In-stock MCSS processor boards, MCSS I/O boards, RCB relay boards, relay sub-boards, and MagneTek drive control boards for Otis Controller 411 traction elevator systems. Sales and repair from Hackensack, NJ.
All boards tested and verified. Call or email for current availability and pricing.
Rev Date 95-03-21, S/N 5879527
Controller 411 Main Logic Board
Large green PCB Controller 411 main logic board. Features transformer, orange capacitor, yellow DIP ICs, RS4 connector, speaker and chassis connect headers, and test message buttons. Core logic board for Otis Controller 411 traction elevator systems.
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Rev Date 96-07-24
Relay / Timer Sub-Board
Small green PCB relay and timer sub-board. Features Omron MY4 24VDC relay (S1), blue capacitor, LED1 status indicator, and TB1/TB2 terminal blocks with NO/NC contacts. Used as a relay and timer sub-assembly in Otis Controller 411 traction elevator systems.
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OTIS 2001, GO 102 SB
RCB-III Relay Controller Board
Large green PCB RCB-III relay controller board. Features Altera MAX FPGA, extensive IC arrays, edge connectors P2–P8, RS422 default jumper, and COPY SOCKET RCB-1. Used in Otis Controller 411 and related traction elevator systems.
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OTIS 2001, Ring Car Board II
RCB-II Ring Car Board
Large green PCB RCB-II Ring Car Board. Features large FPGA/processor Z16, BAT1 backup battery, COPY SOCKET RCB-1, DB9 serial port P1, and connectors P2–P9. Handles ring car communications and control in Otis Controller 411 traction elevator systems.
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© OTIS 9708 BM
Serial / Display Controller Board
Medium green PCB serial and display controller board. Features SN74LS373N ICs, DB25 parallel connector, 7-segment LED display, red and blue push buttons, and ribbon cable connector. Used for serial communications and display control in Otis traction elevator systems.
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Rev 00-07-21
Relay / Logic Board (Through-Wave)
Long green PCB relay and logic board with through-wave soldering. Features P1–P34 connectors along both edges, red toroidal inductor, large heatsink, and CD4098BE monostable IC. Used for relay switching and logic control in Otis traction elevator systems.
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MCSS-PROCESSOR BOARD, Rev Date 11/26/10
MCSS Processor Board
Large green PCB MCSS Processor Board. Features Diagnostics Port J8, multiple SIO ports, and COPR 1998 OTIS AAA30045AAJ1 ICs. Central processing board for Otis MCSS traction elevator controllers.
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MCSS-PROCESSOR BOARD, Rev Date 05-05-18
MCSS Processor Board (Later Revision)
Large green PCB MCSS Processor Board later revision. Features COPR 1998 OTIS AAA30046AAJ1 ICs, Diagnostics Port, and multiple SIO ports. Updated revision of the MCSS processor for Otis traction elevator control systems.
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MCSS-I/O BOARD, Otis Elevator Co. 1992, RB-95A102
MCSS I/O Board (1992 Revision)
Large green PCB MCSS I/O Board 1992 revision. Features Grayhill 70M-OAC5 solid state relay modules, J3 power connector, and extensive I/O signal labeling. Mid-generation MCSS I/O board for Otis traction elevator control systems.
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MCSS-I/O BOARD, Rev Date 2007-06-30
MCSS I/O Board (2007 Revision)
Large green PCB MCSS I/O Board 2007 revision. Features Grayhill 70M-OAC5 solid state relay modules, green terminal blocks, and extensive I/O signal labeling. Provides field I/O interface for Otis MCSS traction elevator control systems.
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MCSS-I/O BOARD, Otis Elevator Co. 1989, Date 1989-01-04
MCSS I/O Board (1989 Early Revision)
Large green PCB early 1989 revision MCSS I/O Board. Features fuse holders, blue capacitors, Grayhill-style I/O modules, and green terminal blocks. One of the earliest MCSS I/O boards produced for Otis traction elevator systems.
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MagneTek © 1997, 975A2340-0009
MagneTek Duty Plug Board
Large green PCB MagneTek Duty Plug board. Features yellow capacitors, MagneTek 975A2340-0009 ICs, parallel port connector, and dense resistor arrays. Used in MagneTek drive systems for Otis Controller 411 traction elevators.
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MagneTek, KMN3437, ATE 0114
MagneTek DBSS Control Board
Large green PCB MagneTek DBSS Control board REV 4. Features FOX crystal oscillator, AD IC, and extensive LED fault indicators including PV Power, MG Fault, Low Line, Overload, Safety Chain, CPU Fault, Ready to Run, and 2nd Brake Switch. Green terminal blocks for field wiring.
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MagneTek, AD569JN 9724
MagneTek Drive Control Board
Large green PCB MagneTek drive control board. Features AD569JN DAC IC, fault LED indicators (Up-Fwd, Down-Rev, Safety Chain, CPU Fault, Fault Enable), and dense resistor and IC arrays. Drive control board for MagneTek elevator drive systems.
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MagneTek, 17CONN, 975A1346-0007
MagneTek Drive Main Board with Duty Plug
Large green PCB MagneTek drive main board with integrated Duty Plug sub-board attached at lower-left. Features 975A1346-0007 ICs, 17CONN connector, and dense resistor and IC arrays. Complete drive main board assembly for MagneTek elevator drive systems.
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thyssenkrupp Elevator
thyssenkrupp TAC20 Main Controller Board
Large modern green PCB thyssenkrupp TAC20 main controller board. Features red and orange terminal blocks, gray edge connectors, large blue capacitor, and thyssenkrupp logo. Central control board for thyssenkrupp TAC20 traction elevator systems.
Inquire about this boardThe Otis Controller Type 411 is one of the most widely deployed traction elevator control systems in North America. Introduced in the 1980s and refined through the 1990s and 2000s, the 411 platform uses the MCSS (Modular Control and Safety System) architecture with dedicated processor and I/O boards.
Key boards include the MCSS Processor Board (ABA26800 series), MCSS I/O Board (ACA3800 / AAA00619 series), and the RCB-III relay controller (GA21270A). These boards span revisions from 1989 through 2018, reflecting the platform's long service life.
MagneTek supplied the drive systems used with many Otis Controller 411 installations. The DBSS Control board and Duty Plug board (ARU3296) are commonly needed replacement parts for MagneTek DC drive systems paired with the 411 controller.
Gemini Elevator Service stocks, sells, and repairs Controller 411 boards and MagneTek drive boards. Our 40 years of experience means we can identify the right board for your system quickly. All units carry a 1-year warranty.
Call us or send an inquiry with your ASSY number and we'll confirm availability and pricing same day.
