The Honeywell 8C-PDISA1 (51454471-275) Digital Input Sequence of Events (SOE) Module is engineered for precise monitoring of 24 VDC discrete signals with advanced time-tagging capability. Designed for high reliability and flexible operation, it ensures accurate event recording down to 1 ms resolution, making it suitable for demanding process automation environments.
Key Functions
Accepts 24 VDC discrete input signals
Provides 1 ms resolution for Sequence of Events (SOE) recording
Supports three operational modes:
Normal scan (20 ms PV)
SOE mode (1 ms resolution, 20 ms PV scan)
Low latency mode (5 ms PV scan)
Built-in diagnostics for data integrity
Optional redundancy for enhanced reliability
Internal or external field power selection
Integrated excitation power (no marshalling required)
This module is ideal for power generation plants, petrochemical facilities, and large-scale process industries where precise event logging and redundancy are critical.
FAQ
Q: Can the 8C-PDISA1 be used in redundant configurations? A: Yes, redundancy is supported with the 8C-TDILB1 IOTA option.
Q: What is the minimum resolution for event recording? A: The module supports 1 ms resolution for SOE logging.
Q: Does the module provide galvanic isolation? A: Yes, optical isolation ensures signal integrity and protection.
