GE D20ME 526-2005-216943 is an industrial grade processor module launched by GE Power Systems (now GE Grid Solutions). It is the core component of the D20/D200 series of remote terminal units (RTUs) and is mainly used in power system automation, industrial control, and process monitoring scenarios.
Description
Hardware Architecture
Processor: Equipped with a 32-bit Freescale MC68030 microprocessor, with a main frequency of 40 MHz, supporting 4 GB of external memory addressing (via VME bus interface).
2 HDLC communication ports (for communication with D20 I/O peripherals)
7 programmable RS-232 asynchronous ports (supporting SCADA master station and IED device connections)
1 RS-232 maintenance port (9600 baud rate)
Bus interface: VME bus main controller, supporting multi node expansion (such as D200 system).
Real time clock: accuracy ± 2 ppm, supports 1 ms resolution, used for event timestamps.
Working temperature: -40 ° C to+85 ° C
Protection level: Industrial grade anti-interference design, in compliance with EMC directive.
Size: 3U VME standard size (approximately 13.3cm x 7.08cm x 3.93cm)
Weight: Approximately 1.2 kg
Power supply:+5V DC (D20 power module supports 4 D20MEs running simultaneously).
Single node D20 system: Connect I/O modules (such as analog input/output cards) and communication expansion cards through the VME bus.
Multi node D200 system: supports distributed control and achieves master-slave processor collaboration through VME bus.
Scalability
Memory expansion: Global memory can be increased through the D20EME module, supporting the operation of complex algorithms.
Communication Expansion: Paired with Media Interface Card (MIC) to achieve Ethernet connection, supporting protocols such as Modbus and DNP3.
Jumper and configuration
JP8 jumper: Control hardware watchdog enable/disable, battery backup NV memory function.
Boot mode selection: Start from Flash or external VME device through jumper settings.
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