Rockwell Automation 1792D-88HC User Manual

Installation Instructions

High Current 8 Input/8 Output
ArmorBlock I/O Module Series B

(Cat. No. 1792D-88HC)

41945

The High Current ArmorBlock™ I/O module (Cat. No. 1792D-88HC)
is a stand-alone 24V dc I/O product which communicates via a
DeviceNet™ network. The semi-sealed housing requires no
enclosure.

This module has 8 inputs and 8 outputs. Inputs are 24V dc PNP
(sourcing) or NPN (sinking) devices. Outputs are self-protected 24V
dc and are for sourcing only. Diagnostic features included are output
short circuit and open wire detection reported to the point level.

Check Your Package Contents

Your package contains:

• 1 High Current Module

• Installation Instructions

IMPORTANT

Mating connectors and/or cable assembly must be
ordered separately.

Publication 1792D-IN005D-EN-P - February 2002

2 High Current 8 Input/8 Output ArmorBlock I/O Module Series B

ATTENTION

!

Important User Information

Because of the variety of uses for the products described in this
publication, those responsible for the application and use of these
products must satisfy themselves that all necessary steps have been
taken to assure that each application and use meets all performance
and safety requirements, including any applicable laws, regulations,
codes and standards. In no event will Allen-Bradley be responsible or
liable for indirect or consequential damage resulting from the use or
application of these products.

Any illustrations, charts, sample programs, and layout examples
shown in this publication are intended solely for purposes of
example. Since there are many variables and requirements associated
with any particular installation, Allen-Bradley does not assume
responsibility or liability (to include intellectual property liability) for
actual use based upon the examples shown in this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the

Application, Installation and Maintenance of Solid-State Control

(available from your local Allen-Bradley office), describes some
important differences between solid-state equipment and
electromechanical devices that should be taken into consideration
when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in
whole or part, without written permission of Rockwell Automation, is
prohibited.

Throughout this publication, notes may be used to make you aware
of safety considerations. The following annotations and their
accompanying statements help you to identify a potential hazard,
avoid a potential hazard, and recognize the consequences of a

potential hazard:

Publication 1792D-IN005D-EN-P - February 2002

Identifies information about practices or
circumstances that can lead to personal injury or
death, property damage, or economic loss.

High Current 8 Input/8 Output ArmorBlock I/O Module Series B 3

ATTENTION

!

IMPORTANT

Identifies information that is critical for
successful application and understanding of the
product.

Environment and Enclosure

This equipment is intended for use in a Pollution
Degree 2 industrial environment, in overvoltage
Category II applications (as defined in IEC
publication 60664-1), at altitudes up to 2000
meters without derating.

This equipment is considered Group 1, Class A
industrial equipment according to IEC/CISPR
Publication 11. Without appropriate precautions,
there may be potential difficulties ensuring
electromagnetic compatibility in other
environments due to conducted as well as
radiated disturbance.

This equipment is supplied as "enclosed"
equipment. It should not require additional
system enclosure when used in locations
consistent with the enclosure type ratings stated
in the Specifications section of this publication.
Subsequent sections of this publication may
contain additional information regarding specific
enclosure type ratings, beyond what this product
provides, that are required to comply with
certain product safety certifications.

See NEMA Standards publication 250 and IEC
publication 60529, as applicable, for
explanations of the degrees of protection
provided by different types of enclosure. Also,
see the appropriate sections in this publication,
as well as the Allen-Bradley publication 1770-4.1
("Industrial Automation Wiring and Grounding
Guidelines"), for additional installation
requirements pertaining to this equipment.

Publication 1792D-IN005D-EN-P - February 2002

4 High Current 8 Input/8 Output ArmorBlock I/O Module Series B

ATTENTION

!

Install Your High Current I/O Module

To install the module you must:

• Set the node address

• Mount the module

• Connect the cable assembly to the module

• Connect the DeviceNet cable to the module

• Communicate with your ArmorBlock I/O module

More detailed information about each of these steps is in the
following procedures.

Preventing Electrostatic Discharge

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.

• If available, use a static-safe workstation.

• When not in use, store the equipment in

appropriate static-safe packaging.

Set the Node Address

Valid node addresses are 00 to 63.

Set the node address using the rotary switches, RSNetWorx for
DeviceNet™, DeviceNetManager™, or another software configuration
tool. Setting the switches between 64 and 99 lets the software have
address control.

Each module is shipped with the node address set to 63 in the
module’s memory. The rotary switches are set for position 99 at
shipment. The switches are located on the bottom of the module.

Publication 1792D-IN005D-EN-P - February 2002

High Current 8 Input/8 Output ArmorBlock I/O Module Series B 5

The two switches are:

• MSD (most significant digit)

• LSD (least significant digit)

To reset the node address, use a small blade screwdriver to rotate the
switches. Line up the small arrow on the switch with the number
setting you wish to use.

The rotary switches are read at module power up only. Settings
between 64 and 99 cause the module to use the last valid node
address stored internally. Example: The last setting was 40. If a
change is made to 68, and then you power up, the address will
default to 40. Use the mini caps to cover and seal node address
switch ports.

Refer to the illustration of the rotary switches below.

41945

MSD

LSD

The module is equipped with AutoBaud detect. AutoBaud lets the
module read the settings already in use on your DeviceNet network
and automatically adjusts to follow those settings. The module is
shipped with AutoBaud enabled.

Mount the Module

1. Place the module against the panel where you want it

mounted.

2. Drill holes in the panel that are aligned with the moving holes

on the module.

Publication 1792D-IN005D-EN-P - February 2002