GE 845 Instruction Manual page 394

MONITORING
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PRE-SET
Range: -2147483648, 0, +2147483647
Default: 0
The setpoint sets the count to a required pre-set value before counting operations begin,
as in the case where a substitute relay is installed in place of an in-service relay, or while
the Counter is running.
COMPARE
Range: -2147483648, 0, +2147483647
Default: 0
The setpoint sets the value to which the accumulated count value is compared. Three
FlexLogic output operands are provided to indicate if the present value is 'more than (HI)',
'equal to (EQL)', or 'less than (LO)' the set value.
UP
Range: Off, Any operand from the list of FlexLogic operands
Default: Off
The setpoint selects the FlexLogic operand, digital input, virtual input or remote input for
incrementing the Counter. If an enabled UP input is received when the accumulated
value is at the limit of +2147483647, the counter rolls over to -2147483648 and shows
the alarm 'Digital Counter 1 at Limit'.
DOWN
Range: Off, Any operand from the list of FlexLogic operands
Default: Off
The setpoint selects the FlexLogic operand, digital input, virtual input or remote input for
decrementing the Counter. If an enabled DOWN input is received when the accumulated
value is at the limit of +2147483647, the counter rolls over to -2147483648 and shows
the alarm 'Digital Counter 1 at Limit'.
SET TO PRE-SET
Range: Off, Any operand from the list of FlexLogic operands
Default: Off
The setpoint selects the FlexLogic operand, digital input, virtual input or remote input
used to set the counter to the pre-set value. The counter is set at pre-set value in the
following situations:
1. When the Counter is enabled and Digital Counter 1 Set to Pre-Set operand has value 1
(when the Counter is enabled and Digital Counter 1 Set to Pre-Set operand has value
0, the Counter will be set to 0).
2. When the Counter is running and Digital Counter 1 Set to Pre-Set operand changes
the state from 0 to 1 (Digital Counter 1 Set to Pre-Set changing from 1 to 0 while the
Counter is running has no effect on the count).
3. When a reset or reset/freeze command is sent to the Counter and Digital Counter 1
Set to Pre-Set operand has the value 1 (when a reset or reset/freeze command is sent
to the Counter and Digital Counter 1 Set to Pre-Set operand has the value 0, the
Counter will be set to 0).
RESET
Range: Off, Any operand from the list of FlexLogic operands
Default: Off
The setpoint selects the FlexLogic operand, digital input, virtual input or remote input for
setting the count, either 0 or the pre-set value depending on the state of the Counter 1
Set to Pre-set operand.
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS