GE Grid Solutions
D20/D200 Technical Overview
GE Information
PRPI-019-3.00-10
17
1.6.1.2 D200 Chassis
Power Switch / Fuse Panel
D20EME Ethernet Memory
Expansion Module
Media Interface Card
(MIC)
Modem Slots (seven if MIC
installed, eight otherwise)
D20ME or D20ME II
Main Processors
(up to seven)
Up to four Power Supplies
10.
5 i
n
19 in.
14 i
n.
Figure 10 D200 Perspective Drawing
The D200 chassis is a nine-slot VME chassis that can support up to:
•
Seven D20 processor cards
•
Four D.20 ports supporting up to 124 peripherals without repeaters and 480 I/O peripherals
with repeaters
•
49 RS-232 or RS-485 ports (seven per main processor)
•
Two Ethernet ports
1.6.2 Main Processor
The design of the D20 main processor has evolved with improvements in processor performance
and electronic packaging technology. Previous versions of the D20 main processor (D20M,
D20M+ and D20M++), although no longer available, are still operating at many locations. The
current versions of the D20 main processor (D20ME and D20ME II) are described below. For a
detailed description of the main processors, see section 2.2,
Compatibility of the different versions of the D20/D200 main processors and chassis is listed in
E.
