ABB SACO 64D4 Digital Annunciator Unit

ABB SACO 64D4 Digital Annunciator Unit Supplier & Exporter in India

ABB SACO 64D4 64-Channel Alarm Annunciator

ABB SACO 64D4 is a microprocessor-based digital annunciator designed for applications where a larger number of alarm and signalling contacts have to be monitored from one location. A fully equipped SACO 64D4 provides 64 alarm channels, making it suitable for substations, power stations, industrial plants and large electrical control rooms where 16-channel annunciators may not provide enough capacity.

The unit gives operators visual and audible warning when an alarm contact changes state and also records the sequence of events for later fault analysis. It can operate as a standalone annunciator or be connected with other SACO units to build a centralised or distributed alarm monitoring system.

SACO 64D4 is particularly useful for projects requiring a 64-channel alarm annunciator for substation panels, power plant control panels or industrial process alarm systems. Multiple units can be interconnected, and ABB documents systems containing up to 560 alarm channels.

For replacement requirements, buyers should provide the complete SACO 64D4 designation, channel configuration, auxiliary supply voltage and nameplate details because the unit was available in different channel capacities and power-supply arrangements.

ABB SACO 64D4 Models and Channel Configurations

SACO 64D4 is more than one fixed 64-channel arrangement. ABB documentation identifies configurations based on the number of installed 16-channel annunciator modules:

ABB SACO 64D4-1

16-channel configuration

Used where one 16-channel annunciator module is installed in the SACO 64D4 rack.

ABB SACO 64D4-2

32-channel configuration

Uses two 16-channel annunciator modules for applications requiring up to 32 alarm points.

ABB SACO 64D4-3

48-channel configuration

Uses three annunciator modules and provides 48 alarm channels. ABB documentation gives SACO 64D4-3 as an ordering example for a 48-channel unit.

ABB SACO 64D4 – Fully Equipped

64-channel configuration

The complete configuration contains four 16-channel annunciator modules, providing a total of 64 alarm channels.

These configurations are important for replacement enquiries. A buyer asking only for “ABB SACO 64D4” should ideally confirm whether the existing installation is a 16-, 32-, 48- or 64-channel arrangement.

Technical Specifications

• Manufacturer: ABB
• Product: Digital alarm annunciator unit
• Model: SACO 64D4
• Product family: SACO / SPACOM
• Maximum number of alarm channels: 64
• Available channel configurations: 16, 32, 48 and 64 channels
• Basic construction: Up to four 16-channel SACO 16D2B annunciator modules
• Input contact operation: Normally open or normally closed
• Field contact voltage: 48 V DC ±20%
• Field contact loop current: 4 mA ±20%
• Input/reset delay settings: 5 ms, 20 ms, 100 ms, 1 s, 5 s, 20 s, 60 s or 160 s
• Pulse counter function: Available
• Maximum pulse-counting frequency: 3 Hz
• Built-in output relays: 16
• Group/reflash alarm relays: 14
• Audible alarm output: 1 relay
• Self-supervision output: 1 relay
• Parallel lamp outputs: Up to 64 with additional SACO 128R4 relay equipment
• External acknowledgement: Available
• External alarm reset: Available
• External audible alarm reset: Available
• Remote test input: Available
• Serial communication: Supported
• Communication system: SPA bus
• Fibre-optic or electrical bus connection: Available
• Data communication: ASCII
• Communication speed: Depending on interface/configuration
• Event recording time resolution: Better than approximately 10 ms
• Maximum interconnected annunciator system: 560 channels
• Auxiliary power module options: SWSM 220A48 and SWSM 220A220
• SWSM 220A48 supply 1: 19–70 V DC
• SWSM 220A48 supply 2: 80–265 V AC/DC
• SWSM 220A220 supply 1: 80–265 V DC
• SWSM 220A220 supply 2: 80–265 V AC/DC
• Approximate power consumption: 20 W
• Operating temperature: -10°C to +55°C
• Storage temperature: -40°C to +70°C
• Enclosure protection: IP40
• Approximate weight: 8.1 kg
• Construction: 19-inch rack, 3U height

ABB’s manuals confirm the modular 16/32/48/64-channel arrangements, dual auxiliary-supply design, field contact ratings and environmental specifications.

