Foxboro P0924TT Annunciator Keyboard

Product Overview

The Foxboro P0924TT Annunciator Keyboard is a dedicated operator interface accessory designed for alarm handling within Foxboro I/A Series DCS environments.
It provides tactile control and clear annunciation, allowing operators to respond to alarms quickly during normal operation or abnormal situations.
Moreover, the keyboard integrates seamlessly with Foxboro control architectures, supporting reliable human–machine interaction in critical industrial processes.
Therefore, many plants continue using this model to maintain consistent operating practices across legacy and modernized systems.

Functional Highlights

First, the P0924TT offers forty-eight LED and switch key pairs, enabling clear visual feedback and confident operator actions.
In addition, dedicated annunciator and macro keys simplify alarm acknowledgment, silencing, and reset procedures during high-pressure events.
Moreover, the USB Type-A connection supplies power and communication through a single interface, reducing wiring complexity inside control panels.
As a result, operators benefit from faster alarm response and improved situational awareness during plant upsets.

Technical Specifications

The following specifications describe typical performance values used in industrial automation installations.

• Product Type: USB Annunciator Keyboard

• Model Number: P0924TT

• Key Arrangement: 48 LED/switch pairs, arranged in 5 rows of 12 keys

• Macro Keys: 12 programmable macro keys included

• Power Supply: 5 VDC ±5% via USB Type-A connection

• Power Consumption: 300 mA maximum

• Audio Output Impedance: 1200 Ohms nominal

• Audio Output Level: 0.437 to 0.133 Vrms, adjustable from maximum to minimum volume

• Peak Audio Amplitude: 0.437 Vpk square wave

• Operating Temperature: 0 to 40 °C (32 to 104 °F)

• Storage Temperature: -40 to +70 °C (-40 to 158 °F)

• Humidity Range: 20% to 80% RH, non-condensing

• Weight: 4.1 lbs

Typical Applications

For instance, the P0924TT commonly supports alarm panels in process plants such as oil, gas, chemical, and power generation facilities.
Moreover, it integrates with Foxboro I/A Series and Evo™ DCS systems, complementing operator workstations and traditional control consoles.
Therefore, facilities maintaining long-life Foxboro systems often select this keyboard to preserve familiar alarm workflows.

Reliability and Support

Foxboro designed this annunciator keyboard for continuous industrial use, emphasizing stable operation and consistent tactile response.
In addition, refurbished units typically undergo functional testing, making them suitable for maintenance spares and system expansions.

FAQ

Q: Is the Foxboro P0924TT compatible with modern Foxboro Evo™ systems?
A: Yes, the keyboard supports Foxboro I/A Series and Evo™ DCS configurations when properly integrated.

Q: How is the P0924TT powered during operation?
A: The unit receives 5 VDC power directly through its USB Type-A connection.

Q: Does the keyboard include audible alarm output?
A: Yes, it provides an audio output signal with a nominal 1200 Ohm impedance.

Q: Is this product still manufactured by Schneider Electric?
A: The model is considered legacy, although new or refurbished units remain available through industrial suppliers.

Q: What environments suit the P0924TT annunciator keyboard best?
A: It performs reliably in control rooms and panels within specified temperature and humidity ranges.