ABB SACO 128R4 Output Relay Subrack

ABB SACO 128R4 Output Relay Subrack Supplier, Exporter in India

ABB SACO 128R4 Auxiliary Relay Unit for SACO Annunciator Systems

ABB SACO 128R4 is an output relay subrack used with ABB SACO 64D4 and SACO 148D4 annunciator systems when additional relay contacts are required for alarm retransmission, group alarms or individual alarm outputs.

The unit is mainly used in larger substations and industrial alarm systems where signals from the annunciator have to be taken to external lamps, control circuits, PLC inputs or other alarm panels. Depending on the number of relay modules installed, SACO 128R4 can provide from 16 up to 128 output relays in one 19-inch rack.

Each relay module contains 16 output relays. The rack can be supplied with one to eight relay modules, so the required capacity can be selected according to the number of alarms that need separate relay contacts.

ABB SACO 128R4 is now a legacy product. Current enquiries are generally for an ABB SACO 128R4 replacement unit, spare relay module, RS 813 288 requirement, or output relay expansion for an existing SACO 64D4 or SACO 148D4 annunciator system.

ABB SACO 128R4 Models and Configurations

SACO 128R4 was supplied in different configurations according to the number of installed relay modules.

SACO 128R4-0

• Power supply module only
• No output relay module
• ABB order number: RS 813 280-AA / BA

SACO 128R4-1

• 1 relay module
• 16 output relays
• ABB order number: RS 813 281-AA / BA

SACO 128R4-2

• 2 relay modules
• 32 output relays
• ABB order number: RS 813 282-AA / BA

SACO 128R4-3

• 3 relay modules
• 48 output relays
• ABB order number: RS 813 283-AA / BA

SACO 128R4-4

• 4 relay modules
• 64 output relays
• ABB order number: RS 813 284-AA / BA

SACO 128R4-5

• 5 relay modules
• 80 output relays
• ABB order number: RS 813 285-AA / BA

SACO 128R4-6

• 6 relay modules
• 96 output relays
• ABB order number: RS 813 286-AA / BA

SACO 128R4-7

• 7 relay modules
• 112 output relays
• ABB order number: RS 813 287-AA / BA

SACO 128R4 – Fully Equipped

• 8 relay modules
• 128 output relays
• ABB order number: RS 813 288-AA / BA

ABB documents these configurations from zero through eight relay modules, with each relay module providing 16 outputs.

Technical Specifications

• Manufacturer: ABB
• Product: Output relay subrack / auxiliary relay unit
• Model: SACO 128R4
• Product family: SACO / SPACOM
• Product status: Legacy / not active since 2009
• Application: Output relay expansion for SACO annunciator systems
• Compatible annunciators: SACO 64D4 and SACO 148D4
• Relay module type: SWOM 16A1
• Relays per module: 16
• Number of relay modules: 1 to 8
• Maximum output relays: 128
• Output contact type: Normally open
• Rated contact voltage: 250 V AC, 50 Hz
• Rated contact current: 3 A
• Breaking capacity at 48 V DC: 1 A
• Breaking capacity at 110 V DC: 0.25 A
• Breaking capacity at 220 V DC: 0.15 A
• Power consumption per energised relay: approximately 0.5 W
• Connection to SACO annunciators: Snap-on flat cable connection
• Rack size: 19-inch
• Rack height: 3U, approximately 133 mm
• Mounting: 19-inch cabinet or panel mounting
• Degree of protection when panel mounted: IP40
• Operating temperature: -10°C to +55°C
• Storage temperature: -40°C to +70°C
• Approximate weight: 7 kg
• Signal grouping option: SACO 64C5 / 64C5B
• Auxiliary supply module options: SWSM 220R48 and SWSM 220R220

ABB specifies a maximum capacity of 128 normally open output relays, 3 A rated contact current, IP40 enclosure protection and the stated environmental ranges.

ABB SACO 128R4 Auxiliary Supply Options

Two power supply module arrangements were available.

SWSM 220R48

• Supply 1: 17–70 V DC
• Supply 2: 80–265 V AC/DC

SWSM 220R220

• Supply 1: 80–265 V DC
• Supply 2: 80–265 V AC/DC

The order-number suffix indicates the auxiliary supply arrangement:

• AA: 80–265 V DC + 80–265 V AC/DC
• BA: 17–70 V DC + 80–265 V AC/DC

This is important when sourcing an ABB SACO 128R4 replacement because the existing power supply arrangement should be matched correctly.

