SKF Multilog On-Line System IMx-M User Manual page 158

Protection
Protection Module Configuration with IMx-M Manager
Table 2-31: Relay voting 2 out of 2.
Relay Voting "Two out of Two" Candidates
Ch 1 Condition
Normal
Normal
Normal
Not OK
Not OK
Not OK
Alert or Danger
Alert or Danger
Alert or Danger
Now let's look at the state 2oo3 (Two out of Three). Again, assuming that the relay type
is set to "Alert or Not OK", then each channel will submit an alarm candidate if its
condition is either "Not OK", or is in "Alert or Danger".
Table 2-32: Relay voting 2 out of 3.
Relay Voting "Two out of Three" Candidates
Ch 1 Condition
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Not OK
Not OK
2 - 138
Ch 2 Condition
Normal
Not OK
Alert or Danger
Normal
Not OK
Alert or Danger
Normal
Not OK
Alert or Danger
Ch 2 Condition
Normal
Normal
Normal
Not OK
Not OK
Not OK
Alert or Danger
Alert or Danger
Alert or Danger
Normal
Normal
Relay State
Not Triggered
Not Triggered
Not Triggered
Not Triggered
Triggered
Triggered
Not Triggered
Triggered
Triggered
Ch 3 Condition
Normal
Not OK
Alert or Danger
Normal
Not OK
Alert or Danger
Normal
Not OK
Alert or Danger
Normal
Not OK
SKF Multilog On-Line System IMx-M
Relay State
Not Triggered
Not Triggered
Not Triggered
Not Triggered
Triggered
Triggered
Not Triggered
Triggered
Triggered
Not Triggered
Triggered
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