Date Code 20001006 Front-Panel Interface 11-7
SEL-351 Instruction Manual
Local Control
Use local control to enable/disable schemes, trip/close breakers, etc., via the front panel.
In more specific terms, local control asserts (sets to logical 1) or deasserts (sets to logical 0) what
are called local bits LB1 through LB8. These local bits are available as Relay Word bits and are
used in SELOGIC
®
Control Equations (see Row 25 in Table 9.4).
Local control can emulate the following switch types in Figure 11.5 through Figure 11.7.
Figure 11.5: Local Control Switch Configured as an ON/OFF Switch
Figure 11.6: Local Control Switch Configured as an OFF/MOMENTARY Switch
Figure 11.7: Local Control Switch Configured as an ON/OFF/MOMENTARY Switch
Local control switches are created by making corresponding switch position label settings.
These text label settings are set with the SET T command or viewed with the SHO T command
via the serial port [see Section 9: Setting the Relay and SHO Command (Show/View Settings)
in Section 10: Serial Port Communications and Commands]. See Local Control Switches in
Section 7: Inputs, Outputs, Timers, and Other Control Logic for more information on local
control.
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
