RTK Instruments P725-S-5W1H-6T-16A-SL-R-T-FC125-AD3-SEC Annunciator

Product Parameters

• Model Number: P725-S-5W1H-6T-16A-SL-R-T-FC125-AD3-SEC
• Manufacturer: RTK Instruments (Ametek Group)
• Series: P725 Programmable Alarm Annunciator
• Window Configuration: 16-Way (16 alarm points)
• Window Size: Small (S) – 30 x 30 mm
• Power Supply: 85-264 Vac / 88-300 Vdc (FC125/AD3 high voltage range)
• Input Type: Opto-isolated inputs (Dry contact or Powered)
• Output Relays: Dual common alarm relays (Critical/Non-critical)
• Communication: RS485 Modbus (optional, check specific sub-coding)

Product Description The P725 is a flagship modular alarm annunciator designed to provide high-reliability visual and audible alerts for industrial processes. This specific configuration features 16 alarm windows in a compact “Small” format. The unit uses ultra-bright, maintenance-free LEDs to ensure visibility in high-ambient light conditions. It is fully field-programmable, allowing users to select alarm sequences (ISA sequences), delays, and relay functions without the need for specialized software. The P725 is renowned for its rugged design, featuring high noise immunity and isolation to protect against electrical surges in harsh industrial environments.

Product Applications The RTK P725 is widely used in power generation, transmission substations, and chemical processing plants to monitor critical equipment statuses. It serves as the primary human-machine interface for Emergency Shutdown (ESD) monitoring and fire & gas detection systems. Because of its high reliability and “first-out” alarm capture capability, it is essential for control rooms where operators must quickly identify the root cause of complex system trips.

Product Specifications

• Weight: 3.10 kg (Variable by configuration)
• Dimensions: 144 mm (H) x 144 mm (W) (Standard DIN cutout for 16-way small)
• Country of Origin: United Kingdom (UK)
• Operating Temperature: -20°C to +60°C
• Illumination: Red, Amber, or White LEDs (Selectable per window)

Operational Precautions

• Logic Programming: Use the internal DIP switches or the front-panel pushbutton “programming mode” to set the ISA alarm sequence (e.g., Sequence A, M, or R) before commissioning.
• Window Removal: To replace legend inserts, use the supplied suction tool to remove the window lens; avoid using screwdrivers which can scratch the high-grade plastic.
• Terminal Tightening: Ensure all rear screw terminals are tightened to the specified torque; loose connections on the common return path can cause multiple “ghost” alarms.
• Supply Voltage: Verify that the supply voltage matches the “FC125” code (High Voltage) to avoid damaging the internal power filter module.

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