Products Description
Overview
The ICS Triplex T8850 (part number 1092350000) is a 40-channel analog or digital output Field Terminal Assembly (FTA) designed for use in TRUSTED ICS (TMR) safety and critical control systems from ICS Triplex (now part of Schneider Electric / Foxboro). It serves as the primary interface between TMR output modules (e.g., T8451, T8461, T8480) and field devices.
Key Specifications
| Parameter | Details |
|---|---|
| Channels | 40 output channels per FTA |
| Output Type | Analog OR Digital (selectable per group) |
| Field Voltage | 24 VDC standard; up to 60 VDC via T8290 |
| Channel Grouping | 5 isolated groups of 8 channels each |
| Isolation | 50 V Reinforced (Ch-to-Ch within group); 250 V Basic (fault) |
| Field Wiring | 2-wire industry-standard connections; 12–28 AWG |
| Terminals | Screw clamp on both field and power sides |
| SmartSlot | Yes — enables "one-to-many" hot swap of output modules |
| LED Indication | Green LED per power group (field supply presence) |
| Mounting | ICS Triplex T8000 standard rack; DIN rail compatible |
| Dimensions | ~160 mm × 100 mm × 30 mm (some sources cite 110 × 360 × 68 mm for FTA variant) |
| Weight | ~290 g (module); ~950 g (FTA) |
| Operating Temp | 0 °C to +60 °C |
| Storage Temp | −25 °C to +70 °C |
| Humidity | 10% – 95% non-condensing |
| Cybersecurity | Secure boot, role-based access control, encrypted firmware updates (ISA/IEC 62443) |
| Certification | SIL-capable (part of TRUSTED TMR architecture, SIL 1–3) |

ICS T8850 Key Features:
Fault-Tolerant Architecture:Dual-channel processing with voting mechanisms ensures uninterrupted operation;Redundant design safeguards critical processes and prevents costly downtime by maintaining functionality even if a single component fails.
Flexible I/O Capabilities:Supports both analog and digital I/O for precise control and monitoring;Accommodates diverse industrial process requirements.
High-Performance Communication:Utilizes Trusted Inter Module Bus (IMB) for high-speed and reliable communication between modules and the system controller;
Ensures timely and accurate process control and monitoring.
Comprehensive Diagnostics:Sophisticated monitoring continuously checks the health and status of components;Proactive fault detection identifies and isolates faults to minimize unplanned downtime and supports predictive maintenance strategies.
DIN Rail Mounting:Designed for easy installation on DIN rail mounting systems;Compact form factor maximizes space within control systems.

