking screw is in the horizontal position. You cannot insert the module if the locking mechanism is unlocked.
3. Insert the module straight down into the mounting base and press to secure. The module locks into place.

Install the Removable Terminal Block

A Removable Terminal Block (RTB) is supplied with your wiring base assembly. To remove, pull up on the RTB handle. This allows the mounting base to be removed and replaced as necessary without removing any of the wiring. To reinsert the Removable Terminal Block, proceed as follows:

WARNING: When you connect or disconnect the Removable Terminal Block with field side power applied, an electrical 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.

1. Insert the end opposite the handle into the base unit. This end has a curved section that engages with the wiring base.
2. Rotate the terminal block into the wiring base until it locks itself in place.
3. If an I/O module is installed, snap the RTB handle into place on the module.

Remove a Mounting Base

To remove a mounting base, you must remove any installed module, and the module installed in the base to the right. Remove the Removable Terminal Block, if wired.

WARNING: When you insert or remove the module while backplane power is on, an electrical 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 electrical 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.

WARNING: When you connect or disconnect the Removable Terminal Block (RTB) with field-side power applied, an electrical arc can occur. This can cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

1. Unlatch the RTB handle on the I/O module.
2. Pull on the RTB handle to remove the removable terminal block.
3. Press on the module lock on the top of the module.
4. Pull on the I/O module to remove from the base.
5. Repeat steps 1, 2, 3 and 4 for the module to the right.
6. Use a small bladed screwdriver to rotate the orange, base locking screw to a vertical position. This releases the locking mechanism.
7. Lift straight up to remove.

Wire the Module

WARNING: If you connect or disconnect wiring while the field-side power is on, an electrical 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.

Wiring for 1734-OW2

Diagram for 1734-OW2 shows Output 0A, 0B, 1A, 1B. Pin C is Common, Pin V is Supply. Relay contacts are not directly powered by the internal power bus. Load power from the internal power bus is available for the 1734-OW2 only. Connect to pins 6 and 7 for V supply, and to pins 4 and 5 for V common.

Wiring for 1734-OW4, 1734-OW4K

Diagrams for 1734-OW4 and 1734-OW4K show Output 0A, 0B, 1A, 1B, 2A, 2B, 3A, 3B. Load power must be provided by an external power source. The 1734-OW4 and 1734-OW4K cannot be powered from the internal power bus.

Channel to Output Pin Mapping:

Module Communication and Status

Communicate with the Module

POINT I/O modules send (consume) and receive (produce) I/O data (messages). You map this data onto the processor memory. These output modules do not produce input data (scanner Rx). These modules consume 1 byte of I/O data (scanner Tx).

Default Data Map for 1734-OW2

Message size: 1 Byte

Consumes (scanner Tx): Channel state (0 = Off, 1 = On) for Ch1, Ch0.

Default Data Map for 1734-OW4, 1734-OW4K

Message size: 1 Byte

Consumes (scanner Tx): Channel state for Ch3, Ch2, Ch1, Ch0.

Interpret Status Indicators

See Figure 3 and Table 1 for information on how to interpret the status indicators.

Figure 3: Status Indicators for POINT I/O 2 and 4 Relay Output Modules. Shows status indicators for 1734-OW2 and 1734-OW4, 1734-OW4K, including Module Status, Network Status, NODE, and Relay Output Status.

Table 1 - Indicator Status for Modules

Specifications

General Specifications

(1) Surge Suppression - Connecting surge suppressors across your external inductive load will extend the life of the module. For additional details, see the Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley publication 1770-4.1.

(2) The module complies to Ex when used at or below 120V AC.

(3) For maximum rating at voltages between the maximum design value and 120V, the maximum make and break ratings are to be obtained by dividing the volt-amperes rating by the application voltage. For voltages below 120V, the maximum make current is to be the same as for 120V, and the maximum break current is to be obtained by dividing the break volt-amperes by the application voltage, but these currents are not to exceed 2 A.

(4) Use this conductor category information for planning conductor routing as described in Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.

(5) Use this Conductor Category information for planning conductor routing as described in the appropriate System Level Installation Manual.

Environmental Specifications

Certifications

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

Certifications (Continued)

Support Resources

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.

Trademarks: Allen-Bradley, expanding human possibility, FactoryTalk, POINT I/O, Rockwell Automation, Studio 5000 Logix Designer, and TechConnect are trademarks of Rockwell Automation, Inc. ControlNet, DeviceNet, and EtherNet/IP are trademarks of ODVA, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.