Description

1. Part-number breakdown HBA26800AR1 = base version, 32 outputs, 2 A per channel, high-side switch, 24 VDC common
   AR3 = AR1 + reinforced 4 kV isolation, built-in 0.5 A self-resetting fuse, hot-swap fan header, MTBF 85 kh @ 25 °C
   Both share 180 × 120 mm footprint, IP20, –10 °C…+60 °C, 0.35 kg
2. Safety first—lock-out & verify Outputs switch 24 VDC up to 2 A but share the cabinet with 110 VDC brake circuits. Lock the main disconnect, hang a lock-out tag and wait 60 s for the rail to fall below 5 V. Keep the new NYE board in its anti-static bag until mounting—CMOS drivers can latch at 15 V static.
3. Mechanical mounting—keep it cool Snap onto 35 mm DIN rail inside the controller. Maintain 50 mm clearance above and below; every 10 °C rise halves MOSFET life. If cabinet is <120 mm deep, mount vertically with terminals down—this allows convection chimney. NYE supplies a free DIN clip (NY-DIN-HBA26) and 10 mm thermal pad (NY-PAD-HBA26) for shallow enclosures.
4. Wiring map (print and stick inside door) 24 V & 0 V: 2.5 mm², 105 °C silicone, torque 0.8 N·m
   Outputs: 32 × 2 A, 1 mm², torque 0.5 N·m, common anode
   Status RS-485: A/B, 120 Ω termination at last board (DIP-1 ON)
   Fan header: 12 V 0.2 A, locked-rotor alarm
   Earth: 4 mm² green/yellow to cabinet PE; logic leakage <1 mA
5. Power-up & output test Apply 24 VDC; green “PWR” LED steady, red “FLT” off.
   Short each output to 0 V; corresponding LED must illuminate within 50 ms and current must read 2 A ±0.1 A. If LED is dim or current <1.8 A, MOSFET is aged—replace board immediately.
6. Over-current & thermal protection Built-in 0.5 A self-resetting fuse (AR3) or 2 A poly-fuse (AR1).
   Temperature sensor: >85 °C reduces current to 50 %, >95 °C shuts down outputs.
   If red “FLT” latches, wait 60 s for cool-down; if it does not reset, replace board.
7. Temperature & lifetime model MOSFET RDS(on): 8 mΩ, 100 °C max junction, 10 kh @ 75 °C case.
   Capacitor C1 (100 µF, 35 V): 2 000 h @ 105 °C, 64 kh @ 45 °C.
   Translate to building traffic: Light traffic (office, 8 h/day) – MOSFET ≈ 12 years, cap ≈ 15 years, full board ≈ 10 years; inspect every 3 years. Medium traffic (mall, 12 h/day) – MOSFET ≈ 6 years, cap ≈ 8 years, full board ≈ 6 years; inspect every 2 years. Heavy traffic (metro, 20 h/day) – MOSFET ≈ 3 years, cap ≈ 4 years, full board ≈ 3 years; inspect every 6 months.
8. Remote monitoring (optional) RS-485 registers:
   0x00 = output status (32-bit)
   0x01 = temperature (°C)
   0x02 = cycle counter
   0x03 = over-current events
   Poll every 30 s; cycle counter >1 million or temperature >85 °C schedules replacement.
9. Preventive inspection checklist Monthly: visual LED for all outputs, listen for fan rattle. Quarterly: measure 24 VDC ripple; >200 mV pp indicates supply fatigue. Annually: megger outputs to PE >100 MΩ; <10 MΩ indicates moisture ingress. Bi-annually: torque test 24 V screws; vibration loosens them, causing intermittent “E-DRIVER”.
10. Rapid swap (downtime < 3 min) a) Power down, lock-out, wait 60 s.
    b) Photograph wire numbers with phone.
    c) Remove DIN clip, slide old board out.
    d) Insert new NYE HBA26800AR1/3, snap onto rail.
    e) Restore wires in exact order, set DIP switches as photo.
    f) Power up, run output test.
    g) Log serial number and cycle counter; return old unit for recycling.
11. Recycling & sustainability Nanjing Zhuye offers prepaid DHL labels inside every carton.
    Returned boards are stripped: gold fingers go to certified refinery, plastic housing re-granulated, MOSFET silver recovered.
    One recycled HBA26800AR1/3 saves 1.2 kg CO₂—enough to power the same controller for a week.