Description
ThyssenKrupp Elevator MM Control BoardMM990111 Brief Introduction
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Product Name
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ThyssenKrupp Elevator MM Control Board |
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Model
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MM990111
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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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ThyssenKrupp MM Control Board MM990111 – The Nerve Centre of Your Elevator Group | Nanjing Zhuye Elevator Parts
Hidden inside every ThyssenKrupp MM (Modular Machine) controller, the MM990111 board is the neural hub that turns button presses into perfectly timed motion. Built on a 32-bit safety CPU and flashed with the latest group-control algorithms, it juggles car calls, landing calls, encoder feedback, VVVF drive commands and safety chains while chatting to the door operator and the building management system over CAN-FD. When it trips, the whole group can freeze and passengers start tweeting. Nanjing Zhuye Elevator Parts keeps genuine MM990111 assemblies in anti-static packaging, flashed with the latest firmware and ready for same-day despatch—helping you restore full intelligence without costly OEM delays.
Product snapshot
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ThyssenKrupp part number MM990111, hardware rev. F2, firmware bundle MM-20.9
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Dual ARM Cortex-A53 + M4 safety core, 800 MHz, SIL-3 cross-check, 1 GB DDR4
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96 digital inputs (24 V DC) for calls, limits, locks, safety gear, rope elongation
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64 digital outputs (24 V / 2 A) for indicators, latches, brake, light-barrier, gong
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12 analogue inputs 0-10 V / 4-20 mA for load cell, current, temperature, position
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4 encoder ports: incremental 5 V / 12 V and absolute EnDat 2.2, 250 kHz max
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3 CAN-FD, 2 RS-485, 1 Ethernet 100/1000 for group, VVVF, BMS, remote monitor
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RTC with 10-year battery, 8 GB eMMC log, encrypted firmware update via USB-C
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Operating temperature −10 °C to +70 °C, conformal-coated both sides, UL 94-V0
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IP20 aluminium heatsink, 300 × 220 × 45 mm, 0.98 kg, plug-in header, hot-swap compatible
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CE, UL, RoHS, REACH and ThyssenKrupp QES 2024 approved
Where it works
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ThyssenKrupp MM, MM-MO, MM-MRL elevators up to 3 m/s and 1 350 kg
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Group installations up to 8 cars with MODBUS/OPC-UA building interface
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Modernisation packages replacing obsolete MM990110 or third-party CPUs
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Any controller expecting SIL-3 integrity, ±1 mm levelling and real-time group intelligence
Installation method – 15-minute field swap
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Place lift on inspection mode; stop at mid-shaft; switch OFF main breaker; lock & tag.
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Wait 5 min for DC bus to discharge; verify zero energy on a calibrated meter.
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Photograph existing wiring; note CAN-FD and encoder plug orientation.
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Release two side latches; slide old MM990111 out of DIN rail.
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Insert new board until latches click—no tools required.
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Re-connect 24 V supply, all I/O cables, encoders, CAN-FD, Ethernet.
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Insert supplied SD card with job-specific parameters; power up; green “SYS” LED illuminates in 3 s.
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Launch ThyssenKrupp MM Tool (TMMT-20) on laptop; auto-load verifies checksum and uploads parameters in 120 s.
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Run full inspection cycle: calls, brake, door, levelling, group communication; verify no fault codes.
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Remove SD card; seal tamper sticker; log serial number and firmware v20.9 in maintenance book.
Replacement cycle & preventive maintenance
Although solid-state, main boards live in a harsh world—vibration, voltage spikes, summer heat. ThyssenKrupp bulletin SB-MM-2024-03 recommends:
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Visual inspection every 6 months: clean dust from fan guard, check for burnt I/O terminals.
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Functional test every 12 months: measure contact resistance of safety-chain inputs < 50 mΩ.
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Replace entire board every 12 years or 40 000 operating hours, whichever comes first.
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Immediate replacement if:
– “CPU FAULT” LED red with car stopped,
– encoder inputs show “position deviation” after cable swap,
– RTC battery < 2.4 V (clock resets on power loss),
– Ethernet/CAN-FD communication lost (blue LED dark).
Pro tip: 70 % of premature failures are traced to loose 24 V terminals—re-torque to 0.8 Nm every year.
Maintenance tips from Nanjing Zhuye Elevator Parts
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Always use shielded encoder cables, foil facing inward, grounded at board only, to prevent noise faults.
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Never hot-plug I/O while the lift is running; transients can weld relay contacts.
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Keep a spare MM990111 in every service room; at 0.98 kg it fits in a laptop bag and saves a night call.
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After lightning storm, check 24 V ripple < 1 V; high ripple overheats the DC-DC converter.
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Order the “MM Bundle” (board + SD card + torque tool) from Nanjing Zhuye Elevator Parts to eliminate parts hunting and ensure matched components.
Why buy from Nanjing Zhuye Elevator Parts?
We are a ThyssenKrupp-authorised distributor, importing MM990111 directly from the German factory, pre-loading firmware MM-20.9 and testing every unit on a 128 I/O simulator for 60 min under full load. Boards are shipped in anti-static foam with a 24-month replacement warranty. Our 3 000 m² Nanjing warehouse holds 200+ units year-round; orders placed before 15:00 China time leave the same evening via DHL Express, arriving Europe or North America in 2–4 days. Bulk pricing starts at three pieces; we can pre-load site-specific parameters and include a loaner board to keep your lifts intelligent during the swap.
Conclusion
The ThyssenKrupp MM Control Board MM990111 is the silent brain that turns steel and copper into a smooth, safe ride. By installing the genuine unit, following the torque schedule and replacing it before capacitors age, you eliminate mysterious stops, group faults and costly passenger complaints. Stock genuine MM990111 from Nanjing Zhuye Elevator Parts today—because when the brain stops, the whole building stops.
