Rockwell-automation MBB BUS Extender Module Manual do Utilizador descarregar pdf (Página 11)

MBB October 2005

–

Issue 4

11

Triguard

SC300E MBB Bus Extender Module

SERVICING

SCOPE

The

MBB

is

not

field

repairable.

Field

servicing

operations

are

confined

to

the

total

replacement

of

faulty

MBBs.

Return

faulty

MBBs

for

repair.

DIAGNOSIS

A faulty

MBB

will

be

apparent

by

a single

I/O

channel

failure

affecting

all

the

field

devices

serviced

by

a particular

extension

chassis.

The

Health

LED

may

also

extinguish.

CONFIGURATION

There are no on

-

board

configurable

links.

Refer

to

section

Figure

2

-

5 for

chassis

address

link

settings.

REMOVAL AND REPLACEMENT

Withdraw

the

faulty

MBB

using

the

ejector

levers

and

replace

it

with

a serviceable

one

and

check

that

the

Health

LED

illuminates.

When

the

MBB

is

withdrawn

from

the

chassis

Fault

bit

1 will

be

set

immediately.

The

corresponding

MPP

may

halt,

this

will

depend

on

the

length

of

time

the

MBB

slot

remains

empty

and

on

the

progress

of

the

diagnostic

task

stepping

through

the

system

(1

second

per

slot).

If

the

MPP

does

halt

carry

out

a warm

start

after

the

serviceabl

e MBB

has

been

fitted.

1 2 ... 6 7 8 9 10 11 12

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