Elevator Leveling Sensor SGD31-GG-TZ2B2P: Precise Positioning Core from Nanjing Zhuye Elevatorparts

Step-by-Step Usage Guide for Elevator Leveling Sensor SGD31-GG-TZ2B2P

1. Professional Selection & Pre-Installation Preparation

PositionGuidanceSignalFunctionFunctionSignalSignalFunctionFunctionFunctionFunction2. Correct Installation & Precision Adjustment

• Sensor Fixing: Take the Elevator Leveling Sensor SGD31-GG-TZ2B2P from Nanjing Zhuye Elevatorparts, align it with the preset mounting holes on the car top (ensure the sensing surface is perpendicular to the leveling plate on the shaft), and fix it with stainless steel screws (torque: 1.5–2.5N·m). Use a level ruler to confirm the sensor is installed horizontally without tilt—tilt will cause positioning deviation.
• Wiring Connection: According to the recorded wiring position and Nanjing Zhuye Elevatorparts’ wiring manual, connect the power line, signal line, and ground line of the SGD31-GG-TZ2B2P sensor to the corresponding interfaces of the elevator controller. Clearly distinguish between positive and negative poles of the power supply and signal lines to avoid short circuits or signal failure. Tighten the wiring terminals firmly and use cable ties to organize the wire harness, avoiding contact with moving parts.
• Position Calibration: Restore the secondary power supply, switch the elevator to inspection mode, and adjust the sensor’s height and horizontal position: When the car is at the standard leveling position, the sensor should accurately detect the leveling plate and output a stable signal (confirmed via multimeter or controller display). Fine-tune the sensor’s position to ensure the leveling error is within ≤ 3mm. Test the sensor’s response speed by moving the car up and down slightly—ensure the signal switches quickly without delay.

3. Post-Installation Testing & Daily Maintenance

• Comprehensive Function Testing: Restore the elevator’s main power supply, operate the elevator to run up and down between all floors, testing the SGD31-GG-TZ2B2P sensor function: Confirm the car stops precisely at each landing (no obvious height difference), the door system opens normally, and there is no abnormal sound during leveling. Use the elevator controller’s self-diagnosis function to check for sensor signal faults.
• Daily Inspection: Maintenance personnel should check the sensor during daily car top and shaft patrols: Observe the sensor shell for damage, deformation, or loose mounting screws; check the wiring terminals for looseness, oxidation, or disconnection; clean the sensing surface and leveling plate with a dry cloth to remove dust and debris (avoid using corrosive cleaning agents).
• Regular Maintenance: Every 3 months, use a multimeter to test the sensor’s signal output stability and power supply voltage. Every 6 months, recheck the sensor’s mounting position and calibration accuracy—adjust if there is any deviation. For elevators in high-dust, high-humidity, or strong-interference environments, shorten the maintenance interval to 1 month and enhance dust-proof and anti-interference protection.

Recommended Replacement Cycle for Elevator Leveling Sensor SGD31-GG-TZ2B2P

1. Standard Replacement Cycle

2. Adjustments for Special Scenarios

• Harsh Environments & High Frequency: For elevators in harsh environments (e.g., coastal areas with high salt spray, industrial sites with strong dust/electromagnetic interference) or high-frequency operation (e.g., large shopping malls, airports with daily operation time ≥ 20 hours), the replacement cycle is shortened to 1.5–2.5 years. Harsh environments accelerate component corrosion and aging, while high-frequency use increases the load on internal circuits.
• Stable Environments & Low Frequency: 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 to5–7 years—only after Nanjing Zhuye Elevatorparts’ technicians inspect and confirm that the sensor’s signal accuracy, response speed, and insulation performance meet factory standards.

3. Immediate Replacement Conditions

• The sensor’s leveling error exceeds 5mm, leading to the elevator stopping unevenly (obvious height difference with the landing) and difficulty in opening/closing doors.
• The sensor signal drifts or is unstable (manifested as intermittent leveling failure, frequent elevator restarting during leveling), and calibration cannot restore normal performance.
• The sensor has no signal output (confirmed via multimeter), causing the elevator to fail to recognize the landing position and unable to stop normally.
• The sensor shell is severely damaged, cracked, or corroded, and the internal circuit is exposed—losing basic protection and sensing functions, and posing potential short-circuit hazards.