Allen-Bradley 1794-IM8 Bedienungsanleitung

Installation Instructions

Original Instructions

FLEX I/O 220V AC Digital Input and Output

Modules

Catalog Numbers

1794-IM8, 1794-OM8

Topic Page

Important User Information 2

Environment and Enclosure 3

North American Hazardous Location Approval 4

Prevent Electrostatic Discharge 5

Installing Your 220V AC Digital Input or Output Module 7

Configure Your AC Module 10

Specifications 12

Derating Curves 17

2Rockwell Automation Publication 1794-IN104C-EN-P - July 2018

FLEX I/O 220V AC Digital Input and Output Modules

Important User Information

Solid-state equipment has operational characteristics differing from those of electromechanical

equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid-state Controls

(Publication SGI-1.1 available from your local Rockwell Automation sales office or online at

http://www.rockwellautomation.com/literature/) describes some important differences between solid-

state equipment and hard-wired electromechanical devices. Because of this difference, and also because of

the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment

must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages

resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the

many variables and requirements that are associated with any particular installation, Rockwell

Automation, Inc. cannot assume responsibility or liability for actual use based on the examples

and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,

equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of

Rockwell Automation, Inc., is prohibited.

Throughout this manual, when necessary, we use notes to make you aware of safety considerations.

WARNING: Identifies information about practices or circumstances that can cause an

explosion in a hazardous environment, which may lead to personal injury or death, property

damage, or economic loss.

ATTENTION: Identifies information about practices or circumstances that can lead to

personal injury or death, property damage, or economic loss. Attentions help you identify a

hazard, avoid a hazard and recognize the consequences.

SHOCK HAZARD: Labels may be on or inside the equipment (for example, drive or motor)

to alert people that dangerous voltage may be present.

BURN HAZARD: Labels may be on or inside the equipment (for example, drive or motor) to

alert people that surfaces may reach dangerous temperatures.

IMPORTANT Identifies information that is critical for successful application and understanding of

the product.

Rockwell Automation Publication 1794-IN104C-EN-P - July 2018 3

FLEX I/O 220V AC Digital Input and Output Modules

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 5V A 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: 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.

4Rockwell Automation Publication 1794-IN104C-EN-P - July 2018

FLEX I/O 220V AC Digital Input and Output Modules

North American Hazardous Location Approval

The following modules are North American Hazardous Location approved:

1794-IM8, 1794-OM8.

The Following Information Applies When

Operating This Equipment In Hazardous Locations.

Informations sur l’utilisation de cet équipement en

environnements dangereux.

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.

Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne

conviennent qu'à une utilisation en environnements de Classe

I Division 2 Groupes A, B, C, D dangereux et non dangereux.

Chaque produit est livré avec des marquages sur sa plaque

d'identification qui indiquent le code de température pour les

environnements dangereux. Lorsque plusieurs produits sont

combinés dans un système, le code de température le plus

défavorable (code de température le plus faible) peut être

utilisé pour déterminer le code de température global du

système. Les combinaisons d'équipements dans le système

sont sujettes à inspection par les autorités locales qualifiées

au moment de l'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.

AVERTISSEMENT:

Risque d’Explosion –

• Couper le courant ou s'assurer que

l'environnement est classé non

dangereux avant de débrancher

l'équipement.

• Couper le courant ou s'assurer que

l'environnement est classé non

dangereux avant de débrancher les

connecteurs. Fixer tous les connecteurs

externes reliés à cet équipement à

l'aide de vis, loquets coulissants,

connecteurs filetés ou autres moyens

fournis avec ce produit.

• La substitution de composants peut

rendre cet équipement inadapté à une

utilisation en environnement de

Classe I, Division 2.

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.

Rockwell Automation Publication 1794-IN104C-EN-P - July 2018 5

FLEX I/O 220V AC Digital Input and Output Modules

Prevent Electrostatic Discharge

Special Conditions for Safe Use

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.

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. Refer to Industrial Automation Wiring and Grounding Guidelines,

publication 1770-4.1, for more information.

• Do not remove or replace an Adapter Module while power is applied.

Interruption of the backplane can result in unintentional operation or

machine motion.

• Do not remove or replace a terminal base unit while power is applied.

Interruption of the backplane cab result in unintentional operation or

machine motion.

• If this equipment is used in a manner not specified by the manufacturer, the

protection provided by the equipment may be impaired.

6Rockwell Automation Publication 1794-IN104C-EN-P - July 2018

FLEX I/O 220V AC Digital Input and Output Modules

Electrical Safety Considerations

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.

• If 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.

ATTENTION:

• This equipment is certified for use only within the surrounding air temperature

range of 0…55 °C (32…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.

At the end of its life, this equipment should be collected separately from any

unsorted municipal waste.

Rockwell Automation Publication 1794-IN104C-EN-P - July 2018 7

FLEX I/O 220V AC Digital Input and Output Modules

Installing Your 220V AC Digital Input or Output Module

The module mounts on a 1794 terminal base.

1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position 8

as required for this type of module.

