Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 7)

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Product Description
After reading this chapter, you should be able to identify the product features
and system applications.
The Bulletin 1402, Line Synchronization Module (LSM), is designed to meet
the needs of manufacturers, system integrators, and users of 3 phase
alternators and cogeneration systems or for applications that require two
three–phase systems to be synchronized with each other. The module
provides means for automatic synchronization, load sharing, and high speed
power system monitoring.
The Line Synchronization Module (LSM) is a two slot 1771 form factor
module that fits into a standard Allen–Bradley 1771 I/O chassis. It performs
three functions:
1. Measures appropriate parameters from the two three–phase systems and
provides control and error signals to implement engine governor control
for synchronization.
2. Provides an analog output that is representative of the ratio of the power
being supplied by the alternator to the output rating of the alternator,
reads an analog input that represents the ratio of the total system load
being supplied to the total system capacity, and provides an error signal to
adjust the alternator for proper load sharing based on the instantaneous
load requirements.
3. Performs as a multi–function digital power monitor for the system.
These functions provide data and control signals which are communicated to
the PLC-5

via the 1771 backplane.
Chapter Objectives
Introduction
General Description