Honeywell 05701-A-0351 PLC Module

The 5701 Series Control System is a microprocessor based system

which displays the reading and status of connected gas detectors.

The system  provides complex alarm handling facilities with a full

maintenance capability.

A    rack    system    is    fitted    with    a    number    of    single    channel    control    cards

each    with    an    associated    field/    relay    card    which    provides    the    necessary

sensor input  and optional relay output connections. Simple alarm

handling and operation is provided by each channel control card.

Complex alarm handling is achieved by communication between a

specified    number    of    control    cards    via    the    backplane    of    the    rack.

An    engineering    card    is    fitted    to    each    rack    and    provides    control    of    the    rack

backplane communications, control card interrogation and facilitates

maintenance.    In    addition,    optional    modules    fitted    to    the    engineering

card can provide additional system outputs.

System power supplies, auxiliary power supplies and battery back up

systems are all normally connected to the rack via a DC Input Card,

however, for high integrity system installations power supplies can be

connected directly to each individual control card

Each rack assembly contains a sub-rack, Engineering Card, DC Input

Card, key kit and where necessary an interconnecting cable.

Dependent    upon    configuration,    the    control    system    is    housed    in    one    of

four    standard    size    sub-racks    as    follows:

Full 19 inch wide by 3U high – Part Number 05701-A-0511.

for    rear    field    wiring    connections.

Full 19 inch wide by 6U high – Part Number 05701-A-0501.

for    front    field    wiring    connections.

Half 19 inch wide by 3U high – Part Number 05701-A-0512.

for    rear    field    wiring    connections.

Half 19 inch wide by 6U high – Part Number 05701-A-0502.

for    front    field    wiring    connections.

All four versions have two separate chambers. One is sealed against

electromagnetic interference and contains the control cards while the

other    chamber    contains    the    field/relay    interface    cards.    A    backplane

between the two chambers provides a path for signal routeing

between individual cards and the Engineering Card, and power supply

distribution

Two wall mounted cabinets are used to house:

the full width 16 channel front access rack,

(Part Number 05701-A-0451)

or the eight channel half width front access rack.

(Part Number 05701-A-0452)

A front door on each cabinet provides security and dust protection,

while a clear panel in the door allows the channel card displays to be

viewed when the door is closed. The base of each cabinet contains a

selection of preformed knockout cable gland entries.

The 5701 Single Channel Control Card provides

control, display and alarm facilities for a

connected gas detector. The front panel display

indicates the gas reading and channel status

while LEDs are used for alarms. A push-button

is provided for resetting the alarms and selecting

the card for use with the Engineering Card.

The operation of the control card is microprocessor

controlled    and    is    fully    definable    for    a    wide    range

of connected gas detectors and application

requirements.    The    software    configuration    setup

is stored in an EEPROM.

There are two types of control card depending

on    the    type    of    gas    detector    being    fitted    to    the

system:

Single Channel Control Card 4 – 20mA.

Part Number 05701-A-0301.

Single Channel Control Card Catalytic.

Part Number 05701-A-0302.

Each of the above control cards consist of

a    single    channel    control    card    fitted    with    the

respective plug-in sensor drive module.

An optional Analogue Output Module can also

be plugged into the single channel control card

to provide a remote output of the channel card

readings.