Rockwell-automation MDO32BNS 32-Channel Digital Output Module Manual do Utilizador descarregar pdf (Página 16)

16

MDO32BNS

Oc

tober

200

5

–

Issue 7

Triguard

SC300E

Removal and replacement

CAUTION

3

Failure

to

take

the

faulty

module

off

-

line

before

removing

it

from

the

chassis

could

trigger

a fault

alarm

or

cause

plant

shutdown

.

CAUTION

4

When

inserting

a module

ensure

that

it

is

aligned

with

the

markings

on

the

chassis

rails

and

that

it

engages

w

ith

the

upper

and

lower

guides.

Improper

insertion

may

cause

damage

to

the

module

and/or

chassis

connectors.

Single

-

slot

hot

repair

Operate

the

On/Off

Line

Request

switch

on

the

faulty

module,

the

three

On

Line

LEDs

should

all

go

out

to

indicate

that

the

M

PPs

have

recognised

the

request

and

taken

the

module

off

-

line.

The

outputs

will

be

de

-

energised

until

the

new

module

is

on

-

line.

Slacken

the

two

module

securing

screws

and

use

the

black

ejection

levers

(top

and

bottom)

to

draw

the

module

from

its

slot.

I

nsert

the

new

module

ensuring

that

it

engages

properly

in

the

upper

and

lower

guides

in

the

chassis,

the

top

and

bottom

chassis

rails

carry

alignment

marks

to

assist.

Pull

out

the

ejection

levers

and

as

the

module

is

pushed

back

engage

the

levers

on

the

ch

assis

rails.

The

levers

should

then

be

used

to

draw

the

module

into

position,

some

resistance

will

be

felt

as

the

rear

connector

pins

engage.

The

module

should

be

fixed

in

position

with

the

securing

screws.

Operate

the

On/Off

Line

Request

switch

and

check

that

the

three

On

Line

LEDs

illuminate

for

one

second,

extinguish

for

one

second

and

then

illuminate

permanently

to

indicate

that

the

module

has

been

put

on

-

line.

All

outputs

that

are

required

to

be

energised

by

the

system

logic

will

be

re

-

energised.

If

t

he

LEDs

do

not

illuminate

either

the

first

or

second

time

or

fail

to

remain

illuminated,

then

the

module

must

be

considered

faulty.

NOTE

If

the

replacement

board

comes

on

-

line

but

the

health

LED

is

extinguished

a fault

still

exists.

If

the

failure

is

LFD

this

may

indicate

a field

fault

(open

circuit)

and

the

field

loops

should

be

investigated.

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