GE D90 Plus Instruction Manual page 386
Line distance protection system
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Also See for D90 Plus:
- Instruction manual (688 pages) ,
- Communications manual (222 pages) ,
- Instruction manual (602 pages)
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CONTROL ELEMENTS
376
Set To Preset
Range: any FlexLogic™ operand or shared operand
Default: OFF
This setting selects an operand used to set the count to the preset value and functions
as follows.
–
The counter will be set to the preset value when the counter is enabled and the
operand assigned to the
counter is enabled and the operand assigned to the
the counter will be set to 0.
–
The counter will be set to the preset value when the counter is running and
operand assigned to the
operand assigned to the
counter is running, there is no effect on the count.
–
The counter will be set to the preset value when a reset or reset/freeze command
is sent to the counter and the operand assigned to the
logic 1. When a reset or reset/freeze command is sent to the counter and the
operand assigned to the
0.
Reset
Range: any FlexLogic™ operand or shared operand
Default: OFF
This setting selects an operand for setting the count to either 0 or the preset value
depending on the state of the operand assigned to the
Freeze/Reset
Range: any FlexLogic™ operand or shared operand
Default: OFF
This setting selects an operand for capturing (freezing) the accumulated count value into
a separate register with the date and time of the operation, and resetting the count to 0.
Freeze/Count
Range: any FlexLogic™ operand or shared operand
Default: OFF
This setting selects an operand for capturing (freezing) the accumulated count value into
a separate register with the date and time of the operation, and continuing counting.
The present accumulated value and captured frozen value with the associated date and
time stamp are available as actual values. If control power is interrupted, the
accumulated and frozen values are saved into non-volatile memory during the power
down operation.
The digital counter logic is shown below. The logic is identical for all digital counters.
setting is asserted (logic 1). When the
Set To Preset
Set To Preset
setting changes the state from 0 to 1. If the
setting changes from 1 to 0 while the
Set To Preset
setting is logic 0, the counter will be set to
Set To Preset
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 7: PROTECTION
value is logic 0,
Set To Preset
setting is
Set To Preset
setting.
Set To Preset
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