Features:
- Processes sixteen optically isolated digital inputs for sequence-of-events collection.
- Supports documented 24 VDC, 48 VDC, 125 VDC, and 120 VAC field arrangements.
- Uses the expander bus while leaving the time-synchronization-link function to SET01 hardware.
The current product is SED01, the ABB sequence-of-events digital input function documented for the SPSED01 configuration.
It captures discrete state changes and passes event information through the Harmony expander-bus architecture for chronological analysis.
Before replacement, verify the exact code, input voltage, SPSET01 timing relationship, segment population, rack position, and migration requirements.
Availability is subject to Apter Power inventory and sourcing confirmation.
Verified resources for ABB SED01:
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Captures breaker, trip, alarm, permissive, and equipment-state transitions for chronological event review.
- Supports root-cause analysis in turbine, boiler, power, and continuous-process protection systems.
- Maintains legacy Harmony sequence-of-events installations or supports planned migration to the documented SI06ev path.
- Captures state changes from sixteen discrete field channels for sequence-of-events processing.
- Distributes event information through the expander-bus arrangement to the system event architecture.
- Supports reconstruction of equipment trips when field signals and the companion timing source are correctly engineered.
- Uses optical input isolation to separate field signals from module-side event-processing electronics.
- Allows missing events to be traced across field voltage, wiring, termination, rack, and expander-bus paths.
- Requires verification of the voltage-specific input arrangement and SPSET01 timing relationship during troubleshooting.
- Identifies SPSED01 as the version without the time-synchronization link assigned to SPSET01.
- Supports up to 63 SPSED01 modules on a documented segment with one SPSET01 timing module.
- Uses SI06ev as ABB’s documented one-to-one replacement path, subject to project-specific timing and wiring checks.