When an Elevator Stops Without a Mechanical Fault,
The Cause Lies in the Power Supply
Power & Communication Quality Diagnostics
If unexplained errors and unexpected shutdowns continue even after component replacement and mechanical repairs, it's time to look beyond the mechanical system. Modern elevators are sophisticated electronic systems built with thousands of precision semiconductor components. Invisible power noise, harmonic distortion, and communication instability are often the root causes of control system malfunctions.
GLS is the only elevator design and supervision consulting firm in Korea capable of providing both power quality and communication quality diagnostics. Going beyond mechanical engineering, we deliver electrical and electronic engineering solutions to resolve failures that others cannot.
Why Power Quality Diagnostics?
Three-Phase Power Quality Logger
Identifying communication errors caused by electrical noise
and floor indicator malfunctions.
High-Performance Oscilloscope
Resolving intermittent "ghost faults"
that occur without any mechanical cause.
Digital Multimeter
Resolving operational errors caused by
power interruptions, voltage sags, and harmonic distortion.
Many facilities waste valuable budgets by focusing solely on mechanical component replacement.
GLS delivers precise power and communication quality diagnostics using advanced measurement equipment and industry-leading expertise.
Key Diagnostic Areas
❶ Precision Power Quality Diagnostics
Evaluates the integrity of the elevator power supply to identify conditions that can critically affect the control system.
Harmonic Analysis
Evaluates the impact of harmonic currents generated by inverters and other equipment on surrounding electrical systems.
Voltage Stability Assessment
Measures voltage sags, swells, and voltage unbalance to evaluate power supply stability.
Grounding & Leakage Current Assessment
Analyzes grounding resistance and unwanted leakage currents to identify the risk of electric shock and system malfunctions.
❷ Communication Quality & Noise Diagnostics
Analyzes communication signals between the control panel, elevator car, and hall buttons
to identify the causes of data loss and communication errors.
Communication Line Noise Measurement
Analysis of electromagnetic interference (EMI/EMC) affecting the control panel communication lines
Bit Error Rate (BER) Inspection
Diagnoses communication and command errors caused by signal distortion
❷ Communication Quality & Noise Diagnostics
Analyzes communication signals between the control panel, elevator car, and hall buttons to identify the causes of data loss and communication errors.
Communication Line Noise Measurement
Analyzes electromagnetic interference (EMI/EMC) affecting the control panel communication lines
Bit Error Rate (BER) Inspection
Diagnoses communication and command errors caused by signal distortion
Head Office / Suite 707, 361 Simin-daero, Dongan-gu, Anyang-si, Gyeonggi-do, Republic of Korea Branch Office / #109 UR lssdadigasi31, Issha 3-chome, Meito-ku, Nagoya, Aichi, Japan
Three-Phase Power Quality Logger 
High-Performance Oscilloscope 
Digital Multimeter 
