Allen-Bradley 1771-OFE Bedienungsanleitung

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Use this document as a guide when installing the 1771-OFE analog

output module.

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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.

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Installation Instructions

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Analog Output Module2

    

Allen–Bradley publication SGI–1.1, Safety Guidelines for

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.



!

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.



!

Identifies information about practices or

circumstances that may lead to personal injury or

death, property damage, or economic loss.

IMPORTANT

Identifies information that is critical for

successful application and understanding of the

product.

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Analog Output Module 3

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

!

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 “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 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.

See NEMA Standards publication 250 and IEC

publication 60529, as applicable, for explanations

of the degrees of protection provided by different

types of enclosures. 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.

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Analog Output Module4

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!

ATTENTION Preve ti g 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, keep modules in appropriate

static–safe packaging.

The 1771-OFE module can be used with any 1771 I/O chassis.

Compatibility and data table use is listed below.

C

Use of Data Table Compatibility

Catalog

Number I put

Image

Output

Image

Read

Block

Write

Block

Addressi g Chassis

Si

Image

Bits

Image

Bits

Block

Words

Block

Words 1/2ĆSlot 1ĆSlot 2ĆSlot

S

er

i

es

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  %#&)!" +!) %*) '()'!)!%$

The analog output module receives its power through the 1771 I/O

chassis backplane from the chassis power supply. It does not require

any other external power supply. When planning your system, you

must consider the power usage of all modules in the I/O chassis to

prevent overloading the I/O chassis backplane and/or power supply.

Add this to the requirements of all other modules in the I/O chassis.

A alog Module Power Requireme t

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U dersta d Product

Compatibility

Calculate Power

Requireme ts

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Analog Output Module 5

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Place your module in any I/O module slot of the I/O chassis except

for the left-most slot. This slot is reserved for PC processors or

adapter modules.

!

ATTENTION Group your modules to minimize adverse affects

from radiated electrical noise and heat. We

recommend the following.

•Group analog output and low voltage dc

modules away from ac modules or high voltage

dc modules to minimize electrical noise

interference.

•Do not place this module in the same I/O group

with a discrete high-density I/O module when

using 2-slot addressing.

•Limit adjacent slot power dissipation to 10W

maximum.

The module configuration jumpers consist of:

•the last state configuration jumper (all versions)

•the voltage range configuration jumpers (1771-OFE1 only).

The type of module you have dictates how you set the configuration

jumpers.

There are three versions of the analog output module:

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Current version modules (1771-OFE2 and -OFE3) have all

configuration jumpers installed and require no additional

configuration. The configuration jumper for the LAST STATE mode

output level is in the default position (MID). Refer to the section

entitled “Set the Last State Configuration Jumpers” for additional

configuration information.

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Analog Output Module6

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If you are using the voltage output version (1771-OFE1), you must

set several configuration jumpers on the module’s circuit board. You

must set these jumpers before you can proceed with configuring the

module. When you set these jumpers, you configure each channel for

one of the three voltage ranges listed above. The module is shipped

with the jumpers in the +10V position.

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The LAST STATE configuration jumpers determine the value of all

the module’s outputs whenever communication between the module

and the processor is lost. This condition occurs when a processor or

adapter faults, or the processor is placed in the PROG or TEST

mode, or if the remote I/O cable breaks.

This is a significant safety feature. You can choose to have the

module’s outputs go to the minimum, middle or maximum of their

respective ranges or hold their last state if a module or system fault

occurs or if the system processor changes from RUN to PROG

mode.

You do this by placing the LAST STATE configuration jumpers on

eight (four jumpers on sets of pins) of the stake pins corresponding

to MIN, MID or MAX. If you do not place configuration jumpers in

one of these positions, the module defaults to the HOLD LAST

VALUE setting.

IMPORTAN

T

•On power-up, the module’s output is

disabled until the module receives the first

block transfer write. The output then enables

with the value that you send it in the block

transfer write block.

•We ship 1771-OFE modules with the LAST

STATE configuration jumpers in the MID

position.

!

ATTENTION Switch 1 of the I/O rack affects the function of the

configuration settings as indicated in the table below.

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         

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Rack switch 1 determines what output conditions occur during a rack

fault.

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Analog Output Module 7

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To set the last state configuration jumpers,

proceed as follows.

!

ATTENTION Do not insert modules

into or remove modules

from the I/O chassis

while system power is

ON. Failure to observe

this rule could result in

damage to module

circuitry and unexpected

machine operation.

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4   

4   

 4  

These output conditions are active only if

the following conditions exist:

•the module faults

•the processor is in the PROGRAM or

TEST mode

•rack switch 1 is in the reset position

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Analog Output Module8

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Set the Voltage Ra ge Co figuratio Jumpers (1771ĆOFE1 o ly)

If you ordered the voltage output version, you must set several

configuration jumpers located inside the module on the circuit board.

2

In

Out

.

54

0-10V 



54

.

54

1-5V

54

.

10V









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54

.

54

.

54

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54

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54

.

LAST STATE

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









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



 

!

ATTENTION Observe the following precautions

when inserting or removing keys:

•Insert or remove keys with your

fingers.

•Make sure the key placement is

correct

Incorrect keying or the use of a tool

can result in damage to the

backplane connector and possible

system faults.

I stall the Keyi g Ba ds

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Analog Output Module 9

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!

 Remove power from the 1771 I/O chassis

backplane and field wiring arm before removing

or installing an I/O module.

•Failure to remove power from the backplane or

wiring arm could cause module damage, degra-

dation of performance, or injury.

•Failure to remove power from the backplane

could cause injury or equipment damage due to

possible unexpected operation.

!

WARNING When you insert or remove the module with

power applied, or connect or disconnect the field

wiring arm with field side power applied, 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.

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 

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Analog Output Module10

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The 1771–OFE modules are a modular component of the 1771 I/O

system requiring a properly installed system chassis. Refer to

publication 1771–IN075 for detailed information on acceptable

chassis and proper installation and grounding requirements. Limit

the maximum adjacent slot power dissipation to 10W maximum.

Connect your I/O devices to the cat. no. 1771-WC wiring arm

shipped with the module.

!

 Remove power from the 1771 I/O chassis

backplane and field wiring arm before removing

or installing an I/O module.

•Failure to remove power from the backplane or

wiring arm could cause module damage, degra-

dation of performance, or injury.

•Failure to remove power from the backplane

could cause injury or equipment damage due to

possible unexpected operation.

!

WARNING If you connect or disconnect wiring with

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.

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Allen-Bradley 1771-OFE Bedienungsanleitung

Beliebte Steuereinheit Handbücher anderer Marken