Features

• Up to 128 relay outputs: One rack can hold eight 16-relay modules.
• Modular construction: Relay capacity can be selected from 16 to 128 outputs.
• Withdrawable relay modules: Makes servicing and replacement easier in existing installations.
• Direct connection to SACO annunciators: Flat cable connections are used with SACO 64D4 and SACO 148D4.
• Individual alarm retransmission: A separate relay contact can be provided for individual annunciator
• channels.
• Group alarm outputs: Multiple alarm signals can be routed to common external alarm contacts.
• Suitable for separate lamp panels: Frequently used where annunciator indications have to be repeated on another panel.
• Dual auxiliary supply inputs: Allows the output relay system to be supplied from two sources.
• Signal grouping with SACO 64C5: Alarm signals can be grouped before they reach the output relay rack.
• 19-inch rack construction: Suitable for control and relay cabinets.
• Part of the ABB SPACOM system: Designed to work with older ABB substation automation and annunciator equipment.

ABB specifically describes the rack as a compact, flexible auxiliary relay subrack with withdrawable modules and flat-cable connection to SACO 64D4 and SACO 148D4.

ABB SACO 128R4 with SACO 64D4 and SACO 148D4

The SACO 128R4 is normally used as an extension to SACO 64D4 and SACO 148D4.

A common requirement is to provide a separate external contact for each alarm channel. In this arrangement, the annunciator detects and processes the alarm while SACO 128R4 provides the relay contact required for an external lamp panel, remote alarm system or another control circuit.

Where several alarm signals need to be combined first, SACO 64C5B can be installed between the annunciator and SACO 128R4.

A typical arrangement is:

SACO 64D4 / SACO 148D4 → SACO 64C5B → SACO 128R4

The SACO 64C5B handles signal grouping, and the SACO 128R4 provides the physical output relay contacts.

Applications

ABB SACO 128R4 can be found in:

• Electrical substations
• Power generation plants
• Substation control rooms
• Alarm annunciator panels
• Separate alarm lamp panels
• Medium-voltage switchgear control systems
• Transformer control panels
• Generator control systems
• Industrial process plants
• Utility alarm systems
• Oil and gas facilities
• Petrochemical plants
• Steel plants
• Cement plants
• Mining installations
• Existing ABB SACO 64D4 systems
• Existing ABB SACO 148D4 systems
• ABB SPACOM control and annunciation systems
• Legacy substation refurbishment projects

Typical requirements include applications where a separate relay contact is required from every alarm channel or where a large number of alarm outputs have to be grouped and retransmitted.

ABB SACO 128R4 Replacement and Spare Requirements

Since SACO 128R4 is no longer an active ABB product, buyers generally search for it when maintaining an existing SACO annunciator installation.

Common requirements include:

• ABB SACO 128R4 replacement rack
• SACO 128R4 spare unit
• SACO 128R4-1 to SACO 128R4-7
• RS 813 281 to RS 813 288 relay subrack
• SWOM 16A1 relay module
• SWSM 220R48 power supply module
• SWSM 220R220 power supply module
• Relay extension for SACO 64D4
• Relay extension for SACO 148D4
• ABB SPACOM annunciator spare parts

For quotation, buyers should share:

• Existing SACO 128R4 model
• Complete ABB order number
• Number of relay modules installed
• Required number of output contacts
• Auxiliary supply voltage
• Existing power supply module
• SACO 64D4 or SACO 148D4 details
• SACO 64C5 details, if fitted
• Nameplate photograph
• Quantity
• End-user / project country

The exact configuration matters because RS 813 281, RS 813 282, RS 813 283 and the other order numbers correspond to different numbers of relay modules.

Looking for ABB SACO 128R4 Output Relay Subrack?

We handle enquiries for ABB SACO 128R4 output relay subracks, SACO 128R4 replacement units, SWOM 16A1 relay modules and spare requirements for existing SACO 64D4 and SACO 148D4 annunciator systems.

For an ABB SACO 128R4 supplier in India, RS 813 288 replacement unit, SACO 128R4 auxiliary relay unit, ABB annunciator output relay expansion or legacy SPACOM spare requirement, send the complete order number, auxiliary supply, required relay capacity, quantity and destination country for quotation.