Rockwell Automation 1746-NO8V User Manual

Installation Instructions

SLC 500 8-Point Analog Output Module

(Catalog Numbers 1746-NO8I and 1746-NO8V)

Inside…............................................................................................page

Important User Information .................................................................... 2

For More Information.............................................................................. 3

Hazardous Location Considerations ....................................................... 4

Environnements dangereux .................................................................... 4

Hardware Features ................................................................................. 5

Determining Power Requirements.......................................................... 6

Using an External 24V dc Power Supply (optional) ................................ 6

Installation .............................................................................................. 8

Wiring ................................................................................................... 11

Configuration ........................................................................................ 14

Specifications ....................................................................................... 16

Rockwell Automation Support................................................. Back Cover

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2 SLC 500 8-Point Analog Output Module

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 Rockwell Automation 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, Rockwell Automation 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 Rockwell Automation 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:

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.

!

IMPORTANT

Publication 1746-IN026A-EN-P - July 2003

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

SLC 500 8-Point Analog Output Module 3

For More Information

Related Publications

Table 1 List of Related Publications for 1746-NO8I and 1746-NO8V Modules

For Refer to this Document Pub. No.

A more detailed description on how to install and
use your 1746-NO8 module.

A more detailed description on how to install and
use your modular SLC 500 system.

A more detailed description on how to install and
use your fixed SLC 500 system.

A reference manual that contains status file data,
instruction set, and troubleshooting information.

How to Get More Information

If you would like a manual, you can:

• download a free electronic version from the internet at

SLC 500 8-Point Analog Output
Module User Manual

SLC 500 Modular Hardware Style User
Manual

SLC 500 Fixed Hardware Style
Installation and Operation Manual

SLC 500 Instruction Set Reference
Manual

1746-UM026

1747-UM011

1747-6.21

1747-RM001

www.theautomationbookstore.com

• purchase a printed manual by:

– contacting your local distributor or Rockwell Automation representative
– visiting www.theautomationbookstore.com and placing your order
– calling 1.800.963.9548 (USA/Canada) or 001.330.725.1547 (Outside

USA/Canada)

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4 SLC 500 8-Point Analog Output Module

Hazardous Location Considerations

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or
non-hazardous locations only. The following WARNING statement applies to use in
hazardous locations.

WARNING

!

EXPLOSION HAZARD

• Substitution of components may impair suitability for Class

I, Division 2.

• Do not replace components or disconnect equipment

unless power has been switched off.

• Do not connect or disconnect components unless power

has been switched off.

• All wiring must comply with N.E.C. article 501-4(b).

Environnements dangereux

Cet équipement est conçu pour être utilisé dans des environnements de Classe 1,
Division 2, Groupes A, B, C, D ou non dangereux. La mise en garde suivante
s’applique à une utilisation dans des environnements dangereux.

AVERTISSEMENT

!

DANGER D’EXPLOSION

• La substitution de composants peut rendre cet équipement

impropre à une utilisation en environnement de Classe 1,
Division 2.

• Ne pas remplacer de composants ou déconnecter

l'équipement sans s'être assuré que l'alimentation est
coupée.

• Ne pas connecter ou déconnecter des composants sans

s'être assuré que l'alimentation est coupée.

Publication 1746-IN026A-EN-P - July 2003

SLC 500 8-Point Analog Output Module 5

Hardware Features

The module contains a removable terminal block, providing connection for 8
analog output channels, which are specifically designed to interface with analog
current and voltage devices. The 1746-NO8I provides eight channels of current
outputs, while the 1746-NO8V provides eight channels of voltage outputs. There
are no input channels on the module.

The module is configured via the programming software. There are no DIP
switches.

A jumper, J4, is used to select whether the 24V dc power is provided by the SLC
backplane or an optional 24V dc external power supply.

The following illustration displays the main hardware features.

Nameplate

Channel Status
LEDs (Green)

Module Status
LED (Green)

Removable
Terminal Block

Cable Tie Slots

MODULE

ANALOG

OUTPUT

CHANNEL
STATUS

Door Label

I OUT 0

ANL
COM 0

I OUT 1

ANL
COM 1

I OUT 2

ANL
COM 2

I OUT 3

ANL
COM 3

I OUT 4

ANL
COM 4

I OUT 5

ANL
COM 5

I OUT 6

ANL
COM 6

I OUT 7

ANL
COM 7

+24
VDC

DC
COM

RACK

123

EXT

Self-locking Tabs

J4 Jumper

Table 2 1746-NO8 Hardware Features

Hardware Feature Function

Channel Status LED Indicators Displays channel operating and fault status.

Module Status LED Displays module operating and fault status.

Side Label (Nameplate) Provides module information.

Removable Terminal Block Provides physical connection to input devices.

Door Label Permits easy terminal identification.

Cable Tie Slots Secures and routes wiring from the module.

Self-Locking Tabs Secures module in the chassis slot.

J4 Jumper Selects 24V dc power source.

Nameplate Provides module information such as catalog number, backplane

requirements, and output ranges.

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6 SLC 500 8-Point Analog Output Module

Determining Power Requirements

The module receives its power through the SLC 500 chassis backplane from the
+5V dc/+24V dc chassis power supply. The +5V dc backplane supply powers the
SLC circuitry, and the +24V dc backplane supply powers the module analog
circuitry. The maximum current drawn by the module is shown in the table below.

Table 3 1746-NO8 Backplane Current Consumption

Specification 1746-NO8I 1746-NO8V

Backplane Current Consumption (maximum) 120 mA at 5V dc

250 mA at 24V dc

Backplane Current Consumption (maximum)

when Using External 24V dc Power Supply

(1) The 1746-NO8I and 1746-NO8V output modules can use an external 24V dc power supply to reduce backplane loading. To

use an external 24V dc power supply, you must set your module’s jumper J4 as indicated in the following section. To comply
with the U.L. regulation, the external power supply must be rated N.E.C. Class 2. Do not use the 24V dc user power terminal
on the chassis power supply to power the analog output module.
NOTE: The external 24V dc power supply terminal block ground connection (DC COM) is connected to the SLC power supply
ground.

(1)

120 mA at 5V dc
0 mA at 24V dc

Add the values shown in the table above to the requirements of all other modules
in the SLC chassis to prevent overloading the chassis power supply. Refer to your
controller’s User Manual for power supply loading calculations and worksheets.

120 mA at 5V dc
160 mA at 24V dc

120 mA at 5V dc
0 mA at 24V dc

Using an External 24V dc Power Supply (optional)

The jumper, J4, is located in the bottom right corner of the module’s circuit board
next to the power supply.

J4 jumper location

123

RACK

EXT

Publication 1746-IN026A-EN-P - July 2003