Technical Specifications Module Type: Alarm Logic Processing Module Input Signal: Dry contact alarm trigger signal Output Form: Programmable relay contact output Operating Power: 24 VDC Operating Temperature: 0 °C to +60 °C Storage Temperature: ‑40 °C to +85 °C Relative Humidity: 5%‑95%, non‑condensing Mounting: Standard rack slot plug‑in installation Certifications: CE industrial control equipment compliance
Functional Features Multi‑channel alarm signal receiving and logic identification function. Alarm status latch and manual reset function for abnormal events. Local LED status indication for alarm and fault conditions. Relay contact output drives external on‑site alarm devices. Upload alarm event timestamp and fault information to host system.
Application Scenarios Applied in petrochemical, chemical and power plant process control cabinets. It cooperates with DCS and PLC system to realize on‑site process over‑limit, equipment fault alarm notification function.
Structural Characteristics Standard rack‑mount plug‑in modular housing. Gold‑plated back‑plane connector for power and signal interconnection. Front‑panel LED indicator for alarm status display. Screw terminal block for external alarm signal wiring.
Working Principle When external alarm trigger signal is input to the module, internal circuit completes signal filtering and logic judgment. If alarm condition is satisfied, the module latches alarm state, activates front‑panel indication and relay contact output, meanwhile sends alarm event message to upper‑level control system. The alarm state can be cleared by manual reset operation.
Installation Requirements Insert 2AX‑ALM‑AR module into designated slot of standard system rack. Lock module mechanical buckle to ensure reliable back‑plane connection. Complete external alarm trigger signal and output contact wiring according to official drawing. Carry out alarm function test after power‑on.
Usage Notes Do not exceed rated contact load for external alarm loop. Check module alarm indication status periodically during system operation. Cut off rack power supply before module disassembly and maintenance.
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