Rockwell Automation 1746-XXXX Installation Instructions

Installation Instructions

SLC 500 Digital I/O Modules

Input Catalog Numbers 1746-IA4, 1746-IA8, 1746-IA16, 1746-IB8,

1746-IB16, 1746-IC16, 1746-IG16, 1746-IH16, 1746-IM4, 1746-IM8,
1746-IM16, 1746-IN16, 1746-ITB16, 1746-ITV16, 1746-IV8, 1746-IV16

Output Catalog Numbers 1746-OA8, 1746-OA16, 1746-OAP12, 1746-OB8,
1746-OB6EI, 1746-OB16, 1746-OB16E, 1746-OBP8, 1746-OBP16,
1746-OG16, 1746-OV8, 1746-OV16, 1746-OVP16, 1746-OW4, 1746-OW8,
1746-OW16, 1746-OX8

Combination Input/Output Catalog Numbers 1746-IO4, 1746-IO8,
1746-IO12, 1746-IO12DC

Table of Contents

Topic Page

Important User Information 2

North American Hazardous Location Approval 3

Environment and Enclosure 4

Prevent Electrostatic Discharge 4

Install and Remove the Module 5

Octal Label Kit Installation (for PLC processors only) 6

Wiring Diagrams 17

Apply the Octal Filter Label 6

Apply the Octal Door Label 6

Removable Terminal Blocks 6

Recovery From Blown Fuse/Processor Fault/Processor Shutdown 13

Replacement Fuse Recommendations 13

Replace Fuses 14

Electronically Protected Modules (1746-OB6EI and 1746-OB16E) 14

Specifications 29

2 SLC 500 Digital I/O 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
Automation sales office or online at http://www.rockwellautomation.com/literature/
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 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.

available from your local Rockwell

) describes some important differences

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.

Overview

In addition to providing the module’s electrical specifications, this document tells you how to:

• install the module into a chassis.

• wire the module’s terminal block.

• install the Octal Filter Label.

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 3

North American Hazardous Location Approval

The following modules are North American Hazardous Location approved: 1746-IA4,
1746-IA8, 1746-IA16, 1746-IB8, 1746-IB16, 1746-IC16, 1746-IG16, 1746-IH16, 1746-IM4,
1746-IM8, 1746-IM16, 1746-IN16, 1746-ITB16, 1746-ITV16, 1746-IV8, 1746-IV16,
1746-OA8, 1746-OA16, 1746-OAP12, 1746-OB8, 1746-OB6EI, 1746-OB16, 1746-OB16E,
1746-OBP8, 1746-OBP16, 1746-OG16, 1746-OV8, 1746-OV16, 1746-OVP16, 1746-OW4,
1746-OW8, 1746-OW16, 1746-OX8, 1746-IO4, 1746-IO8, 1746-IO12, 1746-IO12DC.

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 any component
may impair suitability for Class
I, Division 2.

• If this product contains
batteries, they must only be
changed in an area known to
be nonhazardous.

Informations sur l’utilisation de cet
équipement en environnements
dangereux:

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.

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 tout
composant peut rendre cet
équipement inadapté à une
utilisation en environnement de
Classe I, Division 2.

• S'assurer que l'environnement
est classé non dangereux avant
de changer les piles.

Publication 1746-IN027D-EN-P - December 2012

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 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. 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 additional 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
installation requirements.

• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the degrees of
protection provided by enclosures.

4 SLC 500 Digital I/O Modules

, for additional

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.

• 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.

Publication 1746-IN027D-EN-P - December 2012

IMPORTANT

Slot 1

A

B

D

C

Max 2 mm

2

(14 AWG)
Max 2 wires per terminal
Max torque: 0.9 Nm (8 lb-in.)

1. Disconnect power.

2. Align the circuit board of module

with the chassis card guide. (A)

3. Slide the module into the chassis
until the bottom tabs lock into place.
(B)

4. Route the wires down and away from
the module, securing them with the
wire tie. (C)

5. Cover all unused slots with Card
Slot Filler, catalog number 1746-N2,
to keep the chassis free from debris.

6. To remove the module, press and
hold the module release located on
each self-locking tab, and slide the
module out of the chassis slot. (D)

Module Installation

Install and Remove the Module

ATTENTION: Never install, remove, or wire modules with power applied to chassis.

The first slot of the chassis is reserved for the processor or the 1747-ASB module.

Follow these steps to install the module:

SLC 500 Digital I/O Modules 5

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6 SLC 500 Digital I/O Modules

TIP

Octal Label Kit Installation (for PLC processors only)

The octal label kit consists of an octal filter label and a door label. Use these octal labels to replace
the decimal labels that are attached to the I/O modules.

The octal label kit can be obtained from your Allen-Bradley distributor. The octal
kit is ordered based on the catalog number of the I/O module.

Please refer to the SLC 500 Modular Hardware Style User Manual, publication

1747-UM011

ATTENTION: Do not touch or remove the terminal block when the SLC 500 system is
powered. Contact with AC line potential may cause injury to personnel.

, for a listing of octal label kit catalog numbers.

Apply the Octal Filter Label

1. Remove the octal filter label from its paper carrier.

2. Align the octal filter label numbers horizontally to the module color bar and over the

decimal filter numbers.
Refer to Installing Octal Labels on page 7 for filter label placement.

3. Apply the octal label to the filter.

4. Press firmly to be sure that the label adheres properly.

Apply the Octal Door Label

1. Remove the octal door label from its paper carrier.

2. Align the octal label directly over the decimal door label on the inside of the door.

Refer to Installing Octal Labels

3. Press firmly to be sure that the label adheres properly.

on page 7 for door label placement.

Removable Terminal Blocks

Colored terminal blocks are removable by loosening the upper and lower retaining screws. Black
terminal blocks are not removable.

Publication 1746-IN027D-EN-P - December 2012

Installing Octal Labels

OCTAL

1746-xxxx (OCTAL)
Octal Door Label

1746-xxxx

Octal Filter Label

Upper retaining screw max torque
= 0.6 Nm (5.3 lb-in.)

Module Color Bar

Lower retaining screw max torque
= 0.6 Nm (5.3 lb-in.)

Removable

Terminal Block

Beveled Edge

Terminal Wiring

Max 2mm

2

(14 AWG)
Max 2 wires per terminal
Max torque: 0.9 Nm (8 lb-in.)

SLC 500 Digital I/O Modules 7

Fuse Protection and Blown Fuse Diagnostics

This section describes fusing characteristics for the following modules:

• 1746-OBP16

• 1746-OVP16

• 1746-OAP12

Fuse Protection (1746-OBP16 and 1746-OVP16 modules)

The fuse on the 1746-OBP16 and 1746-OVP16 modules (shown on Location of Jumpers and

Fuses for 1746-OBP16 and 1746-OVP16 Modules on page 9) provides short-circuit protection

for 13 mm
output channel, it is likely that the transistor associated with that channel will be damaged. In
this event, the module should be replaced or the load moved to a spare output channel.

The fuse does not provide overload protection. In the event of an overload on an output channel,
it is likely that the fuse will not blow and the transistor associated with that channel will be
damaged. To provide overload protection for your application, user-supplied fuses should be
installed externally and properly sized to match your individual load characteristics.

2

(16 AWG) or larger wiring to external loads. In the event of a short circuit on an

Publication 1746-IN027D-EN-P - December 2012

8 SLC 500 Digital I/O Modules

Fuse Protection (1746-OAP12 modules)

A fuse is provided on each common of the 1746-OAP12 module (shown on Location of

Jumpers and Fuses for 1746-OAP12 Module on page 10) for a total of two fuses. The fuses are

designed to protect the module from short-circuit conditions. The fuse does not provide
overload protection. In the event of an overload on an output channel, it is likely that the fuse
will not blow and the output device associated with that channel will be damaged. To provide
overload protection for your application, user-supplied fuses should be installed externally.

The recommended fuse for overload protection is SAN-O HT. Select the fuse rating according
to your load. Do not use HT fuses rated higher than 2.0 Amps.

Blown Fuse Diagnostics

If the fuse blows on the 1746-OBP16, 1746-OVP16, or 1746-OAP12 module, the following
occurs:

• The blown fuse LED indicator will illuminate, provided power (5V DC via backplane
and load power via external supply) is applied to the module.

