Description

1. Part-number breakdown ABA21700AG3 = base detector, 24 VDC, 9600 bps RS-485, 0–15 mm belt width, IP54, –25 °C…+70 °C
   AG8 = AG3 + 0–25 mm width, built-in 0.5 A self-resetting fuse
   AG9 = AG8 + 2 kV isolation, hot-swap connector
   AG10 = AG9 + cloud-connect TLS 1.3, 1 MB log
   AG11 = AG10 + AI crack prediction, 95 % accuracy
   AG12 = AG11 + hot-swap fan header, MTBF 100 kh @ 25 °C
   All variants: 24 VDC ±10 %, 0.8 A peak, 0.2 A standby, 50 000 h LED life
2. Safety first—lock-out & verify Detector sits on 24 VDC logic but is mounted on the moving belt. Lock the main disconnect, engage the car-top inspection switch and wait 60 s for the rail to fall below 5 V. Keep the new NYE detector in its anti-static bag until mounting—ESD can damage the magnetic sensor array.
3. Mechanical mounting—keep it centred Housing: 120 × 80 × 45 mm, mass 0.28 kg.
   Mount on belt guard using 4 × M6 screws, torque 10 N·m.
   Maintain 2 mm nominal gap between sensor face and belt surface; every 0.5 mm of misalignment reduces signal amplitude 10 %. NYE supplies a free adjustable bracket (NY-BRACKET-AGx) and 2 mm spacer (NY-SPAC-AGx) for quick alignment.
4. Connection map (print and stick inside guard) 24 V & 0 V: 2.5 mm², 105 °C silicone, torque 0.8 N·m
   RS-485 A/B: twisted pair, 120 Ω termination at last node (DIP-1 ON)
   Sync pulse: 3.3 V TTL, <1 m to controller
   Earth: 4 mm² green/yellow to guard PE; shield at controller end only
5. Power-up & baseline scan Apply 24 VDC; green “RUN” LED blinks 1 Hz during scan, steady when belt is clean.
   Raw signal amplitude must be >800 mV pp; <600 mV indicates gap too large or belt heavily magnetised—re-align or demagnetise.
   If red “FLT” LED latches, sensor array is shorted—replace detector.
6. AI crack prediction (AG11/12) On-board neural network analyses magnetic signature in real time.
   Alarm threshold: 95 % confidence, 0.5 s latency.
   False-positive rate: <1 % on validated Otis belts.
   If prediction drifts >5 % after 30 days, re-train with NYE Cal Tool (free).
7. Temperature & lifetime model LED emitter: 50 kh @ 25 °C, halves every 10 °C rise.
   Hall sensor array: 100 kh @ 25 °C, no wear mechanism.
   Capacitor C1 (47 µF, 35 V): 2 000 h @ 105 °C, 64 kh @ 45 °C.
   Translate to building traffic: Light traffic (residence, 300 trips/day) – LED ≈ 25 years, full detector ≈ 20 years; inspect every 3 years. Medium traffic (office, 600 trips/day) – LED ≈ 12 years, full detector ≈ 10 years; inspect every 2 years. Heavy traffic (mall/metro, 1 200 trips/day) – LED ≈ 6 years, full detector ≈ 5 years; inspect every 12 months.
8. Preventive inspection checklist Monthly: visual RUN LED, listen for relay click during scan. Quarterly: measure raw signal amplitude; <600 mV schedules re-alignment. Annually: megger sensor to PE >100 MΩ; <10 MΩ indicates moisture ingress. Bi-annually: torque test M6 screws; vibration loosens them, causing gap drift.
9. Rapid swap (downtime < 5 min) a) Place car at mid-floor, lock-out, tag out.
   b) Photograph wire numbers with phone.
   c) Remove 4 screws, slide old detector out.
   d) Insert new NYE ABA21700AGx, torque 10 N·m, set gap 2 mm.
   e) Restore cables, power up, run baseline scan.
   f) Log serial number and signal amplitude; return old unit for recycling.
10. Recycling & sustainability Nanjing Zhuye offers prepaid UPS labels inside every carton.
    Returned detectors are stripped: aluminium housing remelted, copper coil recycled, sensor array processed for gallium. One recycled AGx saves 0.9 kg CO₂—enough to power the same belt monitor for a month.