Description
ABB SACO16D1 16-Channel Digital Alarm Annunciator
1. Product Overview
Model: SACO16D1 (SACO16D1-AA is the mainstream variant), belonging to ABB SPACOM substation secondary automation product portfolio. It is a 16-channel discrete signal monitoring unit, widely deployed in excitation cabinets, generator sets, integrated substation protection systems, marine power plants and offshore platforms. It collects passive contact signals including protection tripping, fan malfunction, switch position and overtemperature alarm. Equipped with front-panel LED indicators and digital display for first-out fault indication, the unit is matched with UNITROL excitation systems and REG670 protection relays, certified with CE and DNV marine approvals.
Basic Information
- Product Name: 16-channel programmable digital alarm annunciator
- Product Series: SACO series site-specific alarm annunciators for power stations
- Mounting: Panel flush mounting inside control cabinet
- Application: Secondary alarm signal collection for thermal/hydro/gas turbine excitation systems, high & low voltage power distribution rooms and marine electrical systems
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2. Electrical & Hardware Specifications
2.1 Power Supply
- Main auxiliary supply: Wide-range AC 80~265V / DC 80~265V (standard with SPGU240A1 power board); low voltage version DC 18~80V (SPGU48B2)
- Internal loop supply: Built-in isolated DC48V for powering field passive DI contacts with galvanic isolation between internal and external circuits
- Total power consumption: ≤18VA
- Dielectric strength: Withstands AC2000V/1min insulation test between terminals and earth
2.2 I/O Configuration
表格Interface Type Specification Application DI Digital Input 16-channel passive contact input; NO/NC configurable individually; channel delay adjustable 5ms~160s Acquire signals of protection operation, field breaker status, cooling system fault and unit abnormal alarms DO Relay Output 4-channel dry contact relay rated AC250V/5A: 2 common alarm outputs, 1 audible alarm output, 1 unit self-diagnosis fault output Control external buzzer, remote DCS alarm and fault interlock 2.3 Communication Interfaces
- SPA Bus (ABB proprietary protocol): Connect to REG670 protection relays, UNITROL excitation controllers and upper SCADA/DCS systems
- RS232 debug port: On-site parameter configuration, event log download and channel logic programming
2.4 Mechanical & Ambient Parameters
- Panel cutout dimension: W251mm × H142mm; unit depth: 229mm (excluding mounting frame)
- Ingress Protection: IP54 for front panel with transparent dust cover; IP20 inside cabinet
- Temperature: Operating -10℃~+55℃; Storage -40℃~+70℃
- Humidity: 5%~95% RH non-condensing, compliant with IEC60068 and DNV marine environmental standards
- Net weight: Approx.3.1kg
3. Core Functions
- First-out fault logic: 4-digit digital display locks the first triggered alarm channel, prioritizing the initial fault point under multiple fault conditions, standard design for power system application.
- 16 independent LED status lamps with 5 ISA/DIN compliant flashing modes: OFF in normal state, flashing during fault, steady ON after acknowledgement, OFF after reset.
- Periodic full hardware & software self-test; dedicated fault DO contact activates automatically upon power failure or internal malfunction.
- Event memory: Stores no less than 500 time-stamped alarm records for remote uploading via communication.
- Individual channel enable/disable and anti-chatter delay configurable to adapt to unstable field contact signals.
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