Siemens XTRI-D Dual Input Interface Module P/N:S54370-B2-A1

The Siemens XTRI-D Dual Input Interface Module P/N: S54370-B2-A1 is an intelligent addressable interface device designed for compatible Siemens fire alarm systems. It provides two independently supervised input circuits for monitoring normally open or normally closed dry-contact devices.

The XTRI-D incorporates Siemens ISOtechnology with dual built-in isolators, providing enhanced signaling-line circuit survivability and short-circuit isolation. It can also operate in a polarity-insensitive configuration when isolation functionality is not required.

Product Functions

• Provides two independently supervised inputs
• Monitors dry-contact initiating devices
• Supports normally open contacts
• Supports normally closed contacts
• Provides individual input monitoring
• Incorporates dual built-in isolators
• Supports Class X circuit configurations
• Provides short-circuit isolation
• Supports polarity-insensitive operation
• Provides multi-color LED status indication
• Supports electronic device programming
• Interfaces conventional contact devices with addressable systems
• Designed for compatible Siemens fire alarm systems

Dual Input Operation

The XTRI-D provides two monitored circuits:

Input 1

Input 2

Each input can independently monitor a dry-contact field device and communicate its status to the compatible Siemens fire alarm control panel.

This allows two initiating or supervisory functions to be monitored from a single intelligent interface module.

Dry Contact Monitoring

The XTRI-D supports:

Normally Open (N.O.)

and

Normally Closed (N.C.)

dry-contact devices.

Typical connected devices can include:

• Waterflow switches
• Valve supervisory switches
• Pressure switches
• Conventional pull stations
• Equipment status contacts
• Other approved dry-contact devices

The response assigned to each monitored input depends on the programming of the connected fire alarm system.

Built-In Dual Isolators

The XTRI-D incorporates:

Two built-in line isolators

When configured in isolator mode, the module can isolate a signaling-line short occurring on either side of the device.

This helps maintain communication with unaffected sections of the addressable circuit during certain wiring faults.

Class X Capability

The built-in ISOtechnology allows the XTRI-D to support enhanced Class X signaling-line circuit configurations with compatible Siemens equipment.

The integrated isolators can reduce the need for separate external isolation modules while improving circuit survivability and fault localization.

Short-Circuit Diagnostics

The dual-isolator architecture can help compatible Siemens systems determine whether a signaling-line short is located:

Before the XTRI-D

or

After the XTRI-D

This provides additional diagnostic information for troubleshooting addressable circuit faults.

Polarity-Insensitive Operation

The XTRI-D can also operate in:

Polarity-Insensitive Mode

This configuration can be used when the built-in isolation functionality is not required.

The appropriate operating mode depends on the system design, wiring configuration, and compatible Siemens control equipment.

Multi-Color LED

The XTRI-D incorporates a multi-color status LED.

Typical indications include:

Green: Normal supervisory operation

Yellow: Trouble condition

Red: Locate or active condition

The LED provides local visual indication of module and circuit status.

Electronic Address Programming

The XTRI-D uses electronic device addressing rather than mechanical DIP or rotary switches.

Compatible programming equipment includes:

DPU — Device Programmer / Test Unit

The programmer allows the device address to be assigned and verified electronically.

XTRI-D vs. HTRI-D

The XTRI-D is a newer-generation Siemens dual-input interface module compared with the legacy HTRI-D.

HTRI-D: Dual-input intelligent interface with polarity-insensitive operation

XTRI-D: Dual-input intelligent interface with integrated dual isolators and Class X capability

The XTRI-D therefore provides additional circuit-survivability and fault-isolation capabilities.

Electrical & Interface Information

Model: XTRI-D

Part Number: S54370-B2-A1

Device Type: Intelligent Dual Input Interface Module

Inputs: Two

Contact Types: N.O. / N.C. Dry Contacts

Operating Voltage: 13–32 VDC

Maximum Active/Standby Current: 500 µA

Maximum Average Current: 650 µA

Built-In Isolators: Two

Operating Modes: Isolator / Polarity Insensitive

Wire Size: 18–14 AWG

Operating Temperature: 32°F to 120°F / 0°C to 49°C

Relative Humidity: 0–95%, non-condensing

Status Indicator: Multi-color LED

XTRI-D Datasheet