Basler DECS-250, Instruction Manual

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148 9440300990 Rev J
BESTlogic™ Plus DECS-250
Name Description Symbol
GENERATOR
BREAKER This element is used to connect the breaker
open and close output signals from the DECS-
250 to physical output contacts to open and
close the generator breaker, and map breaker
status feedback to a contact input. In addition,
contact inputs can be mapped to allow
switches to be implemented to manually
initiate breaker open and close requests.
(Available when the controller is equipped with
the optional Auto synchronizer, style number
xxxxAxx)
GENERATOR BREAKER Inputs
Status: This input allows a contact input to
be mapped that will provide breaker status
feedback to the DECS-250. When the
contact input is closed, the breaker is
indicated to be closed. When the contact
input is open, the breaker is indicated to be
open.
Open: This input allows a contact input to be
mapped that can be used to initiate a
manual breaker open request. When this
input is pulsed closed, the breaker opens.
Close: This input allows a contact input to be
mapped that can be used to initiate a
manual breaker close request. When this
input is pulsed and the generator is stable, a
close request is initiated. If the Dead Bus
Close Enable parameter is TRUE, and the
bus is dead, the breaker will close. If the bus
is stable, the DECS-250 will synchronize the
generator to the bus, and then close the
breaker.
GENERATOR BREAKER Outputs
The outputs must be mapped to the contact outputs of the DECS-
250 that will be used to drive the breaker.
Open: This output is pulsed TRUE (closes the output contact it is
mapped to) when the DECS-250 is providing a signal to the
breaker to open. It will be a pulse if the Breaker Output Contact
Type is set to Pulse on the Breaker Hardware screen under
Synchronizer/Voltage Matching in the Settings Explorer, and the
length is determined by the Open Pulse Time. It will be a constant
output if the Generator Breaker Hardware Contact Type is set to
continuous. Note the pulse time must be set long enough for the
breaker to actually open before the pulse is removed.
Close: This output is pulsed TRUE (closes the output contact it is
mapped to) when the DECS-250 is providing a signal to the
breaker to close. It will be a pulse if the Breaker Output Contact
Type is set to Pulse on the Breaker Hardware screen under
Synchronizer/Voltage Matching in the Settings Explorer, and the
length is determined by the Open Pulse Time. It will be a constant
output if the Generator Breaker Hardware Contact Type is set to
continuous. Note the pulse time must be set long enough for the
breaker to actually open before the pulse is removed.
GOVERNOR Can be connected to inputs of other logic
blocks. When the Governor is being raised,
the Raise output is true. When being lowered,
the Lower output is true. (Available when the
controller is equipped with the optional Auto
synchronizer, style number xxxxAxx)
INTERNAL
TRACKING
DISABLE When true, this element disables internal
tracking.
LINE DROP
DISABLE When true, this element disables line drop
when the unit is operating in AVR mode.