Schweitzer Engineering Laboratories SEL-321 - Figure 1.7: SEL OGIC Control Equations Programmable Control Logic; Figure 1.8: SEL-5601 Analytic Assistant

Date Code 20011026 Introduction 1-5
SEL-321/321-1 Instruction Manual
Figure 1.7: SELOGIC
®
Control Equations Programmable
Control Logic
• Assign input functions
• Create output functions
specific to any applica-
tion
• Design unique trip and
control schemes
• Minimize external timers,
auxiliary relays, wiring,
and panel space
• Event reporting records
all logic
67Q4
67Q2
67Q1
27L
ZLOAD
0
2500
0
250
-5000
0
5000
0 4 8 12
IA IB ICVA VB VC3I0 3I1 3I2Digitals
Cycles
IA IB IC VA VB
VC 3I0 3I1 3I2
Figure 1.8: SEL-5601 Analytic Assistant
• Oscillographic displays
using the SEL-5601
Analytic Assistant and 16
samples/cycle data
• Condensed 4 samples/
cycle reporting
• Full report gives com-
plete state of inputs,
outputs, and elements
every 1/16-cycle
• Read the ASCII text
format with any computer
– no proprietary formats
are used
Event Reporting
Provides four types of event reports:
• Automatic summary report with abbreviated information
• Default report is 11-cycles duration, 4 samples/cycle
• Long event report is 11-cycles duration, 16 samples/cycle
• Unfiltered report for computer analysis of data
• Forty summaries are stored in nonvolatile memory