• A processor error will occur if JP1 connects pins 2 and 3. (See figures on page 9 and

.)

page 10

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 9

F
U
S
E

OUTPUT

WHEN FUSE OPENS

PROCESSOR
CONTINUES

PROCESSOR
FAULT S

REPLACEMENT FUSE
LITTLEFUSE 322010 or 332010

A.B. CAT. NO. 1746-F9

3

2

21

1
2

3

Left side view

Location for 1746-OBP16 Fuse (F1)

Jumper for processor
notification (JP1)

Brown fuse LED
Indicator

Jumper settings and fuse
replacement information

Location for
1746-OVP16
Fuse (F1)

Front view

Location of Jumpers and Fuses for 1746-OBP16 and 1746-OVP16 Modules

Publication 1746-IN027D-EN-P - December 2012

Location of Jumpers and Fuses for 1746-OAP12 Module

12

3

OUTPUT

1

JP1

23

JP1

F
U
S
E

REPLACEMENT FUSE:
SAN-O HQ 6.3A

A-B CAT. NO. 1746-F9

2

WHEN FUSE OPENS

F1

F2

Jumper for Processor
Notification (JP1)

Left side view

PROCESSOR
CONTINUES

PROCESSOR
FAULT

Jumper Settings and
Fuse Replacement Information

Blown Fuse LED
indicator

Front View

10 SLC 500 Digital I/O Modules

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 11

JP1

32 1

JP1

1

2

3

1746-OAP12

1746-OBP16 and 1746-OVP16

JP1 is in Factory Set position. There is no
processor notification for blown fuse.

Processor Operation in Case of Blown Fuse – Processor Continues

The factory set position for JP1 is shown in the following diagram. For this JP1 configuration
the processor operation will continue if the module fuse blows.

Processor Operation in Case of Blown Fuse – Processor Faults

The Processor Fault position for JP1 is shown on the following page. For this JP1 configuration,
the processor generates a nonrecoverable error for all SLC 500 processors. For a nonrecoverable
error, note the following:

• Processor operation halts and the processor fault light flashes.

• All outputs are reset to OFF.

• The processor major fault bit S:1/13 is set.

• Monitor processor status file word S:6 for error code xx58 for SLC 500, and SLC 5/01
processors, and error code xx60 for SLC 5/02 and later processors.

Publication 1746-IN027D-EN-P - December 2012

JP1 in Processor Fault Notification Position

IMPORTANT

JP1 is in processor fault
position. Processor is notified
when fuse is blown.

JP1

1

2

3

1746-OBP16 and 1746-OVP16

1746-OAP12

1

2

3

JP1

When using SLC 5/02 processor and later processors, a user-fault routine
cannot be used to clear the major fault bit.

12 SLC 500 Digital I/O Modules

ATTENTION: For 1746-OBP16 and 1746-OVP16 modules, all outputs on the module are

OFF if the fuse blows. For the 1746-OAP12 module, all outputs on the same common as the
blown fuse are OFF. If processor operation is allowed to continue after a blown fuse,
extreme care should be taken to be sure the safety of personnel and guard against
equipment damage.

For additional information on processor fault codes and user-fault routines refer to the following
publications:

• Your programming device’s reference manual

• HHT User Manual, publication 1747-NP002:

• Chapter 28, Troubleshooting Faults

• Chapter 29, Understanding the Fault Routine

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 13

The following table defines operation of all SLC 500 processors in the case of a blown fuse in
1746-OBP16, 1746-OVP16, and 1746-OAP12 modules.

Processor Operation After a Blown Fuse (1746-OBP16, 1746-OVP16, and
1746-OAP12 modules)

JP1 Set to Processor Continues JP1 Set to Processor Faults

No error. Processor continues with 1746-OBP16
and 1746-OVP16 outputs de-energized.
1746-OAP12 outputs, on the same common as the
blown fuse, are de-energized.

Nonrecoverable error. Processor operations stop and all
outputs reset to OFF.

Recovery From Blown Fuse/Processor Fault/Processor Shutdown

Processor operation will stop under the following conditions:

• The output module fuse blows due to a short circuit.

• JP1 is set to the Processor Faults position (pins 2 and 3 connected).

If the above conditions occur, the following procedures should be used for recovery.

1. Follow fuse replacement procedures described on page 14.

2. Clear the processor major fault bit S:1/13.

3. Clear processor status file S:6 major error code (optional).

4. Return the processor to Run mode.

For additional information on processor fault codes and clearing processor fault bits, refer to the
following user manuals:

• Your programming device’s reference manual

• HHT User Manual, publication 1747-NP002

• Chapter 28, Troubleshooting Fault

• Chapter 29, Understanding the Fault Routine

Replacement Fuse Recommendations

Use the following replacement fuses:

• 1746-OBP16 and 1746-OVP16 modules – Littelfuse #322010,10A or #332010,10A.
This fuse is required to maintain UL/CSA rating. Replacement Fuse Kit is catalog
number
1746-F8 (five fuses per kit).

• 1746-OAP12 module - Use SAN-O HQ 6.3A for replacement. This fuse is required to
maintain UL/CSA rating. Replacement Fuse Kit is catalog number
1746-F9 (five fuses per kit).

Publication 1746-IN027D-EN-P - December 2012

14 SLC 500 Digital I/O Modules

IMPORTANT

Replace Fuses

ATTENTION: Never install, remove, or wire modules with power applied to chassis.

1. Remove SLC 500 system power and correct the conditions causing the short circuit.

2. Remove the output module from the chassis.

3. Remove the fuse.

• 1746-OBP16 and 1746-OVP16 modules: Use a wide-tipped, slotted-head

screwdriver to remove the blown fuse. Slide the screwdriver tip under the fuse and
use a twisting motion to pry the fuse from the fuse clip. Use care so that the printed
circuit board and surrounding electronics are not damaged.

• 1746-OAP12 module: A fuse holder is provided with each fuse. Simply grasp the

fuse holder with needle-nose pliers, or your fingers, and pull it out.

4. Replace the fuse.

• 1746-OBP16 and 1746-OVP16 modules: Center the replacement fuse over the fuse

clip and press down. If you use a tool to press the fuse in place, apply pressure to the
metal end caps only, not the center of the fuse.

• 1746-OAP12 module: Insert a new fuse into the fuse holder, align the fuse holder on

fuse clips, and press down.

5. Replace the output module in the chassis.

6. Restore SLC 500 system power.

7. Clear processor fault bits as indicated in the steps provided on page 13

.

Electronically Protected Modules (1746-OB6EI and 1746-OB16E)

The electronic protection of the 1746-OB6EI and 1746-OB16E modules have been designed to
provide protection for the modules from short circuit and overload current conditions. The
protection is based on a thermal cut-out principle. In the event of a short circuit or overload
current condition on an output channel, that channel will limit current within milliseconds after
its thermal cut-out temperature has been reached. All other channels continue to operate as
directed by the CPU (processor) module.

The modules do not provide protection against reverse polarity wiring or
wiring to ac power sources. Electronic protection is not intended to replace
fuses, circuit breakers, or other code-required wiring protection devices.

Publication 1746-IN027D-EN-P - December 2012

E-FUSE LED Indicator

IMPORTANT

OUTPUT

E
F
U
S
E

E-FUSE LED Indicator

There is no jumper setting on this module.

Front View

Auto Reset Operation

The 1746-OB6EI and 1746-OB16E modules perform auto-reset under overload
conditions. When an output channel overload occurs, that channel will limit
current within milliseconds after its thermal cut-out temperature has been
reached. While in current limit, the output channel can cool below the thermal
cut-out temperature allowing the module to auto-reset and resume control of the
output channel as directed by the processor until the thermal cut-out
temperature is again reached.

Removing power from an overloaded output channel would also allow the output
channel to cool below the thermal cut-out temperature, allowing auto-reset to
occur when power is restored. The output channel would operate as directed by
the processor until the thermal cut-out temperature is again reached.

To avoid auto-reset of an output channel under overload conditions, an external
mechanical fuse can be used to open the circuit when overloaded.

SLC 500 Digital I/O Modules 15

Short Circuit/Overload Current Diagnostics

If a short circuit or overload current condition occurs on an output channel:

• the E-FUSE LED indicator will illuminate provided that power is applied to the module.
Power required: 5V DC via backplane and load power via an external supply.

• all other channels continue to operate as directed by the CPU (processor) module.

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16 SLC 500 Digital I/O Modules

Recovery from Channel Shutdown

1. Remove the SLC 500 system power and correct the conditions causing the short circuit
or overload current condition.

2. Restore the SLC 500 system power.

The module automatically resets and resumes control of the output channel and associated load.

