ABB SACO 16A3 Analog Annunciator Unit

ABB SACO 16A3 Analog Annunciator Unit Supplier, Exporter in India

ABB SACO 16A3 16-Channel Analog Alarm Annunciator

ABB SACO 16A3 is a 16-channel analog annunciator used for monitoring measured process and electrical values such as temperature, current, voltage and power. Unlike digital annunciators that mainly supervise ON/OFF contacts, SACO 16A3 accepts analog signals from sensors and transducers and generates alarms when the measured value moves outside the selected limits.

The unit was commonly installed in substations, power plants, industrial process plants and offshore installations where operators needed continuous supervision of several analog parameters from a central panel.
Each of the 16 channels can be configured separately. Depending on the application, SACO 16A3 can accept standard mA and voltage signals, Pt and Ni temperature sensors, resistance inputs and contact signals. Each channel can have separate high and low alarm or trip settings.

ABB SACO 16A3 is now a discontinued legacy product. Current enquiries are therefore generally for an ABB SACO 16A3 replacement annunciator, spare unit, existing panel requirement or replacement of a failed SACO analog annunciator. For such requirements, the complete order number and auxiliary supply voltage should be checked before quotation.

Technical Specifications

• Manufacturer: ABB
• Product: Analog annunciator unit
• Model: SACO 16A3
• Product family: SACO / SPACOM
• Product status: Legacy / not active since 2009
• Number of analog input channels: 16
• Selectable input signal types: 26 standard configurations
• Current inputs: 0–5 mA, 1–5 mA, 0–20 mA and 4–20 mA
• Voltage inputs: 0–1 V, 0–5 V, 1–5 V, 0–10 V and 2–10 V
• Temperature sensor inputs: Pt100, Pt250, Pt1000, Ni100, Ni120, Ni250 and Ni1000
• Selectable Pt or Ni resistance range: 65–1000 Ω
• Potentiometric input ranges: 0–200 Ω, 0–500 Ω, 0–1 kΩ, 0–2 kΩ, 0–2.5 kΩ and 0–10 kΩ
• Contact input function: Available
• Alarm/trip levels: Up to four per channel
• Alarm levels: Two high and two low set points
• Alternative settings: High/low limits with rise-time and fall-time supervision
• Channel starting delay: 0–255 seconds
• Channel resetting delay: 0–255 seconds
• Measuring accuracy: Approximately 0.5% of scale range
• Signal filtering: Selectable
• Transducer supply: 24 V DC ±10%
• Maximum transducer supply current: 320 mA
• Event storage: Latest 30 events with time markings
• Display: Bar graph, curve and numerical presentation
• Fixed group alarm relay outputs: 6
• Additional control outputs: 16 for connection to external relay equipment
• Audible alarm relay: 1
• Internal fault / self-supervision relay: 1
• Relay contact rating: 3 A / 250 V AC or DC
• Serial communication: Available
• Communication system: ABB SPA bus
• Interface options: RS-485, RS-232, plastic fibre and glass fibre depending on accessory
• Communication speed: 300–9600 baud
• Protocol: SPA protocol / ASCII communication
• Standard auxiliary supply range: 80–265 V AC/DC
• Optional low-voltage supply: 18–80 V DC
• Power consumption: Approximately 20–30 W
• Mounting: Flush mounting; semi-flush and 19-inch mounting accessories available

Input Signals Supported by SACO 16A3

One of the main advantages of SACO 16A3 was the variety of signals that could be connected directly to the annunciator.

For electrical measurements, standard measuring transducers can provide signals such as:

• 0–20 mA
• 4–20 mA
• 0–10 V
• 2–10 V
• 1–5 V

For temperature monitoring, the unit can accept several Pt and Ni sensor types directly.

This allowed one SACO 16A3 panel to monitor different parameters such as transformer temperature, bearing temperature, current, voltage, power and other process measurements without using a separate annunciator for every type of signal.

