Allen-Bradley 1794-IV16 FLEX I-O Digital Sourcing Input and Sinking Output Modules Instruction Manual

Allen-Bradley 1794-IV16 FLEX I-O Digital Sourcing Input and Sinking

Output Modules

Installation Instructions

FLEX I/O Digital Sourcing Input and Sinking Output Modules

Summary of Changes

ATTENTION: Read this document and the documents listed in the Additional Resources section about the 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 the 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

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. Theenclosure 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 additional installation requirements.
•  NEMA Standard 250 and EN/IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosures.

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 the Industrial Automation Wiring and Grounding Guidelines, Rockwell Automation publication 1770-4.1, for more information.

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.

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.

European Hazardous Location Approval

The 1794-IV16, 1794-OV16, and 1794-OV16P modules are European Zone 2 approved:

•  Are intended for use in potentially explosive atmospheres as defined by 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 Annex II to this Directive.
•  Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 60079-15 and EN 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 Annex II to
• EU Directive 2014/34/EU. See the EU Declaration of Conformity at rok.auto/certifications for details.
•  The type of protection is Ex nA IIC T3 Gc (for 1794-IV16) and Ex nA IIC T4 Gc (for 1794-OV16, 1794-OV16P) according to EN 60079-15.
•  Comply with Standards EN 60079-0:2012, EN 60079-15:2010, reference certificate number LCIE 01 ATEX 6020X.
•  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 ATEX directive 2014/34/EU.

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 ATEX Zone 2 certified enclosure with a minimum ingress protection rating of at least IP54 (in accordance with EN 60079-0) and used in an environment of not more than Pollution Degree 2 (as defined in EN 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.
•  Provision shall be made to prevent the rated voltage from being exceeded by transient disturbances of more than 140% of the peak rated voltage when applied in Zone 2 environments.
•  The instructions in the user manual shall be observed.
•  This equipment must be used only with ATEX-certified Rockwell Automation backplanes.
•  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.
•  Earthing is accomplished through mounting of modules on rail.
•  Devices shall be used in an environment of not more than Pollution Degree 2.

Install Your Relay Output Module

The FLEX™ I/O module mounts on 1794-TB3 or 1794-TB3S terminal bases.

1.  Rotate the keyswitch (3) on the terminal base (4) clockwise to position 9 as required for this type of module.

2.  Make certain the Flexbus connector (1) is pushed all the way to the left to connect with the neighboring terminal base and adapter. You cannot install the module unless
   the connector is fully extended.

3.  Make sure the pins on the bottom of the module are straight so they align properly with the connector in the terminal base.

4.  Position the module (7) with its alignment bar (6) aligned with the groove (5) on the terminal base.

5.  Press firmly and evenly to seat the module in the terminal base unit. The module is seated when the latching mechanism (2) is locked into the module.

connect Wiring for the 1794-IV16, 1794-OV16, and 1794-OV16P Modules

1.  Connect individual input or output wiring to numbered terminals on the 0…15 row (A) as shown in Figure 1 and Table 1.
2.  For 1794-IV16 – Connect the associated input device common to the corresponding terminal on the 16…33 row. (B) for each input as indicated in Table 1. Commons are internally connected together. If using 3-wire input devices, also connect the associated input power lead to the corresponding terminal on the 34…51 row (C). For 1794-OV16, 1794-OV16P – Connect the associated +V DC power lead of the output device to the corresponding terminal on the 34…51 row (C) for each output as indicated in Table 1. The +V power terminals of row (C) are internally connected together.
3. Connect +24V DC power to terminal 34 on the 34…51 row (C).
4.  Connect -V DC common to terminal 16 on the 16…33 row (B).
5.  If daisy-chaining power to the next terminal base, connect a jumper from terminal 51 (+V DC) on this base unit to terminal 34 on the next base unit.
6.  If continuing -V DC common to the next base unit, connect a jumper from terminal 33 (common) on this base unit to terminal 16 on the next base unit.

