Basler Electric BE1-11g - Manual (Page 168)

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Figure 97. Synchronizer Element Logic Block
Table 59. Logic Inputs and Outputs
Name
Logic
Function
Purpose
Block Input Disables the 25A function when true. A pulse will stop and reset the 25A
function. Also, resets the element after a sync fail.
Initiate Input A pulse true initiates the synchronization process. It does not have to be
maintained to continue synchronization. If it is maintained and a sync fail
occurs, the element will not be blocked, but continue with a new sync
cycle.
Status Output True when the synchronization criteria is met.
Close
Breaker
Output Signals the breaker to close. True after the Status output becomes true.
Volt Monitor Output True when the voltage monitor settings are met.
Lower
Frequency
Output True when the 25A element is decreasing frequency.
Raise
Frequency
Output True when the 25A element is raising frequency.
Lower
Voltage
Output True when the 25A element is decreasing voltage.
Raise
Voltage
Output True when the 25A element is increasing voltage.
Sync In
Progress
Output True when the 25A has been initiated, and is not inhibited. The 25A is
inhibited when the generator or bus voltage is less than 10 V or 15 Hz.
Sync Fail Output A one-cycle pulse, true when the breaker is still open after maximum
close attempts.
Volt Synced Output True when the voltage magnitude between sources is less than or equal
to the Voltage Difference setting. If the Voltage Source > Voltage
Destination setting is enabled, the generator voltage must be at least
0.5% greater than the bus voltage.
Synchronizer (25A) BE1-11g