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 17

TIP

IMPORTANT

IN 14

16

IN 1

IN 0

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

IN 9

IN 10

IN 11

IN 12

IN 13

IN 14

IN 15

AC COM

AC COM

0

1

2

4

6

IN 8

10

12

14

16

11

13

15

17

3

5

7

L1

L2

PLC

SLC

100/120V AC

1746-IA16

100/120V AC

Internally Connected
Commons

For PLC (octal)

For SLC (decimal)

Wiring Diagrams

The wiring diagrams in these installation instructions are examples only. It is not necessary to
connect an I/O device to each and every I/O module terminal.

Labeling for SLC/PLC Systems

In this document, 16-point I/O module wiring diagrams include both decimal and octal
numbers for I/O addressing and wire identification (see figure below). To wire your 16-point
I/O module when used in a SLC system, use the decimal numbers in the upper left portion of
each box. When used in a PLC system, use the octal numbers in the lower right portion of the
box.

As shipped from the factory, the I/O module has a decimal address label on the inside of its
door. A separate octal conversion kit can be ordered, to allow you to convert your module to the

octal system.

You can order the octal label kit from your Allen-Bradley Distributor. The octal kit
is ordered based on the catalog number of the I/O module.

Please refer to the SLC 500 Modular Hardware Style User Manual, publication

1747-UM011

, for a listing of octal label kit catalog numbers.

Be sure the octal labels are used with your PLC system. Directions on how to
install the labels are included with the kit and on page 6 of this document.

Decimal and Octal Labeling for 16-point I/O Modules

Publication 1746-IN027D-EN-P - December 2012

AC Input Modules Wiring Diagrams

PLC

SLC

IN 1

IN 0

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

IN 9

IN 10

IN 11

IN 12

IN 13

IN 14

IN 15

AC COM

AC COM

0

1

2

4

6

IN 8

10

12

14

16

11

13

15

17

3

5

7

L1

L2

100/120V AC

L1

L2

100/120V AC

IN 0

IN 1

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

AC COM

AC COM

L1

100/120V AC

NOT
USED

NOT
USED

NOT
USED

NOT
USED

IN 0

IN 1

IN 2

IN 3

AC COM

L2

1746-IA4

100/120V AC

1746-IA8

100/120V AC

Internally Connected
Commons

1746-IA16

100/120V AC

Internally Connected

Commons

1746-IA4, 1746-IA8, 1746-IA16

18 SLC 500 Digital I/O Modules

Publication 1746-IN027D-EN-P - December 2012

1746-IM4, 1746-IM8, 1746-IM16

IN 0

IN 1

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

AC COM

L1

L2

AC COM

200/240V AC

NOT
USED

NOT
USED

NOT
USED

NOT
USED

IN 0

IN 1

IN 2

IN 3

AC COM

L1

L2

200/240V AC

PLC

L1

L2

200/240V AC

IN 0

IN 2

IN 4

IN 6

IN 10

IN 12

IN 14

AC COM

0

2

4

6

IN 8

10

12

14

16

SLC

3

IN 5

IN 7

IN 9

IN 11

IN 13

IN 15

AC COM

11

13

15

17

5

7

IN 1

1

IN 3

1746-IM4

200/240V AC

1746-IM8

200/240V AC

Internally Connected

Commons

1746-IM16

200/240V AC

Internally Connected

Commons

SLC 500 Digital I/O Modules 19

Publication 1746-IN027D-EN-P - December 2012

DC Input Modules Wiring Diagrams

PLC

SLC

L1 or +DC

L2 or -DC

IN 1

IN 0

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

IN 9

IN 10

IN 1 1

IN 12

IN 13

IN 14

IN 15

AC/DC
COM

AC/DC
COM

0

1

2

4

6

IN 8

10

12

14

16

11

13

15

17

3

5

7

V AC/DC

1746-IN16

24V AC/DC Sinking

Internally Connected

Commons

-DC

IN 0

IN 1

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

+DC

-DC

DC COM

DC COM

24V dc

PLC

SLC

+DC

IN 1

IN 0

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

IN 9

IN 1 1

IN 12

IN 13

IN 14

IN 15

DC
COM

DC COM

0

1

2

4

6

IN 8

10

14

11

13

15

17

3

5

7

24V DC

(1746-IB16, 1746- ITB16)

48V DC

(1746-IC16)

125V DC

(1746-IH16)

6

IN 10

12

16

1746-IB8

24V DC Sinking

Internally Connected

Commons

1746-IB16,1746 -ITB16

24V DC Sinking

1746-IC16

48V DC Sinking

1746-IH16

125V DC Sinking

Internally Connected Commons

1746-IN16

1746-IB8, 1746-IB16, 1746-ITB16, 1746-IC16, 1746-IH16

20 SLC 500 Digital I/O Modules

Publication 1746-IN027D-EN-P - December 2012

PLC

SLC

-DC

+DC

IN 1

IN 0

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

IN 9

IN 10

IN 1 1

IN 12

IN 13

IN 14

IN 15

VDC

VDC

0

1

2

4

6

IN 8

10

12

14

16

11

13

15

17

3

5

7

24V dc

IN 0

IN 1

IN 2

IN 3

IN 4

IN 5

IN 6

IN 7

VDC

-DC

+DC

VDC

24V dc

1746-IV8

24V DC Sourcing

Internally

Connected V DC

Internally

Connected V DC

1746-IV16, 1746-ITV16

24V DC Sourcing

1746-IV8, 1746-IV16, 1746-ITV16

1746-IG16

+DC

+5V DC

-DC

TTL Input (Low = True)

1746-IG16

+5 DC

IN 1

IN 3

IN 5

5

IN 7

IN 9

11

IN 1 1

13

IN 13

15

IN 15

17

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 21

IN 0

0

IN 2

1

2

IN 4

3

4

IN 6

6

IN 8

7

10

IN 10

12

IN 12

14

IN 14

16

DC COM

SLC

PLC

AC Output Modules Wiring Diagrams

100…240V AC

CR

CR

VAC 1

OUT 0

OUT 1

OUT 2

OUT 3

VAC 2

OUT 4

OUT 5

OUT 6

OUT 7

CR

CR

L2

L1

L2

L1

OUT0

OUT 2

OUT 3

OUT 4

OUT 5

OUT 6

OUT 9

OUT 8

OUT 1 1

OUT 10

OUT 14

OUT 12

0

2

4

6

11

13

16

10

12

14

3

5

L1

PLC

SLC

CR

CR

L2

CR

CR

CR

CR

L2

CR

CR

100…240V AC

OUT 7

7

OUT 1

1

VAC 1

100…240V AC

L1

OUT 15

17

OUT 13

15

VAC 2

100…240V AC

1746-OA8

100...240V AC Triac Output

1746-OA16

100...240V AC Triac Output

11

7

OUT 7

OUT 2

OUT 3

OUT 4

OUT 5

2

4

3

5

L1

PLC

SLC

CR

L2

CR

CR

L2

CR

100…240V AC

OUT 1

1

VAC 1

100…240V AC

NOT
USED

VAC 2

L1

CR

CR

NOT
USED

OUT 0

0

VAC 2

VAC 1

OUT 10

OUT 11

12

13

OUT 9

OUT 8

10

OUT 6

6

1746-OAP12

100...240V AC High Current Triac Output

Internally
Connected
Commons

Internally Connected
Commons

1746-OA8, 1746-OA16

1746-OAP12

22 SLC 500 Digital I/O Modules

Publication 1746-IN027D-EN-P - December 2012

1746-OB6EI

VDC 0

OUT 0

DC
COM 0

VDC 2

OUT 2

DC
COM 2

VDC 4

OUT 4

DC
COM 4

VDC 1

+DC

-DC

+DC

-DC

+DC

-DC

+DC

-DC

+DC

-DC

+DC

-DC

10…30V DC

OUT 1

DC
COM 1

VDC 3

OUT 3

DC
COM 3

VDC 5

OUT 5

DC
COM 5

CR

CR

CR

1746-OB6EI

10...30V DC Transistor Output-sourcing
Channel-to-channel Isolated

10…30V DC

10…30V DC

10…30V DC

10…30V DC

10…30V DC

SLC 500 Digital I/O Modules 23

Publication 1746-IN027D-EN-P - December 2012

1746-OB8, 1746-OBP8, 1746-OB16, 1746-OB16E, 1746-OBP16

VDC1

OUT 1

OUT 3

NC

NC

CR

CR

OUT 0

OUT 2

NC

DC
COM1

-DC

+DC

20.4…26.4V DC

-DC

+DC

10…50V DC

-DC

+DC

20.4…26.4V DC

-DC

+DC

10…50V DC (1746-OB16)