Connect Wiring for the 1794-TB3 and 1794-TB3S Terminal Bases

Wire Connections for 1794-IV16, 1794-OV16, and 1794-OV16P Modules

Channel| Signal| Power Terminal| Common Terminal (1)
---|---|---|---
1794-OV16, 1794-OV16P, 1794-IV16 (1)| 1794- IV16
0| A-0| C-35| B-17
1| A-1| C-36| B-18
2| A-2| C-37| B-19
3| A-3| C-38| B-20
4| A-4| C-39| B-21
5| A-5| C-40| B-22
6| A-6| C-41| B-23
7| A-7| C-42| B-24
8| A-8| C-43| B-25
9| A-9| C-44| B-26
10| A-10| C-45| B-27
11| A-11| C-46| B-28
12| A-12| C-47| B-29
13| A-13| C-48| B-30
14| A-14| C-49| B-31
15| A-15| C-50| B-32
+V DC| C-34…C-51 are internally connected together.
Common| B-16…B-33 are internally connected together.

wire and 3-wire Input Wiring for 1794-IV16 Module

Configure Your Input Module

Dec| 15| 14| 13| 12| 11| 10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Oct| 17| 16| 15| 14| 13| 12| 11| 10| 7| 6| 5| 4| 3| 2| 1| 0
Read 0| I15| I14| I13| I12| I11| I10| I9| I8| I7| I6| I5| I4| I3| I2| I1| I0
Read 1| C = Counter Input value of input 15
Write 1| Not used| CF| CR| NU| Input Filter FT 0…15| Not used

Set the Input Filter Time for 1794-IV16 Module For example, to set a filter time of 8 milliseconds for a DC input module at address rack 1, module group 0, in configuration word 3, set bits 08, 09, and 10 as shown in Table 3. Figure 3 – Example Filter Time Setting Input Filter Time

(00…17)
0| 0| 0| Filter Time 0 (Default)| 0.25 ms
0| 0| 1| Filter Time 1| 0.5 ms
0| 1| 0| Filter Time 2| 1 ms
0| 1| 1| Filter Time 3| 2 ms
1| 0| 0| Filter Time 4| 4 ms
1| 0| 1| Filter Time 5| 8 ms
1| 1| 0| Filter Time 6| 16 ms
1| 1| 1| Filter Time 7| 32 ms

Configure Your Output Module

Dec| 15| 14| 13| 12| 11| 10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Oct| 17| 16| 15| 14| 13| 12| 11| 10| 7| 6| 5| 4| 3| 2| 1| 0
Read 0| Not used
Write 1| O15| O14| O13| O12| O11| O10| O9| O8| O7| O6| O5| O4| O3| O2| O1| O0

Specifications

isolation between individual channels
Input filter time(1) Off to On

On to Off

| 0.25 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms

0.25 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms

0.25 ms default – Selectable using configuration word 3

Flexbus current| 30 mA
Power dissipation, max| 5.7 W @ 31.2V DC
Thermal dissipation, max| 19.4 BTU/hr @ 31.2V DC
Indicators

(field side indication, customer device driven)

| 16 yellow status indicators

Output Specifications – 1794-OV16, 1794-OV16P

isolation between individual channels
Output signal delay(1) Off to On, max On to Off, max| ****

0.5 ms

1.0 ms

Flexbus current| 80 mA
Power dissipation, max| 4.2 W @ 31.2V DC
Thermal dissipation, max| 14.3 BTU/hr @ 31.2V DC
Indicators (field side indication, logic driven)| 16 yellow status indicators
Fusing| 1794-OV16 – Module outputs are not fused. Fusing is recommended. If fusing is desired, you must provide external fusing. Use SAN-O MQ4-800 800 mA fuses

1794-OV16P – Outputs are electronically protected.

