The ABB SACO64D4 AA358 is a high-performance, modular digital annunciator unit designed for demanding industrial environments. Part of the renowned SACO series, this unit provides reliable centralized alarm signaling and monitoring for power plants, substations, and complex manufacturing processes. It is engineered to bridge the gap between field sensors and control room operators, ensuring that critical status changes are captured with millisecond precision and displayed with absolute clarity.
Product Technical Specification
The technical core of the SACO64D4 AA358 lies in its advanced microprocessor logic. It features high electromagnetic compatibility (EMC) levels to prevent false triggering in high-voltage environments. The unit supports multiple signaling sequences (e.g., ISA standard sequences) and offers integrated self-supervision. It includes an internal bus system that allows for easy expansion and integration into larger SCADA systems through dedicated communication gateways.
Product Parameters
Product Name: Digital Annunciator Unit Model: SACO64D4 AA358 Brand: ABB Supply Voltage: 110-240 V AC/DC or 24-60 V DC (Version dependent) Input Channels: 64 Channels Response Time: 5-160 ms (Adjustable) Power Consumption: ~15-30 W depending on active LEDs Degree of Protection: IP40 (Front), IP20 (Terminals) Mounting Type: Flush mounting or 19-inch rack Communication Protocol: SPA-bus (Optional LonTalk/Modbus via gateway) Operating Temperature: -10 to +55 degrees Celsius
Country of Origin
Finland (ABB Power Grids / Distribution Solutions)
Application Fields
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Power Transmission and Distribution: Monitoring circuit breaker statuses and transformer alarms in substations.
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Oil & Gas: Tracking pressure, temperature, and emergency shutdown (ESD) triggers.
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Marine Engineering: Centralized alarm management for engine rooms and bridge systems on large vessels.
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Heavy Industry: Monitoring critical machinery health in steel mills and chemical processing plants.
Product Instructions for Use
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Installation: Mount the unit in a standard cutout on the control panel. Ensure sufficient ventilation space behind the unit.
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Wiring: Connect the power supply to the designated terminals. Input signals should be wired using shielded cables to minimize interference.
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Configuration: Use the front-panel DIP switches or the SPACON configuration software to define alarm sequences (e.g., manual reset vs. auto-reset).
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Testing: Utilize the “Lamp Test” button to verify all LED indicators are functional before commissioning.
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Operation: When an alarm occurs, the corresponding LED will flash. Press the “Acknowledge” button to steady the light, and “Reset” once the fault is cleared.
Q&A – Frequently Asked Questions
Q: Can the SACO64D4 AA358 be connected to a computer for remote monitoring? A: Yes, by using the SPA-bus communication port and a suitable gateway (like the SPA-ZC series), you can integrate the data into a SCADA or PC-based monitoring system.
Q: What happens if the internal power supply fails? A: The unit features a “Self-Supervision” (IRF) relay. If the internal logic or power fails, the IRF contact changes state, allowing you to trigger an external emergency siren or backup alarm.
Q: Is it possible to change the color of the alarm windows? A: The standard units come with red or yellow LEDs. While the hardware is fixed, different legend plates (transparencies) can be inserted behind the windows to change the text or symbol displayed.
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