10…30V DC (1746-OB16E)

20.4…26.4V DC (1746-OBP16)

VDC2

OUT 7

OUT 5

NC

CR

CR

OUT 6

OUT 4

NC

DC
COM2

NC

VDC

OUT 0

OUT 1

OUT 2

OUT 3

OUT 4

OUT 5

OUT 6

OUT 7

DC
COM

CR

CR

CR

CR

OUT 3

OUT 5

OUT 9

OUT 11

11

13

3

5

PLC

SLC

CR

CR

CR

CR

OUT 7

7

OUT 1

1

VDC

OUT 15

17

OUT 13

15

CR

CR

CR

CR

OUT 0

OUT 2

OUT 4

OUT 6

OUT 8

OUT 10

OUT 14

OUT 12

0

2

4

6

16

10

12

14

DC COM

1746-OB8

10...50V DC Transistor Output-sourcing

1746-OBP8

20.4...26.4V DC Transistor Output-sourcing

1746-OB16, 1746-OB16E, 1746-OBP16

10...50V DC, 10...30V DC, 20.4...26.4V DC
Transistor Output-sourcing

24 SLC 500 Digital I/O Modules

Publication 1746-IN027D-EN-P - December 2012

1746-OV8, 1746-OV16, 1746-OVP16

16

OUT 0

OUT 2

OUT 3

OUT 4

OUT 5

OUT 6

OUT 9

OUT 8

OUT 11

OUT 10

OUT 14

OUT 12

0

2

4

6

11

13

10

12

14

3

5

PLC

SLC

L

L

L

L

+5V DC

OUT 7

7

OUT 1

1

VDC

OUT 15

17

OUT 13

15

L

L

L

L

DC COM

+DC

-DC

L

L

L

L

L

L

L

L

1746-OG16

TTL Output (Low = True)

SLC 500 Digital I/O Modules 25

10...50V DC Transistor

VDC

OUT 0

OUT 1

OUT 2

OUT 3

OUT 4

OUT 5

OUT 6

OUT 7

DC COM

1746-OG16

1746-OV8

Output Sinking

CR

CR

CR

CR

+DC

10…50V DC

-DC

10...50V DC or 20.4...26.4V DC Transistor

+DC

10-50V DC (1746-OV16)

20.4-26.5V DC (1746-OVP16)

-DC

1746-OV16, 1746-OVP16

Output Sinking

VDC

OUT 1

1

OUT 3

3

OUT 5

CR

CR

CR

CR

OUT 7

OUT 9

OUT 1 1

OUT 13

OUT 15

5

7

11

13

15

17

OUT 0

OUT 2

OUT 4

OUT 6

OUT 8

OUT 10

OUT 12

OUT 14

DC COM

0

2

4

6

CR

10

CR

12

CR

14

CR

16

SLC

PLC

Publication 1746-IN027D-EN-P - December 2012

Relay Contact Output Modules Wiring Diagrams

V AC/DC

CR

CR

VAC-VDC

OUT 0

OUT 1

OUT 2

OUT 3

OUT 7

L2 or -DC

L1 or +DC

CR

CR

OUT 0

OUT 1

OUT 2

OUT 3

OUT 4

OUT 5

OUT 6

OUT 7

CR

CR

NOT
USED

NOT
USED

NOT
USED

NOT
USED

NOT
USED

OUT0

OUT 2

OUT 3

OUT 4

OUT 5

OUT 6

OUT 9

OUT 8

OUT 11

OUT 10

OUT 14

OUT 12

0

2

4

6

11

13

16

10

12

14

3

5

PLC

SLC

CR

CR

CR

CR

CR

CR

CR

CR

OUT 7

7

OUT 1

1

OUT 15

17

OUT 13

15

VAC-VDC

1

VAC-VDC

2

VAC-VDC

1

VAC-VDC

2

V AC/DC

L2 or -DC

L1 or +DC

V AC/DC

L2 or -DC

L1 or +DC

V AC/DC

L2 or -DC

L1 or +DC

V AC/DC

L2 or -DC

L1 or +DC

1746-OW4

Relay Output

1746-OW8

Relay Output

1746-OW16

Relay Output

1746-OW4, 1746-OW8, 1746-OW16

26 SLC 500 Digital I/O Modules

Publication 1746-IN027D-EN-P - December 2012

1746-OX8

VAC-VDC

0

OUT 0

OUT 1

OUT 2

OUT 3

NOT
USED

VAC-VDC

1

VAC-VDC

2

VAC±VDC

3

NOT USED

VAC-VDC

4

VAC-VDC

5

VAC-VDC

6

VAC-VDC

7

VS0 L1

VS1 L1

VS2 VDC

VS3 VDC

VS4 L1

VS5 L1

VS6 VDC

VS7 VDC

VS0 L2

VS1 L2

VS2 DC COM

VS3 DC COM

VS4 L2

VS5 L2

VS6 DC COM

VS7 DC COM

CR

CR

OUT 4

OUT 5

OUT 6

OUT 7

CR

CR

1746-OX8

Channel-to-channel Isolated Relay Output

CR

VAC-VDC

OUT 0

OUT 1

NOT
USED

NOT
USED

OUT 7

IN 0

IN 1

NOT
USED

NOT
USED

AC COM

L1

L2

CR

CR

OUT 0

OUT 1

OUT 2

OUT 3

OUT 7

L2 or -DC

L1 or +DC

IN 0

IN 1

IN 2

IN 3

AC COM

L1

L2

100/120V AC

VAC-VDC

V AC/DC

L2 or -DC

L1 or +DC

V AC/DC

100/120V AC

1746-IO4

100/120V AC Input Relay Output

1746-IO8

100/120V AC Input Relay Output

Combination Input/Output Modules Wiring Diagrams

SLC 500 Digital I/O Modules 27

1746-IO4, 1746-IO8

Publication 1746-IN027D-EN-P - December 2012

1746-IO12

OUT 0

OUT 2

OUT 3

OUT 4

OUT 5

NOT
USED

IN 1

IN 2

IN 3

IN 4

DC COM

NOT
USED

CR

CR

NOT
USED

OUT 1

NOT
USED

IN 5

VAC-VDC

IN 0

-DC

10…30V DC

+DC

L2 or -DC

L1 or +DC

V AC/DC

1746-IO12DC

24V DC Input - Relay Output

28 SLC 500 Digital I/O Modules

1746-IO12

100/120V AC Input - Relay Output

L1 or +DC

L2 or -DC

100/120V AC

1746-IO12DC

V AC/DC

L1

L2

VAC-VDC

OUT 0

OUT 1

OUT 2

OUT 3

CR

NOT
USED

IN 1

IN 3

IN 5

NOT
USED

NOT
USED

IN 0

IN 2

IN 4

NOT
USED

AC COM

OUT 4

OUT 5

CR

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 29

Specifications

General Specifications

Attribute Value

Temperature, operating 0...60 °C (32...140 °F)

Temperature, nonoperating -40...85 °C (-40...185 °F)

Operating humidity 5...95% (noncondensing)

Noise immunity NEMA standard ICS 2-230

Vibration, operating Displacement 0.015 in. peak @ 5...57 Hz

Shock, operating 30 g (all modules except relay contact)

(1)

Isolation

Agency certification UL listed

Hazardous environment class

(1)

Electro-optical isolation between I/O t erminals and control logic.

(2)

Some modules are classified Class 1, Division 2 by CSA onl y or C-UL only as shown in the specification table for the respective module.

(3)

Temperature is for air surrounding the SLC 500 system. Temperature range exceptions are indicated with certain modules.

Acceleration 2.5 g @ 57...2000 Hz

10 g (relay contact modules: 1746-OWx, 1746-OX8, and combination I/O modules)

1500V

CSA certified or C-UL approved as indicated by product marking
CE compliant for all applicable directives when product or packaging is marked
C-Tick marked for all applicable acts

(2)

Class I, Division 2 Hazardous Environment
UL-A196, CSA, C-UL

(3)

Heat Dissipation

The following tables contain values for the heat dissipated by each I/O module. Use them to
calculate the total amount of heat dissipated by your SLC 500 control system. For details on how
to calculate total heat dissipation, refer to the SLC 500 Modular Hardware Style User Manual,
publication 1747-UM011

. Please note the following definitions:

• Watts per point – the heat dissipation that can occur in each field wiring point when
energized at nominal voltage.

