Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 31)

Chapter 3
General Operation
3–9
Self–test Continued
The red Fault LED flashes while the complete self–test is being performed.
The Fault LED will remain on continuously if the self–test fails. The Fault
LED will turn off if the self–test is successfully completed.
The green Run LED is illuminated during the self–test and then turned off
after the test is completed. The Run LED also flashes each time a block
transfer is executed.
Update Rate
•
Synchronizing Bus Error Parameters: 100 milliseconds
•
Monitoring Parameters: 200 milliseconds (Synchronization Inactive) 1
second (Synchronization Active)
•
Diagnostic Parameters: 1 second
Accuracy
The accuracy of the measurements and calculations made by the LSM are
directly affected by the quality of the user supplied current and voltage
transformers. Accuracy is affected by both the amplitude and phase errors
introduced by the user supplied transformers. It is recommended that these
transformers be Instrument Accuracy, Class 1 or better. The following
accuracy values are relative to the signals that are present at the input
terminals of the LSM.
•
Current Measurement = + /– 0.2 % of Full Scale
(Full Scale = 1.4
 CT Primary)
•
Voltage Measurement = + /– 0.2 % of Full Scale
(Full Scale = 1.25
 PT Primary)
•
Frequency Measurement = + /– 0.05 Hz
(within the 47 to 63 Hz range)
•
Slip Frequency = + /– 0.05 Hz
(within the 47 to 63 Hz range)
•
Power, Power Factor, VA + /– 0.4 % of Full Scale Power Consumption
(Full Scale = 1.75
 CT Primary  PT Primary)
The LSM exchanges data with the PLC backplane via both discrete I/O and
block transfers. Due to the physical size of the module’s internal
components, the LSM requires two slots in the I/O chassis. However,
addressing assignments are made to the lower numbered slot of the two slots
used.
Discrete I/O Interface
The LSM accepts six discrete outputs from the PLC–5, and provides twelve
discrete inputs to the PLC–5. See Appendix B, “Block Transfer Tables and
Discrete I/O Definition”, for additional information.
Operational Characteristics
Continued
PLC Interface