Elevator Magnetic Switch Leveling Sensor HDYG-1A & SEK-YG1A (a.b): Precision Positioning for Safe Elevator Operation

Proper Usage Methods of Elevator Magnetic Switch Leveling Sensor HDYG-1A & SEK-YG1A (a.b)

1. Installation & Calibration

• First, thoroughly clean the installation position (on the elevator car frame or guide rail bracket) to remove dust, oil stains, and debris, ensuring a stable and flat mounting base for the sensor.
• Fix the sensor firmly using matching bolts and nuts. The installation height must be calibrated according to the elevator’s floor level: the sensor’s induction surface should be aligned with the magnetic strip installed on the guide rail, with a horizontal gap of 3–5mm (standard range). For SEK-YG1A (a.b), pay attention to the direction of the signal output interface to ensure convenient and correct wiring. The tightening torque of the bolts should comply with technical requirements (typically 8–12 N·m) to avoid loosening due to elevator vibration.
• Correctly connect the sensor wiring: According to the wiring diagram provided by Nanjing Zhuye Elevatorparts and the elevator manufacturer, connect the sensor’s signal wires (normally open/normally closed) to the corresponding terminals of the elevator control system. Ensure the wiring is tight and reliable, and the wire insulation layer is intact to avoid short circuits or poor contact. Clearly mark the wiring to facilitate future maintenance.
• After installation, conduct calibration and test run: Power on the elevator control system, operate the elevator to run up and down, and calibrate the sensor’s positioning accuracy at each floor. Adjust the sensor’s installation position if the leveling error exceeds the standard range. Test the sensor’s signal response: ensure that the sensor sends an accurate stop signal to the elevator control system when the car reaches the floor level, and the elevator stops smoothly without overshoot or undershoot.

2. Daily Operation & Routine Inspection

• During elevator operation, monitor the elevator’s leveling accuracy at each floor. If the elevator stops with obvious deviation (exceeding 3mm), frequent overshoot/undershoot, or the door opening delay occurs, it may indicate a sensor failure or signal abnormality.
• Carry out weekly visual inspections: Check the appearance of HDYG-1A and SEK-YG1A (a.b) for damage, such as cracks or deformation of the metal shell, looseness of bolts, and damage or aging of the wiring. Clean the sensor’s induction surface and the matching magnetic strip with a dry, lint-free cloth to remove dust and debris, avoiding the use of magnetic cleaners that may interfere with induction performance.
• Regularly check the wiring connections and signal stability. Use a multimeter to detect the sensor’s signal output (if necessary) to ensure it is normal when the elevator is leveling. If the signal is unstable or missing, check for loose wiring, poor contact, or damage to the sensor.

3. Regular Maintenance

• Every 3 months, thoroughly inspect the sensor’s installation position and gap with the magnetic strip. Adjust immediately if there is deviation due to elevator vibration or structural deformation.
• Every 6 months, conduct a comprehensive cleaning of the sensor and the magnetic strip. For sensors installed in harsh environments (high humidity, high dust), increase the cleaning frequency. Avoid using water, alcohol, or corrosive cleaners that may damage the sensor’s shell and internal components.
• Annually, conduct a professional performance test: Use precision instruments to detect the sensor’s positioning accuracy, magnetic induction sensitivity, and signal response time. If the performance indicators do not meet the requirements, contact Nanjing Zhuye Elevatorparts for professional maintenance or component replacement. Nanjing Zhuye provides original matching components to ensure consistent safety performance.

Recommended Replacement Cycle of Elevator Magnetic Switch Leveling Sensor HDYG-1A & SEK-YG1A (a.b)

1. Standard Replacement Cycle

2. Scenario-Based Cycle Adjustment

• Harsh Operating Environments: For elevators operating in high-humidity coastal regions, high-dust construction sites, high-temperature unventilated machine rooms, or areas with strong electromagnetic interference, the replacement cycle should be shortened to 3–4 years. Harsh conditions accelerate the aging of internal electronic components, corrosion of the shell, and degradation of magnetic induction performance, reducing the sensor’s reliability.
• Low-Frequency Use Scenarios: For elevators with low usage frequency (e.g., villa elevators, small office buildings with less than 3,000 monthly operations), the replacement cycle can be appropriately extended to 6–8 years after a professional inspection by Nanjing Zhuye Elevatorparts confirms that the sensor’s positioning accuracy, signal stability, and structural integrity are intact.

3. Immediate Replacement Conditions

• The sensor’s metal shell is severely cracked, deformed, or corroded, losing its protective function and affecting normal operation.
• The elevator has frequent leveling errors (exceeding 5mm) that cannot be eliminated by calibration, and the fault is confirmed to be caused by sensor failure.
• The sensor’s signal output is unstable, missing, or delayed, leading to elevator door opening failure, delayed door opening, or incorrect stop position.
• The sensor fails the annual performance test, and the performance indicators cannot be restored to the standard range after maintenance.