• Minimum Watts – the amount of heat dissipation that can occur when there is no field
power present.

• Total Watts – the Watts per point multiplied by the number of points, plus the
minimum Watts (with all points energized).

Publication 1746-IN027D-EN-P - December 2012

Input Modules Heat Dissipation

Catalog Numbers Watts per Point Minimum Watts Total Watts

1747-IA4 0.27 0.175 1.30

1746-IA8 0.27 0.250 2.40

1746-IA16 0.27 0.425 4.80

1746-IB8 0.20 0.250 1.90

1746-IB16 0.20 0.425 3.60

1746-IC16 0.22 0.425 3.95

1746-IG16 0.02 0.700 1.00

1746-IH16 0.32 0.217 5.17

1746-IM4 0.35 0.175 1.60

1746-IM8 0.35 0.250 3.10

1746-IM16 0.35 0.425 6.00

1746-IN16 0.35 0.425 6.00

1746-ITB16 0.20 0.425 3.60

1746-ITV16 0.20 0.425 3.60

1746-IV8 0.20 0.250 1.90

1746-IV16 0.20 0.425 3.60

30 SLC 500 Digital I/O Modules

Output Modules Heat Dissipation

Catalog Numbers Watts per Point Minimum Watts Total Watts

1746-OA8 1.000 0.925 9.00

1746-OA16 0.462 1.850 9.30

1746-OAP12 1.000 1.850 10.85

1746-OB6EI 0.440 0.230 2.90

1746-OB8 0.775 0.675 6.90

1746-OB16 0.388 1.400 7.60

1746-OB16E 0.150 0.675 3.07

1746-OBP8 0.300 0.675 3.08

1746-OBP16 0.310 1.250 6.26

1746-OG16 0.033 0.900 1.50

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 31

Output Modules Heat Dissipation

Catalog Numbers Watts per Point Minimum Watts Total Watts

1746-OV8 0.775 0.675 6.90

1746-OV16 0.388 1.400 7.60

1746-OVP16 0.310 1.250 6.26

1746-OW4 0.133 1.310 1.90

1746-OW8 0.138 2.590 3.70

1746-OW16 0.033 5.170 5.70

1746-OX8 0.825 2.590 8.60

Combination Input/Output Modules Heat Dissipation

Catalog Numbers Watts per Point Minimum Watts Total Watts

1746-IO4 0.27 per input point

0.133 per output point

1746-IO8 0.27 per input point

0.133 per output point

1746-IO12 0.27 per input point

0.133 per output point

1746-IO12DC 0.20 per input point

0.133 per output point

0.75 1.60

1.38 3.00

2.13 4.60

1.84 3.90

Publication 1746-IN027D-EN-P - December 2012

32 SLC 500 Digital I/O Modules

AC Input Modules

Specifications – 1746-IA4, 1746-IA8, and 1746-IA16

Attribute Value

1746-IA4 1746-IA8 1746-IA16

Voltage category 100/120V AC signal input

Number of inputs 4 8 16

Points per common 4 8 16

Voltage, operating 85...132V AC @ 47...63 Hz

Backplane current consumption 5V DC 0.035 A 0.050 A 0.085 A

24V DC 0.0 A

Signal delay, max On = 35 ms

Off-state voltage, max 30V AC

Off-state current, max 2 mA

Input current 12 mA @ 120V AC, nom

Inrush current, max

Inrush current time duration, max 0.5 ms

(1)

An AC input device must be compatible wit h SLC 500 input circuit inrush current. A current limiting resistor can be us ed to limit
inrush current; however, the operating characteristics of t he AC input-circuit will be affected.

(2)

Removable terminal block.

(1)

Off = 45 ms

0.8 A

(2)

Specifications – 1746-IM4, 1746-IM8, and 1746-IM16

Attribute Value

1746-IM4 1746-IM8 1746-IM16

Voltage category 200/240V AC signal input

Number of inputs 4 8 16

Points per common 4 8 16

Voltage, operating 170...265V AC @ 47...63 Hz

Backplane current consumption 5V DC 0.035 A 0.050 A 0.085 A

24V DC 0.0 A

Signal delay, max On = 35 ms

Off-state voltage, max 50V AC

Off-state current, max 2 mA

Off = 45 ms

Publication 1746-IN027D-EN-P - December 2012

(2)

SLC 500 Digital I/O Modules 33

Specifications – 1746-IM4, 1746-IM8, and 1746-IM16

Attribute Value

1746-IM4 1746-IM8 1746-IM16

Input current 12 mA @ 240V AC, nom

Inrush current, max

Inrush current time duration, max 0.5 ms

(1)

An AC input device must be compatible wit h SLC 500 input circuit inrush current. A current limiting resistor can be us ed to limit
inrush current; however, the operating characteristics of t he AC input-circuit will be affected.

(2)

Removable terminal block.

(1)

1.6 A

(2)

DC Input Modules

Specifications – 1746-IB8, 1746-IB16, 1746-ITB16, and 1746-IC16

Attribute Value

(1)

1746-IB8 1746-IB16

1746-ITB16

Voltage category 24V DC signal input (sinking) 48V DC signal input (sinking)

Number of inputs 8 16 16 16

Points per common 8 16 16 16

Voltage, operating 10...30V DC (sinking) 30...60V DC @ 55 °C (131 °F) sinking

Backplane current
consumption

Signal delay, max On = 8 ms

5V DC 0.050 A

24V DC 0.0 A

Off = 8 ms

On = 8 ms
Off = 8 ms

On = 0.3 ms
Off = 0.5 ms

Off-state voltage, max 5.0V DC 10.0V DC

Off-state current, max 1 mA 1 mA 1.5 mA 1.5 mA

Input current, nom 8 mA @ 24V DC 4.1 mA @ 48V DC

(1)

Removable terminal block.

(2)

Use ID Code 0509 when configuring your syst em with programming software or the HHT.

(3)

Typical signal delay for these modules: ON = 0.1 ms, OFF = 0.25 ms @ 24V DC .

(1)

1746-IC16

(1) (3)

30...55V DC @ 60 °C (140 °F) sinking

On = 4 ms

(2)

Off = 4 ms

Publication 1746-IN027D-EN-P - December 2012

Specifications – 1746-IV8, 1746-IV16, and 1746-ITV16

Attribute Value

(1)

1746-IV8 1746-IV16

Voltage category 24V DC signal input (sourcing)

Number of inputs 8 16 16

Points per common 8 16 16

Voltage, operating 10...30V DC (sourcing)

Backplane current
consumption

Signal delay, max On = 8 ms

Off-state voltage, max 5.0V DC

Off-state current, max 1 mA 1 mA 1.5 mA

Input current 8 mA @ 24V DC, nom

(1)

Removable terminal block.

(2)

Typical signal delay for these modules: ON = 0.1 ms, OFF = 0.25 ms @ 24V DC .

5V DC 0.050 A 0.085 A 0.085 A

24V DC 0.0 A

Off = 8 ms

On = 8 ms
Off = 8 ms

1746-ITV16

On = 0.3 ms
Off = 0.5 ms

Specifications – 1746-IG16

Attribute Value

Voltage category 5V DC TTL signal input (sourcing)

Number of inputs 16

Points per common 16

Voltage, operating +5V to DC COM 4.5...5.5V DC (sourcing)

Backplane current
consumption

Signal delay, max On = 0.25 ms

Off-state voltage 2...5.5 V DC

Off-state current, max 4.1 mA

Input current 3.7 mA @ 5V DC, nom

(1)

Removable terminal block.

(2)

TTL inputs are inverted (-0.2...0.8V DC = low voltage = True = ON). Use a NOT instruction in your ladder progra m to
convert to traditional True = High logic.

5V DC 0.140 A

24V DC 0.0 A

(1)

50 mV peak to peak ripple (max)

Off = 0.50 ms

(2)

34 SLC 500 Digital I/O Modules

(1)

(2)

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 35

ATTENTION: To avoid potential damage to TTL modules, handle them by the ends of the
module, not metallic surfaces. Electrostatic discharges can damage the module. take care
to prevent exposure of terminals or components to electrostatic charges.

Careful wire routing within the enclosure helps cut down electrical noise between I/O lines.
Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-UM011

, for

recommended wiring procedures for TTL modules.

Limit cable length to 15 m (50 ft) per point for inputs in standard environments.

Refer to Allen-Bradley Programmable Controller Wiring and Grounding Guidelines,
publication 1770-IN041

, for complete information.

