20 GE INFORMATION D20E ETHERNET I/O MODULE INSTRUCTION MANUAL
CHAPTER 1: BEFORE YOU START
Hardware overview
The D20E Ethernet I/O Modules are distributed network input/output modules for
substation automation that support:
• 64 digital inputs
• 32 control outputs
• 32 analog inputs or
• A mix of 8 control outputs, 16 analog inputs, 16 digital inputs.
Two redundant switched LAN connections are provided using either the DNP3 TCP/IP or
the IEC
61850 server protocols.
The D20E modules are highly reliable, incorporating state-of-the-art technology. They are
comprised of a logic board subassembly and interface board subassembly housed on a
mounting panel with an integral top cover (see
Figure 5). Field connections are facilitated
by compression type termination blocks.
Figure 5: D20E module sub-assemblies
Input/output configurations are factory set for digital inputs, control outputs and analog
inputs. Digital inputs on the D20E-S or D20E-C modules are configured for either of the
following nominal input types:
• LVDI (low voltage digital input), or
• HVDI (high voltage digital input).
Control outputs on the D20E-K or D20E-C modules are configured to one of the following:
•Trip/Close
•Form C contacts
• DPST outputs
•Raise/Lower
Analog inputs accept DC sensor or transducer signals and can be set for either voltage or
current inputs on an individual per input basis.
A REMOTE/LOCAL switch is provided on both the D20E-K and D20E-C modules to enable or
disable control outputs for added station maintenance safety.
Display Cover
Logic Board
Subassembly
Interface
Board
Subassembly
Terminal Blocks Metal Mounting Plate
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