D20/D200
Installation and Operations Guide
GE Energy
994-0078-2.00-7 General
54
Full
Connections and Configuration, continued
WESTERM
D20M++:
Power Supply
Power Supply connections on the WESTERM D20M++:
• 1 & 2 are used for input power connections based upon the WESDAC D20
Power Supply
Peripherals:
Supplying
Power
Power supply to the WESDAC/WESTERM peripheral pairings is through the
WESTERM boards.
If you have the D20 horizontal slot chassis for a VME or non-VME installation, then
power supply to the I/O Peripherals can be run through the D.20 Link. This is also
possible for a D20 two-node implementation of this chassis assembly. If you have
the D200 vertical slot chassis for multi-node, then you cannot run the power supply
to the I/O Peripherals through the D.20 Link; you require the D.20 DC Interface
module: See “D.20 Interface Modules: connect for power using D.20 Link”, page 61
In RTU sy
stems using more that five peripherals, an external power supply is
required and this supply is wired directly onto the WESTERM board. Typical power
consumption for D20 I/O peripherals is as follows:
D20A 20 – 60 VDC, 8 W typical
D20C 20 – 60 VDC, 5 W typical
D20K 20 – 60 VDC, 4 W typical, 11 W
with all relays energized
D20S 20 – 60 VDC, 3 W typical
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