Rockwell-automation MPP Processor Moduile Manual de usuario descargar pdf (Pagina 24)

24

MPP

October

200

5

–

Issue 6

Triguard

SC300E

BATTERY

REPLACEMENT

Fresh

batteries

will

sustain

SRAM

for

a total

of

about

six

months

(either

in

one

long

stretch,

or

in

several

shorter

stretches).

The

backup

batteries

should

be

replaced

where

it

is

known

that

the

total

battery

drain

period

is

approaching

six

months

or

once

every

five

years

(whichever

occurs

first).

If

the

SC300E

System

is

Operating

1.

Remove

one

of

the

three

MPPs.

2.

Remove

and

safely

dispose

of

both

batteries.

3.

Wait

about

5 minutes

for

any

capacitance

in

the

system

to

discharge.

4.

Ensuring

the

correct

polarity

Figure

1

-

1

,

fit

the

new

batteries.

5.

Replace

the

MPP

and

perform

a war

m start.

6.

Repeat

the

above

procedure

for

each

of

the

remaining

MPPs

in

turn.

If

the

SC300E

System

is

Not

Operating

If

the

system

is

not

powered

up,

the

data

in

SRAM

is

being

supported

by

the

backup

batteries.

To

preserve

this

data

it

is

important

not

to

remove

both

batteries

at

once.

If

only

one

battery

is

fitted,

install

a new

battery

in

the

vacant

slot

before

removing

the

old

battery.

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