Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 8)

Chapter 1
Product Description
1–2
In order to synchronize two three phase systems without high instantaneous
energy transfer, the voltage, frequency, and phase displacement of the two
systems must be matched. Kilowatt Load Sharing can be implemented by
matching the ratio of power system load to system capacity to the ratio of
actual alternator power to rated alternator power. The LSM provides the
following information to allow the user’s system to achieve the necessary
control actions.
•
Voltage Match Error (in steps of 0.05 percent)
•
Frequency Match Error, or slip (in steps of 0.01 Hz)
•
Synchronizing Bus to Reference Bus Phase Match Error (in steps of 1
degree)
•
Load Sharing Error (scalar quantity between 0.000 and
 1.000)
•
Synchronization Status
— Frequency Within Limits
— Voltage Within Limits
— Phase Within Limits
— Synchronization Mode Conflict Failure
— Phase Rotation Mismatch Failure (3 phase synchronization mode only)
— No Reference Bus Voltage Present Failure
— No Synchronizing Bus Voltage Present Failure
— Reference Bus Over Voltage Failure
— Synchronizing Bus Over Voltage Failure
Synchronization and
Load Share Errors