Author Archives: rsmodules

Honeywell 51403645-100 SBHM | Single Board History Module for TDC3000/TPS LCN Nodes – Field Service Notes

Component Snapshot At-a-Glance Model: 51403645-100 (SBHM, Single Board History Module) Alt. P/N: 51403698-100 dual-drive SBHM variant; legacy multi-card disk subsystems cannot cross-substitute Product Series: Honeywell TDC3000 / TPS LCN Local Control Network Hardware Type: Full-width rack slot integrated storage processor board, hot-swap capable Key Feature: Onboard 1.8GB SCSI hard drive + dedicated history CPU, eliminates…

Honeywell 51401583-100 EPNI | NIM Main Logic LCN-UCN Bridge Board for TDC3000/TPS DCS – Field Service Notes

Component Snapshot At-a-Glance Model: 51401583-100 (EPNI, Enhanced Process Network Interface, NIM main logic board) Alt. P/N: Legacy PNI 51401582-100 + PNM modem split board pair; cannot cross-substitute Product Series: Honeywell TDC3000 / TPS LCN + UCN dual network NIM chassis Hardware Type: Full-width rack slot main processor board for Network Interface Module (NIM) Key Feature:…

Honeywell 51306673-100 EPNI | Ethernet Peripheral Network Interface Card for TDC3000/TPS DCS – Field Service Notes

Component Snapshot At-a-Glance Model: 51306673-100 (Internal designation EPNI, Enhanced Processor Node Interface) Alt. P/N: No direct cross-replacement; older ENB Ethernet boards lack full LCN traffic offload capacity Product Series: Honeywell TDC3000 / TPS LCN Local Control Network DCS Hardware Type: Full-width rack slot Ethernet gateway processor board, hot-swap capable Key Feature: Dedicated on-board communication CPU…

Honeywell 51305072-200 | CLCN-A Primary LCN Paddle Board for TDC3000/TPS DCS – Field Service Notes

Component Snapshot At-a-Glance Model: 51305072-200 (CLCN-A) Alt. P/N: 51305072-300 (CLCN-B secondary redundant counterpart) Product Series: Honeywell TDC3000 / TPS LCN Local Control Network Hardware Type: Single-width slot LCN primary coax paddle board, hot-swap capable Key Feature: Factory calibrated 75Ω impedance matching for primary LCN-A trunk coax with on-board signal equalization Primary Field Use: Provide primary…

Honeywell 51305896-200 | NIM Modem UCN Communication Board for TDC3000/TPS DCS – Field Service Notes

Component Snapshot At-a-Glance Model: 51305896-200 Alt. P/N: No direct cross-replacement; supersedes older PNM/PNI modem hardware, factory PWA NIM Modem CE Product Series: Honeywell TDC3000 / TPS DCS UCN Network Interface Module (NIM) family Hardware Type: Slot-mounted UCN rack modem communication PCB with dual coax UCN ports + RS485 Modbus terminal header Key Feature: Dual redundant…

HIMA F8627 | HSR Redundant Ethernet Coprocessor for H41q/H51q HIQuad QMR SIS – Field Service Notes

Component Snapshot At-a-Glance Model: F8627 (updated revision F8627X) Alt. P/N: 984862765 factory full part number; F8621A is lower-performance single-Ethernet sibling Product Series: HIMA HIQuad H41q / H51q QMR Safety Instrumented System Hardware Type: 4TE DIN rack-mounted redundant HSR/Ethernet communication coprocessor Key Feature: Dedicated HSR high-speed redundant safety ring port + isolated 10/100 Ethernet to offload…