Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 23)

A–B
3 Chapter
3–1
General Operation
This chapter:
•
introduces the user to the controls and operation
•
describes each function
•
defines operating parameters
Functional
The LSM has six different modes of operation. These modes are described
below.
Configuration
Before the LSM can perform its intended functions, it must be configured by
the integrator/OEM or user. Configuration is accomplished by sending the
appropriate information to the module via the “Block Transfer Write”
mechanism. Configuration data is compared with acceptable values. The user
can obtain acknowledgment of the configuration data by using the “Block
Transfer Read” mechanism for access to the module’s response. If
out–of–range or illegal values were entered, an error indication that identifies
the illegal or out–of–range entries is returned. If the data is acceptable, an
acknowledgment indication is returned. The new configuration data is then
used to scale the monitoring data and to set up the synchronization and load
sharing functions.
Whenever new configuration data is sent to the LSM, all module functions
(synchronization, load–sharing, and monitoring) are terminated, and the
values for “Amps Demand”, “kVA Demand”, and “kW Demand” are cleared.
The values for “kW Hours” and “kVAR Hours” are maintained at the values
present before the new configuration data was sent. The new configuration
data is then evaluated. Upon acceptance of the new configuration data, the
module resumes normal operation.
A detailed description of the required configuration data follows. See “Block
Transfer Communications”, on Page 4–2 in the Application Information
chapter of this manual and Appendix B, “Block Transfer Tables and Discrete
I/O Definition”, for a detailed description of how the module performs block
transfers and how the associated data is organized.
Chapter Objectives
Operational Characteristics