Features

• Up to 64 alarm channels: Suitable for large panels where a number of alarms need to be brought to one annunciation point.
• Different channel capacities: SACO 64D4 can be configured with 16, 32, 48 or 64 channels depending on the installed modules.
• NO or NC field contacts: Each alarm channel can be configured according to the contact arrangement used in the field.
• Centralised alarm indication: Allows operators to see multiple plant, feeder or equipment alarms from one annunciator rack.
• Visual and audible alarms: Provides local alarm indication together with an output for an external horn or audible device.
• Group alarm outputs: Fourteen built-in relay outputs can be used for alarm grouping and retransmission.
• Event sequence recording: Useful when several alarms operate around the same time and the maintenance team needs to establish the sequence of events.
• Fast event time marking: ABB specifies approximately 10 ms event time resolution for interconnected annunciation systems.
• Expandable system: Multiple SACO units can be interconnected for much larger alarm systems.
• Up to 560 channels in one system: Suitable for centralised power plant and large industrial alarm schemes.
• Field programmable: Alarm functions, delays, groupings and interlocking arrangements can be configured for the installation.
• SPA bus communication: Enables integration with higher-level ABB monitoring and substation automation systems.
• Electrical or fibre-optic communication: Useful for both centralised and geographically distributed annunciation systems.
• Self-supervision: Internal supervision monitors the annunciator electronics and supply functions.
• Redundant auxiliary supply arrangement: SACO 64D4 can accept two supply sources, with one operating as backup when both are connected.
• Output expansion: SACO 128R4 can be used where additional parallel lamp, signal follower or relay outputs are required.
• ABB describes SACO 64D4 as suitable for both standalone installations and large centralised or distributed annunciation systems with event reporting.
• ABB SACO 64D4 for Large Alarm Annunciation Systems
• The main reason to select SACO 64D4 over smaller annunciators such as SACO 16D1 or SACO 16D3 is the number of signals that can be handled in one rack.

A single fully equipped SACO 64D4 can monitor 64 alarm contacts. Where the installation has even more alarm points, several units can be connected through the communication bus. ABB specifies a maximum system size of 35 individual 16-channel modules, giving a total of 560 channels.

This type of arrangement can be useful in large substations, generating stations and process plants where alarms from transformers, switchgear, generators, auxiliary systems and other equipment need to be collected at a central control location.

Applications

ABB SACO 64D4 is suitable for alarm and status monitoring in:

• Electrical substations
• Power generation plants
• Medium-voltage switchgear
• High-voltage substation control rooms
• Transformer control and protection panels
• Generator control panels
• Main control rooms
• Industrial process plants
• Oil and gas installations
• Petrochemical plants
• Steel and metal plants
• Cement plants
• Mining facilities
• Water treatment plants
• Pumping stations
• Marine electrical installations
• Offshore platforms
• Building electrical control systems
• Utility alarm monitoring systems
• Large MCC and distribution panels
• Existing SACO annunciator replacement projects

ABB specifically identifies power plants, substations, industrial processes, marine and offshore installations, building technical systems and water-treatment installations among SACO 64D4 applications.

SACO 64D4 Communication and System Integration

SACO 64D4 can be used as a completely independent alarm annunciator, but larger installations often use its communication capability.

The unit can communicate over the ABB SPA bus, with electrical or fibre-optic connection modules available. Several annunciator racks can therefore form part of a centralised or distributed alarm system. ABB documentation also describes connection to higher-level systems for event reporting and data acquisition.

Typical communication accessories documented for the SACO system include SPA-ZC series electrical and fibre-optic bus connection modules.

SACO 64D4 and SACO 128R4

For installations that require more relay outputs than those available directly from the annunciator, the ABB SACO 128R4 auxiliary relay unit can be used with SACO 64D4.

The additional relay arrangement can be used for:

• Parallel alarm lamp outputs
• Field contact follower outputs
• Signal retransmission
• Additional group alarms
• Interface with external control or indication circuits

ABB documents up to 64 parallel lamp outputs from the SACO 64D4 arrangement when additional relay equipment such as SACO 128R4 is used.

ABB SACO 64D4 Replacement and Spare Requirements

SACO 64D4 is commonly found in long-running power and industrial installations. As a result, many commercial enquiries are for an existing ABB SACO 64D4 replacement, spare unit, annunciator module or power supply module rather than a completely new annunciation system.

Before quoting a replacement, the following details should be checked:

• Complete model designation
• SACO 64D4-1, 64D4-2, 64D4-3 or full configuration
• Number of alarm channels required
• ABB ordering number
• Existing nameplate photograph
• Auxiliary supply voltage 1
• Auxiliary supply voltage 2, if used
• Power supply module type
• Existing communication arrangement
• SPA bus connection module, if fitted
• Required accessories
• Quantity
• End-user/project country

ABB’s own ordering instructions call for the type designation, ordering number, auxiliary supply voltages and accessories to be specified when identifying a SACO 64D4 unit.

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For an ABB SACO 64D4 annunciator quotation, 64-channel alarm annunciator requirement, SACO 64D4 replacement unit, SACO annunciator spare module or export requirement from India, share the complete model, ABB ordering number, auxiliary supply, channel requirement, quantity and destination country.