Category: ABB

Application

The analog annunciator unit is used in a variety of applications requiring monitoring of

analog quantities such as temperature, current, voltage, power, etc. in power plants,

substations and industry. The equipment is also used in off-shore installations. For tem

perature measurement standard Pt or Ni sensors are used. For measuring electrical

quantities measuring transducers with stan dard mA or V outputs are employed.

The annunciator units can be used as indepen dent stand-alone units, or they can be

inte grated via a fibre-optic bus to form complete supervision, event sequence reporting

and data acquisition systems.

Data communication

The relay is provided with a serial interfaceon the rear panel. By means of a bus connection module

type SPA-ZC 17/S or SPAZC 21/S the relay can be connected to the fibre-optic SPA bus.

The bus connection module type SPA-ZC 21/S is powered from the host relay, whereas the bus

connection module SPA-ZC 17/S is provided with a built-in power unit, which can be fed from an

external secured power source. The relay communicates with higher-level data acquisition and

control systems over the SPA bus.

Self-supervision

The annunciator incorporates a sophisticated self-supervision system which increases the availability

of the device and the reliability of the system. The self-supervision system continuously monitors

the hardware and the software of the equipment. The system also supervises the operation of the

auxiliary supply module and the electronics voltages generated by the module.

Auxiliary supply voltage

The auxiliary supply of the relay is obtained from an internal plug-in type power supply module. 

Two auxiliary power module versions are available: type SPGU 240A1 for the supply voltage range

80 265 V ac/dc and type SPGU 48B2 for the supply voltage range 18 80 V dc. The power supply

module forms the internal voltages required by the annunciator.

Features

• Powerful, flexible and field-customizable 16-channel analog input signal annunciator

unit

• A full choice of 26 standardized field selectable channel input signal types

• Four alarm/trip levels per channel; two low set and two high set points

• The last thirty events with time markings stored for local presentation

• Bar graph, curve or numerical display of set and measured parameter values

• Extensive data communication via the serial interface and the SPA bus

• Parameter selection and adjustment from front panel or via serial interface

• Sophisticated hardware and software self supervision system for maximum opera

tional reliability under the most demanding environmental conditions

• Powerful software support for parameterization of the relay, for reading measured

and recorded values, events, etc., and for storing readings

• Member of the SPACOM product family and ABB s Distribution Automation system

• CE marking according to the EC directive for EMC

Product benefits

• Centralized alarm panel

Product features:

• Four output relays, i.e. two for group re-alarms, one for an audible device

and one for the self-supervision system

• Parameter selection and adjustment from front panel or via serial interface

• First-out alarm indication with clear four-digit display on the front panel

• Extensive data communication via the serial interface and the SPA bus

• Sophisticated hardware and software self-supervision system for maximum

operational reliability under the most demanding environmental conditions

• Powerful software support for parameterization of the unit via the serial interface

• Member of the SPACOM product family and ABB’s Distribution Automation system

• CE marking according to the EC directive for EMC

SACO 16D1 is a flexible digital annunciator unit for the supervision of

alarm and signalling contacts in power plants, substations and industrial

process installations.

The SACO 16D1 is a flexible, field-customizable 16-channel digital

annunciator unit. It is used in a variety of applications to supervise alarm

and signaling contacts in power plants, substations and industrial process

installations. The alarm unit is also approved for use in offshore installations

and marine applications. Further, the annunciator unit can be used in any

application where on/off signals are to be supervised.

This sophisticated hardware and software self-supervision system to ensure

maximum operational reliability has been designed for also the most

demanding environmental conditions.  The SACO 16D1 provides immediate

fault recognition, fault identification and visual and audible alarm when an

abnormal process situation occurs.  The alarm channels are activated by

normally open or normally closed contact. This annunciator unit also provides

a means for subsequent fault analyses, which means that corrective measures

can be carried out without delay and you maintain full control of the process.

The first-out alarm indication is achieved via a clear four-digit display on the

front panel.

The annunciator units can be used as independent stand-alone units, or they

can be connected together via a fibre-optic bus to form complete supervision,

event sequence reporting and data acquisition systems.

Scope

• Powerful, flexible and field-customizable 16-channel digital input signal

annunciator unit

Data communication

The annunciator unit is provided with a serial interface on the rear panel.

By means of a bus connection module type SPA-ZC 17/S or SPA-ZC 21/S

the unit can be connected to the fibre-optic SPA bus. The bus connection

module type SPA-ZC 21/S is powered from the host unit, whereas the bus

connection module SPA-ZC 17/S is provided with a built-in power unit,

which can be fed from an external secured power source. The unit com

municates with higher-level data acquisition and control systems over

the SPA bus.

Self-supervision

The annunciator incorporates a sophisticated self-supervision system

which increases the availability of the device and the reliability of the system.

The self-supervision system continuously monitors the hardware and the soft

ware of the unit. The system also supervises the operation of the auxiliary

supply module and the level of the electronics’ voltages generated by the

module. If a permanent fault is detected, the fault indicator on the front

panel is lit, the output relay of the self-supervision system operates and

the outputs are blocked.

