ICS Triplex T8151B | Trusted 40-Channel Digital Output Module

Description Product Introduction Safety systems don’t just trip solenoids—they trip them with absolute certainty. The T8151B sits in a Trusted rack and drives up to 40 field devices, using three independent output circuits per point to guarantee that if one leg fails, the output still switches correctly. It’s TMR all the way down. What’s the “B” revision? It’s the enhanced version with faster line monitoring and improved diagnostics. In my experience, the T8151B is the standard for emergency shutdown (ESD) and fire & gas systems in offshore and refining applications. Each channel is line-monitored for open circuits and shorts, reporting faults without tripping the output. You can hot-swap it while the system runs—trust me, that’s a big deal during turnaround maintenance. Key Technical Specifications Parameter Value Model T8151B Brand ICS Triplex / Rockwell Automation Series Trusted Product Type Digital Output Module (TMR) Number of Channels 40 Output Type 24 VDC sourcing (PNP) Current Rating 2 A per channel continuous Inrush Current 10 A for 100 ms Architecture TMR (three independent output legs per channel) Line Monitoring Open circuit, short circuit (field-side) Fault Tolerance 1 fault (any single leg fails, output still functions) Isolation 1500 V field-to-backplane Response Time < 20 ms (typical) Backplane Current 2.5 A @ 5 VDC (typical) Field Power Required 24 VDC external (supplied separately) LED Indicators Channel status, module health, leg health Hot Swappable Yes (with system running) Temperature Rating 0 °C to 60 °C operating Certifications TÜV SIL 3, IEC 61508, ISA S84.01  Firmware / Software Versions & Upgrade Notes The T8151B runs its own firmware that manages the output voting, line monitoring, and backplane communication. Firmware Version: Version 3.2 or later is recommended. Earlier versions (v2.x) had a known issue with the line monitoring timing—the module would occasionally flag an open circuit on a healthy channel during system startup. v3.2 fixed the false alarm rate. Compatibility: Works with Trusted TMR Controller (T8100, T8110, etc.) Requires Trusted Toolset software v4.5 or higher For SIL 3 applications, use with certified Trusted chassis and power supplies Configuration: Use Trusted Toolset to: Assign module to slot in chassis configuration Configure each channel’s output type (energize-to-trip vs. de-energize-to-trip) Set line monitoring thresholds (resistance values for open/short detection) Define failure modes (hold last state, go to safe state) Upgrade Process: Backup the system database in Trusted Toolset Download firmware .bin file from Rockwell (requires access) Connect to the Trusted Controller via Ethernet or serial Select “Firmware Update” for the T8151B slot Transfer takes about 2 minutes; module reboots automatically Critical: The module will be out of service during update. The TMR system will tolerate it (other legs still work), but plan for reduced redundancy during the window. Rollback: You can downgrade, but only to v2.x or higher. v1.x firmware is not compatible with the T8151B hardware. Check the release notes.  Compatibility & Replacement Matrix Use this when maintaining or upgrading Trusted safety systems. Original Model Replacement Model Compatibility Level Key Notes T8151B T8151B Drop-in Identical part. Direct replacement. T8151A T8151B Drop-in T8151A is the previous revision. T8151B supersedes it. Same form factor, same wiring. Enhanced diagnostics. Direct replacement. T8151B T8151C Drop-in T8151C is a later revision (if released). Should be backward compatible. Check firmware requirements. T8151B T8153B Incompatible T8153B is a digital input module. Completely different function. T8151B T8310 Incompatible T8310 is an analog output module. Different termination, different configuration. ACH401602532 PLC ACH401 B04122 PLC ACH501-015-2-00P2 PLC ACH501-020-4-NOP2 PLC ACH501-030-4-00P2 PLC ACH504-060-4-00P0 PLC Email: [email protected] Phone: 86 15340683922 Sales:Wu Jiedong Our products are guaranteed for 1 year, with new and original production stopped and imported spare parts. All prices listed on the official website are subject to confirmation by contact: Wu Jiedong (manager). Our product: brand new original packaging Our warranty: All new or repaired parts have a 12 month warranty period beginning Our payment: 100% telegraphic transfer of inventory items before shipment, conditions can be proposed! If you have any downtime spare parts that you cannot find, please feel free to call or use email to contact me. If there are issues that the product cannot solve, please contact me. Product prices can be negotiated. Please do not consider contacting me!