2. Ensure that the Flexbus connector (3) is pushed all the way to the left to

connect with the neighboring terminal base/adapter. Yo u c a nn o t in s t a l l

the module unless the connector is fully extended.

3. Make sure the pins on the bottom of the module are straight so they will

align properly with the connector in the terminal base.

Description Description

1Keyswitch 5Alignmentbar

2Terminalbase 6Groove

3 Flexbus connector 7 Latching mechanism

4Module

ATTENTION: During mounting of all devices, be sure that all debris (metal chips,

wire strands, etc.) is kept from falling into the module. Debris that falls into the

module could cause damage on power up.

8Rockwell Automation Publication 1794-IN104C-EN-P - July 2018

FLEX I/O 220V AC Digital Input and Output Modules

4. Position the module (4) with its alignment bar (5) aligned with the

groove (6) 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 (7) is locked into

the module.

Connecting Wiring for your 1794-IM8 and 1794-OM8 Module

1. Connect individual input or output wiring to numbered terminals on

row (B) as indicated in the Wiring Connections for 1794-IM8 and

1794-OM8 table.

2. 1794-IM8 – Connect the associated 220V AC L1 power lead of the

input device to the corresponding odd-numbered terminal (C-1, 3, 5, 7,

9, 11, 13, or 15) on row (C) for each input as indicated in the Wiring

Connections for 1794-IM8 and 1794-OM8 table. (The 220V L1 power

terminals of row (C) are internally connected together.)

1794-OM8 – Connect the associated 220V AC common L2 lead of the

output device to the corresponding odd-numbered terminal (C-1, 3, 5,

7, 9, 11, 13, or 15) on row (C) as indicated in the Wiring Connections

for 1794-IM8 and 1794-OM8 table. (The 220V L2 commons of odd-

numbered terminals on row (C) are internally connected together.)

3. Connect 220V AC power (L1) to terminal 34 on the row (C).

4. Connect 220V AC common (L2) to terminal 16 on the row (B).

5. If daisychaining L1 power to the next terminal base, connect a jumper

from terminal 51 (220V AC L1) on this base unit to terminal 34 on the

next base unit.

6. If continuing 220V AC common (L2) to the next base unit, connect a

jumper from terminal 33 (220V common L2) on this base unit to

terminal 16 on the next base unit.

Rockwell Automation Publication 1794-IN104C-EN-P - July 2018 9

FLEX I/O 220V AC Digital Input and Output Modules

Wiring Connections for 1794-IM8 and 1794-OM8

1794-IM8 1794-OM8

1794-TBN 1794-TBN, 1794-TBNF

Input(1)

(1) C-1, 3, 5, 7, 9, 11, 13, and 15 on the 1794-TBN are internally connected in the module to 220V AC L1.

Input Terminal 220V AC Supply Output Output Terminal Common

Input 0 B-0 C-1(1) Output 0 B-0 C-1(2)

(2) C-1, 3, 5, 7, 9, 11, 13, and 15 on the 1794-TBN are internally connected in the module to 220V AC common L2.

Input 1 B-2 C-3(1) Output 1 B-2 C-3(2)

Input 2 B-4 C-5(1) Output 2 B-4 C-5(2)

Input 3 B-6 C-7(1) Output 3 B-6 C-7(2)

Input 4 B-8 C-9(1) Output 4 B-8 C-9(2)

Input 5 B-10 C-11(1) Output 5 B-10 C-11(2)

Input 6 B-12 C-13(1) Output 6 B-12 C-13(2)

Input 7 B-14 C-15(1) Output 7 B-14 C-15(2)

B = Even-numbered Input terminals 0...14,

AC common terminals 16 and 33

C = Power terminals C-34 and C-51, and odd-numbered

input terminals 1...15

B = Even-numbered Output terminals 0...14,

AC common terminals 16 and 33

C = Power terminals C-34 and C-51, and odd-

numbered terminals 1...15 on row C.

10 Rockwell Automation Publication 1794-IN104C-EN-P - July 2018

FLEX I/O 220V AC Digital Input and Output Modules

1794-TBN Terminal Base Wiring for 1794-IM8 and 1794-OM8

Configure Your AC Module

Image Table Memory Map for the 1794-IM8 Module

Dec 1514131211109876543210

Oct 17161514131211107 6 5 4 3 2 1 0

Read Notused–setto0 I7I6I5I4I3I2I1I0

Write Not used – set to 0 Filter time FT

Where I = Input status

FT = Input filter time

Image Table Memory Map for the 1794-OM8 Module

Dec 1514131211109876543210

Oct 17161514131211107 6 5 4 3 2 1 0

Read Not used – set to 0

Write Notused–setto0 O7O6O5O4O3O2O1O0

Where O = Output

16 0

15 51

Even Numbered I/O Terminals 0 thru 14

Odd Numbered I/O Terminals 1 thru 15

(1794-TBN shown)

L1 = 220V AC power - Connect to terminal C-34

L2 = 220V AC common - Connect to terminal B-16

Use B-33 and C-51 for daisychaining to the next terminal base unit

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