Description
Honeywell SC-TCMX01 51307198-175
Technical Specifications Plugs into the controller expansion bus; backplane 5VDC supply; on-board precision real time clock crystal oscillator; sequence of event timestamp resolution configurable to sub-millisecond; on-board backup capacitor for time retention during power interruption; operating temperature 0℃ to 60℃; storage temperature -40℃ to 85℃; humidity 5% to 95% non-condensing; supports external time synchronization input.
Functional Features It provides the controller with an accurate real time clock for process alarms, event logging and trend time stamping. It captures sequence of event timestamps with high resolution for interlock and shutdown analysis. It maintains clock accuracy during short main power dropout. It accepts external time synchronization reference from the LCN network or master clock source. It detects crystal drift and clock fault conditions and uploads diagnostic alarms to the operator station.
Application Scenarios Sequence of event recording for safety interlock analysis in refineries; accurate alarm time stamping for batch production records; time synchronization for distributed TDC3000 controllers in power plants; audit trail and regulatory time stamping for pharmaceutical and food production.
Performance Parameters Clock drift within crystal specification over operating temperature; SOE timestamp resolution meets interlock sequence analysis requirements; backup capacitor retains clock for hours during power loss; time synchronization locks to external reference within configurable tolerance.
Material Composition FR4 flame retardant PCB with conformal coating; temperature compensated crystal oscillator; gold plated expansion bus connector; backup energy storage capacitor; metal retention bracket.
Structural Characteristics Small vertical daughter card plugged into the PM/APM expansion slot; front edge has power and clock fault LEDs; elastic locking clips; passive cooling.
Working Principle The on-board crystal oscillator generates a stable time base. The controller reads time and date values from the SC-TCMX01 during alarm and event generation. When discrete inputs or transitions occur, the module latches a high resolution timestamp for sequence of event recording. During main power loss the backup capacitor keeps the RTC running. When an external time reference arrives, the module synchronizes its clock and reports any accumulated drift.
Installation Requirements Power off the controller before inserting the card. Press firmly into the expansion slot until clips lock. Configure time synchronization source and timezone in engineering software after power up. Cabinet grounding resistance ≤4Ω. Wear anti-static wrist strap.
Usage Notes Replace the backup capacitor every few years per maintenance schedule to ensure clock retention during power loss. Configure the external time sync source before relying on SOE records for regulatory audit. The card is not hot-swappable. Verify clock drift after extended operation.
