Siemens LMO44.255C2 , Sequence Controller
Siemens LMO44.255C2 , Sequence Controller
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Product Overview
The Siemens LMO44.255C2 is a microprocessor-based burner control unit specifically designed for the startup, supervision, and control of oil burners used in stationary air heaters in intermittent operation. It is engineered to provide high-precision timing and advanced safety monitoring, ensuring compliant operation for burners where a specific safety time ($t_{TSA}$) of 5 seconds and a pre-purge time ($t_1$) of 25 seconds are required.
Technical Specifications
Technical Specifications
Feature: Technical Data
Product Model: Siemens LMO44.255C2
Operating Voltage: AC 220 V – 240 V
Frequency: 50...60 Hz
Pre-purge Time ($t_1$): 25 Seconds
Safety Time ($t_{TSA}$): 5 Seconds
Pre-ignition Time ($t_3$): 2 Seconds
Degree of Protection: IP40
Application: 1 or 2-Stage Oil Burners (with/without Pre-heater)
Key Features
Key Features
Microprocessor Intelligence: High-precision timing sequences that remain stable regardless of voltage fluctuations.
Multicolor LED: Integrated visual status indicator and diagnostic system for simplified maintenance and troubleshooting.
Undervoltage Detection: Critical safety feature that triggers a controlled shutdown if power levels drop below the operating threshold.
Flame Supervision: Fully compatible with QRB (photoresistive) and QRC (blue-flame) detectors for reliable monitoring.
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