Features

• 16 independent analog channels: Different process and electrical measurements can be supervised from one unit.
• 26 selectable input signal types: Each channel can be configured according to the connected sensor or transducer.
• Four alarm levels per channel: Two low and two high limits can be set for each measurement channel.
• Analog and contact inputs: SACO 16A3 can handle both measured analog values and selected contact signals.
• Direct temperature sensor connection: Supports commonly used Pt and Ni temperature sensors.
• 4–20 mA and standard transducer inputs: Suitable for a wide range of industrial measuring transducers.
• Adjustable alarm delays: Starting and resetting delays can be set independently to prevent unnecessary alarms from short-term fluctuations.
• Event recording: Stores the latest 30 events with time information for subsequent checking.
• Multiple display formats: Operators can view measured and set values numerically, as a bar graph or in curve form.
• Group alarm outputs: Alarm channels can be grouped for external annunciation or retransmission.
• External relay expansion: Additional outputs can be connected to ABB SACO 128R4 relay equipment where more relay contacts are required.
• SPA bus communication: Allows measured values, alarms and events to be transferred to higher-level monitoring systems.
• Front-panel programming: Settings can be changed locally without requiring complete system reprogramming.
• Serial parameter setting: Configuration and measured values can also be accessed through the communication interface.
• Internal self-supervision: Continuously supervises the hardware, software and auxiliary supply circuits.

Applications

ABB SACO 16A3 was used for analog alarm and measurement supervision in:

• Electrical substations
• Power generation plants
• Transformer monitoring panels
• Generator control panels
• Industrial process plants
• Oil and gas facilities
• Petrochemical plants
• Offshore installations
• Marine control systems
• Steel plants
• Cement plants
• Mining installations
• Water treatment plants
• Pumping stations
• Utility control rooms
• Central alarm panels
• Existing ABB SPACOM systems
• Legacy SACO annunciator replacement projects

Typical measurements monitored through SACO 16A3 include:

• Transformer temperature
• Motor and generator temperature
• Bearing temperature
• Electrical current
• Electrical voltage
• Active or reactive power
• Process pressure through a transducer
• Process level through a transducer
• Flow measurements
• Other 4–20 mA process signals

ABB SACO 16A3 Order Number and Supply Options

ABB documentation identifies different SACO 16A3 ordering arrangements.

Typical order numbers include:

• RS 812 016-AA – SACO 16A3 with 80–265 V AC/DC auxiliary supply
• RS 812 016-BA – SACO 16A3 with 18–80 V DC auxiliary supply
• RS 812 015-AA / BA – SACO 16A3 version without the front-panel dot-matrix display

The final letters identify the auxiliary supply arrangement:

• AA: 80–265 V AC/DC
• BA: 18–80 V DC

For an existing installation, the complete order number should therefore be taken from the installed unit rather than specifying only “SACO 16A3.”

ABB SACO 16A3 Replacement Requirements

ABB SACO 16A3 has been inactive since 2009, but many units can still be found in older substations, power plants and industrial control panels.

Buyers searching for an ABB SACO 16A3 replacement annunciator should provide as much information about the existing unit as possible.

Useful details include:

• SACO 16A3 nameplate photograph
• Complete ABB order number
• Auxiliary supply voltage
• Existing input signal types
• Number of channels being used
• Existing SPA communication arrangement
• Connected sensors or transducers
• Required quantity
• Project or end-user location
• Destination country

These details are particularly important because a replacement requirement may involve matching an existing 4–20 mA, Pt100, voltage or other analog-input arrangement.

Looking for ABB SACO 16A3 Analog Annunciator?

We handle enquiries for ABB SACO 16A3 analog annunciators, legacy SACO annunciator requirements, replacement units and spare requirements for existing ABB alarm panels.

For an ABB SACO 16A3 supplier in India, SACO 16A3 replacement annunciator, 16-channel analog annunciator, SACO 16A3 4–20 mA annunciator or ABB legacy annunciator export requirement, send the complete model, order number, auxiliary voltage, quantity and destination country for quotation and availability checking.