9.9
Date Code 20170927 Instruction Manual SEL-751 Relay
Bay Control
Overview
Pushbutton Settings
The pushbutton settings FPPBnn (nn = 01–08) allow you to quickly navigate
to a specific screen by pressing the programmed pushbutton. Refer to
Table 8.17 for the list of screens available for the FPPBnn settings. Note that a
given pushbutton can be configured to navigate to a specific screen but can
also be used in SEL
OGIC (e.g., PB08 Relay Word bit). The relay does not
prevent you from configuring a pushbutton for two purposes. Make sure to set
dual-purpose pushbuttons with care to ensure safe operation.
Bay Control Breaker Settings
Bay control breaker settings are only available if the designed single-line
diagram has a breaker symbol. When QuickSet detects a breaker symbol as
part of the single-line diagram, it populates the corresponding settings. The
SEL-751 supports one three-pole breaker. The setting BK01TTY is forced to 3
by default and is not settable. The breaker on the single-line can be configured
as monitor-only or as a controllable breaker. Set BK01MOD = MONITOR if
you do not want to allow breaker control via the touchscreen. Set
BK01MOD = CONTROL if you want to allow breaker control via the
touchscreen. Set BK01CS and BK01OS settings to the corresponding Relay
Word bits that indicate the close and open status of the breaker. The relay does
not support breaker alarm logic, but it can be programmed using SEL
OGIC. To
display breaker alarm status, set the breaker alarm status setting BK01AS to
the corresponding SEL
OGIC bit. When BK01MOD := CONTROL, both
BK01CLC and BK01OPC settings are forced to CC and OC, respectively, and
are not settable. Refer to Bay Control Application Example on page 9.13 for
sample breaker settings.
Bay Control Disconnect Switch Settings
The bay control disconnect switch settings are only available if the designed
single-line diagram has at least one disconnect symbol. When QuickSet
detects one or more disconnect symbols as part of the single-line diagram, it
populates the corresponding settings. The SEL-751 supports five monitor-
only, two-position disconnects. The setting 2DnnMOD (nn = 01–05) is forced
to MONITOR by default and is not settable. Set 2DSnnCS and 2DSnnOS
settings to the corresponding Relay Word bits that indicate the close and open
status of the disconnect. Map the output of the disconnect alarm logic,
89AL2Pn (see Figure 9.1), to the corresponding 2DSnnAS setting. Refer to
Bay Control Application Example on page 9.13 for sample disconnect switch
settings.
Bay Control Analog Label Settings
The analog label settings are only available if the designed bay screen has at
least one analog label. When QuickSet detects one or more analog labels as
part of the bay screen, it populates the corresponding settings. The SEL-751
supports as many as 32 analog labels. Set ALABqq (qq = 01–32) to display
the desired analog quantity on the bay screen. Refer to the display points
column of Table L.1 for the list of analog quantities available to program into
analog labels.
Bay Control Digital Label Settings
The digital label settings are only available if the designed bay screen has at
least one digital label. When QuickSet detects one or more digital labels as
part of the bay screen, it populates the corresponding settings. The SEL-751
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