Specifications – 1746-IN16

Attribute Value

Voltage category 24V AC/DC Signal Input

Number of inputs 16

Points per common 16

Voltage, operating DC 10...30V DC (sinking)

AC 10...30V AC

Backplane current
consumption

Signal delay, max DC On = 15 ms

Off-state voltage, max DC 3.0V DC

Off-state current, max DC 1 mA

Input current, nom DC 8 mA @ 24V DC

Input current 0.02 A (AC only)

(1)

Removable terminal block.

5V DC 0.085 A

24V DC 0.0 A

AC On = 25 ms

AC 3.0V AC

AC 1 mA

AC 8 mA @ 24V AC

(1)

Off = 15 ms

Off = 25 ms

Publication 1746-IN027D-EN-P - December 2012

Specifications – 1746-IH16

Attribute Value

Voltage category 125V DC signal input (sinking)

Number of inputs 16

Points per common 16

Voltage, operating Range:

Backplane current
consumption

Signal delay, max On = 9 ms

Off-state voltage, max 20.0V DC

Off-state current, max 0.8 mA

Input current, nom 2.15 mA @ 125V DC

(1)

Removable terminal block.

(2)

Use ID Code 0507 when configuring your syst em with programming software or the HHT.

(3)

If the input module is connected in parallel with an inductive load, use surge suppression across the load to protect
the input module from damage caused b y reverse voltage. Refer to the SLC 500 Modular Hardware Style User
Manual, publication 1747-UM011, for more information on surg e suppression.

5V DC 0.085 A

24V DC 0.0 A

(1)(2)(3)

90...146V DC

Off = 9 ms

2.25 mA @ 132V DC

Points ON Simultaneously, max:
6 @ 146V DC and 30 °C (86 °F)
12 @ 146V DC and 50 °C (122 °F)
14 @ 132V DC and 55 °C (131 °F)
16 @ 125V DC and 60 °C (140 °F)

36 SLC 500 Digital I/O Modules

AC Output Modules

Specifications – 1746-OA8, 1746-OA16, and 1746-OAP12

Attribute Value

1746-OA8 1746-OA16

Voltage category 120/240V AC signal input

Number of outputs 8 16 12

Points per common 4 8 6

Voltage, operating 85...265V AC @ 47...63 Hz

Backplane current
consumption

Signal delay, max resistive load

Off-state leakage, max

5V DC 0.185 A 0.370 A 0.370 A

24V DC

(1)

On = 1 ms
Off = 11.0 ms

(2)

2 mA

Publication 1746-IN027D-EN-P - December 2012

(5)

1746-OAP12

(5)(6)(7)

SLC 500 Digital I/O Modules 37

Specifications – 1746-OA8, 1746-OA16, and 1746-OAP12

Attribute Value

1746-OA8 1746-OA16

(5)

1746-OAP12

Load current, min 10 mA

Continuous current per point

Continuous current per module, max 8.0 A @ 30 °C (86 °F)

(3)

1.0 A @ 30 °C (86 °F)

0.50 A @ 60 °C (140 °F)

4.0 A @ 60 °C (140 °F)

0.50 A @ 30 °C (86 °F)

0.25 A @ 60 °C (140 °F)

8.0 A @ 30 °C (86 °F)

4.0 A @ 60 °C (140 °F)

2.0 A @ 30 °C (86 °F)

1.25 A @ 55 °C (131 °F)

1.0 A @ 60 °C (140 °F)

9.0 A @ 30 °C (86 °F)

6.8 A @ 55 °C (131 °F)

6.0 A @ 60 °C (140 °F)

On-state voltage drop, max 1.50V @ 1.0 A 1.50V @ 0.50 A 1.2V @ 2.0 A

Surge current per point

(1)

Triac outputs turn on at any point in the AC line cycle, and turn off at AC line zero cross.

(2)

To limit the effects of leakage current through solid- state outputs, a loading resistor can be connected in parallel with yo ur load. For 120V AC
operation, use a 15 KΩ, 2 W resistor. For 240V AC operation, use a 15 KΩ, 5 W resistor.

(3)

Recommended surge suppression: For triac outputs when switching 120V AC inductive loads, use Harris Metal-Oxide Varistor, model number
V220MA2A. Refer to the SLC 500 Modular Hardware St yle User Manual, publication 1747-UM011, for more information on surge suppression.

(4)

Repeatability is once every 1 s at 30 °C (86 °F). Repeatability is once every 2 s at 60 °C (140 °F).

(5)

Removable terminal block.

(6)

A fused common and blown fuse LED in dicator are provided on this module. See Fuse Protection and Blown Fuse Diagno stics.

(7)

Use ID Code 2803 when configuring your syst em with programming software or the HHT.

(8)

Surge current = 35 A per common for 10 ms .

(4)

, max 10.0 A for 25 ms 10.0 A for 25 ms 17.0 A for 25 ms

(5)(6)(7)

(8)

DC Output Modules

Specifications – 1746-OB8, 1746-OB16, and 1746-OB16E

Attribute Value

1746-OB8 1746-OB16

(4)

Voltage category 24V DC Signal Output

Number of outputs 8 16 16

Points per common 8 16 16

Voltage, operating (V DC) 10...50 (source) 10...30 (source)

Backplane current
consumption

Signal delay, max resistive load On = 1 ms

Off-state leakage, max

5V DC 0.135 A 0.280 A 0.135 A

24V DC 0.0 A

Off = 1.0 ms

(1)

1 mA

On = 0.1 ms
Off = 1.0 ms

Load current, min 1 mA

1746-OB16E

On = 1.0 ms
Off = 1.0 ms

Publication 1746-IN027D-EN-P - December 2012

(4)(5)

(6)

38 SLC 500 Digital I/O Modules

Specifications – 1746-OB8, 1746-OB16, and 1746-OB16E

Attribute Value

1746-OB8 1746-OB16

Continuous current per point

Continuous current per module, max 8.0 A @ 30 °C (86 °F)

(2)

1.0 A @ 30 °C (86 °F)

0.50 A @ 60 °C (140 °F)

4.0 A @ 60 °C (140 °F)

(4)

0.50 A @ 30 °C (86 °F)

0.25 A @ 60 °C (140 °F)

8.0 A @ 30 °C (86 °F)

4.0 A @ 60 °C (140 °F)

1746-OB16E

1.0 A @ 30 °C (86 °F)

0.50 A @ 60 °C (140 °F)

8.0 A @

0...60 °C (32...140 °F)

On-state voltage drop, max 1.2V @ 1.0 A 1.2V @ 0.50 A 1.0V @ 0.50 A

Surge current per point

(1)

To limit the effects of leakage current through solid- state outputs, a loading resistor can be connected in parallel with yo ur load. For transistor
outputs 24V DC operation, use a 5 KΩ, 1/2 W resistor.

(2)

Recommended surge suppression: For transistor out puts when switching 24V DC inductive loads, use a 1N4004 diode reverse-wired across the
load. Refer to the SLC 500 Modular Hardware Style User Manual, publication 17 47-UM011, for more information on surge suppression.

(3)

Repeatability is once every 1 s at 30 °C (86 °F). Repeatability is once every 2 s at 60 °C (140 °F).

(4)

Removable terminal block.

(5)

Use the following ID Code when configuring your system with programming software or the HHT: 1746-OB16E = 2920.

(6)

Fast turn-off modules (1746-OB6EI, 1746- OBP8 Series B and later, 1746-OB16E Series B and later, 1746-OBP16, and 1746-OVP16 ) provide fast
OFF delay for inductive loads. Comparative OFF delay times f or 1746-OB8/1746-OV8 and fast turn-off modules, when switching Bulletin
100-B110 (24W sealed) contactor, are: 1746-OB8/1746-OV8 OFF delay = 152 ms; fast t urn-off modules OFF delay = 47 ms.

(7)

Fast off delay for inductive loads is accomplish ed with surge suppressors on the 1746-OB6EI, 1746-OBP8 series B an d later,1746-OB16E series B
and later, 1746-OBP16, and 1746-OVP16 modules. A suppressor at the load is not ne eded unless another contact is connected in series. If this is
the case, a 1N4004 diode should be revers e wired across the load. This defeats the fast turn-off feature.

(8)

Surge current = 32 A per module for 10 ms.

