The MTL RTK 725B is a sophisticated combined annunciator and event recorder designed for monitoring critical alarms in industrial processes, regardless of system size or complexity. Utilizing CANBUS communication technology and a multi-redundant design, it offers exceptional reliability with no single point of failure.

The 725B accepts bipolar inputs (AC and DC voltages) for up to 256 alarm channels, with event recording at 1ms resolution for detailed post-event analysis. Outputs include up to 32 relays and two integral audible alarms. Modular construction allows assembly in almost any shape and size, with a choice of three window sizes and six colors.

Comprehensive diagnostics monitor all aspects of system operation, with fault indication via front-panel LEDs and an optional diagnostic relay for remote indication. The system can also monitor field contact voltage, providing early warning of wiring problems and ground faults.

Configuration is straightforward via a standard USB connection to a PC or laptop, with support for multiple communication protocols including RS485 Modbus, RTK/AMS (timestamping), TCP/IP DNP3.0, and IEC6185. An optional integral power supply accepts 85-264VAC and 88-300VDC.

Typical applications include:

• Critical alarm monitoring in process industries
• Power generation and distribution
• Oil and gas facilities
• Water and wastewater treatment

Features

• Up to 256 alarm channels, modular expansion
• Bipolar inputs: accepts AC and DC voltages
• 1ms event recording resolution
• Up to 32 output relays
• 2 integral audible alarms
• CANBUS internal communication, multi-redundant design
• Isolated RS485 serial (2 or 4 wire)
• Optional protocols: Modbus, DNP3.0, IEC6185
• Optional integral power supply (85-264VAC / 88-300VDC)
• Comprehensive diagnostics with fault indication
• Modular construction, choice of window sizes and colors
• Configuration via USB