Communication Channel Test Logic (Ccht) - ABB REL 551 2.3 Series Installation And Comissioning Manual



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Communication channel test logic
(CCHT)
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Prepare the terminal for verification of settings as outlined in section "Preparing for
test" in this chapter.
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A pulse should appear "tCS".
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The CCHT--ALARM should appear.
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The CCHT--CHOK should appear.
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