Generator alarm annunciator ALM-CH4

for marine applicationsfor hazardous areasmodule

The ALM-CH4 4-channel fault annunciator is installed on the electrical cabinet panel. It is simple, and compact, and enhances wiring efficiency. These universal alarms are suitable for power control and monitoring systems. The alarm utilizes a highly reliable MCU to monitor external status in real time. When an abnormality occurs, the corresponding indicator light on the panel illuminates, the buzzer sounds an alarm, and the alarm relay responds promptly. The alarm can be muted, reset, tested, etc., by pressing buttons. The product supports RS-485 digital interface communication (utilizing the MODBUS-RTU communication protocol). - Flashing alarm lights remain until confirmed; - Customizable or replaceable alarm light labels; - Reliable passive relay contact outputs; - Centralized alarm output for multiple signals; - Self-fault alarm with normally closed contact; - Sound alarm interface supports external devices; - Flexible alarm confirmation logic with real-time updates; - Modular design for easy installation and maintenance. Caractéristiques / Spécifications techniques : - Operating voltage: 85-265VAC/DC (±10~15%), optional 24VDC - Rated power: ≤8W - Fault signal inputs: 4 channels - Response time: ≤100ms - Flashing frequency: >1Hz - Relay outputs: 3 channels - Panel protection level: Front: IP54; Rear: IP20 - Communication: RS485 Modbus RTU - Indication method: LED indicator or text panel - Insulation performance: 2.5 kV AC RMS 1 minute, between input / output / case / power supply; - Operating environment: Temperature: -20°C ~+60°C; Humidity: Annual avg. ≤75%, max ≤93% - Wiring terminal: 0.2…2.5mm² - Working cycle: 100% - Installation method: Panel mount - Dimension: Frame size 96×96 mm; hole size:91x91mm Applications : - Power generation and distribution systems; - Industrial manufacturing and production facilities; - Oil, gas, and petrochemical processing plants; - Data centers and server farm operations; - Railway, aviation, and maritime transportation systems; - Heating, ventilation, and air conditioning (HVAC) systems.