Elevator Permanent Magnet Sensor HDYG-1A & YG-1: Precision Sensing for Elevator Safety Operation

Proper Usage Methods of Elevator Permanent Magnet Sensor HDYG-1A & YG-1

1. Installation & Calibration

• First, cut off the elevator power supply and ensure safety. Thoroughly clean the installation position (on the elevator car frame, guide rail bracket, or door machine beam) 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 position must be calibrated according to the elevator’s functional requirements: for leveling sensors, the induction surface should be aligned with the magnetic strip on the guide rail, with a horizontal gap of 3–5mm (standard range); for door zone sensors, ensure alignment with the door zone magnetic component. 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 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. Use shielded wires for signal transmission to reduce electromagnetic interference. Ensure wiring is tight and the insulation layer is intact; pay special attention to the positive and negative poles (if applicable) to avoid short circuits or signal failure.
• Post-installation calibration and test run: Restore the elevator power supply, operate the elevator in inspection mode, and calibrate the sensor’s sensing range and signal trigger point. For HDYG-1A/YG-1 used for leveling, verify that the elevator stops accurately at each floor (leveling error ≤2mm); for door zone detection, confirm that the elevator door can only open/close within the door zone. If there is abnormal positioning or signal delay, recheck the installation position and gap, and adjust in time.

2. Daily Operation & Routine Inspection

• During elevator operation, monitor the elevator’s working status related to the sensor. Abnormal phenomena such as inaccurate leveling, door opening/closing failure outside the door zone, or frequent safety protection triggers may indicate sensor signal abnormalities or failures.
• Conduct weekly visual inspections: After cutting off the power supply, check the appearance of HDYG-1A/YG-1 for damage, including cracks or deformation of the metal shell, looseness of bolts and wiring terminals, and damage or aging of wires. Retighten loose fasteners in a timely manner, clean the sensor’s induction surface and matching magnetic components with a dry, lint-free cloth, and replace damaged wiring if necessary.
• Regularly check the sensor’s signal stability through the elevator control system’s diagnostic function. If there are frequent signal loss, false triggers, or delayed responses, trace the cause—such as loose wiring, poor contact, or magnetic interference—and resolve it immediately.

3. Regular Maintenance

• Every 3 months, thoroughly inspect the sensor’s installation position and gap with the magnetic component. 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 matching magnetic strip. For sensors installed in harsh environments (high humidity, high dust, strong electromagnetic interference), 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 sensing distance, signal response time, and anti-interference ability. If the performance indicators do not meet the standard requirements, contact Nanjing Zhuye Elevatorparts for professional maintenance or replacement with original sensors to ensure consistent safety performance of the elevator system.

Recommended Replacement Cycle of Elevator Permanent Magnet Sensor HDYG-1A & YG-1

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 permanent magnet materials, corrosion of the shell, and degradation of 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) and stable operating environments, the replacement cycle can be appropriately extended to 6–8 years after a professional inspection by Nanjing Zhuye Elevatorparts confirms that the sensor’s sensing performance, 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 sensor has no signal output, frequent false triggers, or delayed response, leading to elevator leveling error exceeding 5mm, door opening/closing failure, or safety protection malfunction that cannot be resolved by maintenance.
• The sensor’s sensing distance deviates significantly from the standard range, and the error cannot be corrected by calibration.
• The sensor fails the annual performance test, and the performance indicators cannot be restored to the standard range even after maintenance.