TRICONEX 2381 PI2381 Digital Input Baseplate

The TRICONEX 2381 PI2381 Digital Input Baseplate is the Model 2381 pulse input (PI) baseplate of the Triconex/Trident TMR safety system — the mounting baseplate for Tricon pulse input modules that provides backplane connectivity and field-wiring termination optimized for high-speed pulse-signal routing. Per the official Trident Planning and Installation Manual, it serves a 6-point PI module with dual field-power inputs (PS1/PS2), blown-fuse indication, shielding, and safety-resistor/configuration/sensor blocks.
Key Features

1. Pulse input (PI) baseplate for Triconex / Trident TMR safety systems (Model 2381)
2. Mounting baseplate for Tricon pulse input modules — backplane connectivity + field termination
3. Supports 6-point PI module configuration
4. Dual field-power inputs (PS1/PS2) with blown-fuse indicator
5. Sensor block, configuration block and safety-resistor block for field wiring
6. Differential and single-ended input signal modes supported
7. Made in USA

1. Model: 2381 (PI2381)
2. Part Number: 7400221-100
3. Product Type: Pulse input baseplate
4. System: Triconex / Trident TMR safety system (SIS)
5. Module Support: 6-point PI module
6. Field Power: Dual inputs PS1/PS2, +24 V class field supply
7. Signal Inputs: Differential / single-ended
8. Max Operating Voltage: ±33 V DC
9. Kit Contents: I/O baseplate, interconnect assembly, slot cover, terminal cover (3000719-100 / 2921 / 2900 / 2901)
10. Note: Unused points must be terminated
11. Origin: USA

1. Verify the baseplate part number (7400221-100) and kit contents against the Trident/Tricon system documentation before installation.
2. Install the baseplate in the chassis slot; secure it and connect the backplane/interconnect assembly.
3. Wire field connections per the manual — observe +24 V #1/#2, 24 V Return, shield and safety-resistor/config/sensor block wiring.
4. Terminate all unused points to avoid false inputs.
5. After installation, verify PI signal readings via the TMR diagnostics and perform a pulse-input loop test before returning the safety system to service.

1. What is the Model 2381? It is the pulse input (PI) baseplate of the Triconex/Trident TMR safety system — the mounting baseplate for Tricon pulse input modules, providing backplane connectivity and field-wiring termination.
2. What does the kit include? The baseplate kit comprises the I/O baseplate, interconnect assembly, slot cover and terminal cover (3000719-100 / 2921 / 2900 / 2901, per Triconex parts data).
3. What input modes does it support? Differential and single-ended pulse signals; differential inputs require 500 mV p-p (2 Hz–32 kHz) or 1 V p-p (0.5–2 Hz) per service data.
4. What is the field power arrangement? Dual field-power inputs PS1/PS2 (+24 V class) with a blown-fuse indicator.

Xingchuang Ronghe (Fuzhou) Electrical Equipment Co., Ltd. is dedicated to delivering high-quality electrical equipment solutions, backed by professional product supply capabilities and a comprehensive technical service system. We stay customer-centric, continuously optimizing product performance and service experience. If you have any needs, you are welcome to contact us at any time for consultation and discussion. We look forward to partnering with you to create value together!