ABB SACO64D4 AA358

The ABB SACO64D4 is a high-performance digital annunciator unit based on microprocessor technology. As a component of the ABB SPACOM system, it is an integrated secondary equipment system specially designed for power distribution networks. The device is primarily applied to monitor alarm and signal contacts in power plants, substations, and industrial process installations.

Main Parameters

Electrical Parameters

Parameter Item	Specification
Field Contact Input Voltage	48V DC (generated and monitored by the device)
Auxiliary Power Supply 1	19-70V DC or 80-256V AC/DC
Auxiliary Power Supply 2	80-265V AC/DC
Power Module Model	SWSM 220A48 or SWSM 220A220
Redundant Power Supply	Dual-power supply with automatic seamless switching

Channel Parameters

Parameter Item	Specification
Alarm Channels	64 independent channels (4×16-channel modules)
Input Delay	8 preset levels: 5ms/20ms/100ms/1s/5s/20s/60s/160s
Contact Type	Multiple modes including NO/NC, normally open/normally closed without return, and dual contact
Event Recording Resolution	Better than 10 milliseconds
Output Relays	16 relays (14 for grouped alarms, 1 for buzzer control, 1 for self-supervision)

Mechanical Parameters

Parameter Item	Specification
Installation Method	19-inch rack mounting / panel mounting
Rack Height	3U (approximately 133mm)
Module Dimension	Euroformat 100×160mm
Ingress Protection Rating	IP40 (for panel mounting installation)
Material	Anodized aluminum frame, galvanized steel backplane

Product Features

Core Advantages

• High Reliability: Compliant with international safety standards IEC 61508 and ISO 13849, achieving safety levels of PL e/Cat 4 and SIL3.
• Powerful Fault Diagnosis: Equipped with a built-in hardware and software self-supervision system, ensuring stable operation in extreme environments.
• Dual Alarm Mechanism: Adopts dual visual (indicator light) and auditory (buzzer) alarm modes to quickly locate abnormal conditions.
• Flexible Configuration: Supports expansion to a maximum of 35 modules via serial interfaces, with a total of 560 available channels.

Functional Characteristics

• Supports optical fiber or electrical data bus communication.
• Enables geographically distributed configuration through SPA-bus or LON-bus.
• Can be connected to station-level computers for data acquisition and control.
• Features 16 freely programmable grouped alarm output relays per group.
• Supports event log storage (recording the latest 9 events).
• Supports cross-subrack alarm signal routing and synchronous flashing function.

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