Auxiliary supply voltage

The auxiliary supply of the relay is obtained from an internal plug-in type

power supply module. Two auxiliary power module types are available:

type SPGU 240A1 for the supply voltage range 80…265 V ac/dc and type

SPGU 48B2 for the supply voltage range 18…80 V dc. The power supply

module forms the internal voltages required by the annunciator.

Design

The annunciator unit is composed of four modules: an alarm annunciator module,

an input/output module, a connection module and a power module, housed

in a rugged aluminium casing.

The alarm annunciator module includes 16 alarm channels. The channels

are activated by normally open or normally closed process contacts.

The required 48 V dc contact circuit voltage is generated and supervised by the

annunciator unit. Each channel can separately be assigned a start delay from

5 ms to 160 s.

On activation of a channel the visual indicator of the channels starts blinking.

One of five standardized blinking systems according to ISA and DIN can be

selected by the operator at commissioning.

The annunciator is provided with a first-out indication given via the four-digit

alphanu merical display on the front panel. The first out alarm is indicated with

a letter A and the channel number.

The annunciator unit is also provided with an event register, which stores the

last nine events in chronological order. The event reg ister can be read via the

push-buttons and the display on the front panel or via the serial interface.

The annunciator holds four output relays, two of which are used as group alarm

output relays. One of five modes of operation can be selected for the realarm

output relays.

One output relay is dedicated for the self supervision system and one for the

control of an audible device, such as a buzzer or a horn. Any information

generated in the annunciator unit can be read by a hierarchically superior

system via the serial interface.

Application

The digital annunciator unit is used in a variety of applications requiring

supervision of alarm and signalling contacts in power plants, substations

and industrial process installations. The alarm unit is also approved for

use in off-shore installations and marine applications.

Further, the annunciator unit can be used in any application where on/off

signals are to be supervised.

The annunciator unit provides immediate fault recognition, fault identification

and visual and audible alarm in an abnormal process situation.

The annunciator unit also provides a means for subsequent fault analyses,

which means that corrective measures can be carried out without delay and

full control of the process can be maintained.

The annunciator units can be used as indepen dent stand-alone units,

or they can be connected together via a fibre-optic bus to form complete

supervision, event sequence reporting and data acquisition systems.

The annunciator unit is a member of SPACOM, the ultimate integrated

secondary equipment system for power systems.

Features

• Flexible, field-customizable 16-channel annunciator unit

• Alarm channels activated by normally open or normally closed contact

• Four output relays, i.e. two for group realarms, one for an audible

device and one for the self-supervision system

• Parameter selection and adjustment from front panel or via serial interface

• First-out alarm indication with clear four digit display on the front panel

• Extensive data communication via the serial interface and the SPA bus

• Sophisticated hardware and software self supervision system for

maximum opera tional reliability under the most demanding

environmental conditions

• Powerful software support for parameter ization of the unit via the

serial interface

• Member of the SPACOM product family and ABB’s Distribution

Automation system

• CE marking according to the EC directive for EMC

Overvoltage unit

When the voltage values exceed the set start value of low-set stage U>,  the overvoltage

unit will start to deliver a start signal after a ~60 ms’ start time. When the set operate time

at definite-time characteristic or the calculated operate time at inverse definite mini

mum time (IDMT) characteristic elapses, the overvoltage unit will deliver a trip signal.

When the voltage values exceed the set start value of high-set stage U>>, the overvoltage

unit will start to deliver a start signal after a ~50 ms’ start time. When the set operate time

at definite-time characteristic or the calculated operate time at IDMT characteristic

elapses, the overvoltage unit will deliver a trip signal.

The low-set and the high-set stage of the overvoltage unit can be given either a defi

nite-time or an IDMT characteristic. At IDMT characteristic, two time/voltage curve

groups, A and B, are available.

It is possible to block the tripping of an over voltage stage by applying an external binary

input signal to the relay.

The high-set stage can be set out of operation. This state will be indicated by dashes on the

LCD and by “999” when the set start value is read via serial communication.

Application

The over and undervoltage relay REU 523 is a secondary relay which is connected to the

voltage transformers of the object to be protected. The over and the undervoltage unit

continuously measure the fundamental wave of the phase-to-phase voltages of the object.

On detection of a fault, the relay will start, trip the circuit breaker, provide alarms, record

fault data, etc., in accordance with the application and the configured relay functions.

The overvoltage unit includes low-set stage U> and high-set stage U>> and the undervolt

age unit low-set stage U< and high-set stage U<<. The high-set undervoltage stage can

alternatively be set to evaluate the positive phase-sequence voltage. In addition, the high

set undervoltage stage can be configured to evaluate only one instead of three phase-to

phase voltages.

The protection functions are independent of each other and have their own setting groups

and data recordings. The over and undervoltage functions use conventional voltage trans

former measurement.

An output contact matrix allows start or trip signals from the protection stages to be

routed to the desired output contact.

Design

The relay includes a high-set and low-set overvoltage unit, a high-set and low-set und

ervoltage unit and a circuit-breaker failure protection unit. Further, the relay includes an

HMI module, a self-supervision system and a disturbance recorder.