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GEK – 106166B
2.6 INPUTS AND OUTPUTS
2.6.1 DIGITAL INPUTS
The DFF1000 has 14 digital inputs (two groups of 7 Inputs each with a common terminal for each), being all of
them user-configurable through GE-INTRO software
program. Models DFF1001 and DFF1002 have only 7 inputs.
Every input may have one of the following values:
- Input non-active
- External Trigger ( Pulse )
- Table 0 selection ( Level )
- Table 1 selection ( Level )
- Frequency trips block ( Level)
- Voltage trips block ( Level )
- Complete protection trips block ( Level )
The external connections diagrams,
in figures 1, 2, and 3, show
the default inputs configuration.
2.6.2 OUTPUTS
The DFF1000 provides 33 Outputs, five of them are not configurable (four of them are assigned to the protection
functions and one of them is for the internal alarm). The rest of the available outputs, 28, are configurable through
GE-INTRO software.
Models DFF1001 and DFF1002 provide 25 (20 configurable, 5 fixed) and 13 (8 configurable,
5 fixed) outputs each.
The technical characteristics of the outputs are described in chapter 5.
The configurable outputs may be programmed through a logic based on the internal states of the relay (pickups,
trips, alarms, etc.). The DFF has 132 different internal states, all of them can be combined through NOT, AND and
OR logic gates providing huge flexibility.
The programmable logic is done at different levels. At the first level AND gates (of up to 16 inputs previously
grouped, see 2.2.3) can be done. The output of this AND gate is incorporated to a state bit, that can be also
incorporated to another AND gate of, again, up to 16 Inputs. This "star-connection" process can be repeated until
finishing the 16 bits of the predefined status for this function.
Once finished the AND gates configuration process a second level can be implemented using OR gates of also up
to 16 Inputs. In this case the inputs are limited to the previously created bytes groups.
In the external connection drawings (Figures 1,
2, and 3)
the default output configurations are shown.
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