ABB SACO 64D4 Annunciator unit

SACO 64D4

Annunciator unit

User´s manual and Technical description

Complete annunciator unit with 64 channels

for operation from NO or NC field contacts

Fibre-optic or electric data bus between the

alarm units

Resolution better than 10 ms in the event re

cording

Independently operating alarm modules

Each module provided with a sophisticated

self-supervision system

16 relay reflashes to be freely grouped

Easy programming via SMS Software or a sepa

rate programming module SACO 16PM

Sophisticated built-in self-supervision system for

encreased reliability

General

The annunciator unit type SACO 64D4 is part

of the SPACOM system, an integrated second

ary equipment system for distribution networks.

The annunciator unit SACO 64D4 is an inde

pendently operating unit which includes four

16-channel annunciator modules and a power

supply module. SACO 64D4 can be used as a

stand-alone unit or combined with other SACO

64D4 subracks, as a pure signalling system.

Further more it can be integrated into an event

sequence reporting and signalling system. In

such a case the units communicate with each

other over a serial interface and the so called

SPA-bus (or LON-bus), allowing a geographi

cally distributed configuration of the units.

Serial communication contact with a station

level computer or other higher-level equipment

is also possible. In such a case SACO 64D4 can

be used for data acquisition and even for con

trol purposes.

Areas of

appIication

The SPACOM components have been devel

oped and manufactured to meet the most de

manding requirements as to reliability in op

eration and immunity to interference.

Another significant feature is the system flexibil

ity which allows a wide area of applications, e.g.-

 electric power plants and substations- industrial plants and processes- marine and offshore installations-

 technical installations in buildings- water treatment plats etc

The annunciator unit SACO 64 D4 is com

posed of four 16-channel alarm modules type

SACO 16 D2B and a doubled power supply

module. The unit is housed in a 19 inch rack

with the height 3 U.

Apart from the 64 channels the unit contains

inputs for resetting of audible device, acknow

ledgement of alarms, resetting of annunciator

channels and for testing. When using the unit

as a stand-alone annunciator system, an ac

knowledgement module type SWDM 3A1 can

be connected to these inputs.

Alternatively, the channels 63 and 64 can be

used as inputs for LOCAL/REMOTE func

tions.

Channel inputs 1…16

The unit includes 16 output relays for freely

programmable group realarms, so called reflash

alarms. The output relays 15 and 16 can be used

for internal self-supervision and for audible

alarm.

Input signal follower, signal indicator follower

or group alarm follower outputs for every chan

nel are obtainable from the flat cable connector

included in the unit. These outputs can be uti

lized by means of the relay unit SACO 128R4

which can hold up to eight 16-channel output

auxiliary relay cards.

The serial interface connection to the SPA-bus

(or LON-bus) is made either by means of a flat

cable connector between subracks or fiber op

tic connection modules connected to the screw

terminals. The former alternative is used for

uniting units built together.

ing bus for internal faults and an interlocking

bus for the transmission of interlocking signals

between the annunciator modules. When seve

ral annunciator units SACO 64D4 are built

together, the SPA-bus can be used for synchro

nizing the flashing sequence of the alarm indi

cators of the modules.

In a distributed system bus connection mod

ules type SPA-ZC_ are used for connecting the

annunciator unit to the SPA-bus. Bus connec

tion modules are available for both optical and

electrical data transmission. The transmission

distances vary with the transmission media, the

following values can be given:- plastic-fibre: at least 30 m- glass-fibre: at least 1 km- pairs of twisted conductor without galvanic

isolation: at least 30 m- pairs of twisted conductor with galvanic iso

lation: at least 200 m

Fiber optic media is always recommended due

to its good resistance to electromagnetical in

terference.

The setting values, groupings and interlockings

of the annunciator modules are stored in non

volatile memories.

In a stand-alone annunciator system without a

higher level system connected the modules can

be programmed by temporarily connecting the

programming module SACO 16PM to the an

nunciator modules SACO 16D2B.

If SACO 64D4 is connected to a higher level

system, e.g MicroSCADA the programming

might be made from there. A SMS software can

also be used for programming the SACO 64D4.