Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 35)

A–B
4 Chapter
4–1
Application Information
Modes of Operation
The Line Synchronization Module (LSM) has several modes of operation.
Upon successful configuration, or on power up with a previously configured
module, the LSM will be in one of the following modes:
•
Monitor Only
•
Monitor with Load Share
•
Synchronization and Monitor
•
Synchronization and Monitor with Load Share
The state of the discrete outputs from the PLC–5 to the LSM controls the
mode of operation of the LSM. This relationship is shown in Table 4.1.
Table 4.1
LSM Mo s o
Discrete Outputs From The PLC–5 to LSM
LSM Modes of
Operation
Initiate
Synchronization
Load Share
Disable
Isochronous/Droop
Mode
0 1 0 or 1
Monitor Only
0 0 0
Monitor with Load Share 0 0 1
Synchronization and
1 1 0 or 1
Synchronization and
Monitor
1 0 0
Synchronization and
Monitor with Load Share
1 0 1
Monitor Only
In this mode of operation, data is returned for Synchronizing Bus voltage,
current, and power values, and Reference Bus voltage values. All error
values and discrete inputs to the PLC–5 will be set to zero.
Monitor with Load Share
In this mode of operation, data is returned for Synchronizing Bus voltage,
current, and power values, and Reference Bus voltage values. The error
values and discrete inputs to the PLC–5 for load share are modified, while all
synchronization errors and discrete inputs to the PLC–5 remain set to zero.
Synchronization and Monitor
In this mode of operation, data is returned for Synchronizing Bus voltage,
current, and power values, and Reference Bus voltage values. The error
values and discrete inputs to the PLC–5 for synchronization are modified
while the load share errors and discrete inputs to the PLC–5 remain set to
zero.
Overview