Description
OTIS DO2000 black door controller GGA GFA GDA24350BD11 Brief Introduction
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Product Name
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OTIS DO2000 black door controller |
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Model
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GGA GFA GDA24350BD11
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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OTIS DO2000 Door Controller GDA24350BD11 – The Digital Brain That Turns Every Door Movement into a Whisper-Quiet Symphony
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Every smooth door opening you experience—whether on a 2 m/s high-rise or a quiet hospital lift—is orchestrated by a green box no larger than a hardback book: the DO2000 Door Controller, part number GDA24350BD11. This third-generation digital drive regulates torque, position and speed of permanent-magnet door motors in real time, while regenerating braking energy back into the 24 V bus. Nanjing Zhuye Elevator Parts keeps factory-sealed BD11 units in anti-static stock for next-day despatch. Below we explain what the controller does, how to commission it in under 20 minutes, and the replacement cycle that prevents expensive “door trouble” call-backs.
1. What GDA24350BD11 Really Is
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Power: 24 VDC ±10 %, 40 A peak, 15 A continuous
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Motor: 3-phase PM synchronous, 0.5–1.5 kW, encoder 1,024 ppr
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Control: 32-bit DSP, torque loop 62.5 µs, position loop 1 ms
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Interfaces: CAN-open 125 kbit/s (Otis MC2/MC3) + 0–10 V speed reference
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Protection: IP20 PCB, over-current, over-temp, encoder fault, brake fault
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Regeneration: 4-quadrant IGBT feeds braking energy back to 24 V bus — saves 15 % power
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Size: 220 × 120 × 75 mm — DIN-rail or chassis mount
If the controller faults, the door stops, the car goes out of service, and the CPU logs “EF3 Door Drive Fault”.
2. Where It Is Used
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Otis Gen2®, Gen2-Life®, SkyRise® 1.0–4.0 m s⁻¹
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Thyssen TCM-MC2 → MC3 retrofits
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KONE EcoDisc™ modernisation with Otis protocol
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Chinese MRL controllers with 24 VDC door bus
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Suitable for centre-opening or side-opening doors 800–1,400 mm clear width
3. Commissioning – 20-Minute Plug-and-Play
Safety: place lift on inspection, lock main breaker, tag out, prop door to 50 %.
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Remove old drive — undo 4 DIN-rail clips; unplug 8-way Molex.
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Mount BD11 — snap onto rail until latches click; earth strap to PE.
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Connect plugs:
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J1: 24 VDC (red/black)
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J2: motor U/V/W (shielded)
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J3: encoder A/B/Z + 5 V
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J4: CAN H/L + shield
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J5: brake resistor B+/B- (4 Ω, 200 W)
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Apply 24 V — green LED blinks 1 Hz while loading parameters, then steady.
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Auto-tune: press and hold TUNE for 3 s; door runs one open/close cycle, stores stator resistance and encoder offset.
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Run 5 cycles — verify current <8 A, torque ripple <5 %, stop accuracy ±1 mm.
No laptop is required; firmware is pre-flashed to match Otis checksum 0x9C7E.
4. Daily Operation – What the Controller Actually Does
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Updates torque every 62.5 µs; stop jerk <0.5 m/s³ — passengers feel nothing
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Auto-compensates for door mass; learns rubber ageing every 24 h
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Built-in 24 h self-test — if encoder drift >0.5 mm, “Door Learn Fault” is logged
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Regenerative braking feeds 15 % of door energy back to 24 V bus — saves battery life
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Temperature sensor derates current above 70 °C — no summer shutdowns
5. Replacement Cycle & Preventive Maintenance
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High-traffic metro (>1,500 cycles day⁻¹) – blow dust every 3 months, replace controller every 6 years
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Shopping mall (600–1,000 cycles day⁻¹) – inspect annually, replace every 10 years
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Low-rise office (≤400 cycles day⁻¹) – inspect every 18 months, replace every 12 years
Replace immediately if:
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Green LED stays red (internal 5 V rail fault)
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CAN “EF3 Door Drive” logged ≥3 times in 30 days
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Encoder count error >4 pulses per revolution
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Brake resistor temperature >120 °C with normal duty
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EEPROM error 0xE2 after power dip (parameter corrupt)
6. Extending Life – 3 Pro Tips
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Keep 24 VDC ±5 %; spikes above 30 V destroy the on-board buck converter
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Torque motor lugs annually; loose connections cause arcing and ozone
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Clean encoder disk monthly; brake dust creates false counts
7. Why Buy GDA24350BD11 from Nanjing Zhuye Elevator Parts?
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Factory-new, not refurbished; passes 4-hour burn-in at 60 °C and 2,000-cycle door test
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Firmware pre-flashed; matches Otis original checksum, no teach-in required
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Anti-static foam box + silica gel — safe for air freight
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Dual stock: 380 pcs Nanjing, 120 pcs Dubai — next-day delivery to 65 countries
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Bundle kit: controller + 4 Ω brake resistor + 3 m encoder cable — 8 % discount
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24 months warranty against drift or communication failure
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7×24 WhatsApp/WeChat video support; average response 10 minutes
