Sel SEL-421 - Protection; Control Equation Programming Areas

R.3.7
Date Code 20111215 Reference Manual SEL-421 Relay
SELOGIC Control Equation Programming
SELOGIC Control Equation Setting Structure
NOTE: The SEL-421-1 and the
SEL-421-2 have only one 100-line
automation programming block.
Figure 3.2 SELOGIC Control Equation Programming Areas
Protection
Protection SELOGIC control equation programming includes a fixed area and a
free-form area. You can configure many protection settings within the relay
(for example TR) with fixed SEL
OGIC control equation programming. Use
these settings to control protection operation and customize relay operation.
The programming and operation of fixed SEL
OGIC control equations in this
area is very similar to programming in SEL-300 series relays.
There is a free-form SEL
OGIC control equation programming area associated
with protection. Because this area operates at the protection processing
interval along with protection algorithms and outputs, use this area to extend
and customize protection operation. Protection free-form SEL
OGIC control
equation programming includes a complete set of timers, counters, and
variables.
For all protection settings, including protection SEL
OGIC control equation
programming, there are six groups of settings that you activate with the
protection settings group selection. Only one group is active at a time. When
you switch groups, for example, you can activate completely different
programming that corresponds to the conditions indicated by the active group.
See Multiple Setting Groups on page R.3.8 for more information.
If you want the programming to operate identically in all groups, develop the
settings in one group and copy these to all groups. You can copy settings using
the COPY command documented in Section 9: ASCII Command Reference.
You can also perform cut-and-paste operations in the
ACSELERATOR
QuickSet
®
SEL-5030 software.
Automation SELOGIC
Control Equation Programming
Block 10
Block 9
Block 8
Block 7
Block 6
Block 5
Block 4
Block 3
Block 2
Free-Form SEL
OGIC
Control Equation
Programming
Block 1
Fixed SEL
OGIC
Control Equation
Settings
Free-Form SEL OGIC
Control Equation
Programming
Fixed SEL OGIC
Control Equation
Settings
Output Settings
Protection Settings Group 6
Protection Settings Group 5
Protection Settings Group 4
Protection Settings Group 3
Protection Settings Group 2
Protection Settings Group 1