Rockwell Automation 1790D-XXXX User Manual

Installation Instructions

DeviceNet 32 Point Digital Base Terminal
Block CompactBlock LDX I/O

Catalog Numbers 1790D-T16BV16V, 1790D-T16BV16B,
1790D-T0B32, 1790D-T32BVO, 1790D-T0V32 Series B

Topic Page

Important User Information 2
Preventing Electrostatic Discharge 3
Environment and Enclosure 4
North American Hazardous Location Approval 5
Before You Begin 5
Install the Base Block 6
Set the Node Address 6
Mount the Base Block 7
Mount the Optional Expansion Block 8
Wiring the Terminal Block 9
Interpret the Status Indicators 13
Cable Break Procedures 15
Specifications 16

2 DeviceNet 32 Point Digital Base Terminal Block CompactBlock LDX I/O

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
http://literature.rockwellautomation.com
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

available from your local Rockwell Automation sales office or online at

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.

) describes some important differences between solid state

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

Publication

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

Identifies information about practices or circumstances that can lead to personal
injury or death, property damage, or economic loss. Attentions help you to identify a
hazard, avoid a hazard and recognize the consequences.

Labels may be on or inside the equipment, for example, a drive or motor, to alert
people that dangerous voltage may be present.

Labels may be on or inside the equipment, for example, a drive or motor, to alert
people that surfaces may reach dangerous temperatures.

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DeviceNet 32 Point Digital Base Terminal Block CompactBlock LDX I/O 3

Preventing Electrostatic Discharge

ATTENTION

WARNING

WARNING

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.

If you connect or disconnect the communications cable with power applied to
this module or any device on the network, an electrical arc can occur. This
could cause an explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous before proceeding.

If you connect or disconnect wiring while the field-side power is on, an
electrical arc can occur. This could cause an explosion in hazardous location
installations.
Be sure that power is removed or the area is nonhazardous before proceeding.

ATTENTION

ATTENTION

To comply with the CE Low Voltage Directive (LVD), all wiring connections to
this equipment must be powered from a source compliant with the following:
Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV).

To comply with UL restrictions, DeviceNet must be powered from a source
compliant with the following:

Class 2 or Limited Voltage/Current.

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4 DeviceNet 32 Point Digital Base Terminal Block CompactBlock LDX I/O

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
publication 60664-1), at altitudes up to 2000 meters (6562 ft) 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 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, V2, V1, V0 (or equivalent) if
non-metallic. 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:

• Industrial Automation Wiring and Grounding Guidelines, for additional

installation requirements, Allen-Bradley publication 1770-4.1

• NEMA Standards publication 250 and IEC publication 60529, as

applicable, for explanations of the degrees of protection provided by
different types of enclosure.

.

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DeviceNet 32 Point Digital Base Terminal Block CompactBlock LDX I/O 5

North American Hazardous Location Approval

The following information applies when
operating this equipment in hazardous
locations:

Products marked "CL I, DIV 2, GP A, B, C, D" are suitable
for use in Class I Division 2 Groups A, B, C, D ,
Hazardous Locations and nonhazardous loca tions only.
Each product is supplied with markings on the rating
nameplate indicating the hazardou s location
temperature code. When combining p roducts within a
system, the most adverse temperature code (lowest "T"
number) may be used to help determine the ove rall
temperature code of the system. Combinations of
equipment in your system are subject to investigat ion
by the local Authority Having Jurisdiction at the time of
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.

• 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 marquage s sur sa plaque
d’identification qui indiquent le code de température pour les
environnements dangereux. Lorsque plusieurs pr oduits sont
combinés dans un système, le code de température le plus
défavorable (code de température le plu s faible) peut être
utilisé pour déterminer le code de temp érature global du
système. Les combinaisons d’équipements dans le système
sont sujettes à inspection par les autorités locales qualifiées
au moment de l’installation.

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 1,
Division 2.

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

Before You Begin

Read this section about important CompactBlock I/O requirements.
Current functions of CompactBlock LDX I/O blocks require the

current, modular electronic data sheet (EDS) file for RSNetWorx for
DeviceNet software, version 8.0 or later. These files are are available
online at http://www.ab.com/networks/eds/

EDS files for blocks with matching catalog numbers for both D-shell
and terminal block versions are the same. On the website and in
RSNetWorx for DeviceNet software, find the EDS file for both versions

.

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6 DeviceNet 32 Point Digital Base Terminal Block CompactBlock LDX I/O

of the blocks. For example, for the EDS file for 1790D-T16BV16B
blocks, use the EDS file labelled 1790D-16BV16B.

Install the Base Block

To install the base block:

• set the node address on the base block.

• mount the base block.

• mount the optional expansion blocks.

• wire the terminal block.

• connect the DeviceNet cable.

Set the Node Address

When setting the node address on the base block, note that each base
block comes with its internal program set for node address 63. To
reset the node address, adjust the switches on the front of the base
block. The two switches are most significant digit (MSD) and least
significant digit (LSD). You can set switches to 00...63.

Node Address Example

In this
example, the
node address
setting is 11.

The base block reads the rotary switches only when power is
applied. Switch settings 64…99 cause the base block to use the last
valid node address stored internally.

You can also set the node address through RSNetWorx for DeviceNet
software or a similar configuration tool.

When you use software configuration for the node address, set the
switches to 64…99.

NODE ADDRESS

MSD

LSD

MOD NET
STATUS

44202

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DeviceNet 32 Point Digital Base Terminal Block CompactBlock LDX I/O 7

Mount the Base Block

Mount the base block to a panel or DIN rail. We recommend that you
ground the panel or DIN rail before mounting the block.

Dimensions

166 mm
(6.53 in.)

1790D-T32BVO

23

22

32 INPUTS - 24V DC

31

30

42.5 mm
(1.67 in.)

DC INPUTS

21

20

19

18

17

16

7

6

5

4

3

2

1

0

14

13

12

11

10

9

8

29

28

27

26

25

24

15

32-point Base Module

Mount on a Panel

For panel mounting, use these steps.

1. Place the block against the panel where you want it mounted.

2. Gently pull and position the expansion cover to the left.

3. Place a center punch, nail, or similar device through the

mounting holes in the block and make two marks on the
panel at the lower-left and upper-right corners of the module.

4. Remove the block and drill two holes in the panel to

accommodate each of the mounting screws.

5. Replace the block on the panel and place a screw through

each of the two mounting holes.

Expansion
Cable
Cover

44250

6. Tighten the screws until the block is firmly in place.

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8 DeviceNet 32 Point Digital Base Terminal Block CompactBlock LDX I/O

Mount on DIN Rail

For DIN-rail mounting, use these steps.

1. Hook the top slot of the base block over the DIN rail.

44253

Locking Lever

2. Pull down on the locking lever while pressing the base block

against the rail.

3. Push up on the locking lever to secure the base block to the

rail when the base block is flush against the rail.

Mount the Optional Expansion Block

To mount the optional expansion block, use these steps.

1. Mount the expansion block by connecting it to a

previously-installed CompactBlock LDX I/O base or expansion
block.

2. Beginning with the base block, mount your expansion block

either horizontally or vertically.

• To mount horizontally (left to right), add an expansion

block in an end-to-end configuration.

Right Side Up

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Right Side Up Right Side Up Right Sid e Up

44372