88
9440300990 Rev J
Event Recorder
DECS-250
Level Triggers
Level triggering initiates a data log based on the value of an internal variable. The variable can be a
minimum or maximum value and can be specified to trigger a record when the monitored variable crosses
a minimum threshold from above, or a maximum threshold from below. A minimum and maximum
threshold may also be selected for the monitored variable, causing the monitored value to trigger a record
when it rises above its maximum threshold or decreases below its minimum threshold.
Level triggers are configured in BESTCOMS
Plus
on the Level Triggers tab (Figure 82) in the Data Log
area of the Report Configuration. The Level Triggers tab consists of a list of parameters that can be
selected to trigger a data log. Each parameter has a level trigger enable setting which configures
triggering of a data log when the parameter increases above the upper threshold setting or decreases
below the lower threshold setting. The parameters available to trigger a data log are listed below.
Figure 82. Data Log Level Triggers
•
Auxiliary voltage input
•
AVR output
•
AVR PID error signal input
•
Bus frequency
•
Bus voltage
•
Comp. frequency deviation
•
Control output
•
Cross current input
•
Droop
•
FCR error
•
FCR output
•
FCR state
•
Field current
•
Field voltage
•
Frequency response
•
FVR error
•
FVR output
•
FVR state
•
Generator apparent power
•
Generator average current
•
Generator average voltage
•
Generator current Ia
•
Generator current Ib
•
Generator current Ic
•
Generator frequency
•
Generator power factor
•
Generator reactive power
•
Generator real power
•
Generator voltage Vab
•
Generator voltage Vbc
•
Generator voltage Vca
•
Negative sequence current
•
Negative sequence voltage
•
Null balance level
•
OEL controller output
•
OEL ref.
•
OEL state
•
Internal State
•
Position Indication
•
Positive sequence current
•
Positive sequence voltage
•
PSS electrical power
•
PSS filtered mech. Power
•
PSS final output
•
PSS lead/lag #1
•
PSS lead/lag #2
•
PSS lead/lag #3
•
PSS lead/lag #4
•
PSS mechanical power
•
PSS mechanical power LP #1
•
PSS mechanical power LP #2
•
PSS mechanical power LP #3
•
PSS mechanical power LP #4
•
PSS post-limit output
Summary of Contents for DECS-250
Page 2: ......
Page 6: ...iv 9440300990 Rev J Revision History DECS 250 ...
Page 16: ...xiv 9440300990 Rev J Contents DECS 250 ...
Page 20: ...4 9440300990 Rev J Introduction DECS 250 ...
Page 28: ...12 9440300990 Rev J Power Stage DECS 250 ...
Page 32: ...16 9440300990 Rev J Voltage and Current Sensing DECS 250 ...
Page 40: ...24 9440300990 Rev J Synchronizer DECS 250 ...
Page 52: ...36 9440300990 Rev J Auxiliary Control DECS 250 ...
Page 56: ...40 9440300990 Rev J Contact Inputs and Outputs DECS 250 ...
Page 84: ...68 9440300990 Rev J Limiters DECS 250 ...
Page 114: ...98 9440300990 Rev J Power System Stabilizer DECS 250 Figure 96 PSS Parameter Settings ...
Page 124: ...108 9440300990 Rev J Stability Tuning DECS 250 ...
Page 126: ...110 9440300990 Rev J Mounting DECS 250 Figure 103 Overall and Projection Mounting Dimensions ...
Page 127: ...9440300990 Rev J 111 DECS 250 Mounting Figure 104 DECS 250 Escutcheon Plate Dimensions ...
Page 198: ...182 9440300990 Rev J Timekeeping DECS 250 ...
Page 210: ...194 9440300990 Rev J CAN Communication DECS 250 ...
Page 304: ...288 9440300990 Rev J Maintenance DECS 250 ...
Page 316: ...300 9440300990 Rev J Specifications DECS 250 ...
Page 334: ...318 9440300990 Rev J Analog Expansion Module DECS 250 ...
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