Description
The ABB SACO16D1-AA is a compact, microprocessor-based digital alarm annunciator designed for high-reliability monitoring of industrial processes and power substations. This 16-channel unit provides clear visual and audible signaling for status changes and fault conditions, ensuring operators can respond rapidly to critical system alerts.
Key Specifications
- Model Number: SACO16D1-AA
- Channel Count: 16 Binary Inputs
- Alarm Windows: 16 Integrated LED Display Fields
- Supply Voltage: 110-240V AC / 110-240V DC
- Mounting: Flush-mount / Panel-mount
- Interface: Front-panel Reset, Test, and Acknowledge buttons
Technical Parameters
- Input Voltage (Signal): 110V DC / 220V DC (selectable)
- Response Time: < 50ms (programmable filtering)
- Output Contacts: 2 common alarm relays + 2 service relays
- Communication: SPA-bus / RS-485 serial interface
- Insulation Test Voltage: 2.0 kV, 50 Hz, 1 min

Application Fields
- Electrical substation protection and monitoring
- Power generation plant control panels
- Marine and offshore vessel alarm systems
- Heavy industrial motor control centers
- Critical infrastructure emergency signaling
Product Q&A
- Q: Can I program the alarm sequence?
- A: Yes, the SACO16D1 supports standard ISA alarm sequences (e.g., A, M, R-8) configurable via internal DIP switches.
- Q: Does it support remote communication?
- A: Yes, it features an integrated SPA-bus interface for connection to higher-level SCADA or substation automation systems.
- Q: Are the legend plates customizable?
- A: The front-facing alarm windows allow for easy insertion of printed film or paper labels to identify specific fault types.
- Q: What happens during a power failure?
- A: The unit stores its current alarm status in non-volatile memory, ensuring data integrity upon power restoration.
