1.24
SEL-2032 Communications Processor Instruction Manual Date Code 20120126
Introduction and Specifications
Functions
Port Directory
The WHO command provides you with a list of all of the ports, the type of
relay or device connected to each port, the current communication parameters,
and a port ID string that describes the device or application. The device type
and port ID string are entered automatically during the auto-configuration
process when the connected device is an SEL relay.
Multilevel Password Security
Passwords are required to gain access to the various communication levels of
the SEL-2032. Access Level 1 allows interrogation of settings and data only.
Entry into Access Level 2 is required to change settings.
Synchronizing
Time Source
You can synchronize the attached devices to an external time source or to the
SEL-2032 built-in battery-backed clock. An example of this application is
shown in Figure 1.11.
Figure 1.11 SEL-2032 Distributes Time Synchronization
Using IRIG-B Over Star Data and Control Network Connections
Accepts External IRIG-B Input
The SEL-2032 accepts a modulated or demodulated IRIG-B signal through a
rear-panel BNC connector. A setting, available with SET G, selects between
modulated and demodulated IRIG-B operation. An internal database element
asserts when the SEL-2032 receives an IRIG-B signal.
Accepts External Protocol Input
You can also perform low-accuracy time synchronization of the SEL-2032
using a serial protocol or an installed protocol card. See the protocol card
instruction manual for details.
Generates IRIG-B Internally
If no external IRIG-B signal is applied, the SEL-2032 internal clock/calendar
generates an IRIG-B signal. The SEL-2032 includes an internal battery-
backed clock/calendar that maintains correct time with or without external
SEL-2032
GPS Clock
Satellite
IRIG-B
Time Synchronization
IRIG-B
Time Synchronization,
Data Collection, Control,
and Engineering Connections
IED IED IED IED
Courtesy of NationalSwitchgear.com
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