Elevator Weighing Magnet EK-HDJD: Core Weight Detection Component from Nanjing Zhuye Elevatorparts

Step-by-Step Usage Guide for Elevator Weighing Magnet EK-HDJD

1. Professional Selection & Pre-Installation Preparation

FastenDetection2. Correct Installation & Protection Verification

• Magnet Fixing: Take the Elevator Weighing Magnet EK-HDJD from Nanjing Zhuye Elevatorparts, align it with the preset mounting holes on the weighing platform (ensure the magnetic surface faces the induction sensor correctly, with a gap of 2–5mm between the magnet and sensor—follow Nanjing Zhuye’s specifications). Fix the magnet with stainless steel screws (torque: 2–3N·m) to avoid loose installation affecting detection accuracy.
• Wiring Connection: According to the recorded wiring position and Nanjing Zhuye Elevatorparts’ wiring manual for EK-HDJD, connect the signal line and power line (if applicable) to the corresponding terminals of the elevator controller. Ensure correct polarity and firm wiring—incorrect wiring will cause signal loss or detection deviation. Use cable ties to organize the wire harness, avoiding contact with moving parts of the weighing platform.
• Accuracy Calibration: Restore the elevator’s power supply, switch to inspection mode, and perform zero calibration (unloaded car) and load calibration (place standard weights equivalent to 50%, 80%, 100%, and 110% of the rated load in the car). Follow the elevator controller’s calibration procedure to match the EK-HDJD’s output signal with the actual load. Confirm that the overload alarm is activated accurately when the load exceeds 110% of the rated load, and the elevator cannot start.

3. Post-Installation Testing & Daily Maintenance

• Comprehensive Function Testing: After calibration, perform multiple load tests (empty car, half load, full load, overload) to verify the EK-HDJD’s performance: Confirm the elevator controller displays the load weight accurately (error ≤ ±3%), the elevator starts normally under rated load, and stops immediately under overload. Test the weighing stability during elevator operation—ensure no abnormal weight fluctuations or false alarms.
• Daily Inspection: Maintenance personnel should check the EK-HDJD weighing magnet during daily shaft patrols: Observe the magnet’s mounting screws for looseness, the shell for damage or corrosion, and the wiring terminals for looseness or oxidation; use a multimeter to test the signal output (refer to Nanjing Zhuye’s standard signal range). Clean the magnet surface and surrounding area with a dry cloth to remove dust and debris (avoid using magnetic cleaners).
• Regular Maintenance: Every 3 months, recheck the gap between the EK-HDJD magnet and the induction sensor—adjust if there is any deviation. Every 6 months, perform re-calibration to ensure detection accuracy (especially after elevator maintenance or component replacement). For elevators in high-humidity, high-temperature, or strong-magnetic-interference environments, shorten the maintenance interval to 1 month and enhance the magnet’s waterproof and anti-interference protection.

Recommended Replacement Cycle for Elevator Weighing Magnet EK-HDJD

1. Standard Replacement Cycle

2. Adjustments for Special Scenarios

• High-Traffic & Harsh Environments: For elevators in high-traffic areas (e.g., large shopping malls, airports with frequent full-load/overload conditions) or harsh environments (e.g., coastal areas with high salt spray, industrial sites with strong magnetic interference), the replacement cycle is shortened to 1.5–2.5 years. Frequent mechanical vibration and load changes accelerate magnetic attenuation, while harsh environments cause rapid damage to the shell and internal circuits.
• Low-Frequency Use & Stable Environments: For elevators with low usage frequency (e.g., villa elevators, small office buildings with daily operation time < 8 hours) and stable shaft environments (constant temperature and humidity, little dust), the replacement cycle can be extended to 4–5 years—only after Nanjing Zhuye Elevatorparts’ technicians inspect and confirm that the magnet’s magnetic flux density, detection accuracy, and signal stability meet factory standards for EK-HDJD.

3. Immediate Replacement Conditions

• Detection accuracy exceeds the allowable error (＞±5%) and cannot be restored through calibration—manifested as incorrect load display or failure to activate the overload alarm.
• Professional testing confirms the magnet’s magnetic flux density is reduced by more than 20% compared to the factory standard, leading to weak signal output or signal loss.
• The magnet shell is severely damaged or corroded, and the internal structure is exposed—losing waterproof, dustproof, or anti-interference performance.
• The magnet fails repeatedly (e.g., frequent false alarms, no signal output) even after maintenance and calibration, affecting the normal operation of the elevator.