T8891 ICS Triplex Trusted TMR Speed Output Field Terminal Assy SOFTA
Introduction:
The ICS Triplex T8891 is a Speed Output Field Terminal Assy (SOFTA) for the Trusted TMR System. This assembly interfaces field devices with the Trusted TMR speed output module. The T8891 provides reliable termination for speed control applications. It works with the Trusted T8442 power supply module. Use this assembly for critical turbine and motor speed control.
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Technical Specifications of T8891
Manufacturer: ICS Triplex (now part of Schneider Electric)
Catalog Series: Trusted TMR System
Part Number: T8891
Description: Speed Output Field Terminal Assy (SOFTA)
Supply Source: Receives power from T8442 module (no direct supply rating)
Output Rating (AC): Handles 3A at 120Vac
Output Rating (DC): Handles 2A at 30Vdc
RA Part Number: 3AX185
Terminal Block Type: Screw clamp for secure connections
Torque Specification: 0.5 N.m for proper tightening
Wire Size Range: Accepts 30 to 12 AWG (0.05 to 2.5 mm²)
Cable Terminations per TB: Maximum 1 conductor per terminal
Product Features and Benefits
TMR Architecture: Supports triple modular redundancy for high availability.
Speed Output Control: Designed specifically for speed output applications.
Screw Clamp Terminals: Provides reliable and vibration-resistant connections.
Wide Wire Range: Accepts 30-12 AWG for flexible installation.
Compact Design: Integrates easily into Trusted TMR system cabinets.
High Current Capacity: Delivers 3A at 120Vac or 2A at 30Vdc outputs.
Installation and Wiring Guide
Mount the T8891 on a standard DIN rail inside your control cabinet. Connect the assembly to the T8442 power supply module for operation. Use the screw clamp terminals for all field wiring connections. Tighten each terminal to exactly 0.5 N.m of torque. Do not exceed one wire per terminal block position. Strip wires to the appropriate length before insertion. Use wire sizes between 30 AWG and 12 AWG only. Verify the output load does not exceed 3A at 120Vac. For DC loads, keep current below 2A at 30Vdc. Connect the assembly to the Trusted TMR speed output module. Follow all ICS Triplex safety guidelines during installation.
Package Contents
One ICS Triplex T8891 Speed Output Field Terminal Assembly.
Screw clamp terminal blocks (pre-installed on the assembly).
Product documentation and installation guide.
Frequently Asked Questions (FAQ)
Q: Which power supply works with the T8891 assembly?
A: The T8891 receives power from the Trusted T8442 module. It has no independent supply rating.
Q: Can I use this assembly for 24Vdc output applications?
A: Yes, the T8891 handles DC outputs up to 30Vdc at 2A. This covers most 24Vdc applications.
Q: What is the RA part number 3AX185 used for?
A: The RA part number 3AX185 is the replacement terminal block kit. Order this for spare terminal blocks.
Q: Why can I only put one wire per terminal?
A: The design allows only one conductor per terminal for reliable connections. Use external junction points for multiple wires.
Q: Is the T8891 compatible with non-Trusted systems?
A: No, the T8891 is designed specifically for the Trusted TMR System. It requires Trusted architecture for proper operation.
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