Honeywell 51120841-101 DCS Module (Unik Series)

Honeywell 51120841-101 Module (Unik Series)

Technical Details:

• Model Numbers: EC7830A or EC7850A
• Site-Configurable Jumper Options:
  • Three jumper options for configuration settings
  • Jumpers are read at startup and locked into internal memory after 200 hours of Main Valve operation
  • Altering the jumpers after lock-in will cause the module to lock out, ensuring no modifications can be made post-installation

Operational Sequence:

• INITIATE Sequence:
  • The module enters the INITIATE sequence when the Relay Module is powered or if it detects voltage or frequency fluctuations.
  • Voltage fluctuation tolerance: +10/-15%
  • Frequency fluctuation tolerance: +/-10%
  • The INITIATE sequence lasts for two seconds if tolerances are met. Otherwise, a hold condition is initiated if tolerances are not met.

Features:

• Safety Feature: The module locks configuration jumper settings into its internal memory after a specified operational period to prevent post-installation modifications.
• Voltage and Frequency Monitoring: Ensures stability by entering the INITIATE sequence or hold condition when voltage or frequency fluctuations are detected, protecting the system from potential damage or incorrect operation.