(3)

3.0 A for 10 ms 3.0 A for 10 ms 2.0 A for 10 ms

(4)(5)

(8)

(7)

ATTENTION: A transient pulse occurs in transistor outputs when the external DC supply voltage
is applied to the output common terminals (for example, through the master control relay). This
can occur regardless of the processor having power or not. For most applications, the energy of
this pulse is not sufficient to energize the load.

Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-UM011
information on transient pulses and guidelines to reduce inadvertent processor operation.

Specifications – 1746-OB6EI, 1746-OBP8, and 1746-OBP16

Attribute Value

1746-OB6EI

(5)(6)

1746-OBP8

Voltage category 24V DC Signal Output

Number of outputs 6 8 16

Points per common Individually isolated 4 16

(5)(6)(8)

Publication 1746-IN027D-EN-P - December 2012

1746-OBP16

, for more

(5)(6)(9)(10)

SLC 500 Digital I/O Modules 39

Specifications – 1746-OB6EI, 1746-OBP8, and 1746-OBP16

Attribute Value

1746-OB6EI

(5)(6)

1746-OBP8

Voltage, operating (V DC) 10…30 (source) 20.4...26.4 (source)

Backplane current
consumption

Signal delay, max resistive load On = 1.0 ms

Off-state leakage, max

5V DC 0.046 A 0.135 A 0.250 A

24V DC 0.0 A

Off = 2.0 ms

(7)

(1)

1 mA

On = 1.0 ms
Off = 2.0 ms

Load current, min 1 mA

Continuous current per point

(2)(3)

2.0 A @ 0…60 °C (140 °F) 2.0 A @ 0…60 °C (140 °F) 1.5 A @ 30 °C (86 °F)

Continuous current per module 12.0 A @ 0…60 °C (140 °F) 8.0 A @ 0…60 °C (140 °F) 6.4 A @

On-state voltage drop, max 1.0V @ 2.0 A 1.0V @ 2.0 A 1.0V @ 1.0 A

Surge current per point

Surge current per module

(4)

4.0 A for 10 ms 4.0 A for 10 ms 4.0 A for 10 ms

(4)

24.0 A for 10 ms 32.0 A for 10 ms 32.0 A for 10 ms

Electronic protection Yes No No

(1)

To limit the effects of leakage current through solid state outputs, a loading resistor can be connected in parallel with your load. For transistor
outputs, 24V DC operation, use a 5.6 K Ω, 1/2 W resistor.

(2)

Recommended surge suppression: For transistor outp uts when switching 24V dc inductive loads, use a 1N4004 diode reverse-wired across the
load (also see footnote 3). Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-U M011, for more information on surge
suppression.

(3)

Fast off delay for inductive loads is accomplished with surge sup pressors on the 1746-OB6EI, 1746-OBP8 series B and later, 1746-OB16E series B
and later, 1746-OBP16, and 1746-OVP16 modules. A suppressor at the load is not needed unless another contact is connected in series. If this is
the case, a 1N4004 diode should be revers e wired across the load. This defeats the fast turn-off feature.

(4)

Repeatability is once every 1 s at 30 °C (86 °F). Repeatability is once every 2 s at 60 °C (140 °F).

(5)

Removable terminal block.

(6)

Use the following ID Code when configuring your system with programming software or the HHT: 1746-OB6EI = 2619, 1746-OBP8 = 2721 and
1746-OBP12 = 2921.

(7)

Fast turn-off modules (1746-OB6EI, 1746- OBP8 Series B and later, 1746-OB16E Series B and later, 1746-OBP16, and 1746-OVP16 ) provide fast
OFF delay for inductive loads. Comparative OFF delay times f or 1746-OB8/1746-OV8 and fast turn-off modules; when switching Bulletin
100-B110 (24W sealed) contactor, are: 1746-OB8/1746-OV8 OFF delay = 152 ms; fast t urn-off modules OFF delay = 47 ms.

(8)

An external fuse can be used to protect this module from short circuits. Recommended fuse is SANO MQ4-3.15A, 5 x 20 mm.

(9)

A fused common and blown fuse LED in dicator are provided on this module. See Fuse Protection and Blown Fuse Diagno stics.

(10)

Certified for Class 1, Division 2 hazardous location by CSA.

(7)

(5)(6)(8)

1746-OBP16

(7)

On = 0.1 ms
Off = 1.0 ms

1.0 A @ 60 °C (140 °F)

0...60 °C (32...140 °F)

(5)(6)(9)(10)

Publication 1746-IN027D-EN-P - December 2012

40 SLC 500 Digital I/O Modules

ATTENTION: A transient pulse occurs in transistor outputs when the external DC supply

voltage is applied to the output common terminals (for example, via the master control relay).
This can occur regardless of the processor having power or not. For most applications, the
energy of this pulse is not sufficient to energize the load.

Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-UM011
information on transient pulses and guidelines to reduce inadvertent processor operation.

Specifications – 1746-OV8, 1746-OV16, and 1746-OVP16

Attribute Value

1746-OV8 1746-OV16

(4)

1746-OVP16

Voltage category 24V DC Signal Output

Number of outputs 8 16 16

Points per common 8 16 16

Voltage, operating (V DC) 10...50 (sink) 20.4...26.4 (sink)

Backplane current
consumption

Signal delay, max resistive load On = 0.1 ms

Off-state leakage, max

5V DC 0.135 A 0.270 A 0.250 A

24V DC 0.0 A

Off = 1.0 ms

(1)

1 mA

On = 0.1 ms
Off = 1.0 ms

Load current, min 1 mA

Continuous current per point

Continuous current per module 8.0 A @ 30 °C (86 °F)

(2)

1.0 A @ 30 °C (86 °F)

0.50 A @ 60 °C (140 °F)

4.0 A @ 60 °C (140 °F)

0.50 A @ 30 °C (86 °F)

0.25 A @ 60 °C (140 °F)

1.5 A @ 30 °C (86 °F)

1.0 A @ 60 °C (140 °F)

6.4 A @

0...60 °C (32...140 °F)

On-state voltage drop, max 1.2V @ 1.0 A 1.2V @ 0.5 A 1.0V @ 1.0 A

Surge current per point

(1)

To limit the effects of leakage current through solid state outputs, a loading resistor can be connected in parallel with your load. For transistor
outputs, 24V DC operation, use a 5.6 K Ω, 1/2 W resistor.

(2)

Recommended surge suppression: For transistor outp uts when switching 24V dc inductive loads, use a 1N4004 diode reverse-wired across the
load (also see footnote 9). Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-UM011, for more information on surge
suppression.

(3)

Repeatability is once every 1 s at 30 °C (86 °F). Repeatability is once every 2 s at 60 °C (140 °F).

(4)

Removable terminal block.

(5)

A fused common and blown fuse LED in dicator are provided on this module. See Fuse Protection and Blown Fuse Diagno stics.

(6)

Use the following ID Code when configuring your system with programming software or the HHT: 1746-OVP16 = 2922.

(7)

Certified for Class 1, Division 2 hazardous location by CSA.

(3)

3.0 A for 10 ms 4.0 A for 10 ms

(4)(5)(6)(7)

(8)

(10)

, for more

(9)

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 41

(8)

Fast turn-off modules (1746-OB6EI, 1746- OBP8 series B and later, 1746-OB16E series B and later, 1746-OBP16, and 1746-OVP16 ) provide fast
OFF delay for inductive loads. Comparative OFF delay times f or 1746-OB8/1746-OV8 and fast turn-off modules; when switching Bulletin
100-B110 (24Ws sealed) contactor, are: 1746-OB8/1746-OV8 OFF delay = 152 ms; fast turn-off modules OFF delay = 47 ms.

(9)

Fast off delay for inductive loads is accomplished with surge suppressors on the 1746-OB6EI, 1746-OBP8 series B and later, 1746-OB16E series
B and later, 1746-OBP16, and 1746-OVP16 modules. A suppressor at the load is no t needed unless another contact is connected in series. If this
is the case, a 1N4004 diode should be reverse wir ed across the load. This defeats the fast turn-off feature.

(10)

Surge current = 32 A per module for 10 ms.

ATTENTION: A transient pulse occurs in transistor outputs when the external DC supply
voltage is applied to the output common terminals (for example, via the master control relay).
This can occur regardless of the processor having power or not. For most applications, the
energy of this pulse is not sufficient to energize the load.

Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-UM011
information on transient pulses and guidelines to reduce inadvertent processor operation.

