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ABB SPSED01 SOE Digital Input Module 16 Channels Sequence of Events

The ABB SPSED01 (also referred to as SED01) is a specialized SOE Digital Input submodule that processes 16 digital field inputs. It works in conjunction with the SPSET01 master module (which provides the high-accuracy time synchronization link) to deliver detailed Sequence of Events recording. This enables operators to reconstruct the exact sequence of events during process disturbances, improving troubleshooting, safety, and system reliability. Up to 63 SPSED01 modules can be connected per I/O expansion bus segment alongside one SPSET01.

• 16 Optically Isolated Digital Inputs: Supports various voltage levels (24 VDC, 48 VDC, 125 VDC, 120 VAC for control logic).

• Sequence of Events (SOE) Functionality: High-resolution timestamping for precise event ordering and analysis.

• High-Speed Event Capture: Designed for real-time monitoring of critical status changes.

• Modular Design: Compact submodule for easy integration into Harmony rack systems.

• Scalability: Supports multiple modules per bus segment for large I/O counts.

• Robust Isolation: Optical isolation protects against noise and ground loops common in industrial environments.

• Proven Reliability: Widely used in power generation, oil & gas, and process industries with ABB DCS systems.

• Easy Maintenance: Hot-swappable in many configurations with diagnostic support.

• Product Type: SOE Digital Input Module (16 Channels)

• Ordering Code: SPSED01

• Channels: 16 optically isolated digital inputs

• Power Requirements: +5 VDC (±5%), typical current 350 mA

• Input Voltage Options: 24 VDC, 48 VDC, 125 VDC, 120 VAC (limited)

• Time Synchronization: Via SPSET01 master module

• Ambient Temperature: 0°C to +70°C (32°F to 158°F)

• Dimensions: Approx. 2.75 in (L) × 14 in (H) × 10.5 in (W) (module/packaging reference)

• Weight: Approx. 0.4–0.8 kg

• Compatibility: ABB Symphony Plus, Harmony, INFI 90, Bailey systems

• Mounting: Rack-mounted with appropriate terminal units (e.g., NFTP01)

• Power generation plants (turbine, boiler, and auxiliary system monitoring)

• Oil & gas and petrochemical facilities

• Chemical and process industries

• Sequence of Events recording for DCS/SCADA systems

• Post-incident analysis and regulatory compliance

• High-availability control systems requiring detailed event forensics

Q: What is the primary function of the ABB SPSED01?A: It is a 16-channel digital input module optimized for Sequence of Events (SOE) recording, capturing and timestamping digital signals for accurate event sequencing.

Q: Does it require a separate module for time synchronization?A: Yes, it works together with the SPSET01 module, which provides the high-accuracy time synch link to the controller.

Q: How many SPSED01 modules can be used in one segment?A: Up to 63 SPSED01 modules per I/O expansion bus segment when paired with one SPSET01.

Q: What input voltage levels does it support?A: Common options include 24 VDC, 48 VDC, 125 VDC, and 120 VAC (for system control logic).

Q: Is it compatible with ABB Symphony Plus?A: Yes, it is fully compatible with Symphony Plus HR Series and legacy Harmony/INFI 90 systems.

Q: What is the power consumption?A: Typically 350 mA at +5 VDC.

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