Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 24)

Chapter 3
General Operation
3–2
Voltage Mode
This entry is used to indicate if the system being monitored is wired in a
WYE, a Delta, or an open Delta. A value of “1” will indicate a WYE
system, a value of “2” will indicate a three transformer Delta system, and
a value of “4” will indicate a two transformer Open Delta system.
Line–to–Neutral values will be provided only when a WYE is configured.
PT Primary Rating
This entry is used to indicate the primary voltage rating of the user
supplied potential transformers. This information is used for scaling
purposes. The value of this parameter must be between 120 and 115,000.
Line and Neutral CT Primary Ratings
These entries are used to indicate the primary ampere rating of the user
supplied line and neutral current transformers. This information is used
for scaling purposes. The value of this parameter must be between 5 and
10,000.
Synchronization Method
This configuration entry is used to indicate which method of
synchronization is to be implemented. A value of “0” indicates the
delayed acceptance window method.
!
ATTENTION: The following acceptance limit values must be
set to fit the customer applications.
Voltage Match Error Upper and Lower Acceptance Limits
These entries are used to specify the upper and lower acceptance limits
for matching Synchronizing Bus voltage to the Reference Bus voltage.
The value is specified in steps of 0.05% and must be between 0.00 and
25.00 percent.
Frequency Match Error Upper and Lower Acceptance Limits
These entries are used to specify the upper and lower acceptance limits
for matching Synchronizing Bus frequency to the Reference Bus
frequency. The value is specified in steps of 0.01 Hz and must be between
0.00 and
1.00.
Operational Characteristics
Continued