General Specifications

External DC power

Voltage range

Supply voltage Supply current

| ****

10…31.2V DC (includes 5% AC ripple) See derating curve for 1794-IV16

24V DC nominal

1794-OV16, 1794-OV16P – 49 mA @ 24V DC (21…65 mA)

Dimensions, approx. (H x W x D) (with module installed)| 94 x 94 x 69 mm

(3.7 x 3.7 x 2.7 in.)

Weight, approx.| 1794-IV16 – 90 g (3.17 oz.)

1794-OV16 – 77 g (2.72 oz.)

1794-OV16P – 81 g (2.86 oz.)

Wiring category(1)| 2
Wire size| 4 mm2 (12 AWG) stranded copper wire rated at 75 °C (167 °F) or higher 1.2 mm (3/64 inch) insulation maximum
Enclosure type rating| None (open-style)
North American temp code| 1794-IV16 – T3C

1794-OV16, 1794-OV16P – T4A

ATEX temp code| 1794-OV16, 1794-OV16P – T4

1794-IV16 – T3

Environmental Specifications

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): 0…55 °C (32…131 °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
Attribute| Value
---|---
Emissions| IEC 61000-6-4
ESD immunity| IEC 61000-4-2:

4 kV contact discharges 8 kV air discharges

Radiated RF immunity| IEC 61000-4-3:

10V/m with 1 kHz sine-wave 80% AM from 30…1000 MHz 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz

EFT/B immunity| IEC 61000-4-4:

±2 kV at 5 kHz on signal ports

Surge transient immunity| IEC 61000-4-5:

±1kV line-earth(CM) on shielded ports

±1kV line-line(DM) and ±2kV line-earth(CM) on signal ports

Conducted RF immunity| IEC 61000-4-6:

10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz on shielded signal ports

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.

CE

| European Union 2014/30/EU EMC Directive, compliant with: EN 61326-1; Meas./Control/Lab., Industrial Requirements EN 61000-6-2; Industrial Immunity

EN 61000-6-4; Industrial Emissions

EN 61131-2; Programmable Controllers (Clause 8, Zone A & B) European Union 2011/65/EU RoHS, compliant with:

EN 63000; Technical documentation

Ex

| European Union 2014/34/EU ATEX Directive, compliant with: EN 60079-0; General Requirements

EN 60079-15; Potentially Explosive Atmospheres, Protection “n” Ex nA IIC T3 Gc – 1794-IV16

Ex nA IIC T4 Gc – 1794-OV16, 1794-OV16P

LCIE 01 ATEX 6020 X

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

CCC

| CNCA-C23-01:2019 䔂ⵖ䚍❡ㅷ雩霆㹊倶錞ⴭ ꣈旘歏孞痗ざ GB 3836.1-2010 旘挽䚍梠㞯 痦1鿈ⴔ霃㢊 鸑欽銳宠

GB 3836.8-2014 旘挽䚍梠㞯 痦8鿈ⴔ歋n㘗⥂䫡涸霃㢊

CNCA-C23-01:2019 CCC Implementation Rule Explosion-Proof Electrical Products, compliant with: GB 3836.1-2010 Explosive atmospheres – Part 1: Equipment- General requirements

GB 3836.8-2014 Explosive atmospheres – Part 8: Equipment protection by type of protection “n”

Morocco| Arrêté ministériel n° 6404-15 du 29 ramadan 1436 – EMC
EAC| Russian Customs Union TR CU 020/2011 EMC Technical Regulation

Voltage| Temperature °C (max.)|  | Voltage| Temperature °C (max.)
---|---|---|---|---
Normal| Other| Normal| Other
31.2| 37| 32|  | 29.0| 51| 45
30.5| 41| 36|  | 28.5|

55

| 48
30.0| 45| 39|  | 28.0| 51
29.5| 48| 42|  | 27.5| 55
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References

• Product Certifications | Rockwell Automation
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