OTIS Parts
Elevator main processor board MCS220 Otis ID.No.GGA21240D1 PCB LCB II version D1 LIMITED CAR BOARD
| Size | Weight |
| 220 MMM*240 MM*30 MM | 0.44 kg |
The Otis Elevator LCB II (Limited Car Board II) motherboard, specifically the LCB2 GGA21240D1 version, is a pivotal control component within the Otis MCS-LCBII (Modular Car Control System-LCBII) elevator system. This advanced board is a product developed by Otis at its European Technology Center in Germany, with a heritage that can be traced back to the widely used TOEC-3 elevators in China. Over time, the LB board of the TOEC-3 elevators evolved through the LBII board (utilized in CHVF elevators) to the current LCB II.
The LCB II board combines the functionalities of the OCSS (Otis Car Signal Control System) and LMCSS (Local Machine Control Sub-System) into a single, streamlined control board for the elevator car. It utilizes an INTEL 8088 microprocessor for central processing and integrates power support, input/output interfaces, RSL (Remote Station Link) interfaces, and motor protection mechanisms.
Specific to the GGA21240D1 variant, this motherboard is engineered to meet the demands of modern elevator systems. Detailed parameters include software version GAA 30082 BAC, running on PCB versions GCA 21240 D1-D3 and GDA 21240 D1-D3. Configuration options such as TOP, LOBBY, and BOTTOM positions are selectable within ranges tailored to the elevator's specific needs, for instance, TOP position values range from 1 (BOTTOM +1) to 15.
The RSL connections must be correctly implemented with terminal connectors and serial cables not exceeding the design maximum length of 150 meters, with a terminal resistor requirement of 75 ohms/0.22 microfarads for serial communication lines.
In summary, the Otis LCB II GGA21240D1 motherboard represents a sophisticated and versatile control solution for Otis elevators, incorporating state-of-the-art technology and adhering to European design standards, widely compatible with Chinese elevator standards. Its integration of critical control functionalities and robust design ensures efficient and reliable elevator operation.