Schweitzer Engineering SEL-351P - Settings Change or Active Setting Group Change; Remote Control Switches

7-10 Inputs, Outputs, Timers, and Other Control Logic Date Code 990215
SEL-351P Manual Técnico
restored. This feature makes the local bit feature behave the same as a traditional installation
with panel mounted control switches. If power is lost to the panel, the front-panel control switch
positions remain unchanged.
Settings Change or Active Setting Group Change
If settings are changed (for the active setting group or one of the other setting groups) or the
active setting group is changed, the states of the local bits (Relay Word bits LB1 through LB8)
are retained, much like in the preceding Power Loss explanation.
If settings are changed for a setting group other than the active setting group, there is no
interruption of the local bits (the relay is not momentarily disabled).
If a local control switch is made inoperable because of a settings change (i.e., the corresponding
label settings are nulled), the corresponding local bit is then fixed at logical 0, regardless of the
local bit state before the settings change. If a local control switch is made newly operable
because of a settings change (i.e., the corresponding label settings are set), the corresponding
local bit starts out at logical 0.
R EMOTE C ONTROL S WITCHES
Remote control switches are operated via the serial communications port only (see CON
Command (Control Remote Bit) in Section 10: Serial Port Communications and Commands).
Figure SECTION 7: .9: Remote Control Switches Drive Remote Bits RB1 Through
RB8