GE Grid Solutions
D20/D200 Technical Overview
GE Information
PRPI-019-3.00-10
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2.4.7.5 D20A Options
The following D20A termination board options are currently available:
Table 11 D20A Options
GE Part Number
Description
511-0101
WESDAC D20A (20-60 VDC) standard.
511-0103
WESDAC D20AHV2 (40-150 VDC) high-voltage.
517-0163
D20A 32 channel termination board with compression blocks.
517-0178
D20AD 32 channel termination board with DB25 connectors.
517-0216
D20AX 32 channel termination board with separable compression blocks.
517-0328
D20AB 32 channel termination board with barrier strips.
517-0240
D20AZ 32 channel, high voltage termination board with compression blocks.
517-0364
D20AZ 32 channel, high voltage termination board with separable compression blocks.
2.4.8 D20K Control Output Peripheral
Figure 34 D20K Control Output Peripheral
The D20K is a 32-point control output interface module. The 32 output drivers can be arranged
in several hardware/software configurations, depending on the system requirements. The D20K
ensures secure operation of the control output interface. All control actions requested by the
D20/D200 are initiated, timed, reset and validated by the D20K.
The D20K logic module plugs directly into a D20K termination panel, which is equipped with
field terminations. The D20K termination panel consists of 32 momentary control relays plus
two Master Trip and Close relays. The Master Trip and Close relay contacts are wired in series
with the point-select relay contacts controlling the output power for each point.
The D20K also provides a Local/Remote switch and control output fusing. The Local/Remote
switch is a manually operated switch used to disable D20K relay coil power during maintenance.
An off-line indication is passed to the D20 main processor, which is available as a pseudo status
to the host.
