Description
OTIS RS14 Communication Board Brief Introduction
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Elevator address board RS14 DAA26800AL1
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Product Name
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Elevator PCB Board
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Model
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RS14 DAA26800AL1
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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 RS14 Communication Board DAA26800AL1 – The 14-Port Data Hub That Keeps Every Lift Talking
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Passengers see buttons light and arrows scroll, but the real conversation happens on a postcard-sized green PCB—the RS14 communication board. Otis part number DAA26800AL1 acts as a 14-port serial hub, bridging the car-top controller, COP, LOP, inverter and remote monitoring unit through one unified CAN-bus. Nanjing Zhuye Elevator Parts keeps factory-sealed AL1 boards in anti-static stock for same-day despatch. Below we explain what the board does, how to install it in under eight minutes, and the replacement cycle that prevents expensive “com lost” call-backs.
1. What DAA26800AL1 Really Does
Mounted on DIN-rail inside the LMCB cabinet, the RS14 board:
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Converts parallel button presses into 125 kbit/s CAN frames
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Drives floor indicators, arrows and gongs through a 40-pin flat cable
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Supplies 5 VDC / 12 VDC rails for hall lanterns and buzzers
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Provides two isolated RS-485 ports for building BMS or remote modem
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Stores fault log and cycle count in 512 K FRAM—retains data for 20 years without battery
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Monitors network health; auto-switches to “limp mode” if two nodes fail
If AL1 fails, the cab goes dark, the doors refuse to move, and the controller logs “EF6 RS14 Timeout”.
2. Compatible Systems
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Otis Gen2®-R2, Gen2-Life® 1.0–2.5 m s⁻¹
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SkyRise® MRL up to 45 floors
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Thyssen TCM-MC2 retrofit kits
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Chinese OEM controllers with CAN-open protocol
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Simplex or group (≤8 cars)
3. Installation – 8-Minute Hot Swap
Safety: place controller on INSTALL, lock main breaker, wait 60 s for DC bus to discharge.
Step 1 – Open controller door; photograph existing wiring.
Step 2 – Undo four M3 screws holding the plastic carrier; slide AL1 out of DIN rail guides.
Step 3 – Disconnect (in order) 40-way ribbon, 6-way CAN, 4-way 12 VDC supply and 2-way RS-485.
Step 4 – Inspect ribbon for bent pins; if any conductor shows copper, replace cable (Nanjing Zhuye part CB-40-300).
Step 5 – Insert new AL1 until latches click; reconnect all keyed plugs.
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; verify floor indicator counts every floor.
Step 2 – Undo four M3 screws holding the plastic carrier; slide AL1 out of DIN rail guides.
Step 3 – Disconnect (in order) 40-way ribbon, 6-way CAN, 4-way 12 VDC supply and 2-way RS-485.
Step 4 – Inspect ribbon for bent pins; if any conductor shows copper, replace cable (Nanjing Zhuye part CB-40-300).
Step 5 – Insert new AL1 until latches click; reconnect all keyed plugs.
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; verify floor indicator counts every floor.
No laptop or download is required; firmware is pre-flashed to match Otis checksum 0x6B2A.
4. Daily Operation – What the Board Actually Does
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Updates floor display every 50 ms; no ghosting or skipping
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Auto-dims LEDs to 30 % after 22:00 (energy code compliant)
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Built-in terminating resistor (120 Ω) jumper-selectable — no external resistor needed
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Temperature sensor on PCB derates CAN speed above 70 °C — no summer nuisance faults
5. Replacement Cycle & Preventive Maintenance
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High-traffic office (>1,000 starts day⁻¹) – vacuum dust every 6 months, replace board every 6 years
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Residential tower (300–600 starts day⁻¹) – inspect annually, replace every 10 years
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Low-rise freight (≤200 starts day⁻¹) – inspect every 18 months, replace every 12 years
Replace immediately if:
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D1 LED stays red for >5 s (internal 5 V rail fault)
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CAN “EF6” logged ≥3 times in 30 days
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Floor indicator skips or shows “––”
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Ribbon connector burnt (usually shorted LED segment)
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FRAM checksum error 0xF0 after power dip (data corrupt)
6. Extending Life – 3 Pro Tips
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Keep 12 VDC supply ±5 %; spikes above 16 V kill the on-board buck converter
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Close controller door properly; dust on edge connectors is the #1 killer
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Tie ribbon cable away from brake resistor; oil + dust creates a conductive film that shorts LED lines
7. Why Buy DAA26800AL1 from Nanjing Zhuye Elevator Parts?
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Factory-new, not refurbished; board passes ICT, 4-hour burn-in at 60 °C, and final functional test
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Firmware pre-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: 380 pcs Nanjing, 120 pcs Dubai — next-day delivery to 65 countries
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Warranty: 24 months replacement, no factory RMA wait
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Tech support: 7×24 WhatsApp/WeChat video call if fault codes persist
Conclusion
The DAA26800AL1 RS14 communication board is the invisible post-office that keeps every node talking. A single CAN fault can park a car for hours. Keep a spare AL1 from Nanjing Zhuye on every service truck, swap it on schedule, and replace “com lost” panic with a five-minute planned fix — one quiet, reliable conversation at a time.