Specifications – 1746-OG16

Attribute Value

Voltage category 5V DC TTL Signal Input (sinking)

Number of outputs 16

Points per common 16

Voltage, operating (V DC to DC COM) 4.5...5.5V DC

Backplane current
consumption

Signal delay, max resistive load On = 0.25 mA

Off-state voltage 4.5...5.5V DC

Off-state leakage, max 0.1 mA

Load current, min 0.15 mA

Continuous current per point 24 mA

(1)

Removable terminal block.

(2)

TTL outputs are inverted (0...0.4V D C = low voltage = True = ON). Use a NOT instruction in your
ladder program to convert to traditional True = High logic.

5V DC 0.180 A

24V DC 0.0 A

(1)

(2)

50 mV peak to peak ripple, max.

Off = 0.50 mA

, for more

Publication 1746-IN027D-EN-P - December 2012

42 SLC 500 Digital I/O Modules

Catalog Relay

1746-OX8 K1…K8

1746-IO4 K1 and K2

1746-IO8 K1…K4

1746-IO12 K1…K6

1746-IO12DC K1…K6

1746-OW4 K1…K4

1746-OW8 K1…K8

1746-OW16 K1…K16

ATTENTION: To avoid potential damage to TTL modules, handle them by the ends of the module,
not metallic surfaces. Electrostatic discharges can damage the module. Take care to prevent
exposure of terminals or components to electrostatic charges.

Careful wire routing within the enclosure helps cut down electrical noise between I/O lines.
Refer to the SLC 500 Modular Hardware Style User Manual, publication 1747-UM011

, for

recommended wiring procedures for TTL modules.

Limit cable length to 3 m (10 ft) per point for outputs in standard environments.

Refer to Allen-Bradley Programmable Controller Wiring and Grounding Guidelines,
publication 1770-IN041

, for complete information.

Relay Contact Modules

WARNING: Exposure to some chemicals may degrade the sealing properties of materials used

in the following devices: Relay Epoxy.

It is recommended that the user periodically inspect these devices for any degradation of
properties and replace the module if degradation is found.

Specifications – 1746-OW4, 1746-OW8, 1746-OW16, and 1746-OX8

Attribute Value

(2)

Voltage category AC/DC Relay

Number of outputs 4 8 16 8

Points per common 4 4 8 Individually isolated

Publication 1746-IN027D-EN-P - December 2012

1746-OW4

1746-OW8

(2)

1746-OW16

(2)(3)

1746-OX8

(2)(3)

SLC 500 Digital I/O Modules 43

Specifications – 1746-OW4, 1746-OW8, 1746-OW16, and 1746-OX8

Attribute Value

(2)

1746-OW4

Voltage, operating 5V DC 5...125

24V DC 5...265

Signal delay, max resistive load On = 10.0 ms

Backplane current
consumption

Off-state leakage, max 0 mA

Load current, min 10 mA @ 5V DC

Continuous current per point

Continuous current per module 8.0 A AC

(1)

Recommended surge suppression: For relay contact outputs, refer to the SLC 500 Modular Hardware User Manual, publication 1747-UM011.
Connecting surge suppressors across your external inductive load will extend the life of SLC 500 relay contacts.

(2)

Certified for Class 1, Division 2 hazardous location by CSA.

(3)

Removable terminal block.

(4)

The continuous current per module must be limited so the module power does not exceed 1440V A.

5V DC 0.045 A 0.085 A 0.170 A 0.085 A

24V DC 0.045 A 0.090 A 0.180 A 0.090 A

Off = 10.0 ms

(1)

See Relay Contact Ratings on page 43.

8.0 A /Common

1746-OW8

16.0 A AC

8.0 A /Common

(2)

1746-OW16

16.0 A AC

8.0 A /Common

(2)(3)

1746-OX8

(4)

(2)(3)

Relay Contact Ratings

Relay Contact Ratings – 1746-IO4, 1746-IO8, 1746-IO12, and 1746-IO12DC

Voltages

Amperes

(1)

Make Break Make Break

Volts (AC), max 120 15 1.5 2.5 1800 180

240 7.5 0.75

Volts (DC), max 125

24

(1)

The continuous current per module must be limited so the module power does not exceed 1440V A.

(2)

For DC voltage applications, the make/break ampere rating for relay contacts can be determined by dividing 28VA by the applied DC
voltage. For example, 28V A/48V DC = 0.58 A. For DC voltage applications less than 14V, the make/break ratings for relay contacts
cannot exceed 2 A.

0.22

1.2

(2)

(2)

Publication 1746-IN027D-EN-P - December 2012

(1)

Amperes
Continuous

1.0 28

2.0 28

Volt-Amperes

Relay Contact Ratings – 1746-OX8

44 SLC 500 Digital I/O Modules

Voltages

(1)

Amperes

Make Break Make Break

Amperes

Continuous

Volt-Amperes

(3)

Volts (AC), max 120 30 3.0 5.0 3600 360

240 15 1.5

Volts (DC), max 125

24

(1)

Recommended surge suppression: For relay contact outputs, refer to the SLC 500 Modular Hardware User Manual, publication

1747-UM011. Connecting surge suppressors acro ss your external inductive load will extend the life of SLC 500 relay contacts.

(2)

For DC voltage applications, the make/br eak ampere rating for relay contacts can be determined by dividing 28V A by the applied DC
voltage. For example, 28V A/48V DC = 0.58 A. For DC voltage appli cations less than 14V, the make/break ratings for relay contacts cannot
exceed 2 A.

(3)

The continuous current per module must be limited so the module power does not exceed 1440V A.

0.22

1.2

(2)

(2)

1.0 28

2.0 28

Publication 1746-IN027D-EN-P - December 2012

SLC 500 Digital I/O Modules 45

TIP

Combination Input/Output Modules

Specifications – 1746-IO4, 1746-IO8, 1746-IO12, and 1746-IO12DC

Attribute Value

(1)(2)

1746-IO4

Points per module 2 inputs

2 outputs

Points per common 2 4 6 6

Voltage category 120V AC 24V DC

Voltage, operating (inputs) 85...132V AC 10...30V DC

Voltage category (outputs) 100/120V AC Relay contact output

Voltage, operating (outputs) 5...265V AC

Backplane current
consumption

(1)

Certified for Class 1, Division 2 hazardous location by CSA.

(2)

See specifications for catalog numbers 1 746-IA4 and 1746-OW4. Continuous Current per 1746-IO4 Module is 4.0 A .
Continuous Current per 1746-IO8 Module is 8.0 A.

(3)

Removable terminal block.

(4)

See specifications for catalog numbers 1 746-IA16 and 1746-OW16. Continuous Current per 1746-IO12 Module is 8.0 A.

(5)

See specification for catalog numbers 1746- IB16 and 1746-OW16. Continuous Current per 1746-IO12DC Module is 8.0 A.

(6)

Certified for Class 1, Division 2 hazardous location by C-UL.

(7)

Use the following ID Code when configuring your system with programming software or the HHT: 1746-IO12DC = 1512.

5...125V DC

5V DC 0.030 A 0.060 A 0.090 A 0.080 A

24V DC 0.025 A 0.045 A 0.070 A 0.060 A

1746-IO8

4 inputs
4 outputs

(1)(2)

1746-IO12

6 inputs
6 outputs

(1)(3)(4)

1746-IO12DC

6 inputs
6 outputs

(3)(5)(6)(7)

For combination I/O modules 1746-IO4, 1746-IO8, 1746-IO12 and 1746-IO12DC):

The first several seconds of any powerup or when power is applied to a rack that is
not under processor control, the output LED indicators of the combination input and
output modules in the rack will be illuminated.

Racks are not under processor control if one of the following conditions exist:

• Modular Hardware Style (only): Processor is absent from the rack or the rack
interconnect cable is not properly connected.

• Modular Hardware Style and Fixed Hardware Style: The processor does not have the
firmware PROM installed or the processor is not functioning properly.

Publication 1746-IN027D-EN-P - December 2012

Notes:

46 SLC 500 Digital I/O Modules

Publication 1746-IN027D-EN-P - December 2012

Notes:

SLC 500 Digital I/O Modules 47

Publication 1746-IN027D-EN-P - December 2012

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http://support.rockwellautomation.com

.

Installation Assistance

If you experience a problem within the first 24 hours of installation, please review the
information that's contained in this manual. You can also contact a special Customer Support
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, you can find technical manuals, a

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number above to obtain one) to your distributor in order to complete the return process.

Publication 1746-IN027D-EN-P - December 2012 PN-185007

Supersedes Publication 1746-IN027C-EN-P - August 2008 Copyright © 2012 Rockwell Automation, I nc. All rights reserved. Printed in the U.S.A.