Description
Otis elevator SPBC Panel GAA/GBA26800KB1/NB1/2/3 GCA26800KX1 Brief Introduction
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Product Name
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Otis elevator SPBC Panel |
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Model
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GAA/GBA26800KB1 GAA/GBA26800NB1/2/3 GCA26800KX1
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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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Elevator SPBC Board GBA26800KB1 – The Silent Guardian Behind Every Smooth Ride
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Every time you press a floor button, watch the position indicator scroll, or hear the doors announce “going up,” you are really talking to a 160 mm square green PCB hidden inside the car top box—the SPBC (Serial Position & Button Controller). Otis part number GBA26800KB1 is one of the most widely-deployed SPBC boards in Gen2®, Gen2-Life and SkyRise® systems built after 2014. Nanjing Zhuye Elevator Parts keeps factory-fresh GBA26800KB1 units in anti-static stock for same-day despatch. Below we explain what the board does, how to install it in under ten minutes, and the replacement cycle that prevents expensive “car-top communication fault” callbacks.
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What GBA26800KB1 Really Does Mounted on DIN rail inside the C.O.P. top box, the board:
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Reads every car-button press through a 64-way ribbon cable
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Drives the 7-segment or dot-matrix position indicator via 12 VDC serial bus
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Sends door-open, door-close and inspection signals to the LCB2 / GECB through CAN-bus at 125 kbit s⁻¹
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Provides 24 VDC / 5 VDC power to the alarm, buzzer and overload cell
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Stores floor parameters, door timing and learn data in 512 K EEPROM—so the car still knows where it is after a power dip
In short, if GBA26800KB1 fails, the cab goes dark, the doors refuse to move, and the controller logs “EF5 Car-top Com Lost”.
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Where It Is Used
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Gen2® PM gearless machines 1.0–2.5 m s⁻¹
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Gen2-Life machine-room-less up to 30 floors
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SkyRise® high-rise with OX-2 drive (board runs identical firmware)
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Simplex or group (≤8 cars) with OCSS version 3.2 or later
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Installation – 10-Minute Hot Swap Safety first: place controller on INSTALL, lock main breaker, wait 30 s for DC bus to discharge.
Step 1 – Open car top box; photograph existing wiring for back-up. Step 2 – Undo four M4 screws holding the plastic carrier; slide GBA26800KB1 out of DIN rail guides. Step 3 – Disconnect (in order) 64-way ribbon, 6-way Molex CAN, 4-way 24 VDC supply and 2-way 5 VDC buzzer. Step 4 – Inspect ribbon for cracked insulation; if any conductor shows copper, replace ribbon (Nanjing Zhuye part WR-64-300). Step 5 – Insert new GBA26800KB1 until latches click; reconnect all plugs—they are keyed, so forced insertion means wrong plug. Step 6 – Power up; green D1 LED blinks 2 Hz for 3 s, then solid—board has joined CAN network. Step 7 – Run one full learn trip from top to bottom; verify position indicator counts every floor. No laptop download is required; firmware and parameters are already flashed at the factory to match Otis checksum 0x9C7E.
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Daily Operation – What the Board Actually Does
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Scans 64 buttons every 25 ms; debounce time 40 ms—passenger cannot create a double call
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Auto-detects if a LED segment is shorted; sends “Segment Fault” but keeps the rest working
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Provides 3.3 V logic pull-down for inspection box; so technicians can run the car even if 24 V supply dips to 18 V
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Temperature sensor on PCB derates CAN speed above 70 °C—no summer nuisance faults
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Replacement Cycle & Preventive Maintenance
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High-traffic office (>1,000 starts day⁻¹) – vacuum dust every 6 months, replace SPBC every 5 years
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Residential tower (300–600 starts day⁻¹) – inspect annually, replace every 8 years
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Low-rise freight (≤200 starts day⁻¹) – inspect every 18 months, replace every 10 years
Replace immediately if:
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D1 LED stays red for >5 s (internal 5 V rail failure)
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CAN “EF5” logged ≥3 times in 30 days
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Position indicator skips floors or shows “––”
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Ribbon connector burnt (usually shorted LED segment)
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EEPROM error code 0xF0 after power dip (checksum corrupt)
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Extending Life – 3 Pro Tips
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Keep 24 VDC supply ±3 %; spikes above 30 V destroy the on-board buck converter
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Close car top box properly; condensate from AC blower is the #1 killer of edge connectors
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Tie ribbon cable away from traction sheave; oil + dust creates a conductive film that shorts LED lines
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Why Buy GBA26800KB1 from Nanjing Zhuye Elevator Parts?
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Factory-new, not refurbished; board passes ICT, burn-in 4 h at 60 °C, and final functional test
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Firmware 3.12 flashed; matches Otis original checksum, no teach-in required
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Anti-static aluminum bag + foam box—safe for air freight
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Dual stock: 420 pcs Nanjing, 150 pcs Dubai—next-day delivery to 65 countries
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Warranty: 24 months replacement, no waiting for factory RMA
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Tech support: 7×24 WhatsApp/WeChat video call if fault codes persist
Conclusion The GBA26800KB1 SPBC board is the invisible brain that turns button presses into smooth rides. A single communication fault can park a car for hours. Keep a spare GBA26800KB1 from Nanjing Zhuye on every service truck, swap it on schedule, and replace “car-top com lost” panic with a five-minute planned fix—one silent, reliable ride at a time.
